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Repository: zfl9/dns2tcp
Branch: master
Commit: 0260861a91a5
Files: 11
Total size: 258.4 KB
Directory structure:
gitextract_7c04hrd5/
├── .gitignore
├── LICENSE
├── Makefile
├── README.md
├── dns2tcp.c
└── libev/
├── config.h
├── ev.c
├── ev.h
├── ev_epoll.c
├── ev_vars.h
└── ev_wrap.h
================================================
FILE CONTENTS
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FILE: .gitignore
================================================
*.o
*.gch
dns2tcp
.vscode/
================================================
FILE: LICENSE
================================================
GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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================================================
FILE: Makefile
================================================
CC = gcc
CFLAGS = -std=c99 -Wall -Wextra -Wvla -O3 -flto -fno-strict-aliasing -ffunction-sections -fdata-sections -DNDEBUG
LDFLAGS = -O3 -flto -fno-strict-aliasing -Wl,--gc-sections -s
LIBS = -lm
SRCS = dns2tcp.c libev/ev.c
OBJS = $(SRCS:.c=.o)
MAIN = dns2tcp
DESTDIR = /usr/local/bin
.PHONY: all install clean
all: $(MAIN)
install: $(MAIN)
mkdir -p $(DESTDIR)
install -m 0755 $(MAIN) $(DESTDIR)
clean:
$(RM) $(MAIN) *.o libev/*.o
$(MAIN): $(OBJS)
$(CC) $(LDFLAGS) -o $(MAIN) $(OBJS) $(LIBS)
.c.o:
$(CC) $(CFLAGS) -c $< -o $@
================================================
FILE: README.md
================================================
# dns2tcp
一个 DNS 实用工具，用于将 DNS 查询从 UDP 转为 TCP。
当然有很多 DNS 工具都可以实现这个功能，比如 pdnsd、dnsforwarder；但如果你只是想使用其 UDP 转 TCP 功能（比如配合 dnsmasq，将 dnsmasq 向上游发出的 DNS 查询从 UDP 转为 TCP），那么 dns2tcp 可能是更好的选择。
`dns2tcp` 设计的非常简洁以及易用，它不需要任何配置文件，在命令行参数中指定一个 **本地 UDP 监听地址** 以及一个 **远程 DNS 服务器地址**（该 DNS 服务器支持 TCP 查询）即可，没有任何多余功能。
## 如何编译
> 为了方便使用，[releases](https://github.com/zfl9/dns2tcp/releases) 页面发布了 linux 下常见架构的 musl 静态链接二进制。
```bash
git clone https://github.com/zfl9/dns2tcp
cd dns2tcp
make && sudo make install
```
dns2tcp 默认安装到 `/usr/local/bin/dns2tcp`，可安装到其它目录，如 `make install DESTDIR=/opt/local/bin`。
交叉编译时只需指定 CC 变量，如 `make CC=aarch64-linux-gnu-gcc`（若报错，请先执行 `make clean`，然后再试）。
## 如何运行
```bash
# sh/bash 可以不加引号，zsh 必须加引号，防止#被转义
# UPDATE: 从 v1.1.1 版本开始可以省略端口号，默认是 53
dns2tcp -L "127.0.0.1#5353" -R "8.8.8.8#53"
# 如果想在后台运行，可以这样做：
(dns2tcp -L "127.0.0.1#5353" -R "8.8.8.8#53" </dev/null &>>/var/log/dns2tcp.log &)
```
- `-L` 选项指定本地监听地址，该监听地址接受 UDP 协议的 DNS 查询。
- `-R` 选项指定远程 DNS 服务器地址，该 DNS 服务器应支持 TCP 查询。
## 小技巧
借助 iptables，将本机发往 8.8.8.8:53 的 UDP 查询请求，强行重定向至本机 dns2tcp 监听端口，这样就可以不用修改原有 dns 组件的配置，无感转换为 TCP 查询。还是上面那个例子，在启动 dns2tcp 之后，再执行如下 iptables 命令：
```bash
# 将目标地址为 8.8.8.8:53/udp 的包重定向至 dns2tcp 监听端口，实现透明 udp2tcp 转换
iptables -t nat -A OUTPUT -p udp -d 8.8.8.8 --dport 53 -j REDIRECT --to-ports 5353
```
你可以在本机使用 `dig @8.8.8.8 baidu.com` 测试，观察 dns2tcp 日志（带上 -v），就会发现走 TCP 出去了。
## 全部参数
```console
usage: dns2tcp <-L listen> <-R remote> [options...]
-L <ip[#port]> udp listen address, port default to 53
-R <ip[#port]> tcp remote address, port default to 53
-l <ip[#port]> tcp local address, port default to 0
-s <syncnt> set TCP_SYNCNT option for tcp socket
-6 set IPV6_V6ONLY option for udp socket
-r set SO_REUSEPORT option for udp socket
-v print verbose log, used for debugging
-V print version number of dns2tcp and exit
-h print help information of dns2tcp and exit
bug report: https://github.com/zfl9/dns2tcp. email: zfl9.com@gmail.com
```
`-l`：设置`TCP`连接的本地地址（源地址），`0地址`或`0端口`表示由系统选择。
`-s`：对`TCP`套接字设置`TCP_SYNCNT`，该选项值将影响`TCP`的连接超时时间。
`-6`：对`UDP`套接字设置`IPV6_V6ONLY`，建议始终启用，把 v4 和 v6 监听严格区分开。
`-r`：对`UDP`套接字设置`SO_REUSEPORT`，用于多进程负载均衡，Linux 3.9+ 开始可用。
================================================
FILE: dns2tcp.c
================================================
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include "libev/ev.h"
#define DNS2TCP_VER "dns2tcp v1.1.2"
#ifndef IPV6_V6ONLY
#define IPV6_V6ONLY 26
#endif
#ifndef SO_REUSEPORT
#define SO_REUSEPORT 15
#endif
#ifndef TCP_SYNCNT
#define TCP_SYNCNT 7
#endif
#define IP4STRLEN INET_ADDRSTRLEN /* include \0 */
#define IP6STRLEN INET6_ADDRSTRLEN /* include \0 */
#define PORTSTRLEN 6 /* "65535" (include \0) */
#define DNS_MSGSZ 1472 /* mtu:1500 - iphdr:20 - udphdr:8 */
/* ======================== helper ======================== */
#define __unused __attribute__((unused))
#define alignto(alignment) __attribute__((aligned(alignment)))
// get the struct pointer by the field(member) pointer
#define container_of(p_field, struct_type, field_name) ( \
(struct_type *) ((void *)(p_field) - offsetof(struct_type, field_name)) \
)
/* ======================== log-func ======================== */
#define log_write(color, level, fmt, args...) ({ \
time_t t_ = time(NULL); \
const struct tm *tm_ = localtime(&t_); \
printf("\e[" color ";1m%d-%02d-%02d %02d:%02d:%02d " level "\e[0m " \
"\e[1m[%s]\e[0m " fmt "\n", \
tm_->tm_year + 1900, tm_->tm_mon + 1, tm_->tm_mday, \
tm_->tm_hour, tm_->tm_min, tm_->tm_sec, \
__func__, ##args); \
})
#define log_verbose(fmt, args...) ({ \
if (verbose) log_info(fmt, ##args); \
})
#define log_info(fmt, args...) \
log_write("32", "I", fmt, ##args)
#define log_warning(fmt, args...) \
log_write("33", "W", fmt, ##args)
#define log_error(fmt, args...) \
log_write("35", "E", fmt, ##args)
/* ======================== socket-addr ======================== */
union skaddr {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
};
#define skaddr_family(addr) ((addr)->sa.sa_family)
#define skaddr_is_sin(addr) (skaddr_family(addr) == AF_INET)
#define skaddr_is_sin6(addr) (skaddr_family(addr) == AF_INET6)
#define skaddr_len(addr) (skaddr_is_sin(addr) ? sizeof((addr)->sin) : sizeof((addr)->sin6))
static void skaddr_from_text(union skaddr *addr, int family, const char *ipstr, uint16_t port) {
if (family == AF_INET) {
addr->sin.sin_family = AF_INET;
inet_pton(AF_INET, ipstr, &addr->sin.sin_addr);
addr->sin.sin_port = htons(port);
} else {
addr->sin6.sin6_family = AF_INET6;
inet_pton(AF_INET6, ipstr, &addr->sin6.sin6_addr);
addr->sin6.sin6_port = htons(port);
}
}
static void skaddr_to_text(const union skaddr *addr, char *ipstr, uint16_t *port) {
if (skaddr_is_sin(addr)) {
inet_ntop(AF_INET, &addr->sin.sin_addr, ipstr, IP4STRLEN);
*port = ntohs(addr->sin.sin_port);
} else {
inet_ntop(AF_INET6, &addr->sin6.sin6_addr, ipstr, IP6STRLEN);
*port = ntohs(addr->sin6.sin6_port);
}
}
/* AF_INET, AF_INET6, -1(invalid) */
static int get_ipstr_family(const char *ipstr) {
char tmp[16];
if (!ipstr)
return -1;
if (inet_pton(AF_INET, ipstr, &tmp) == 1)
return AF_INET;
if (inet_pton(AF_INET6, ipstr, &tmp) == 1)
return AF_INET6;
return -1;
}
/* ======================== context ======================== */
typedef struct {
evio_t watcher; /* tcp watcher */
char buffer[2 + DNS_MSGSZ] alignto(__alignof__(uint16_t)); /* msglen(be16) + msg */
uint16_t nbytes; /* nrecv or nsend */
union skaddr srcaddr;
} ctx_t;
/* ======================== global-vars ======================== */
enum {
FLAG_IPV6_V6ONLY = 1 << 0, /* udp listen */
FLAG_REUSE_PORT = 1 << 1, /* udp listen */
FLAG_VERBOSE = 1 << 2, /* logging */
FLAG_LOCAL_ADDR = 1 << 3, /* tcp local addr */
};
#define has_flag(flag) (g_flags & (flag))
#define add_flag(flag) (g_flags |= (flag))
#define verbose has_flag(FLAG_VERBOSE)
static uint8_t g_flags = 0;
static uint8_t g_syn_cnt = 0;
/* udp listen */
static int g_listen_fd = -1;
static char g_listen_ipstr[IP6STRLEN] = {0};
static uint16_t g_listen_port = 0;
static union skaddr g_listen_skaddr = {0};
/* tcp server address */
static char g_remote_ipstr[IP6STRLEN] = {0};
static uint16_t g_remote_port = 0;
static union skaddr g_remote_skaddr = {0};
/* tcp local address [optional] */
static char g_local_ipstr[IP6STRLEN] = {0};
static uint16_t g_local_port = 0;
static union skaddr g_local_skaddr = {0};
static void udp_recvmsg_cb(evloop_t *evloop, evio_t *watcher, int events);
static void tcp_connect_cb(evloop_t *evloop, evio_t *watcher, int events);
static void tcp_sendmsg_cb(evloop_t *evloop, evio_t *watcher, int events);
static void tcp_recvmsg_cb(evloop_t *evloop, evio_t *watcher, int events);
static void print_help(void) {
printf("usage: dns2tcp <-L listen> <-R remote> [options...]\n"
" -L <ip[#port]> udp listen address, port default to 53\n"
" -R <ip[#port]> tcp remote address, port default to 53\n"
" -l <ip[#port]> tcp local address, port default to 0\n"
" -s <syncnt> set TCP_SYNCNT option for tcp socket\n"
" -6 set IPV6_V6ONLY option for udp socket\n"
" -r set SO_REUSEPORT option for udp socket\n"
" -v print verbose log, used for debugging\n"
" -V print version number of dns2tcp and exit\n"
" -h print help information of dns2tcp and exit\n"
"bug report: https://github.com/zfl9/dns2tcp. email: zfl9.com@gmail.com\n"
);
}
enum addr_type {
ADDR_UDP_LISTEN,
ADDR_TCP_REMOTE,
ADDR_TCP_LOCAL,
};
static void parse_addr(const char *addr, enum addr_type addr_type) {
const char *end = addr + strlen(addr);
const char *sep = strchr(addr, '#') ?: end;
const char *ipstart = addr;
int iplen = sep - ipstart;
const char *portstart = sep + 1;
int portlen = (sep < end) ? end - portstart : -1;
char ipstr[IP6STRLEN];
if (iplen >= IP6STRLEN) goto err;
memcpy(ipstr, ipstart, iplen);
ipstr[iplen] = 0;
int family = get_ipstr_family(ipstr);
if (family == -1) goto err;
uint16_t port = addr_type != ADDR_TCP_LOCAL ? 53 : 0;
if (portlen >= 0 && (port = strtoul(portstart, NULL, 10)) == 0 && addr_type != ADDR_TCP_LOCAL) goto err;
#define set_addr(tag) ({ \
strcpy(g_##tag##_ipstr, ipstr); \
g_##tag##_port = port; \
skaddr_from_text(&g_##tag##_skaddr, family, ipstr, port); \
})
switch (addr_type) {
case ADDR_UDP_LISTEN:
set_addr(listen);
break;
case ADDR_TCP_REMOTE:
set_addr(remote);
break;
case ADDR_TCP_LOCAL:
set_addr(local);
break;
}
#undef set_addr
return;
err:;
const char *type;
switch (addr_type) {
case ADDR_UDP_LISTEN:
type = "udp_listen";
break;
case ADDR_TCP_REMOTE:
type = "tcp_remote";
break;
case ADDR_TCP_LOCAL:
type = "tcp_local";
break;
}
printf("invalid %s address: '%s'\n", type, addr);
print_help();
exit(1);
}
static void parse_opt(int argc, char *argv[]) {
char opt_listen_addr[IP6STRLEN + PORTSTRLEN] = {0};
char opt_remote_addr[IP6STRLEN + PORTSTRLEN] = {0};
char opt_local_addr[IP6STRLEN + PORTSTRLEN] = {0};
opterr = 0;
int shortopt;
const char *optstr = "L:R:l:s:6rafvVh";
while ((shortopt = getopt(argc, argv, optstr)) != -1) {
switch (shortopt) {
case 'L':
if (strlen(optarg) + 1 > IP6STRLEN + PORTSTRLEN) {
printf("invalid udp listen addr: %s\n", optarg);
goto err;
}
strcpy(opt_listen_addr, optarg);
break;
case 'R':
if (strlen(optarg) + 1 > IP6STRLEN + PORTSTRLEN) {
printf("invalid tcp remote addr: %s\n", optarg);
goto err;
}
strcpy(opt_remote_addr, optarg);
break;
case 'l':
if (strlen(optarg) + 1 > IP6STRLEN + PORTSTRLEN) {
printf("invalid tcp local addr: %s\n", optarg);
goto err;
}
strcpy(opt_local_addr, optarg);
add_flag(FLAG_LOCAL_ADDR);
break;
case 's':
g_syn_cnt = strtoul(optarg, NULL, 10);
if (g_syn_cnt == 0) {
printf("invalid tcp syn cnt: %s\n", optarg);
goto err;
}
break;
case '6':
add_flag(FLAG_IPV6_V6ONLY);
break;
case 'r':
add_flag(FLAG_REUSE_PORT);
break;
case 'a':
/* nop */
break;
case 'f':
/* nop */
break;
case 'v':
add_flag(FLAG_VERBOSE);
break;
case 'V':
printf(DNS2TCP_VER"\n");
exit(0);
case 'h':
print_help();
exit(0);
case '?':
if (!strchr(optstr, optopt)) {
printf("unknown option '-%c'\n", optopt);
} else {
printf("missing optval '-%c'\n", optopt);
}
goto err;
}
}
/* check the required opt */
if (strlen(opt_listen_addr) == 0) {
printf("missing option: '-L'\n");
goto err;
}
if (strlen(opt_remote_addr) == 0) {
printf("missing option: '-R'\n");
goto err;
}
parse_addr(opt_listen_addr, ADDR_UDP_LISTEN);
parse_addr(opt_remote_addr, ADDR_TCP_REMOTE);
if (has_flag(FLAG_LOCAL_ADDR))
parse_addr(opt_local_addr, ADDR_TCP_LOCAL);
return;
err:
print_help();
exit(1);
}
/* udp listen or tcp connect */
static int create_socket(int family, int type) {
const char *err_op = NULL;
int fd = socket(family, type | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
if (fd < 0) {
err_op = "create_socket";
goto out;
}
const int opt = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
err_op = "set_reuseaddr";
goto out;
}
if (type == SOCK_DGRAM) {
// udp listen socket
if (has_flag(FLAG_REUSE_PORT) && setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
err_op = "set_reuseport";
goto out;
}
if (family == AF_INET6 && has_flag(FLAG_IPV6_V6ONLY) && setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &opt, sizeof(opt)) < 0) {
err_op = "set_ipv6only";
goto out;
}
} else {
// tcp connect socket
if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt)) < 0) {
err_op = "set_tcp_nodelay";
goto out;
}
const int syn_cnt = g_syn_cnt;
if (syn_cnt && setsockopt(fd, IPPROTO_TCP, TCP_SYNCNT, &syn_cnt, sizeof(syn_cnt)) < 0) {
err_op = "set_tcp_syncnt";
goto out;
}
}
out:
if (err_op)
log_error("%s(fd:%d, family:%d, type:%d) failed: %m", err_op, fd, family, type);
return fd;
}
int main(int argc, char *argv[]) {
signal(SIGPIPE, SIG_IGN);
setvbuf(stdout, NULL, _IOLBF, 256);
parse_opt(argc, argv);
log_info("udp listen addr: %s#%hu", g_listen_ipstr, g_listen_port);
log_info("tcp remote addr: %s#%hu", g_remote_ipstr, g_remote_port);
if (has_flag(FLAG_LOCAL_ADDR)) log_info("tcp local addr: %s#%hu", g_local_ipstr, g_local_port);
if (g_syn_cnt) log_info("enable TCP_SYNCNT:%hhu sockopt", g_syn_cnt);
if (has_flag(FLAG_IPV6_V6ONLY)) log_info("enable IPV6_V6ONLY sockopt");
if (has_flag(FLAG_REUSE_PORT)) log_info("enable SO_REUSEPORT sockopt");
log_verbose("print the verbose log");
g_listen_fd = create_socket(skaddr_family(&g_listen_skaddr), SOCK_DGRAM);
if (g_listen_fd < 0)
return 1;
if (bind(g_listen_fd, &g_listen_skaddr.sa, skaddr_len(&g_listen_skaddr)) < 0) {
log_error("bind udp address: %m");
return 1;
}
evloop_t *evloop = ev_default_loop(0);
evio_t watcher;
ev_io_init(&watcher, udp_recvmsg_cb, g_listen_fd, EV_READ);
ev_io_start(evloop, &watcher);
return ev_run(evloop, 0);
}
static void udp_recvmsg_cb(evloop_t *evloop, evio_t *watcher __unused, int events __unused) {
ctx_t *ctx = malloc(sizeof(*ctx));
ssize_t nrecv = recvfrom(g_listen_fd, (void *)ctx->buffer + 2, DNS_MSGSZ, 0, &ctx->srcaddr.sa, &(socklen_t){sizeof(ctx->srcaddr)});
if (nrecv < 0) {
if (errno != EAGAIN && errno != EWOULDBLOCK)
log_warning("recv from udp socket: %m");
goto free_ctx;
}
if (verbose) {
char ip[IP6STRLEN];
uint16_t port;
skaddr_to_text(&ctx->srcaddr, ip, &port);
log_info("recv from %s#%hu, nrecv:%zd", ip, port, nrecv);
}
uint16_t *p_msglen = (void *)ctx->buffer;
*p_msglen = htons(nrecv); /* msg length */
int fd = create_socket(skaddr_family(&g_remote_skaddr), SOCK_STREAM);
if (fd < 0)
goto free_ctx;
if (has_flag(FLAG_LOCAL_ADDR) && bind(fd, &g_local_skaddr.sa, skaddr_len(&g_local_skaddr)) < 0) {
log_warning("bind tcp address: %m");
goto close_fd;
}
if (connect(fd, &g_remote_skaddr.sa, skaddr_len(&g_remote_skaddr)) < 0 && errno != EINPROGRESS) {
log_warning("connect to %s#%hu: %m", g_remote_ipstr, g_remote_port);
goto close_fd;
}
log_verbose("try to connect to %s#%hu", g_remote_ipstr, g_remote_port);
ev_io_init(&ctx->watcher, tcp_connect_cb, fd, EV_WRITE);
ev_io_start(evloop, &ctx->watcher);
return;
close_fd:
close(fd);
free_ctx:
free(ctx);
}
static void free_ctx(ctx_t *ctx, evloop_t *evloop) {
ev_io_stop(evloop, &ctx->watcher);
close(ctx->watcher.fd);
free(ctx);
}
static void tcp_connect_cb(evloop_t *evloop, evio_t *watcher, int events __unused) {
ctx_t *ctx = container_of(watcher, ctx_t, watcher);
if (getsockopt(watcher->fd, SOL_SOCKET, SO_ERROR, &errno, &(socklen_t){sizeof(errno)}) < 0 || errno) {
log_warning("connect to %s#%hu: %m", g_remote_ipstr, g_remote_port);
free_ctx(ctx, evloop);
return;
}
log_verbose("connect to %s#%hu succeed", g_remote_ipstr, g_remote_port);
ctx->nbytes = 0;
ev_set_cb(watcher, tcp_sendmsg_cb);
ev_invoke(evloop, watcher, EV_WRITE);
}
static void tcp_sendmsg_cb(evloop_t *evloop, evio_t *watcher, int events __unused) {
ctx_t *ctx = container_of(watcher, ctx_t, watcher);
uint16_t *p_msglen = (void *)ctx->buffer;
uint16_t datalen = 2 + ntohs(*p_msglen);
ssize_t nsend = send(watcher->fd, (void *)ctx->buffer + ctx->nbytes, datalen - ctx->nbytes, 0);
if (nsend < 0) {
if (errno == EAGAIN || errno == EWOULDBLOCK) return;
log_warning("send to %s#%hu: %m", g_remote_ipstr, g_remote_port);
free_ctx(ctx, evloop);
return;
}
log_verbose("send to %s#%hu, nsend:%zd", g_remote_ipstr, g_remote_port, nsend);
ctx->nbytes += nsend;
if (ctx->nbytes >= datalen) {
ctx->nbytes = 0;
ev_io_stop(evloop, watcher);
ev_io_init(watcher, tcp_recvmsg_cb, watcher->fd, EV_READ);
ev_io_start(evloop, watcher);
}
}
static void tcp_recvmsg_cb(evloop_t *evloop, evio_t *watcher, int events __unused) {
ctx_t *ctx = container_of(watcher, ctx_t, watcher);
void *buffer = ctx->buffer;
ssize_t nrecv = recv(watcher->fd, buffer + ctx->nbytes, 2 + DNS_MSGSZ - ctx->nbytes, 0);
if (nrecv < 0) {
if (errno == EAGAIN || errno == EWOULDBLOCK) return;
log_warning("recv from %s#%hu: %m", g_remote_ipstr, g_remote_port);
goto free_ctx;
}
if (nrecv == 0) {
log_warning("recv from %s#%hu: connection is closed", g_remote_ipstr, g_remote_port);
goto free_ctx;
}
log_verbose("recv from %s#%hu, nrecv:%zd", g_remote_ipstr, g_remote_port, nrecv);
ctx->nbytes += nrecv;
uint16_t msglen;
if (ctx->nbytes < 2 || ctx->nbytes < 2 + (msglen = ntohs(*(uint16_t *)buffer))) return;
ssize_t nsend = sendto(g_listen_fd, buffer + 2, msglen, 0, &ctx->srcaddr.sa, skaddr_len(&ctx->srcaddr));
if (nsend < 0 || verbose) {
char ip[IP6STRLEN];
uint16_t port;
skaddr_to_text(&ctx->srcaddr, ip, &port);
if (nsend < 0)
log_warning("send to %s#%hu: %m", ip, port);
else
log_info("send to %s#%hu, nsend:%zd", ip, port, nsend);
}
free_ctx:
free_ctx(ctx, evloop);
}
================================================
FILE: libev/config.h
================================================
#pragma once
#pragma GCC diagnostic ignored "-Wcomment"
#pragma GCC diagnostic ignored "-Wunused-function"
#pragma GCC diagnostic ignored "-Wunused-parameter"
#pragma GCC diagnostic ignored "-Wunused-variable"
#pragma GCC diagnostic ignored "-Wunused-value"
#ifdef __clang__
#pragma GCC diagnostic ignored "-Wextern-initializer"
#endif
/* libev-4.33 */
#define EV_STANDALONE 1 /* manual configuration */
#define EV_COMPAT3 0 /* remove compatible code */
#define EV_VERIFY 0 /* remove verification code */
#define EV_USE_FLOOR 1 /* use libm.floor() function */
// #define EV_NO_SMP 1 /* disable multi-threads support */
// #define EV_NO_THREADS 1 /* disable multi-threads support */
#define EV_PERIODIC_ENABLE 0 /* disable ev_periodic watcher */
#define EV_SIGNAL_ENABLE 0 /* disable ev_signal watcher */
#define EV_CHILD_ENABLE 0 /* disable ev_child watcher */
#define EV_STAT_ENABLE 0 /* disable ev_stat watcher */
#define EV_IDLE_ENABLE 0 /* disable ev_idle watcher */
#define EV_PREPARE_ENABLE 0 /* disable ev_prepare watcher */
#define EV_CHECK_ENABLE 0 /* disable ev_check watcher */
#define EV_EMBED_ENABLE 0 /* disable ev_embed watcher */
#define EV_FORK_ENABLE 0 /* disable ev_fork watcher */
#define EV_CLEANUP_ENABLE 0 /* disable ev_cleanup watcher */
#define EV_ASYNC_ENABLE 0 /* disbale ev_async watcher */
#define EV_USE_SELECT 0
#define EV_USE_POLL 0
#define EV_USE_EPOLL 1
#define EV_USE_LINUXAIO 0
#define EV_USE_IOURING 0
#define EV_USE_KQUEUE 0
#define EV_USE_PORT 0
#define EV_USE_INOTIFY 0
#define EV_USE_MONOTONIC 0
#define EV_USE_REALTIME 0
#define EV_USE_CLOCK_SYSCALL 0
#define EV_USE_TIMERFD 0
#define EV_USE_EVENTFD 0
#define EV_USE_SIGNALFD 0
#define EV_MINPRI 0
#define EV_MAXPRI 0
/* typedef struct */
typedef struct ev_loop evloop_t;
typedef struct ev_io evio_t;
typedef struct ev_timer evtimer_t;
/* typedef callback */
typedef void (*evio_cb_t)(evloop_t *evloop, evio_t *watcher, int revents);
typedef void (*evtimer_cb_t)(evloop_t *evloop, evtimer_t *watcher, int revents);
================================================
FILE: libev/ev.c
================================================
/*
* libev event processing core, watcher management
*
* Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*/
#include "config.h"
/* this big block deduces configuration from config.h */
#ifndef EV_STANDALONE
# ifdef EV_CONFIG_H
# include EV_CONFIG_H
# else
# include "config.h"
# endif
# if HAVE_FLOOR
# ifndef EV_USE_FLOOR
# define EV_USE_FLOOR 1
# endif
# endif
# if HAVE_CLOCK_SYSCALL
# ifndef EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 1
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 1
# endif
# endif
# elif !defined EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 0
# endif
# if HAVE_CLOCK_GETTIME
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 1
# endif
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
# else
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
# endif
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
# endif
# if HAVE_NANOSLEEP
# ifndef EV_USE_NANOSLEEP
# define EV_USE_NANOSLEEP EV_FEATURE_OS
# endif
# else
# undef EV_USE_NANOSLEEP
# define EV_USE_NANOSLEEP 0
# endif
# if HAVE_SELECT && HAVE_SYS_SELECT_H
# ifndef EV_USE_SELECT
# define EV_USE_SELECT EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_SELECT
# define EV_USE_SELECT 0
# endif
# if HAVE_POLL && HAVE_POLL_H
# ifndef EV_USE_POLL
# define EV_USE_POLL EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_POLL
# define EV_USE_POLL 0
# endif
# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
# ifndef EV_USE_EPOLL
# define EV_USE_EPOLL EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_EPOLL
# define EV_USE_EPOLL 0
# endif
# if HAVE_LINUX_AIO_ABI_H
# ifndef EV_USE_LINUXAIO
# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
# endif
# else
# undef EV_USE_LINUXAIO
# define EV_USE_LINUXAIO 0
# endif
# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
# ifndef EV_USE_IOURING
# define EV_USE_IOURING EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_IOURING
# define EV_USE_IOURING 0
# endif
# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
# ifndef EV_USE_KQUEUE
# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_KQUEUE
# define EV_USE_KQUEUE 0
# endif
# if HAVE_PORT_H && HAVE_PORT_CREATE
# ifndef EV_USE_PORT
# define EV_USE_PORT EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_PORT
# define EV_USE_PORT 0
# endif
# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
# ifndef EV_USE_INOTIFY
# define EV_USE_INOTIFY EV_FEATURE_OS
# endif
# else
# undef EV_USE_INOTIFY
# define EV_USE_INOTIFY 0
# endif
# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
# ifndef EV_USE_SIGNALFD
# define EV_USE_SIGNALFD EV_FEATURE_OS
# endif
# else
# undef EV_USE_SIGNALFD
# define EV_USE_SIGNALFD 0
# endif
# if HAVE_EVENTFD
# ifndef EV_USE_EVENTFD
# define EV_USE_EVENTFD EV_FEATURE_OS
# endif
# else
# undef EV_USE_EVENTFD
# define EV_USE_EVENTFD 0
# endif
# if HAVE_SYS_TIMERFD_H
# ifndef EV_USE_TIMERFD
# define EV_USE_TIMERFD EV_FEATURE_OS
# endif
# else
# undef EV_USE_TIMERFD
# define EV_USE_TIMERFD 0
# endif
#endif
/* OS X, in its infinite idiocy, actually HARDCODES
* a limit of 1024 into their select. Where people have brains,
* OS X engineers apparently have a vacuum. Or maybe they were
* ordered to have a vacuum, or they do anything for money.
* This might help. Or not.
* Note that this must be defined early, as other include files
* will rely on this define as well.
*/
#define _DARWIN_UNLIMITED_SELECT 1
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <sys/types.h>
#include <time.h>
#include <limits.h>
#include <signal.h>
#ifdef EV_H
# include EV_H
#else
# include "ev.h"
#endif
#if EV_NO_THREADS
# undef EV_NO_SMP
# define EV_NO_SMP 1
# undef ECB_NO_THREADS
# define ECB_NO_THREADS 1
#endif
#if EV_NO_SMP
# undef EV_NO_SMP
# define ECB_NO_SMP 1
#endif
#ifndef _WIN32
# include <sys/time.h>
# include <sys/wait.h>
# include <unistd.h>
# include <syscall.h>
#else
# include <io.h>
# define WIN32_LEAN_AND_MEAN
# include <winsock2.h>
# include <windows.h>
# ifndef EV_SELECT_IS_WINSOCKET
# define EV_SELECT_IS_WINSOCKET 1
# endif
# undef EV_AVOID_STDIO
#endif
/* this block tries to deduce configuration from header-defined symbols and defaults */
/* try to deduce the maximum number of signals on this platform */
#if defined EV_NSIG
/* use what's provided */
#elif defined NSIG
# define EV_NSIG (NSIG)
#elif defined _NSIG
# define EV_NSIG (_NSIG)
#elif defined SIGMAX
# define EV_NSIG (SIGMAX+1)
#elif defined SIG_MAX
# define EV_NSIG (SIG_MAX+1)
#elif defined _SIG_MAX
# define EV_NSIG (_SIG_MAX+1)
#elif defined MAXSIG
# define EV_NSIG (MAXSIG+1)
#elif defined MAX_SIG
# define EV_NSIG (MAX_SIG+1)
#elif defined SIGARRAYSIZE
# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
#elif defined _sys_nsig
# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
#else
# define EV_NSIG (8 * sizeof (sigset_t) + 1)
#endif
#ifndef EV_USE_FLOOR
# define EV_USE_FLOOR 0
#endif
#ifndef EV_USE_CLOCK_SYSCALL
# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
# else
# define EV_USE_CLOCK_SYSCALL 0
# endif
#endif
#if !(_POSIX_TIMERS > 0)
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
# endif
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
#endif
#ifndef EV_USE_MONOTONIC
# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
# define EV_USE_MONOTONIC EV_FEATURE_OS
# else
# define EV_USE_MONOTONIC 0
# endif
#endif
#ifndef EV_USE_REALTIME
# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
#endif
#ifndef EV_USE_NANOSLEEP
# if _POSIX_C_SOURCE >= 199309L
# define EV_USE_NANOSLEEP EV_FEATURE_OS
# else
# define EV_USE_NANOSLEEP 0
# endif
#endif
#ifndef EV_USE_SELECT
# define EV_USE_SELECT EV_FEATURE_BACKENDS
#endif
#ifndef EV_USE_POLL
# ifdef _WIN32
# define EV_USE_POLL 0
# else
# define EV_USE_POLL EV_FEATURE_BACKENDS
# endif
#endif
#ifndef EV_USE_EPOLL
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
# define EV_USE_EPOLL EV_FEATURE_BACKENDS
# else
# define EV_USE_EPOLL 0
# endif
#endif
#ifndef EV_USE_KQUEUE
# define EV_USE_KQUEUE 0
#endif
#ifndef EV_USE_PORT
# define EV_USE_PORT 0
#endif
#ifndef EV_USE_LINUXAIO
# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
# else
# define EV_USE_LINUXAIO 0
# endif
#endif
#ifndef EV_USE_IOURING
# if __linux /* later checks might disable again */
# define EV_USE_IOURING 1
# else
# define EV_USE_IOURING 0
# endif
#endif
#ifndef EV_USE_INOTIFY
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
# define EV_USE_INOTIFY EV_FEATURE_OS
# else
# define EV_USE_INOTIFY 0
# endif
#endif
#ifndef EV_PID_HASHSIZE
# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
#endif
#ifndef EV_INOTIFY_HASHSIZE
# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
#endif
#ifndef EV_USE_EVENTFD
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
# define EV_USE_EVENTFD EV_FEATURE_OS
# else
# define EV_USE_EVENTFD 0
# endif
#endif
#ifndef EV_USE_SIGNALFD
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
# define EV_USE_SIGNALFD EV_FEATURE_OS
# else
# define EV_USE_SIGNALFD 0
# endif
#endif
#ifndef EV_USE_TIMERFD
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
# define EV_USE_TIMERFD EV_FEATURE_OS
# else
# define EV_USE_TIMERFD 0
# endif
#endif
#if 0 /* debugging */
# define EV_VERIFY 3
# define EV_USE_4HEAP 1
# define EV_HEAP_CACHE_AT 1
#endif
#ifndef EV_VERIFY
# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
#endif
#ifndef EV_USE_4HEAP
# define EV_USE_4HEAP EV_FEATURE_DATA
#endif
#ifndef EV_HEAP_CACHE_AT
# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
#endif
#ifdef __ANDROID__
/* supposedly, android doesn't typedef fd_mask */
# undef EV_USE_SELECT
# define EV_USE_SELECT 0
/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
# undef EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 0
#endif
/* aix's poll.h seems to cause lots of trouble */
#ifdef _AIX
/* AIX has a completely broken poll.h header */
# undef EV_USE_POLL
# define EV_USE_POLL 0
#endif
/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
/* which makes programs even slower. might work on other unices, too. */
#if EV_USE_CLOCK_SYSCALL
# include <sys/syscall.h>
# ifdef SYS_clock_gettime
# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
# undef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 1
# define EV_NEED_SYSCALL 1
# else
# undef EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 0
# endif
#endif
/* this block fixes any misconfiguration where we know we run into trouble otherwise */
#ifndef CLOCK_MONOTONIC
# undef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
#endif
#ifndef CLOCK_REALTIME
# undef EV_USE_REALTIME
# define EV_USE_REALTIME 0
#endif
#if !EV_STAT_ENABLE
# undef EV_USE_INOTIFY
# define EV_USE_INOTIFY 0
#endif
#if __linux && EV_USE_IOURING
# include <linux/version.h>
# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
# undef EV_USE_IOURING
# define EV_USE_IOURING 0
# endif
#endif
#if !EV_USE_NANOSLEEP
/* hp-ux has it in sys/time.h, which we unconditionally include above */
# if !defined _WIN32 && !defined __hpux
# include <sys/select.h>
# endif
#endif
#if EV_USE_LINUXAIO
# include <sys/syscall.h>
# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
# define EV_NEED_SYSCALL 1
# else
# undef EV_USE_LINUXAIO
# define EV_USE_LINUXAIO 0
# endif
#endif
#if EV_USE_IOURING
# include <sys/syscall.h>
# if !SYS_io_uring_setup && __linux && !__alpha
# define SYS_io_uring_setup 425
# define SYS_io_uring_enter 426
# define SYS_io_uring_wregister 427
# endif
# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
# define EV_NEED_SYSCALL 1
# else
# undef EV_USE_IOURING
# define EV_USE_IOURING 0
# endif
#endif
#if EV_USE_INOTIFY
# include <sys/statfs.h>
# include <sys/inotify.h>
/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
# ifndef IN_DONT_FOLLOW
# undef EV_USE_INOTIFY
# define EV_USE_INOTIFY 0
# endif
#endif
#if EV_USE_EVENTFD
/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
# include <stdint.h>
# ifndef EFD_NONBLOCK
# define EFD_NONBLOCK O_NONBLOCK
# endif
# ifndef EFD_CLOEXEC
# ifdef O_CLOEXEC
# define EFD_CLOEXEC O_CLOEXEC
# else
# define EFD_CLOEXEC 02000000
# endif
# endif
EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
#endif
#if EV_USE_SIGNALFD
/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
# include <stdint.h>
# ifndef SFD_NONBLOCK
# define SFD_NONBLOCK O_NONBLOCK
# endif
# ifndef SFD_CLOEXEC
# ifdef O_CLOEXEC
# define SFD_CLOEXEC O_CLOEXEC
# else
# define SFD_CLOEXEC 02000000
# endif
# endif
EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
struct signalfd_siginfo
{
uint32_t ssi_signo;
char pad[128 - sizeof (uint32_t)];
};
#endif
/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
#if EV_USE_TIMERFD
# include <sys/timerfd.h>
/* timerfd is only used for periodics */
# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
# undef EV_USE_TIMERFD
# define EV_USE_TIMERFD 0
# endif
#endif
/*****************************************************************************/
#if EV_VERIFY >= 3
# define EV_FREQUENT_CHECK ev_verify (EV_A)
#else
# define EV_FREQUENT_CHECK do { } while (0)
#endif
/*
* This is used to work around floating point rounding problems.
* This value is good at least till the year 4000.
*/
#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
//#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
/* find a portable timestamp that is "always" in the future but fits into time_t.
* this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
* and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
#define EV_TSTAMP_HUGE \
(sizeof (time_t) >= 8 ? 10000000000000. \
: 0 < (time_t)4294967295 ? 4294967295. \
: 2147483647.) \
#ifndef EV_TS_CONST
# define EV_TS_CONST(nv) nv
# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
# define EV_TS_FROM_USEC(us) us * 1e-6
# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
#endif
/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
/* ECB.H BEGIN */
/*
* libecb - http://software.schmorp.de/pkg/libecb
*
* Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
* Copyright (©) 2011 Emanuele Giaquinta
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*/
#ifndef ECB_H
#define ECB_H
/* 16 bits major, 16 bits minor */
#define ECB_VERSION 0x00010008
#include <string.h> /* for memcpy */
#if defined (_WIN32) && !defined (__MINGW32__)
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed char int_fast8_t;
typedef unsigned char uint_fast8_t;
typedef signed short int16_t;
typedef unsigned short uint16_t;
typedef signed int int_fast16_t;
typedef unsigned int uint_fast16_t;
typedef signed int int32_t;
typedef unsigned int uint32_t;
typedef signed int int_fast32_t;
typedef unsigned int uint_fast32_t;
#if __GNUC__
typedef signed long long int64_t;
typedef unsigned long long uint64_t;
#else /* _MSC_VER || __BORLANDC__ */
typedef signed __int64 int64_t;
typedef unsigned __int64 uint64_t;
#endif
typedef int64_t int_fast64_t;
typedef uint64_t uint_fast64_t;
#ifdef _WIN64
#define ECB_PTRSIZE 8
typedef uint64_t uintptr_t;
typedef int64_t intptr_t;
#else
#define ECB_PTRSIZE 4
typedef uint32_t uintptr_t;
typedef int32_t intptr_t;
#endif
#else
#include <inttypes.h>
#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
#define ECB_PTRSIZE 8
#else
#define ECB_PTRSIZE 4
#endif
#endif
#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
#ifndef ECB_OPTIMIZE_SIZE
#if __OPTIMIZE_SIZE__
#define ECB_OPTIMIZE_SIZE 1
#else
#define ECB_OPTIMIZE_SIZE 0
#endif
#endif
/* work around x32 idiocy by defining proper macros */
#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
#if _ILP32
#define ECB_AMD64_X32 1
#else
#define ECB_AMD64 1
#endif
#endif
/* many compilers define _GNUC_ to some versions but then only implement
* what their idiot authors think are the "more important" extensions,
* causing enormous grief in return for some better fake benchmark numbers.
* or so.
* we try to detect these and simply assume they are not gcc - if they have
* an issue with that they should have done it right in the first place.
*/
#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
#define ECB_GCC_VERSION(major,minor) 0
#else
#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
#endif
#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
#if __clang__ && defined __has_builtin
#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
#else
#define ECB_CLANG_BUILTIN(x) 0
#endif
#if __clang__ && defined __has_extension
#define ECB_CLANG_EXTENSION(x) __has_extension (x)
#else
#define ECB_CLANG_EXTENSION(x) 0
#endif
#define ECB_CPP (__cplusplus+0)
#define ECB_CPP11 (__cplusplus >= 201103L)
#define ECB_CPP14 (__cplusplus >= 201402L)
#define ECB_CPP17 (__cplusplus >= 201703L)
#if ECB_CPP
#define ECB_C 0
#define ECB_STDC_VERSION 0
#else
#define ECB_C 1
#define ECB_STDC_VERSION __STDC_VERSION__
#endif
#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
#if ECB_CPP
#define ECB_EXTERN_C extern "C"
#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
#define ECB_EXTERN_C_END }
#else
#define ECB_EXTERN_C extern
#define ECB_EXTERN_C_BEG
#define ECB_EXTERN_C_END
#endif
/*****************************************************************************/
/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
#if ECB_NO_THREADS
#define ECB_NO_SMP 1
#endif
#if ECB_NO_SMP
#define ECB_MEMORY_FENCE do { } while (0)
#endif
/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
#if __xlC__ && ECB_CPP
#include <builtins.h>
#endif
#if 1400 <= _MSC_VER
#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
#endif
#ifndef ECB_MEMORY_FENCE
#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
#if __i386 || __i386__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
#elif ECB_GCC_AMD64
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
#elif defined __ARM_ARCH_2__ \
|| defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
|| defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
|| defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
|| defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
|| defined __ARM_ARCH_5TEJ__
/* should not need any, unless running old code on newer cpu - arm doesn't support that */
#define ECB_MEMORY_FENCE do { } while (0)
#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
|| defined __ARM_ARCH_6T2__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
#elif __aarch64__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
#elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
#elif defined __s390__ || defined __s390x__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
#elif defined __mips__
/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
#elif defined __alpha__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
#elif defined __hppa__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
#elif defined __ia64__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
#elif defined __m68k__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
#elif defined __m88k__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
#elif defined __sh__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
#endif
#endif
#endif
#ifndef ECB_MEMORY_FENCE
#if ECB_GCC_VERSION(4,7)
/* see comment below (stdatomic.h) about the C11 memory model. */
#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
#elif ECB_CLANG_EXTENSION(c_atomic)
/* see comment below (stdatomic.h) about the C11 memory model. */
#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
#define ECB_MEMORY_FENCE __sync_synchronize ()
#elif _MSC_VER >= 1500 /* VC++ 2008 */
/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
#elif _MSC_VER >= 1400 /* VC++ 2005 */
#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
#elif defined _WIN32
#include <WinNT.h>
#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
#include <mbarrier.h>
#define ECB_MEMORY_FENCE __machine_rw_barrier ()
#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
#define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
#elif __xlC__
#define ECB_MEMORY_FENCE __sync ()
#endif
#endif
#ifndef ECB_MEMORY_FENCE
#if ECB_C11 && !defined __STDC_NO_ATOMICS__
/* we assume that these memory fences work on all variables/all memory accesses, */
/* not just C11 atomics and atomic accesses */
#include <stdatomic.h>
#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
#endif
#endif
#ifndef ECB_MEMORY_FENCE
#if !ECB_AVOID_PTHREADS
/*
* if you get undefined symbol references to pthread_mutex_lock,
* or failure to find pthread.h, then you should implement
* the ECB_MEMORY_FENCE operations for your cpu/compiler
* OR provide pthread.h and link against the posix thread library
* of your system.
*/
#include <pthread.h>
#define ECB_NEEDS_PTHREADS 1
#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
#endif
#endif
#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
#endif
#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
#endif
/*****************************************************************************/
#if ECB_CPP
#define ecb_inline static inline
#elif ECB_GCC_VERSION(2,5)
#define ecb_inline static __inline__
#elif ECB_C99
#define ecb_inline static inline
#else
#define ecb_inline static
#endif
#if ECB_GCC_VERSION(3,3)
#define ecb_restrict __restrict__
#elif ECB_C99
#define ecb_restrict restrict
#else
#define ecb_restrict
#endif
typedef int ecb_bool;
#define ECB_CONCAT_(a, b) a ## b
#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
#define ECB_STRINGIFY_(a) # a
#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
#define ecb_function_ ecb_inline
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
#define ecb_attribute(attrlist) __attribute__ (attrlist)
#else
#define ecb_attribute(attrlist)
#endif
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
#define ecb_is_constant(expr) __builtin_constant_p (expr)
#else
/* possible C11 impl for integral types
typedef struct ecb_is_constant_struct ecb_is_constant_struct;
#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
#define ecb_is_constant(expr) 0
#endif
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
#else
#define ecb_expect(expr,value) (expr)
#endif
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
#else
#define ecb_prefetch(addr,rw,locality)
#endif
/* no emulation for ecb_decltype */
#if ECB_CPP11
// older implementations might have problems with decltype(x)::type, work around it
template<class T> struct ecb_decltype_t { typedef T type; };
#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
#define ecb_decltype(x) __typeof__ (x)
#endif
#if _MSC_VER >= 1300
#define ecb_deprecated __declspec (deprecated)
#else
#define ecb_deprecated ecb_attribute ((__deprecated__))
#endif
#if _MSC_VER >= 1500
#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
#elif ECB_GCC_VERSION(4,5)
#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
#else
#define ecb_deprecated_message(msg) ecb_deprecated
#endif
#if _MSC_VER >= 1400
#define ecb_noinline __declspec (noinline)
#else
#define ecb_noinline ecb_attribute ((__noinline__))
#endif
#define ecb_unused ecb_attribute ((__unused__))
#define ecb_const ecb_attribute ((__const__))
#define ecb_pure ecb_attribute ((__pure__))
#if ECB_C11 || __IBMC_NORETURN
/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
#define ecb_noreturn _Noreturn
#elif ECB_CPP11
#define ecb_noreturn [[noreturn]]
#elif _MSC_VER >= 1200
/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
#define ecb_noreturn __declspec (noreturn)
#else
#define ecb_noreturn ecb_attribute ((__noreturn__))
#endif
#if ECB_GCC_VERSION(4,3)
#define ecb_artificial ecb_attribute ((__artificial__))
#define ecb_hot ecb_attribute ((__hot__))
#define ecb_cold ecb_attribute ((__cold__))
#else
#define ecb_artificial
#define ecb_hot
#define ecb_cold
#endif
/* put around conditional expressions if you are very sure that the */
/* expression is mostly true or mostly false. note that these return */
/* booleans, not the expression. */
#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
/* for compatibility to the rest of the world */
#define ecb_likely(expr) ecb_expect_true (expr)
#define ecb_unlikely(expr) ecb_expect_false (expr)
/* count trailing zero bits and count # of one bits */
#if ECB_GCC_VERSION(3,4) \
|| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
&& ECB_CLANG_BUILTIN(__builtin_popcount))
/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
#define ecb_ctz32(x) __builtin_ctz (x)
#define ecb_ctz64(x) __builtin_ctzll (x)
#define ecb_popcount32(x) __builtin_popcount (x)
/* no popcountll */
#else
ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
ecb_function_ ecb_const int
ecb_ctz32 (uint32_t x)
{
#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
unsigned long r;
_BitScanForward (&r, x);
return (int)r;
#else
int r = 0;
x &= ~x + 1; /* this isolates the lowest bit */
#if ECB_branchless_on_i386
r += !!(x & 0xaaaaaaaa) << 0;
r += !!(x & 0xcccccccc) << 1;
r += !!(x & 0xf0f0f0f0) << 2;
r += !!(x & 0xff00ff00) << 3;
r += !!(x & 0xffff0000) << 4;
#else
if (x & 0xaaaaaaaa) r += 1;
if (x & 0xcccccccc) r += 2;
if (x & 0xf0f0f0f0) r += 4;
if (x & 0xff00ff00) r += 8;
if (x & 0xffff0000) r += 16;
#endif
return r;
#endif
}
ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
ecb_function_ ecb_const int
ecb_ctz64 (uint64_t x)
{
#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
unsigned long r;
_BitScanForward64 (&r, x);
return (int)r;
#else
int shift = x & 0xffffffff ? 0 : 32;
return ecb_ctz32 (x >> shift) + shift;
#endif
}
ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
ecb_function_ ecb_const int
ecb_popcount32 (uint32_t x)
{
x -= (x >> 1) & 0x55555555;
x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
x = ((x >> 4) + x) & 0x0f0f0f0f;
x *= 0x01010101;
return x >> 24;
}
ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
{
#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
unsigned long r;
_BitScanReverse (&r, x);
return (int)r;
#else
int r = 0;
if (x >> 16) { x >>= 16; r += 16; }
if (x >> 8) { x >>= 8; r += 8; }
if (x >> 4) { x >>= 4; r += 4; }
if (x >> 2) { x >>= 2; r += 2; }
if (x >> 1) { r += 1; }
return r;
#endif
}
ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
{
#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
unsigned long r;
_BitScanReverse64 (&r, x);
return (int)r;
#else
int r = 0;
if (x >> 32) { x >>= 32; r += 32; }
return r + ecb_ld32 (x);
#endif
}
#endif
ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
{
return ( (x * 0x0802U & 0x22110U)
| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
}
ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
{
x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
x = ( x >> 8 ) | ( x << 8);
return x;
}
ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
{
x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
x = ( x >> 16 ) | ( x << 16);
return x;
}
/* popcount64 is only available on 64 bit cpus as gcc builtin */
/* so for this version we are lazy */
ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
ecb_function_ ecb_const int
ecb_popcount64 (uint64_t x)
{
return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
}
ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
#if ECB_CPP
inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
#endif
#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
#if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
#define ecb_bswap16(x) __builtin_bswap16 (x)
#else
#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
#endif
#define ecb_bswap32(x) __builtin_bswap32 (x)
#define ecb_bswap64(x) __builtin_bswap64 (x)
#elif _MSC_VER
#include <stdlib.h>
#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
#else
ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
ecb_function_ ecb_const uint16_t
ecb_bswap16 (uint16_t x)
{
return ecb_rotl16 (x, 8);
}
ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
ecb_function_ ecb_const uint32_t
ecb_bswap32 (uint32_t x)
{
return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
}
ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
ecb_function_ ecb_const uint64_t
ecb_bswap64 (uint64_t x)
{
return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
}
#endif
#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
#define ecb_unreachable() __builtin_unreachable ()
#else
/* this seems to work fine, but gcc always emits a warning for it :/ */
ecb_inline ecb_noreturn void ecb_unreachable (void);
ecb_inline ecb_noreturn void ecb_unreachable (void) { }
#endif
/* try to tell the compiler that some condition is definitely true */
#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
ecb_inline ecb_const uint32_t
ecb_byteorder_helper (void)
{
/* the union code still generates code under pressure in gcc, */
/* but less than using pointers, and always seems to */
/* successfully return a constant. */
/* the reason why we have this horrible preprocessor mess */
/* is to avoid it in all cases, at least on common architectures */
/* or when using a recent enough gcc version (>= 4.6) */
#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
|| ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
#define ECB_LITTLE_ENDIAN 1
return 0x44332211;
#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
|| ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
#define ECB_BIG_ENDIAN 1
return 0x11223344;
#else
union
{
uint8_t c[4];
uint32_t u;
} u = { 0x11, 0x22, 0x33, 0x44 };
return u.u;
#endif
}
ecb_inline ecb_const ecb_bool ecb_big_endian (void);
ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
ecb_inline ecb_const ecb_bool ecb_little_endian (void);
ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
/*****************************************************************************/
/* unaligned load/store */
ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
#if ECB_CPP
inline uint8_t ecb_bswap (uint8_t v) { return v; }
inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
#endif
/*****************************************************************************/
#if ECB_GCC_VERSION(3,0) || ECB_C99
#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
#else
#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
#endif
#if ECB_CPP
template<typename T>
static inline T ecb_div_rd (T val, T div)
{
return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
}
template<typename T>
static inline T ecb_div_ru (T val, T div)
{
return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
}
#else
#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
#endif
#if ecb_cplusplus_does_not_suck
/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
template<typename T, int N>
static inline int ecb_array_length (const T (&arr)[N])
{
return N;
}
#else
#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
#endif
/*****************************************************************************/
ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
ecb_function_ ecb_const uint32_t
ecb_binary16_to_binary32 (uint32_t x)
{
unsigned int s = (x & 0x8000) << (31 - 15);
int e = (x >> 10) & 0x001f;
unsigned int m = x & 0x03ff;
if (ecb_expect_false (e == 31))
/* infinity or NaN */
e = 255 - (127 - 15);
else if (ecb_expect_false (!e))
{
if (ecb_expect_true (!m))
/* zero, handled by code below by forcing e to 0 */
e = 0 - (127 - 15);
else
{
/* subnormal, renormalise */
unsigned int s = 10 - ecb_ld32 (m);
m = (m << s) & 0x3ff; /* mask implicit bit */
e -= s - 1;
}
}
/* e and m now are normalised, or zero, (or inf or nan) */
e += 127 - 15;
return s | (e << 23) | (m << (23 - 10));
}
ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
ecb_function_ ecb_const uint16_t
ecb_binary32_to_binary16 (uint32_t x)
{
unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
unsigned int m = x & 0x007fffff;
x &= 0x7fffffff;
/* if it's within range of binary16 normals, use fast path */
if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
{
/* mantissa round-to-even */
m += 0x00000fff + ((m >> (23 - 10)) & 1);
/* handle overflow */
if (ecb_expect_false (m >= 0x00800000))
{
m >>= 1;
e += 1;
}
return s | (e << 10) | (m >> (23 - 10));
}
/* handle large numbers and infinity */
if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
return s | 0x7c00;
/* handle zero, subnormals and small numbers */
if (ecb_expect_true (x < 0x38800000))
{
/* zero */
if (ecb_expect_true (!x))
return s;
/* handle subnormals */
/* too small, will be zero */
if (e < (unsigned)(14 - 24)) /* might not be sharp, but is good enough */
return s;
m |= 0x00800000; /* make implicit bit explicit */
/* very tricky - we need to round to the nearest e (+10) bit value */
{
unsigned int bits = 14 - e;
unsigned int half = (1 << (bits - 1)) - 1;
unsigned int even = (m >> bits) & 1;
/* if this overflows, we will end up with a normalised number */
m = (m + half + even) >> bits;
}
return s | m;
}
/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
m >>= 13;
return s | 0x7c00 | m | !m;
}
/*******************************************************************************/
/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
/* basically, everything uses "ieee pure-endian" floating point numbers */
/* the only noteworthy exception is ancient armle, which uses order 43218765 */
#if 0 \
|| __i386 || __i386__ \
|| ECB_GCC_AMD64 \
|| __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
|| defined __s390__ || defined __s390x__ \
|| defined __mips__ \
|| defined __alpha__ \
|| defined __hppa__ \
|| defined __ia64__ \
|| defined __m68k__ \
|| defined __m88k__ \
|| defined __sh__ \
|| defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
|| (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
|| defined __aarch64__
#define ECB_STDFP 1
#else
#define ECB_STDFP 0
#endif
#ifndef ECB_NO_LIBM
#include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
/* only the oldest of old doesn't have this one. solaris. */
#ifdef INFINITY
#define ECB_INFINITY INFINITY
#else
#define ECB_INFINITY HUGE_VAL
#endif
#ifdef NAN
#define ECB_NAN NAN
#else
#define ECB_NAN ECB_INFINITY
#endif
#if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
#define ecb_ldexpf(x,e) ldexpf ((x), (e))
#define ecb_frexpf(x,e) frexpf ((x), (e))
#else
#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
#endif
/* convert a float to ieee single/binary32 */
ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
ecb_function_ ecb_const uint32_t
ecb_float_to_binary32 (float x)
{
uint32_t r;
#if ECB_STDFP
memcpy (&r, &x, 4);
#else
/* slow emulation, works for anything but -0 */
uint32_t m;
int e;
if (x == 0e0f ) return 0x00000000U;
if (x > +3.40282346638528860e+38f) return 0x7f800000U;
if (x < -3.40282346638528860e+38f) return 0xff800000U;
if (x != x ) return 0x7fbfffffU;
m = ecb_frexpf (x, &e) * 0x1000000U;
r = m & 0x80000000U;
if (r)
m = -m;
if (e <= -126)
{
m &= 0xffffffU;
m >>= (-125 - e);
e = -126;
}
r |= (e + 126) << 23;
r |= m & 0x7fffffU;
#endif
return r;
}
/* converts an ieee single/binary32 to a float */
ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
ecb_function_ ecb_const float
ecb_binary32_to_float (uint32_t x)
{
float r;
#if ECB_STDFP
memcpy (&r, &x, 4);
#else
/* emulation, only works for normals and subnormals and +0 */
int neg = x >> 31;
int e = (x >> 23) & 0xffU;
x &= 0x7fffffU;
if (e)
x |= 0x800000U;
else
e = 1;
/* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
r = neg ? -r : r;
#endif
return r;
}
/* convert a double to ieee double/binary64 */
ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
ecb_function_ ecb_const uint64_t
ecb_double_to_binary64 (double x)
{
uint64_t r;
#if ECB_STDFP
memcpy (&r, &x, 8);
#else
/* slow emulation, works for anything but -0 */
uint64_t m;
int e;
if (x == 0e0 ) return 0x0000000000000000U;
if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
if (x != x ) return 0X7ff7ffffffffffffU;
m = frexp (x, &e) * 0x20000000000000U;
r = m & 0x8000000000000000;;
if (r)
m = -m;
if (e <= -1022)
{
m &= 0x1fffffffffffffU;
m >>= (-1021 - e);
e = -1022;
}
r |= ((uint64_t)(e + 1022)) << 52;
r |= m & 0xfffffffffffffU;
#endif
return r;
}
/* converts an ieee double/binary64 to a double */
ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
ecb_function_ ecb_const double
ecb_binary64_to_double (uint64_t x)
{
double r;
#if ECB_STDFP
memcpy (&r, &x, 8);
#else
/* emulation, only works for normals and subnormals and +0 */
int neg = x >> 63;
int e = (x >> 52) & 0x7ffU;
x &= 0xfffffffffffffU;
if (e)
x |= 0x10000000000000U;
else
e = 1;
/* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
r = neg ? -r : r;
#endif
return r;
}
/* convert a float to ieee half/binary16 */
ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
ecb_function_ ecb_const uint16_t
ecb_float_to_binary16 (float x)
{
return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
}
/* convert an ieee half/binary16 to float */
ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
ecb_function_ ecb_const float
ecb_binary16_to_float (uint16_t x)
{
return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
}
#endif
#endif
/* ECB.H END */
#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
/* if your architecture doesn't need memory fences, e.g. because it is
* single-cpu/core, or if you use libev in a project that doesn't use libev
* from multiple threads, then you can define ECB_NO_THREADS when compiling
* libev, in which cases the memory fences become nops.
* alternatively, you can remove this #error and link against libpthread,
* which will then provide the memory fences.
*/
# error "memory fences not defined for your architecture, please report"
#endif
#ifndef ECB_MEMORY_FENCE
# define ECB_MEMORY_FENCE do { } while (0)
# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
#endif
#define inline_size ecb_inline
#if EV_FEATURE_CODE
# define inline_speed ecb_inline
#else
# define inline_speed ecb_noinline static
#endif
/*****************************************************************************/
/* raw syscall wrappers */
#if EV_NEED_SYSCALL
#include <sys/syscall.h>
/*
* define some syscall wrappers for common architectures
* this is mostly for nice looks during debugging, not performance.
* our syscalls return < 0, not == -1, on error. which is good
* enough for linux aio.
* TODO: arm is also common nowadays, maybe even mips and x86
* TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
*/
#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
/* the costly errno access probably kills this for size optimisation */
#define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
({ \
long res; \
register unsigned long r6 __asm__ ("r9" ); \
register unsigned long r5 __asm__ ("r8" ); \
register unsigned long r4 __asm__ ("r10"); \
register unsigned long r3 __asm__ ("rdx"); \
register unsigned long r2 __asm__ ("rsi"); \
register unsigned long r1 __asm__ ("rdi"); \
if (narg >= 6) r6 = (unsigned long)(arg6); \
if (narg >= 5) r5 = (unsigned long)(arg5); \
if (narg >= 4) r4 = (unsigned long)(arg4); \
if (narg >= 3) r3 = (unsigned long)(arg3); \
if (narg >= 2) r2 = (unsigned long)(arg2); \
if (narg >= 1) r1 = (unsigned long)(arg1); \
__asm__ __volatile__ ( \
"syscall\n\t" \
: "=a" (res) \
: "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
: "cc", "r11", "cx", "memory"); \
errno = -res; \
res; \
})
#endif
#ifdef ev_syscall
#define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
#define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
#define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
#define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
#define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
#define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
#define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
#else
#define ev_syscall0(nr) syscall (nr)
#define ev_syscall1(nr,arg1) syscall (nr, arg1)
#define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
#define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
#define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
#define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
#define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
#endif
#endif
/*****************************************************************************/
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
#if EV_MINPRI == EV_MAXPRI
# define ABSPRI(w) (((W)w), 0)
#else
# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
#endif
#define EMPTY /* required for microsofts broken pseudo-c compiler */
typedef ev_watcher *W;
typedef ev_watcher_list *WL;
typedef ev_watcher_time *WT;
#define ev_active(w) ((W)(w))->active
#define ev_at(w) ((WT)(w))->at
#if EV_USE_REALTIME
/* sig_atomic_t is used to avoid per-thread variables or locking but still */
/* giving it a reasonably high chance of working on typical architectures */
static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
#endif
#if EV_USE_MONOTONIC
static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
#endif
#ifndef EV_FD_TO_WIN32_HANDLE
# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
#endif
#ifndef EV_WIN32_HANDLE_TO_FD
# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
#endif
#ifndef EV_WIN32_CLOSE_FD
# define EV_WIN32_CLOSE_FD(fd) close (fd)
#endif
#ifdef _WIN32
# include "ev_win32.c"
#endif
/*****************************************************************************/
#if EV_USE_LINUXAIO
# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
#endif
/* define a suitable floor function (only used by periodics atm) */
#if EV_USE_FLOOR
# include <math.h>
# define ev_floor(v) floor (v)
#else
#include <float.h>
/* a floor() replacement function, should be independent of ev_tstamp type */
ecb_noinline
static ev_tstamp
ev_floor (ev_tstamp v)
{
/* the choice of shift factor is not terribly important */
#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
#else
const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
#endif
/* special treatment for negative arguments */
if (ecb_expect_false (v < 0.))
{
ev_tstamp f = -ev_floor (-v);
return f - (f == v ? 0 : 1);
}
/* argument too large for an unsigned long? then reduce it */
if (ecb_expect_false (v >= shift))
{
ev_tstamp f;
if (v == v - 1.)
return v; /* very large numbers are assumed to be integer */
f = shift * ev_floor (v * (1. / shift));
return f + ev_floor (v - f);
}
/* fits into an unsigned long */
return (unsigned long)v;
}
#endif
/*****************************************************************************/
#ifdef __linux
# include <sys/utsname.h>
#endif
ecb_noinline ecb_cold
static unsigned int
ev_linux_version (void)
{
#ifdef __linux
unsigned int v = 0;
struct utsname buf;
int i;
char *p = buf.release;
if (uname (&buf))
return 0;
for (i = 3+1; --i; )
{
unsigned int c = 0;
for (;;)
{
if (*p >= '0' && *p <= '9')
c = c * 10 + *p++ - '0';
else
{
p += *p == '.';
break;
}
}
v = (v << 8) | c;
}
return v;
#else
return 0;
#endif
}
/*****************************************************************************/
#if EV_AVOID_STDIO
ecb_noinline ecb_cold
static void
ev_printerr (const char *msg)
{
write (STDERR_FILENO, msg, strlen (msg));
}
#endif
static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
ecb_cold
void
ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
{
syserr_cb = cb;
}
ecb_noinline ecb_cold
static void
ev_syserr (const char *msg)
{
if (!msg)
msg = "(libev) system error";
if (syserr_cb)
syserr_cb (msg);
else
{
#if EV_AVOID_STDIO
ev_printerr (msg);
ev_printerr (": ");
ev_printerr (strerror (errno));
ev_printerr ("\n");
#else
perror (msg);
#endif
abort ();
}
}
static void *
ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
{
/* some systems, notably openbsd and darwin, fail to properly
* implement realloc (x, 0) (as required by both ansi c-89 and
* the single unix specification, so work around them here.
* recently, also (at least) fedora and debian started breaking it,
* despite documenting it otherwise.
*/
if (size)
return realloc (ptr, size);
free (ptr);
return 0;
}
static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
ecb_cold
void
ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
{
alloc = cb;
}
inline_speed void *
ev_realloc (void *ptr, long size)
{
ptr = alloc (ptr, size);
if (!ptr && size)
{
#if EV_AVOID_STDIO
ev_printerr ("(libev) memory allocation failed, aborting.\n");
#else
fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
#endif
abort ();
}
return ptr;
}
#define ev_malloc(size) ev_realloc (0, (size))
#define ev_free(ptr) ev_realloc ((ptr), 0)
/*****************************************************************************/
/* set in reify when reification needed */
#define EV_ANFD_REIFY 1
/* file descriptor info structure */
typedef struct
{
WL head;
unsigned char events; /* the events watched for */
unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
unsigned char emask; /* some backends store the actual kernel mask in here */
unsigned char eflags; /* flags field for use by backends */
#if EV_USE_EPOLL
unsigned int egen; /* generation counter to counter epoll bugs */
#endif
#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
SOCKET handle;
#endif
#if EV_USE_IOCP
OVERLAPPED or, ow;
#endif
} ANFD;
/* stores the pending event set for a given watcher */
typedef struct
{
W w;
int events; /* the pending event set for the given watcher */
} ANPENDING;
#if EV_USE_INOTIFY
/* hash table entry per inotify-id */
typedef struct
{
WL head;
} ANFS;
#endif
/* Heap Entry */
#if EV_HEAP_CACHE_AT
/* a heap element */
typedef struct {
ev_tstamp at;
WT w;
} ANHE;
#define ANHE_w(he) (he).w /* access watcher, read-write */
#define ANHE_at(he) (he).at /* access cached at, read-only */
#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
#else
/* a heap element */
typedef WT ANHE;
#define ANHE_w(he) (he)
#define ANHE_at(he) (he)->at
#define ANHE_at_cache(he)
#endif
#if EV_MULTIPLICITY
struct ev_loop
{
ev_tstamp ev_rt_now;
#define ev_rt_now ((loop)->ev_rt_now)
#define VAR(name,decl) decl;
#include "ev_vars.h"
#undef VAR
};
#include "ev_wrap.h"
static struct ev_loop default_loop_struct;
EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
#else
EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
#define VAR(name,decl) static decl;
#include "ev_vars.h"
#undef VAR
static int ev_default_loop_ptr;
#endif
#if EV_FEATURE_API
# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
# define EV_INVOKE_PENDING invoke_cb (EV_A)
#else
# define EV_RELEASE_CB (void)0
# define EV_ACQUIRE_CB (void)0
# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
#endif
#define EVBREAK_RECURSE 0x80
/*****************************************************************************/
#ifndef EV_HAVE_EV_TIME
ev_tstamp
ev_time (void) EV_NOEXCEPT
{
#if EV_USE_REALTIME
if (ecb_expect_true (have_realtime))
{
struct timespec ts;
clock_gettime (CLOCK_REALTIME, &ts);
return EV_TS_GET (ts);
}
#endif
{
struct timeval tv;
gettimeofday (&tv, 0);
return EV_TV_GET (tv);
}
}
#endif
inline_size ev_tstamp
get_clock (void)
{
#if EV_USE_MONOTONIC
if (ecb_expect_true (have_monotonic))
{
struct timespec ts;
clock_gettime (CLOCK_MONOTONIC, &ts);
return EV_TS_GET (ts);
}
#endif
return ev_time ();
}
#if EV_MULTIPLICITY
ev_tstamp
ev_now (EV_P) EV_NOEXCEPT
{
return ev_rt_now;
}
#endif
void
ev_sleep (ev_tstamp delay) EV_NOEXCEPT
{
if (delay > EV_TS_CONST (0.))
{
#if EV_USE_NANOSLEEP
struct timespec ts;
EV_TS_SET (ts, delay);
nanosleep (&ts, 0);
#elif defined _WIN32
/* maybe this should round up, as ms is very low resolution */
/* compared to select (µs) or nanosleep (ns) */
Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
#else
struct timeval tv;
/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
/* something not guaranteed by newer posix versions, but guaranteed */
/* by older ones */
EV_TV_SET (tv, delay);
select (0, 0, 0, 0, &tv);
#endif
}
}
/*****************************************************************************/
#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
/* find a suitable new size for the given array, */
/* hopefully by rounding to a nice-to-malloc size */
inline_size int
array_nextsize (int elem, int cur, int cnt)
{
int ncur = cur + 1;
do
ncur <<= 1;
while (cnt > ncur);
/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
if (elem * ncur > MALLOC_ROUND - (int)sizeof (void *) * 4)
{
ncur *= elem;
ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
ncur = ncur - sizeof (void *) * 4;
ncur /= elem;
}
return ncur;
}
ecb_noinline ecb_cold
static void *
array_realloc (int elem, void *base, int *cur, int cnt)
{
*cur = array_nextsize (elem, *cur, cnt);
return ev_realloc (base, elem * *cur);
}
#define array_needsize_noinit(base,offset,count)
#define array_needsize_zerofill(base,offset,count) \
memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
#define array_needsize(type,base,cur,cnt,init) \
if (ecb_expect_false ((cnt) > (cur))) \
{ \
ecb_unused int ocur_ = (cur); \
(base) = (type *)array_realloc \
(sizeof (type), (base), &(cur), (cnt)); \
init ((base), ocur_, ((cur) - ocur_)); \
}
#if 0
#define array_slim(type,stem) \
if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
{ \
stem ## max = array_roundsize (stem ## cnt >> 1); \
base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
}
#endif
#define array_free(stem, idx) \
ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
/*****************************************************************************/
/* dummy callback for pending events */
ecb_noinline
static void
pendingcb (EV_P_ ev_prepare *w, int revents)
{
}
ecb_noinline
void
ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
{
W w_ = (W)w;
int pri = ABSPRI (w_);
if (ecb_expect_false (w_->pending))
pendings [pri][w_->pending - 1].events |= revents;
else
{
w_->pending = ++pendingcnt [pri];
array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
pendings [pri][w_->pending - 1].w = w_;
pendings [pri][w_->pending - 1].events = revents;
}
pendingpri = NUMPRI - 1;
}
inline_speed void
feed_reverse (EV_P_ W w)
{
array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
rfeeds [rfeedcnt++] = w;
}
inline_size void
feed_reverse_done (EV_P_ int revents)
{
do
ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
while (rfeedcnt);
}
inline_speed void
queue_events (EV_P_ W *events, int eventcnt, int type)
{
int i;
for (i = 0; i < eventcnt; ++i)
ev_feed_event (EV_A_ events [i], type);
}
/*****************************************************************************/
inline_speed void
fd_event_nocheck (EV_P_ int fd, int revents)
{
ANFD *anfd = anfds + fd;
ev_io *w;
for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
{
int ev = w->events & revents;
if (ev)
ev_feed_event (EV_A_ (W)w, ev);
}
}
/* do not submit kernel events for fds that have reify set */
/* because that means they changed while we were polling for new events */
inline_speed void
fd_event (EV_P_ int fd, int revents)
{
ANFD *anfd = anfds + fd;
if (ecb_expect_true (!anfd->reify))
fd_event_nocheck (EV_A_ fd, revents);
}
void
ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
{
if (fd >= 0 && fd < anfdmax)
fd_event_nocheck (EV_A_ fd, revents);
}
/* make sure the external fd watch events are in-sync */
/* with the kernel/libev internal state */
inline_size void
fd_reify (EV_P)
{
int i;
/* most backends do not modify the fdchanges list in backend_modfiy.
* except io_uring, which has fixed-size buffers which might force us
* to handle events in backend_modify, causing fdchanges to be amended,
* which could result in an endless loop.
* to avoid this, we do not dynamically handle fds that were added
* during fd_reify. that means that for those backends, fdchangecnt
* might be non-zero during poll, which must cause them to not block.
* to not put too much of a burden on other backends, this detail
* needs to be handled in the backend.
*/
int changecnt = fdchangecnt;
#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
for (i = 0; i < changecnt; ++i)
{
int fd = fdchanges [i];
ANFD *anfd = anfds + fd;
if (anfd->reify & EV__IOFDSET && anfd->head)
{
SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
if (handle != anfd->handle)
{
unsigned long arg;
assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
/* handle changed, but fd didn't - we need to do it in two steps */
backend_modify (EV_A_ fd, anfd->events, 0);
anfd->events = 0;
anfd->handle = handle;
}
}
}
#endif
for (i = 0; i < changecnt; ++i)
{
int fd = fdchanges [i];
ANFD *anfd = anfds + fd;
ev_io *w;
unsigned char o_events = anfd->events;
unsigned char o_reify = anfd->reify;
anfd->reify = 0;
/*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
{
anfd->events = 0;
for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
anfd->events |= (unsigned char)w->events;
if (o_events != anfd->events)
o_reify = EV__IOFDSET; /* actually |= */
}
if (o_reify & EV__IOFDSET)
backend_modify (EV_A_ fd, o_events, anfd->events);
}
/* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
* this is a rare case (see beginning comment in this function), so we copy them to the
* front and hope the backend handles this case.
*/
if (ecb_expect_false (fdchangecnt != changecnt))
memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
fdchangecnt -= changecnt;
}
/* something about the given fd changed */
inline_size
void
fd_change (EV_P_ int fd, int flags)
{
unsigned char reify = anfds [fd].reify;
anfds [fd].reify = reify | flags;
if (ecb_expect_true (!reify))
{
++fdchangecnt;
array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
fdchanges [fdchangecnt - 1] = fd;
}
}
/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
inline_speed ecb_cold void
fd_kill (EV_P_ int fd)
{
ev_io *w;
while ((w = (ev_io *)anfds [fd].head))
{
ev_io_stop (EV_A_ w);
ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
}
}
/* check whether the given fd is actually valid, for error recovery */
inline_size ecb_cold int
fd_valid (int fd)
{
#ifdef _WIN32
return EV_FD_TO_WIN32_HANDLE (fd) != -1;
#else
return fcntl (fd, F_GETFD) != -1;
#endif
}
/* called on EBADF to verify fds */
ecb_noinline ecb_cold
static void
fd_ebadf (EV_P)
{
int fd;
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
if (!fd_valid (fd) && errno == EBADF)
fd_kill (EV_A_ fd);
}
/* called on ENOMEM in select/poll to kill some fds and retry */
ecb_noinline ecb_cold
static void
fd_enomem (EV_P)
{
int fd;
for (fd = anfdmax; fd--; )
if (anfds [fd].events)
{
fd_kill (EV_A_ fd);
break;
}
}
/* usually called after fork if backend needs to re-arm all fds from scratch */
ecb_noinline
static void
fd_rearm_all (EV_P)
{
int fd;
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
{
anfds [fd].events = 0;
anfds [fd].emask = 0;
fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
}
}
/* used to prepare libev internal fd's */
/* this is not fork-safe */
inline_speed void
fd_intern (int fd)
{
#ifdef _WIN32
unsigned long arg = 1;
ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
#else
fcntl (fd, F_SETFD, FD_CLOEXEC);
fcntl (fd, F_SETFL, O_NONBLOCK);
#endif
}
/*****************************************************************************/
/*
* the heap functions want a real array index. array index 0 is guaranteed to not
* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
* the branching factor of the d-tree.
*/
/*
* at the moment we allow libev the luxury of two heaps,
* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
* which is more cache-efficient.
* the difference is about 5% with 50000+ watchers.
*/
#if EV_USE_4HEAP
#define DHEAP 4
#define HEAP0 (DHEAP - 1) /* index of first element in heap */
#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
#define UPHEAP_DONE(p,k) ((p) == (k))
/* away from the root */
inline_speed void
downheap (ANHE *heap, int N, int k)
{
ANHE he = heap [k];
ANHE *E = heap + N + HEAP0;
for (;;)
{
ev_tstamp minat;
ANHE *minpos;
ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
/* find minimum child */
if (ecb_expect_true (pos + DHEAP - 1 < E))
{
/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
}
else if (pos < E)
{
/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
}
else
break;
if (ANHE_at (he) <= minat)
break;
heap [k] = *minpos;
ev_active (ANHE_w (*minpos)) = k;
k = minpos - heap;
}
heap [k] = he;
ev_active (ANHE_w (he)) = k;
}
#else /* not 4HEAP */
#define HEAP0 1
#define HPARENT(k) ((k) >> 1)
#define UPHEAP_DONE(p,k) (!(p))
/* away from the root */
inline_speed void
downheap (ANHE *heap, int N, int k)
{
ANHE he = heap [k];
for (;;)
{
int c = k << 1;
if (c >= N + HEAP0)
break;
c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
? 1 : 0;
if (ANHE_at (he) <= ANHE_at (heap [c]))
break;
heap [k] = heap [c];
ev_active (ANHE_w (heap [k])) = k;
k = c;
}
heap [k] = he;
ev_active (ANHE_w (he)) = k;
}
#endif
/* towards the root */
inline_speed void
upheap (ANHE *heap, int k)
{
ANHE he = heap [k];
for (;;)
{
int p = HPARENT (k);
if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
break;
heap [k] = heap [p];
ev_active (ANHE_w (heap [k])) = k;
k = p;
}
heap [k] = he;
ev_active (ANHE_w (he)) = k;
}
/* move an element suitably so it is in a correct place */
inline_size void
adjustheap (ANHE *heap, int N, int k)
{
if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
upheap (heap, k);
else
downheap (heap, N, k);
}
/* rebuild the heap: this function is used only once and executed rarely */
inline_size void
reheap (ANHE *heap, int N)
{
int i;
/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
for (i = 0; i < N; ++i)
upheap (heap, i + HEAP0);
}
/*****************************************************************************/
/* associate signal watchers to a signal */
typedef struct
{
EV_ATOMIC_T pending;
#if EV_MULTIPLICITY
EV_P;
#endif
WL head;
} ANSIG;
static ANSIG signals [EV_NSIG - 1];
/*****************************************************************************/
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
ecb_noinline ecb_cold
static void
evpipe_init (EV_P)
{
if (!ev_is_active (&pipe_w))
{
int fds [2];
# if EV_USE_EVENTFD
fds [0] = -1;
fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
if (fds [1] < 0 && errno == EINVAL)
fds [1] = eventfd (0, 0);
if (fds [1] < 0)
# endif
{
while (pipe (fds))
ev_syserr ("(libev) error creating signal/async pipe");
fd_intern (fds [0]);
}
evpipe [0] = fds [0];
if (evpipe [1] < 0)
evpipe [1] = fds [1]; /* first call, set write fd */
else
{
/* on subsequent calls, do not change evpipe [1] */
/* so that evpipe_write can always rely on its value. */
/* this branch does not do anything sensible on windows, */
/* so must not be executed on windows */
dup2 (fds [1], evpipe [1]);
close (fds [1]);
}
fd_intern (evpipe [1]);
ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
ev_io_start (EV_A_ &pipe_w);
ev_unref (EV_A); /* watcher should not keep loop alive */
}
}
inline_speed void
evpipe_write (EV_P_ EV_ATOMIC_T *flag)
{
ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
if (ecb_expect_true (*flag))
return;
*flag = 1;
ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
pipe_write_skipped = 1;
ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
if (pipe_write_wanted)
{
int old_errno;
pipe_write_skipped = 0;
ECB_MEMORY_FENCE_RELEASE;
old_errno = errno; /* save errno because write will clobber it */
#if EV_USE_EVENTFD
if (evpipe [0] < 0)
{
uint64_t counter = 1;
write (evpipe [1], &counter, sizeof (uint64_t));
}
else
#endif
{
#ifdef _WIN32
WSABUF buf;
DWORD sent;
buf.buf = (char *)&buf;
buf.len = 1;
WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
#else
write (evpipe [1], &(evpipe [1]), 1);
#endif
}
errno = old_errno;
}
}
/* called whenever the libev signal pipe */
/* got some events (signal, async) */
static void
pipecb (EV_P_ ev_io *iow, int revents)
{
int i;
if (revents & EV_READ)
{
#if EV_USE_EVENTFD
if (evpipe [0] < 0)
{
uint64_t counter;
read (evpipe [1], &counter, sizeof (uint64_t));
}
else
#endif
{
char dummy[4];
#ifdef _WIN32
WSABUF buf;
DWORD recvd;
DWORD flags = 0;
buf.buf = dummy;
buf.len = sizeof (dummy);
WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
#else
read (evpipe [0], &dummy, sizeof (dummy));
#endif
}
}
pipe_write_skipped = 0;
ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
#if EV_SIGNAL_ENABLE
if (sig_pending)
{
sig_pending = 0;
ECB_MEMORY_FENCE;
for (i = EV_NSIG - 1; i--; )
if (ecb_expect_false (signals [i].pending))
ev_feed_signal_event (EV_A_ i + 1);
}
#endif
#if EV_ASYNC_ENABLE
if (async_pending)
{
async_pending = 0;
ECB_MEMORY_FENCE;
for (i = asynccnt; i--; )
if (asyncs [i]->sent)
{
asyncs [i]->sent = 0;
ECB_MEMORY_FENCE_RELEASE;
ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
}
}
#endif
}
/*****************************************************************************/
void
ev_feed_signal (int signum) EV_NOEXCEPT
{
#if EV_MULTIPLICITY
EV_P;
ECB_MEMORY_FENCE_ACQUIRE;
EV_A = signals [signum - 1].loop;
if (!EV_A)
return;
#endif
signals [signum - 1].pending = 1;
evpipe_write (EV_A_ &sig_pending);
}
static void
ev_sighandler (int signum)
{
#ifdef _WIN32
signal (signum, ev_sighandler);
#endif
ev_feed_signal (signum);
}
ecb_noinline
void
ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
{
WL w;
if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
return;
--signum;
#if EV_MULTIPLICITY
/* it is permissible to try to feed a signal to the wrong loop */
/* or, likely more useful, feeding a signal nobody is waiting for */
if (ecb_expect_false (signals [signum].loop != EV_A))
return;
#endif
signals [signum].pending = 0;
ECB_MEMORY_FENCE_RELEASE;
for (w = signals [signum].head; w; w = w->next)
ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
}
#if EV_USE_SIGNALFD
static void
sigfdcb (EV_P_ ev_io *iow, int revents)
{
struct signalfd_siginfo si[2], *sip; /* these structs are big */
for (;;)
{
ssize_t res = read (sigfd, si, sizeof (si));
/* not ISO-C, as res might be -1, but works with SuS */
for (sip = si; (char *)sip < (char *)si + res; ++sip)
ev_feed_signal_event (EV_A_ sip->ssi_signo);
if (res < (ssize_t)sizeof (si))
break;
}
}
#endif
#endif
/*****************************************************************************/
#if EV_CHILD_ENABLE
static WL childs [EV_PID_HASHSIZE];
static ev_signal childev;
#ifndef WIFCONTINUED
# define WIFCONTINUED(status) 0
#endif
/* handle a single child status event */
inline_speed void
child_reap (EV_P_ int chain, int pid, int status)
{
ev_child *w;
int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
{
if ((w->pid == pid || !w->pid)
&& (!traced || (w->flags & 1)))
{
ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
w->rpid = pid;
w->rstatus = status;
ev_feed_event (EV_A_ (W)w, EV_CHILD);
}
}
}
#ifndef WCONTINUED
# define WCONTINUED 0
#endif
/* called on sigchld etc., calls waitpid */
static void
childcb (EV_P_ ev_signal *sw, int revents)
{
int pid, status;
/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
if (!WCONTINUED
|| errno != EINVAL
|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
return;
/* make sure we are called again until all children have been reaped */
/* we need to do it this way so that the callback gets called before we continue */
ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
child_reap (EV_A_ pid, pid, status);
if ((EV_PID_HASHSIZE) > 1)
child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
}
#endif
/*****************************************************************************/
#if EV_USE_TIMERFD
static void periodics_reschedule (EV_P);
static void
timerfdcb (EV_P_ ev_io *iow, int revents)
{
struct itimerspec its = { 0 };
its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
ev_rt_now = ev_time ();
/* periodics_reschedule only needs ev_rt_now */
/* but maybe in the future we want the full treatment. */
/*
now_floor = EV_TS_CONST (0.);
time_update (EV_A_ EV_TSTAMP_HUGE);
*/
#if EV_PERIODIC_ENABLE
periodics_reschedule (EV_A);
#endif
}
ecb_noinline ecb_cold
static void
evtimerfd_init (EV_P)
{
if (!ev_is_active (&timerfd_w))
{
timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
if (timerfd >= 0)
{
fd_intern (timerfd); /* just to be sure */
ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
ev_set_priority (&timerfd_w, EV_MINPRI);
ev_io_start (EV_A_ &timerfd_w);
ev_unref (EV_A); /* watcher should not keep loop alive */
/* (re-) arm timer */
timerfdcb (EV_A_ 0, 0);
}
}
}
#endif
/*****************************************************************************/
#if EV_USE_IOCP
# include "ev_iocp.c"
#endif
#if EV_USE_PORT
# include "ev_port.c"
#endif
#if EV_USE_KQUEUE
# include "ev_kqueue.c"
#endif
#if EV_USE_EPOLL
# include "ev_epoll.c"
#endif
#if EV_USE_LINUXAIO
# include "ev_linuxaio.c"
#endif
#if EV_USE_IOURING
# include "ev_iouring.c"
#endif
#if EV_USE_POLL
# include "ev_poll.c"
#endif
#if EV_USE_SELECT
# include "ev_select.c"
#endif
ecb_cold int
ev_version_major (void) EV_NOEXCEPT
{
return EV_VERSION_MAJOR;
}
ecb_cold int
ev_version_minor (void) EV_NOEXCEPT
{
return EV_VERSION_MINOR;
}
/* return true if we are running with elevated privileges and should ignore env variables */
inline_size ecb_cold int
enable_secure (void)
{
#ifdef _WIN32
return 0;
#else
return getuid () != geteuid ()
|| getgid () != getegid ();
#endif
}
ecb_cold
unsigned int
ev_supported_backends (void) EV_NOEXCEPT
{
unsigned int flags = 0;
if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
return flags;
}
ecb_cold
unsigned int
ev_recommended_backends (void) EV_NOEXCEPT
{
unsigned int flags = ev_supported_backends ();
#ifndef __NetBSD__
/* kqueue is borked on everything but netbsd apparently */
/* it usually doesn't work correctly on anything but sockets and pipes */
flags &= ~EVBACKEND_KQUEUE;
#endif
#ifdef __APPLE__
/* only select works correctly on that "unix-certified" platform */
flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
#endif
#ifdef __FreeBSD__
flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
#endif
/* TODO: linuxaio is very experimental */
#if !EV_RECOMMEND_LINUXAIO
flags &= ~EVBACKEND_LINUXAIO;
#endif
/* TODO: linuxaio is super experimental */
#if !EV_RECOMMEND_IOURING
flags &= ~EVBACKEND_IOURING;
#endif
return flags;
}
ecb_cold
unsigned int
ev_embeddable_backends (void) EV_NOEXCEPT
{
int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
flags &= ~EVBACKEND_EPOLL;
/* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
return flags;
}
unsigned int
ev_backend (EV_P) EV_NOEXCEPT
{
return backend;
}
#if EV_FEATURE_API
unsigned int
ev_iteration (EV_P) EV_NOEXCEPT
{
return loop_count;
}
unsigned int
ev_depth (EV_P) EV_NOEXCEPT
{
return loop_depth;
}
void
ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
{
io_blocktime = interval;
}
void
ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
{
timeout_blocktime = interval;
}
void
ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
{
userdata = data;
}
void *
ev_userdata (EV_P) EV_NOEXCEPT
{
return userdata;
}
void
ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
{
invoke_cb = invoke_pending_cb;
}
void
ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
{
release_cb = release;
acquire_cb = acquire;
}
#endif
/* initialise a loop structure, must be zero-initialised */
ecb_noinline ecb_cold
static void
loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
{
if (!backend)
{
origflags = flags;
#if EV_USE_REALTIME
if (!have_realtime)
{
struct timespec ts;
if (!clock_gettime (CLOCK_REALTIME, &ts))
have_realtime = 1;
}
#endif
#if EV_USE_MONOTONIC
if (!have_monotonic)
{
struct timespec ts;
if (!clock_gettime (CLOCK_MONOTONIC, &ts))
have_monotonic = 1;
}
#endif
/* pid check not overridable via env */
#ifndef _WIN32
if (flags & EVFLAG_FORKCHECK)
curpid = getpid ();
#endif
if (!(flags & EVFLAG_NOENV)
&& !enable_secure ()
&& getenv ("LIBEV_FLAGS"))
flags = atoi (getenv ("LIBEV_FLAGS"));
ev_rt_now = ev_time ();
mn_now = get_clock ();
now_floor = mn_now;
rtmn_diff = ev_rt_now - mn_now;
#if EV_FEATURE_API
invoke_cb = ev_invoke_pending;
#endif
io_blocktime = 0.;
timeout_blocktime = 0.;
backend = 0;
backend_fd = -1;
sig_pending = 0;
#if EV_ASYNC_ENABLE
async_pending = 0;
#endif
pipe_write_skipped = 0;
pipe_write_wanted = 0;
evpipe [0] = -1;
evpipe [1] = -1;
#if EV_USE_INOTIFY
fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
#endif
#if EV_USE_SIGNALFD
sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
#endif
#if EV_USE_TIMERFD
timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
#endif
if (!(flags & EVBACKEND_MASK))
flags |= ev_recommended_backends ();
#if EV_USE_IOCP
if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
#endif
#if EV_USE_PORT
if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
#endif
#if EV_USE_KQUEUE
if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
#endif
#if EV_USE_IOURING
if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
#endif
#if EV_USE_LINUXAIO
if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
#endif
#if EV_USE_EPOLL
if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
#endif
#if EV_USE_POLL
if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
#endif
#if EV_USE_SELECT
if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
#endif
ev_prepare_init (&pending_w, pendingcb);
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
ev_init (&pipe_w, pipecb);
ev_set_priority (&pipe_w, EV_MAXPRI);
#endif
}
}
/* free up a loop structure */
ecb_cold
void
ev_loop_destroy (EV_P)
{
int i;
#if EV_MULTIPLICITY
/* mimic free (0) */
if (!EV_A)
return;
#endif
#if EV_CLEANUP_ENABLE
/* queue cleanup watchers (and execute them) */
if (ecb_expect_false (cleanupcnt))
{
queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
EV_INVOKE_PENDING;
}
#endif
#if EV_CHILD_ENABLE
if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
{
ev_ref (EV_A); /* child watcher */
ev_signal_stop (EV_A_ &childev);
}
#endif
if (ev_is_active (&pipe_w))
{
/*ev_ref (EV_A);*/
/*ev_io_stop (EV_A_ &pipe_w);*/
if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
}
#if EV_USE_SIGNALFD
if (ev_is_active (&sigfd_w))
close (sigfd);
#endif
#if EV_USE_TIMERFD
if (ev_is_active (&timerfd_w))
close (timerfd);
#endif
#if EV_USE_INOTIFY
if (fs_fd >= 0)
close (fs_fd);
#endif
if (backend_fd >= 0)
close (backend_fd);
#if EV_USE_IOCP
if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
#endif
#if EV_USE_PORT
if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
#endif
#if EV_USE_KQUEUE
if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
#endif
#if EV_USE_IOURING
if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
#endif
#if EV_USE_LINUXAIO
if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
#endif
#if EV_USE_EPOLL
if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
#endif
#if EV_USE_POLL
if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
#endif
#if EV_USE_SELECT
if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
#endif
for (i = NUMPRI; i--; )
{
array_free (pending, [i]);
#if EV_IDLE_ENABLE
array_free (idle, [i]);
#endif
}
ev_free (anfds); anfds = 0; anfdmax = 0;
/* have to use the microsoft-never-gets-it-right macro */
array_free (rfeed, EMPTY);
array_free (fdchange, EMPTY);
array_free (timer, EMPTY);
#if EV_PERIODIC_ENABLE
array_free (periodic, EMPTY);
#endif
#if EV_FORK_ENABLE
array_free (fork, EMPTY);
#endif
#if EV_CLEANUP_ENABLE
array_free (cleanup, EMPTY);
#endif
array_free (prepare, EMPTY);
array_free (check, EMPTY);
#if EV_ASYNC_ENABLE
array_free (async, EMPTY);
#endif
backend = 0;
#if EV_MULTIPLICITY
if (ev_is_default_loop (EV_A))
#endif
ev_default_loop_ptr = 0;
#if EV_MULTIPLICITY
else
ev_free (EV_A);
#endif
}
#if EV_USE_INOTIFY
inline_size void infy_fork (EV_P);
#endif
inline_size void
loop_fork (EV_P)
{
#if EV_USE_PORT
if (backend == EVBACKEND_PORT ) port_fork (EV_A);
#endif
#if EV_USE_KQUEUE
if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
#endif
#if EV_USE_IOURING
if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
#endif
#if EV_USE_LINUXAIO
if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
#endif
#if EV_USE_EPOLL
if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
#endif
#if EV_USE_INOTIFY
infy_fork (EV_A);
#endif
if (postfork != 2)
{
#if EV_USE_SIGNALFD
/* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
#endif
#if EV_USE_TIMERFD
if (ev_is_active (&timerfd_w))
{
ev_ref (EV_A);
ev_io_stop (EV_A_ &timerfd_w);
close (timerfd);
timerfd = -2;
evtimerfd_init (EV_A);
/* reschedule periodics, in case we missed something */
ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
}
#endif
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
if (ev_is_active (&pipe_w))
{
/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
ev_ref (EV_A);
ev_io_stop (EV_A_ &pipe_w);
if (evpipe [0] >= 0)
EV_WIN32_CLOSE_FD (evpipe [0]);
evpipe_init (EV_A);
/* iterate over everything, in case we missed something before */
ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
}
#endif
}
postfork = 0;
}
#if EV_MULTIPLICITY
ecb_cold
struct ev_loop *
ev_loop_new (unsigned int flags) EV_NOEXCEPT
{
EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
memset (EV_A, 0, sizeof (struct ev_loop));
loop_init (EV_A_ flags);
if (ev_backend (EV_A))
return EV_A;
ev_free (EV_A);
return 0;
}
#endif /* multiplicity */
#if EV_VERIFY
ecb_noinline ecb_cold
static void
verify_watcher (EV_P_ W w)
{
assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
if (w->pending)
assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
}
ecb_noinline ecb_cold
static void
verify_heap (EV_P_ ANHE *heap, int N)
{
int i;
for (i = HEAP0; i < N + HEAP0; ++i)
{
assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
}
}
ecb_noinline ecb_cold
static void
array_verify (EV_P_ W *ws, int cnt)
{
while (cnt--)
{
assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
verify_watcher (EV_A_ ws [cnt]);
}
}
#endif
#if EV_FEATURE_API
void ecb_cold
ev_verify (EV_P) EV_NOEXCEPT
{
#if EV_VERIFY
int i;
WL w, w2;
assert (activecnt >= -1);
assert (fdchangemax >= fdchangecnt);
for (i = 0; i < fdchangecnt; ++i)
assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
assert (anfdmax >= 0);
for (i = 0; i < anfdmax; ++i)
{
int j = 0;
for (w = w2 = anfds [i].head; w; w = w->next)
{
verify_watcher (EV_A_ (W)w);
if (j++ & 1)
{
assert (("libev: io watcher list contains a loop", w != w2));
w2 = w2->next;
}
assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
}
}
assert (timermax >= timercnt);
verify_heap (EV_A_ timers, timercnt);
#if EV_PERIODIC_ENABLE
assert (periodicmax >= periodiccnt);
verify_heap (EV_A_ periodics, periodiccnt);
#endif
for (i = NUMPRI; i--; )
{
assert (pendingmax [i] >= pendingcnt [i]);
#if EV_IDLE_ENABLE
assert (idleall >= 0);
assert (idlemax [i] >= idlecnt [i]);
array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
#endif
}
#if EV_FORK_ENABLE
assert (forkmax >= forkcnt);
array_verify (EV_A_ (W *)forks, forkcnt);
#endif
#if EV_CLEANUP_ENABLE
assert (cleanupmax >= cleanupcnt);
array_verify (EV_A_ (W *)cleanups, cleanupcnt);
#endif
#if EV_ASYNC_ENABLE
assert (asyncmax >= asynccnt);
array_verify (EV_A_ (W *)asyncs, asynccnt);
#endif
#if EV_PREPARE_ENABLE
assert (preparemax >= preparecnt);
array_verify (EV_A_ (W *)prepares, preparecnt);
#endif
#if EV_CHECK_ENABLE
assert (checkmax >= checkcnt);
array_verify (EV_A_ (W *)checks, checkcnt);
#endif
# if 0
#if EV_CHILD_ENABLE
for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
#endif
# endif
#endif
}
#endif
#if EV_MULTIPLICITY
ecb_cold
struct ev_loop *
#else
int
#endif
ev_default_loop (unsigned int flags) EV_NOEXCEPT
{
if (!ev_default_loop_ptr)
{
#if EV_MULTIPLICITY
EV_P = ev_default_loop_ptr = &default_loop_struct;
#else
ev_default_loop_ptr = 1;
#endif
loop_init (EV_A_ flags);
if (ev_backend (EV_A))
{
#if EV_CHILD_ENABLE
ev_signal_init (&childev, childcb, SIGCHLD);
ev_set_priority (&childev, EV_MAXPRI);
ev_signal_start (EV_A_ &childev);
ev_unref (EV_A); /* child watcher should not keep loop alive */
#endif
}
else
ev_default_loop_ptr = 0;
}
return ev_default_loop_ptr;
}
void
ev_loop_fork (EV_P) EV_NOEXCEPT
{
postfork = 1;
}
/*****************************************************************************/
void
ev_invoke (EV_P_ void *w, int revents)
{
EV_CB_INVOKE ((W)w, revents);
}
unsigned int
ev_pending_count (EV_P) EV_NOEXCEPT
{
int pri;
unsigned int count = 0;
for (pri = NUMPRI; pri--; )
count += pendingcnt [pri];
return count;
}
ecb_noinline
void
ev_invoke_pending (EV_P)
{
pendingpri = NUMPRI;
do
{
--pendingpri;
/* pendingpri possibly gets modified in the inner loop */
while (pendingcnt [pendingpri])
{
ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
p->w->pending = 0;
EV_CB_INVOKE (p->w, p->events);
EV_FREQUENT_CHECK;
}
}
while (pendingpri);
}
#if EV_IDLE_ENABLE
/* make idle watchers pending. this handles the "call-idle */
/* only when higher priorities are idle" logic */
inline_size void
idle_reify (EV_P)
{
if (ecb_expect_false (idleall))
{
int pri;
for (pri = NUMPRI; pri--; )
{
if (pendingcnt [pri])
break;
if (idlecnt [pri])
{
queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
break;
}
}
}
}
#endif
/* make timers pending */
inline_size void
timers_reify (EV_P)
{
EV_FREQUENT_CHECK;
if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
{
do
{
ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
/* first reschedule or stop timer */
if (w->repeat)
{
ev_at (w) += w->repeat;
if (ev_at (w) < mn_now)
ev_at (w) = mn_now;
assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
ANHE_at_cache (timers [HEAP0]);
downheap (timers, timercnt, HEAP0);
}
else
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
EV_FREQUENT_CHECK;
feed_reverse (EV_A_ (W)w);
}
while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
feed_reverse_done (EV_A_ EV_TIMER);
}
}
#if EV_PERIODIC_ENABLE
ecb_noinline
static void
periodic_recalc (EV_P_ ev_periodic *w)
{
ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
/* the above almost always errs on the low side */
while (at <= ev_rt_now)
{
ev_tstamp nat = at + w->interval;
/* when resolution fails us, we use ev_rt_now */
if (ecb_expect_false (nat == at))
{
at = ev_rt_now;
break;
}
at = nat;
}
ev_at (w) = at;
}
/* make periodics pending */
inline_size void
periodics_reify (EV_P)
{
EV_FREQUENT_CHECK;
while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
{
do
{
ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
/* first reschedule or stop timer */
if (w->reschedule_cb)
{
ev_at (w) = w->reschedule_cb (w, ev_rt_now);
assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
ANHE_at_cache (periodics [HEAP0]);
downheap (periodics, periodiccnt, HEAP0);
}
else if (w->interval)
{
periodic_recalc (EV_A_ w);
ANHE_at_cache (periodics [HEAP0]);
downheap (periodics, periodiccnt, HEAP0);
}
else
ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
EV_FREQUENT_CHECK;
feed_reverse (EV_A_ (W)w);
}
while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
feed_reverse_done (EV_A_ EV_PERIODIC);
}
}
/* simply recalculate all periodics */
/* TODO: maybe ensure that at least one event happens when jumping forward? */
ecb_noinline ecb_cold
static void
periodics_reschedule (EV_P)
{
int i;
/* adjust periodics after time jump */
for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
{
ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
if (w->reschedule_cb)
ev_at (w) = w->reschedule_cb (w, ev_rt_now);
else if (w->interval)
periodic_recalc (EV_A_ w);
ANHE_at_cache (periodics [i]);
}
reheap (periodics, periodiccnt);
}
#endif
/* adjust all timers by a given offset */
ecb_noinline ecb_cold
static void
timers_reschedule (EV_P_ ev_tstamp adjust)
{
int i;
for (i = 0; i < timercnt; ++i)
{
ANHE *he = timers + i + HEAP0;
ANHE_w (*he)->at += adjust;
ANHE_at_cache (*he);
}
}
/* fetch new monotonic and realtime times from the kernel */
/* also detect if there was a timejump, and act accordingly */
inline_speed void
time_update (EV_P_ ev_tstamp max_block)
{
#if EV_USE_MONOTONIC
if (ecb_expect_true (have_monotonic))
{
int i;
ev_tstamp odiff = rtmn_diff;
mn_now = get_clock ();
/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
/* interpolate in the meantime */
if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
{
ev_rt_now = rtmn_diff + mn_now;
return;
}
now_floor = mn_now;
ev_rt_now = ev_time ();
/* loop a few times, before making important decisions.
* on the choice of "4": one iteration isn't enough,
* in case we get preempted during the calls to
* ev_time and get_clock. a second call is almost guaranteed
* to succeed in that case, though. and looping a few more times
* doesn't hurt either as we only do this on time-jumps or
* in the unlikely event of having been preempted here.
*/
for (i = 4; --i; )
{
ev_tstamp diff;
rtmn_diff = ev_rt_now - mn_now;
diff = odiff - rtmn_diff;
if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
return; /* all is well */
ev_rt_now = ev_time ();
mn_now = get_clock ();
now_floor = mn_now;
}
/* no timer adjustment, as the monotonic clock doesn't jump */
/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
# if EV_PERIODIC_ENABLE
periodics_reschedule (EV_A);
# endif
}
else
#endif
{
ev_rt_now = ev_time ();
if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
{
/* adjust timers. this is easy, as the offset is the same for all of them */
timers_reschedule (EV_A_ ev_rt_now - mn_now);
#if EV_PERIODIC_ENABLE
periodics_reschedule (EV_A);
#endif
}
mn_now = ev_rt_now;
}
}
int
ev_run (EV_P_ int flags)
{
#if EV_FEATURE_API
++loop_depth;
#endif
assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
loop_done = EVBREAK_CANCEL;
EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
do
{
#if EV_VERIFY >= 2
ev_verify (EV_A);
#endif
#ifndef _WIN32
if (ecb_expect_false (curpid)) /* penalise the forking check even more */
if (ecb_expect_false (getpid () != curpid))
{
curpid = getpid ();
postfork = 1;
}
#endif
#if EV_FORK_ENABLE
/* we might have forked, so queue fork handlers */
if (ecb_expect_false (postfork))
if (forkcnt)
{
queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
EV_INVOKE_PENDING;
}
#endif
#if EV_PREPARE_ENABLE
/* queue prepare watchers (and execute them) */
if (ecb_expect_false (preparecnt))
{
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
EV_INVOKE_PENDING;
}
#endif
if (ecb_expect_false (loop_done))
break;
/* we might have forked, so reify kernel state if necessary */
if (ecb_expect_false (postfork))
loop_fork (EV_A);
/* update fd-related kernel structures */
fd_reify (EV_A);
/* calculate blocking time */
{
ev_tstamp waittime = 0.;
ev_tstamp sleeptime = 0.;
/* remember old timestamp for io_blocktime calculation */
ev_tstamp prev_mn_now = mn_now;
/* update time to cancel out callback processing overhead */
time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
/* from now on, we want a pipe-wake-up */
pipe_write_wanted = 1;
ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
{
waittime = EV_TS_CONST (MAX_BLOCKTIME);
#if EV_USE_TIMERFD
/* sleep a lot longer when we can reliably detect timejumps */
if (ecb_expect_true (timerfd >= 0))
waittime = EV_TS_CONST (MAX_BLOCKTIME2);
#endif
#if !EV_PERIODIC_ENABLE && EV_USE_MONOTONIC
/* without periodics but with monotonic clock there is no need */
/* for any time jump detection, so sleep longer */
if (ecb_expect_true (have_monotonic))
waittime = EV_TS_CONST (MAX_BLOCKTIME2);
#endif
if (timercnt)
{
ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
if (waittime > to) waittime = to;
}
#if EV_PERIODIC_ENABLE
if (periodiccnt)
{
ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
if (waittime > to) waittime = to;
}
#endif
/* don't let timeouts decrease the waittime below timeout_blocktime */
if (ecb_expect_false (waittime < timeout_blocktime))
waittime = timeout_blocktime;
/* now there are two more special cases left, either we have
* already-expired timers, so we should not sleep, or we have timers
* that expire very soon, in which case we need to wait for a minimum
* amount of time for some event loop backends.
*/
if (ecb_expect_false (waittime < backend_mintime))
waittime = waittime <= EV_TS_CONST (0.)
? EV_TS_CONST (0.)
: backend_mintime;
/* extra check because io_blocktime is commonly 0 */
if (ecb_expect_false (io_blocktime))
{
sleeptime = io_blocktime - (mn_now - prev_mn_now);
if (sleeptime > waittime - backend_mintime)
sleeptime = waittime - backend_mintime;
if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
{
ev_sleep (sleeptime);
waittime -= sleeptime;
}
}
}
#if EV_FEATURE_API
++loop_count;
#endif
assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
backend_poll (EV_A_ waittime);
assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
pipe_write_wanted = 0; /* just an optimisation, no fence needed */
ECB_MEMORY_FENCE_ACQUIRE;
if (pipe_write_skipped)
{
assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
}
/* update ev_rt_now, do magic */
time_update (EV_A_ waittime + sleeptime);
}
/* queue pending timers and reschedule them */
timers_reify (EV_A); /* relative timers called last */
#if EV_PERIODIC_ENABLE
periodics_reify (EV_A); /* absolute timers called first */
#endif
#if EV_IDLE_ENABLE
/* queue idle watchers unless other events are pending */
idle_reify (EV_A);
#endif
#if EV_CHECK_ENABLE
/* queue check watchers, to be executed first */
if (ecb_expect_false (checkcnt))
queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
#endif
EV_INVOKE_PENDING;
}
while (ecb_expect_true (
activecnt
&& !loop_done
&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
));
if (loop_done == EVBREAK_ONE)
loop_done = EVBREAK_CANCEL;
#if EV_FEATURE_API
--loop_depth;
#endif
return activecnt;
}
void
ev_break (EV_P_ int how) EV_NOEXCEPT
{
loop_done = how;
}
void
ev_ref (EV_P) EV_NOEXCEPT
{
++activecnt;
}
void
ev_unref (EV_P) EV_NOEXCEPT
{
--activecnt;
}
void
ev_now_update (EV_P) EV_NOEXCEPT
{
time_update (EV_A_ EV_TSTAMP_HUGE);
}
void
ev_suspend (EV_P) EV_NOEXCEPT
{
ev_now_update (EV_A);
}
void
ev_resume (EV_P) EV_NOEXCEPT
{
ev_tstamp mn_prev = mn_now;
ev_now_update (EV_A);
timers_reschedule (EV_A_ mn_now - mn_prev);
#if EV_PERIODIC_ENABLE
/* TODO: really do this? */
periodics_reschedule (EV_A);
#endif
}
/*****************************************************************************/
/* singly-linked list management, used when the expected list length is short */
inline_size void
wlist_add (WL *head, WL elem)
{
elem->next = *head;
*head = elem;
}
inline_size void
wlist_del (WL *head, WL elem)
{
while (*head)
{
if (ecb_expect_true (*head == elem))
{
*head = elem->next;
break;
}
head = &(*head)->next;
}
}
/* internal, faster, version of ev_clear_pending */
inline_speed void
clear_pending (EV_P_ W w)
{
if (w->pending)
{
pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
w->pending = 0;
}
}
int
ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
{
W w_ = (W)w;
int pending = w_->pending;
if (ecb_expect_true (pending))
{
ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
p->w = (W)&pending_w;
w_->pending = 0;
return p->events;
}
else
return 0;
}
inline_size void
pri_adjust (EV_P_ W w)
{
int pri = ev_priority (w);
pri = pri < EV_MINPRI ? EV_MINPRI : pri;
pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
ev_set_priority (w, pri);
}
inline_speed void
ev_start (EV_P_ W w, int active)
{
pri_adjust (EV_A_ w);
w->active = active;
ev_ref (EV_A);
}
inline_size void
ev_stop (EV_P_ W w)
{
ev_unref (EV_A);
w->active = 0;
}
/*****************************************************************************/
ecb_noinline
void
ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
{
int fd = w->fd;
if (ecb_expect_false (ev_is_active (w)))
return;
assert (("libev: ev_io_start called with negative fd", fd >= 0));
assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE | EV_CUSTOM))));
#if EV_VERIFY >= 2
assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
#endif
EV_FREQUENT_CHECK;
ev_start (EV_A_ (W)w, 1);
array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
wlist_add (&anfds[fd].head, (WL)w);
/* common bug, apparently */
assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
fd_change (EV_A_ fd, (w->events & EV__IOFDSET) | EV_ANFD_REIFY);
w->events &= ~EV__IOFDSET;
EV_FREQUENT_CHECK;
}
ecb_noinline
void
ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
#if EV_VERIFY >= 2
assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
#endif
EV_FREQUENT_CHECK;
wlist_del (&anfds[w->fd].head, (WL)w);
ev_stop (EV_A_ (W)w);
fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
EV_FREQUENT_CHECK;
}
ecb_noinline
void
ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
{
if (ecb_expect_false (ev_is_active (w)))
return;
ev_at (w) += mn_now;
assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
EV_FREQUENT_CHECK;
++timercnt;
ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
ANHE_w (timers [ev_active (w)]) = (WT)w;
ANHE_at_cache (timers [ev_active (w)]);
upheap (timers, ev_active (w));
EV_FREQUENT_CHECK;
/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
}
ecb_noinline
void
ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
{
int active = ev_active (w);
assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
--timercnt;
if (ecb_expect_true (active < timercnt + HEAP0))
{
timers [active] = timers [timercnt + HEAP0];
adjustheap (timers, timercnt, active);
}
}
ev_at (w) -= mn_now;
ev_stop (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
ecb_noinline
void
ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
{
EV_FREQUENT_CHECK;
clear_pending (EV_A_ (W)w);
if (ev_is_active (w))
{
if (w->repeat)
{
ev_at (w) = mn_now + w->repeat;
ANHE_at_cache (timers [ev_active (w)]);
adjustheap (timers, timercnt, ev_active (w));
}
else
ev_timer_stop (EV_A_ w);
}
else if (w->repeat)
{
ev_at (w) = w->repeat;
ev_timer_start (EV_A_ w);
}
EV_FREQUENT_CHECK;
}
ev_tstamp
ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
{
return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
}
#if EV_PERIODIC_ENABLE
ecb_noinline
void
ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
{
if (ecb_expect_false (ev_is_active (w)))
return;
#if EV_USE_TIMERFD
if (timerfd == -2)
evtimerfd_init (EV_A);
#endif
if (w->reschedule_cb)
ev_at (w) = w->reschedule_cb (w, ev_rt_now);
else if (w->interval)
{
assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
periodic_recalc (EV_A_ w);
}
else
ev_at (w) = w->offset;
EV_FREQUENT_CHECK;
++periodiccnt;
ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
ANHE_w (periodics [ev_active (w)]) = (WT)w;
ANHE_at_cache (periodics [ev_active (w)]);
upheap (periodics, ev_active (w));
EV_FREQUENT_CHECK;
/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
}
ecb_noinline
void
ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
{
int active = ev_active (w);
assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
--periodiccnt;
if (ecb_expect_true (active < periodiccnt + HEAP0))
{
periodics [active] = periodics [periodiccnt + HEAP0];
adjustheap (periodics, periodiccnt, active);
}
}
ev_stop (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
ecb_noinline
void
ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
{
/* TODO: use adjustheap and recalculation */
ev_periodic_stop (EV_A_ w);
ev_periodic_start (EV_A_ w);
}
#endif
#ifndef SA_RESTART
# define SA_RESTART 0
#endif
#if EV_SIGNAL_ENABLE
ecb_noinline
void
ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
{
if (ecb_expect_false (ev_is_active (w)))
return;
assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
#if EV_MULTIPLICITY
assert (("libev: a signal must not be attached to two different loops",
!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
signals [w->signum - 1].loop = EV_A;
ECB_MEMORY_FENCE_RELEASE;
#endif
EV_FREQUENT_CHECK;
#if EV_USE_SIGNALFD
if (sigfd == -2)
{
sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
if (sigfd < 0 && errno == EINVAL)
sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
if (sigfd >= 0)
{
fd_intern (sigfd); /* doing it twice will not hurt */
sigemptyset (&sigfd_set);
ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
ev_set_priority (&sigfd_w, EV_MAXPRI);
ev_io_start (EV_A_ &sigfd_w);
ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
}
}
if (sigfd >= 0)
{
/* TODO: check .head */
sigaddset (&sigfd_set, w->signum);
sigprocmask (SIG_BLOCK, &sigfd_set, 0);
signalfd (sigfd, &sigfd_set, 0);
}
#endif
ev_start (EV_A_ (W)w, 1);
wlist_add (&signals [w->signum - 1].head, (WL)w);
if (!((WL)w)->next)
# if EV_USE_SIGNALFD
if (sigfd < 0) /*TODO*/
# endif
{
# ifdef _WIN32
evpipe_init (EV_A);
signal (w->signum, ev_sighandler);
# else
struct sigaction sa;
evpipe_init (EV_A);
sa.sa_handler = ev_sighandler;
sigfillset (&sa.sa_mask);
sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
sigaction (w->signum, &sa, 0);
if (origflags & EVFLAG_NOSIGMASK)
{
sigemptyset (&sa.sa_mask);
sigaddset (&sa.sa_mask, w->signum);
sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
}
#endif
}
EV_FREQUENT_CHECK;
}
ecb_noinline
void
ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
wlist_del (&signals [w->signum - 1].head, (WL)w);
ev_stop (EV_A_ (W)w);
if (!signals [w->signum - 1].head)
{
#if EV_MULTIPLICITY
signals [w->signum - 1].loop = 0; /* unattach from signal */
#endif
#if EV_USE_SIGNALFD
if (sigfd >= 0)
{
sigset_t ss;
sigemptyset (&ss);
sigaddset (&ss, w->signum);
sigdelset (&sigfd_set, w->signum);
signalfd (sigfd, &sigfd_set, 0);
sigprocmask (SIG_UNBLOCK, &ss, 0);
}
else
#endif
signal (w->signum, SIG_DFL);
}
EV_FREQUENT_CHECK;
}
#endif
#if EV_CHILD_ENABLE
void
ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
{
#if EV_MULTIPLICITY
assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
#endif
if (ecb_expect_false (ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
ev_start (EV_A_ (W)w, 1);
wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
EV_FREQUENT_CHECK;
}
void
ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
ev_stop (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
#endif
#if EV_STAT_ENABLE
# ifdef _WIN32
# undef lstat
# define lstat(a,b) _stati64 (a,b)
# endif
#define DEF_STAT_INTERVAL 5.0074891
#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
#define MIN_STAT_INTERVAL 0.1074891
ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
#if EV_USE_INOTIFY
/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
ecb_noinline
static void
infy_add (EV_P_ ev_stat *w)
{
w->wd = inotify_add_watch (fs_fd, w->path,
IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
| IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
| IN_DONT_FOLLOW | IN_MASK_ADD);
if (w->wd >= 0)
{
struct statfs sfs;
/* now local changes will be tracked by inotify, but remote changes won't */
/* unless the filesystem is known to be local, we therefore still poll */
/* also do poll on <2.6.25, but with normal frequency */
if (!fs_2625)
w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
else if (!statfs (w->path, &sfs)
&& (sfs.f_type == 0x1373 /* devfs */
|| sfs.f_type == 0x4006 /* fat */
|| sfs.f_type == 0x4d44 /* msdos */
|| sfs.f_type == 0xEF53 /* ext2/3 */
|| sfs.f_type == 0x72b6 /* jffs2 */
|| sfs.f_type == 0x858458f6 /* ramfs */
|| sfs.f_type == 0x5346544e /* ntfs */
|| sfs.f_type == 0x3153464a /* jfs */
|| sfs.f_type == 0x9123683e /* btrfs */
|| sfs.f_type == 0x52654973 /* reiser3 */
|| sfs.f_type == 0x01021994 /* tmpfs */
|| sfs.f_type == 0x58465342 /* xfs */))
w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
else
w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
}
else
{
/* can't use inotify, continue to stat */
w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
/* if path is not there, monitor some parent directory for speedup hints */
/* note that exceeding the hardcoded path limit is not a correctness issue, */
/* but an efficiency issue only */
if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
{
char path [4096];
strcpy (path, w->path);
do
{
int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
char *pend = strrchr (path, '/');
if (!pend || pend == path)
break;
*pend = 0;
w->wd = inotify_add_watch (fs_fd, path, mask);
}
while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
}
}
if (w->wd >= 0)
wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
/* now re-arm timer, if required */
if (ev_is_active (&w->timer)) ev_ref (EV_A);
ev_timer_again (EV_A_ &w->timer);
if (ev_is_active (&w->timer)) ev_unref (EV_A);
}
ecb_noinline
static void
infy_del (EV_P_ ev_stat *w)
{
int slot;
int wd = w->wd;
if (wd < 0)
return;
w->wd = -2;
slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
wlist_del (&fs_hash [slot].head, (WL)w);
/* remove this watcher, if others are watching it, they will rearm */
inotify_rm_watch (fs_fd, wd);
}
ecb_noinline
static void
infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
{
if (slot < 0)
/* overflow, need to check for all hash slots */
for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
infy_wd (EV_A_ slot, wd, ev);
else
{
WL w_;
for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
{
ev_stat *w = (ev_stat *)w_;
w_ = w_->next; /* lets us remove this watcher and all before it */
if (w->wd == wd || wd == -1)
{
if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
{
wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
w->wd = -1;
infy_add (EV_A_ w); /* re-add, no matter what */
}
stat_timer_cb (EV_A_ &w->timer, 0);
}
}
}
}
static void
infy_cb (EV_P_ ev_io *w, int revents)
{
char buf [EV_INOTIFY_BUFSIZE];
int ofs;
int len = read (fs_fd, buf, sizeof (buf));
for (ofs = 0; ofs < len; )
{
struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
infy_wd (EV_A_ ev->wd, ev->wd, ev);
ofs += sizeof (struct inotify_event) + ev->len;
}
}
inline_size ecb_cold
void
ev_check_2625 (EV_P)
{
/* kernels < 2.6.25 are borked
* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
*/
if (ev_linux_version () < 0x020619)
return;
fs_2625 = 1;
}
inline_size int
infy_newfd (void)
{
#if defined IN_CLOEXEC && defined IN_NONBLOCK
int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
if (fd >= 0)
return fd;
#endif
return inotify_init ();
}
inline_size void
infy_init (EV_P)
{
if (fs_fd != -2)
return;
fs_fd = -1;
ev_check_2625 (EV_A);
fs_fd = infy_newfd ();
if (fs_fd >= 0)
{
fd_intern (fs_fd);
ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
ev_set_priority (&fs_w, EV_MAXPRI);
ev_io_start (EV_A_ &fs_w);
ev_unref (EV_A);
}
}
inline_size void
infy_fork (EV_P)
{
int slot;
if (fs_fd < 0)
return;
ev_ref (EV_A);
ev_io_stop (EV_A_ &fs_w);
close (fs_fd);
fs_fd = infy_newfd ();
if (fs_fd >= 0)
{
fd_intern (fs_fd);
ev_io_set (&fs_w, fs_fd, EV_READ);
ev_io_start (EV_A_ &fs_w);
ev_unref (EV_A);
}
for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
{
WL w_ = fs_hash [slot].head;
fs_hash [slot].head = 0;
while (w_)
{
ev_stat *w = (ev_stat *)w_;
w_ = w_->next; /* lets us add this watcher */
w->wd = -1;
if (fs_fd >= 0)
infy_add (EV_A_ w); /* re-add, no matter what */
else
{
w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
if (ev_is_active (&w->timer)) ev_ref (EV_A);
ev_timer_again (EV_A_ &w->timer);
if (ev_is_active (&w->timer)) ev_unref (EV_A);
}
}
}
}
#endif
#ifdef _WIN32
# define EV_LSTAT(p,b) _stati64 (p, b)
#else
# define EV_LSTAT(p,b) lstat (p, b)
#endif
void
ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
{
if (lstat (w->path, &w->attr) < 0)
w->attr.st_nlink = 0;
else if (!w->attr.st_nlink)
w->attr.st_nlink = 1;
}
ecb_noinline
static void
stat_timer_cb (EV_P_ ev_timer *w_, int revents)
{
ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
ev_statdata prev = w->attr;
ev_stat_stat (EV_A_ w);
/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
if (
prev.st_dev != w->attr.st_dev
|| prev.st_ino != w->attr.st_ino
|| prev.st_mode != w->attr.st_mode
|| prev.st_nlink != w->attr.st_nlink
|| prev.st_uid != w->attr.st_uid
|| prev.st_gid != w->attr.st_gid
|| prev.st_rdev != w->attr.st_rdev
|| prev.st_size != w->attr.st_size
|| prev.st_atime != w->attr.st_atime
|| prev.st_mtime != w->attr.st_mtime
|| prev.st_ctime != w->attr.st_ctime
) {
/* we only update w->prev on actual differences */
/* in case we test more often than invoke the callback, */
/* to ensure that prev is always different to attr */
w->prev = prev;
#if EV_USE_INOTIFY
if (fs_fd >= 0)
{
infy_del (EV_A_ w);
infy_add (EV_A_ w);
ev_stat_stat (EV_A_ w); /* avoid race... */
}
#endif
ev_feed_event (EV_A_ w, EV_STAT);
}
}
void
ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
{
if (ecb_expect_false (ev_is_active (w)))
return;
ev_stat_stat (EV_A_ w);
if (w->interval < MIN_STAT_INTERVAL && w->interval)
w->interval = MIN_STAT_INTERVAL;
ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
ev_set_priority (&w->timer, ev_priority (w));
#if EV_USE_INOTIFY
infy_init (EV_A);
if (fs_fd >= 0)
infy_add (EV_A_ w);
else
#endif
{
ev_timer_again (EV_A_ &w->timer);
ev_unref (EV_A);
}
ev_start (EV_A_ (W)w, 1);
EV_FREQUENT_CHECK;
}
void
ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
#if EV_USE_INOTIFY
infy_del (EV_A_ w);
#endif
if (ev_is_active (&w->timer))
{
ev_ref (EV_A);
ev_timer_stop (EV_A_ &w->timer);
}
ev_stop (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
#endif
#if EV_IDLE_ENABLE
void
ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
{
if (ecb_expect_false (ev_is_active (w)))
return;
pri_adjust (EV_A_ (W)w);
EV_FREQUENT_CHECK;
{
int active = ++idlecnt [ABSPRI (w)];
++idleall;
ev_start (EV_A_ (W)w, active);
array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
idles [ABSPRI (w)][active - 1] = w;
}
EV_FREQUENT_CHECK;
}
void
ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
{
int active = ev_active (w);
idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
ev_active (idles [ABSPRI (w)][active - 1]) = active;
ev_stop (EV_A_ (W)w);
--idleall;
}
EV_FREQUENT_CHECK;
}
#endif
#if EV_PREPARE_ENABLE
void
ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
{
if (ecb_expect_false (ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
ev_start (EV_A_ (W)w, ++preparecnt);
array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
prepares [preparecnt - 1] = w;
EV_FREQUENT_CHECK;
}
void
ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
{
int active = ev_active (w);
prepares [active - 1] = prepares [--preparecnt];
ev_active (prepares [active - 1]) = active;
}
ev_stop (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
#endif
#if EV_CHECK_ENABLE
void
ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
{
if (ecb_expect_false (ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
ev_start (EV_A_ (W)w, ++checkcnt);
array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
checks [checkcnt - 1] = w;
EV_FREQUENT_CHECK;
}
void
ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
{
clear_pending (EV_A_ (W)w);
if (ecb_expect_false (!ev_is_active (w)))
return;
EV_FREQUENT_CHECK;
gitextract_7c04hrd5/
├── .gitignore
├── LICENSE
├── Makefile
├── README.md
├── dns2tcp.c
└── libev/
├── config.h
├── ev.c
├── ev.h
├── ev_epoll.c
├── ev_vars.h
└── ev_wrap.h
SYMBOL INDEX (355 symbols across 6 files)
FILE: dns2tcp.c
type sockaddr (line 78) | struct sockaddr
type sockaddr_in (line 79) | struct sockaddr_in
type sockaddr_in6 (line 80) | struct sockaddr_in6
function skaddr_from_text (line 88) | static void skaddr_from_text(union skaddr *addr, int family, const char ...
function skaddr_to_text (line 100) | static void skaddr_to_text(const union skaddr *addr, char *ipstr, uint16...
function get_ipstr_family (line 111) | static int get_ipstr_family(const char *ipstr) {
type ctx_t (line 124) | typedef struct {
function print_help (line 169) | static void print_help(void) {
type addr_type (line 184) | enum addr_type {
function parse_addr (line 190) | static void parse_addr(const char *addr, enum addr_type addr_type) {
function parse_opt (line 253) | static void parse_opt(int argc, char *argv[]) {
function create_socket (line 347) | static int create_socket(int family, int type) {
function main (line 391) | int main(int argc, char *argv[]) {
function udp_recvmsg_cb (line 422) | static void udp_recvmsg_cb(evloop_t *evloop, evio_t *watcher __unused, i...
function free_ctx (line 468) | static void free_ctx(ctx_t *ctx, evloop_t *evloop) {
function tcp_connect_cb (line 474) | static void tcp_connect_cb(evloop_t *evloop, evio_t *watcher, int events...
function tcp_sendmsg_cb (line 489) | static void tcp_sendmsg_cb(evloop_t *evloop, evio_t *watcher, int events...
function tcp_recvmsg_cb (line 513) | static void tcp_recvmsg_cb(evloop_t *evloop, evio_t *watcher, int events...
FILE: libev/config.h
type evloop_t (line 52) | typedef struct ev_loop evloop_t;
type evio_t (line 53) | typedef struct ev_io evio_t;
type evtimer_t (line 54) | typedef struct ev_timer evtimer_t;
FILE: libev/ev.c
type signalfd_siginfo (line 553) | struct signalfd_siginfo
type int_fast8_t (line 660) | typedef signed char int_fast8_t;
type uint_fast8_t (line 661) | typedef unsigned char uint_fast8_t;
type int_fast16_t (line 664) | typedef signed int int_fast16_t;
type uint_fast16_t (line 665) | typedef unsigned int uint_fast16_t;
type int_fast32_t (line 668) | typedef signed int int_fast32_t;
type uint_fast32_t (line 669) | typedef unsigned int uint_fast32_t;
type int_fast64_t (line 677) | typedef int64_t int_fast64_t;
type uint_fast64_t (line 678) | typedef uint64_t uint_fast64_t;
type ecb_bool (line 945) | typedef int ecb_bool;
type T (line 986) | typedef T type;
function ecb_ctz32 (line 1061) | int
function ecb_ctz64 (line 1092) | int
function ecb_popcount32 (line 1106) | int
function ecb_ld32 (line 1118) | int ecb_ld32 (uint32_t x)
function ecb_ld64 (line 1138) | int ecb_ld64 (uint64_t x)
function ecb_bool (line 1155) | ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
function ecb_bool (line 1157) | ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
function ecb_bitrev8 (line 1160) | uint8_t ecb_bitrev8 (uint8_t x)
function ecb_bitrev16 (line 1167) | uint16_t ecb_bitrev16 (uint16_t x)
function ecb_bitrev32 (line 1178) | uint32_t ecb_bitrev32 (uint32_t x)
function ecb_popcount64 (line 1192) | int
function ecb_rotl8 (line 1207) | uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 ...
function ecb_rotr8 (line 1208) | uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 ...
function ecb_rotl16 (line 1209) | uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 ...
function ecb_rotr16 (line 1210) | uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 ...
function ecb_rotl32 (line 1211) | uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 ...
function ecb_rotr32 (line 1212) | uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 ...
function ecb_rotl64 (line 1213) | uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 ...
function ecb_rotr64 (line 1214) | uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 ...
function ecb_ctz (line 1218) | inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
function ecb_ctz (line 1219) | inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
function ecb_ctz (line 1220) | inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
function ecb_ctz (line 1221) | inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
function ecb_is_pot (line 1223) | inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
function ecb_is_pot (line 1224) | inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
function ecb_is_pot (line 1225) | inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
function ecb_is_pot (line 1226) | inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
function ecb_ld (line 1228) | inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
function ecb_ld (line 1229) | inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
function ecb_ld (line 1230) | inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
function ecb_ld (line 1231) | inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
function ecb_popcount (line 1233) | inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
function ecb_popcount (line 1234) | inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
function ecb_popcount (line 1235) | inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
function ecb_popcount (line 1236) | inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
function ecb_bitrev (line 1238) | inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
function ecb_bitrev (line 1239) | inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
function ecb_bitrev (line 1240) | inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
function ecb_rotl (line 1242) | inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_r...
function ecb_rotl (line 1243) | inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_r...
function ecb_rotl (line 1244) | inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_r...
function ecb_rotl (line 1245) | inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_r...
function ecb_rotr (line 1247) | inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_r...
function ecb_rotr (line 1248) | inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_r...
function ecb_rotr (line 1249) | inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_r...
function ecb_rotr (line 1250) | inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_r...
function ecb_bswap16 (line 1269) | uint16_t
function ecb_bswap32 (line 1276) | uint32_t
function ecb_bswap64 (line 1283) | uint64_t
function ecb_unreachable (line 1295) | void ecb_unreachable (void) { }
function ecb_byteorder_helper (line 1302) | uint32_t
function ecb_bool (line 1330) | ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x...
function ecb_bool (line 1332) | ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x...
function ecb_inline (line 1337) | ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return e...
function ecb_inline (line 1338) | ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return e...
function ecb_inline (line 1339) | ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return e...
function ecb_inline (line 1341) | ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return e...
function ecb_inline (line 1342) | ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return e...
function ecb_inline (line 1343) | ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return e...
function ecb_inline (line 1345) | ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; ...
function ecb_inline (line 1346) | ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; ...
function ecb_inline (line 1347) | ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; ...
function ecb_inline (line 1349) | ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ec...
function ecb_inline (line 1350) | ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ec...
function ecb_inline (line 1351) | ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ec...
function ecb_inline (line 1353) | ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ec...
function ecb_inline (line 1354) | ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ec...
function ecb_inline (line 1355) | ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ec...
function ecb_inline (line 1357) | ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return e...
function ecb_inline (line 1358) | ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return e...
function ecb_inline (line 1359) | ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return e...
function ecb_inline (line 1361) | ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return e...
function ecb_inline (line 1362) | ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return e...
function ecb_inline (line 1363) | ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return e...
function ecb_inline (line 1365) | ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v...
function ecb_inline (line 1366) | ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v...
function ecb_inline (line 1367) | ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v...
function ecb_inline (line 1369) | ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_pok...
function ecb_inline (line 1370) | ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_pok...
function ecb_inline (line 1371) | ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_pok...
function ecb_inline (line 1373) | ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_pok...
function ecb_inline (line 1374) | ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_pok...
function ecb_inline (line 1375) | ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_pok...
function ecb_bswap (line 1379) | inline uint8_t ecb_bswap (uint8_t v) { return v; }
function ecb_bswap (line 1380) | inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
function ecb_bswap (line 1381) | inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
function ecb_bswap (line 1382) | inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
function T (line 1384) | T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
function T (line 1385) | T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
function T (line 1386) | T ecb_peek (const void *ptr) { return *(const T *)ptr; }
function T (line 1387) | T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T...
function T (line 1388) | T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T...
function T (line 1389) | T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); ...
function T (line 1390) | T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T...
function T (line 1391) | T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T...
function T (line 1393) | T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
function T (line 1394) | T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
function ecb_poke (line 1395) | void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
function ecb_poke_be (line 1396) | void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_hos...
function ecb_poke_le (line 1397) | void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_hos...
function ecb_poke_u (line 1398) | void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
function ecb_poke_be_u (line 1399) | void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_hos...
function ecb_poke_le_u (line 1400) | void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_hos...
function T (line 1414) | inline T ecb_div_rd (T val, T div)
function T (line 1419) | inline T ecb_div_ru (T val, T div)
function ecb_array_length (line 1431) | inline int ecb_array_length (const T (&arr)[N])
function ecb_binary16_to_binary32 (line 1442) | uint32_t
function ecb_binary32_to_binary16 (line 1474) | uint16_t
function ecb_float_to_binary32 (line 1589) | uint32_t
function ecb_binary32_to_float (line 1629) | float
function ecb_double_to_binary64 (line 1659) | uint64_t
function ecb_binary64_to_double (line 1699) | double
function ecb_float_to_binary16 (line 1729) | uint16_t
function ecb_binary16_to_float (line 1737) | float
type ev_watcher (line 1850) | typedef ev_watcher *W;
type ev_watcher_list (line 1851) | typedef ev_watcher_list *WL;
type ev_watcher_time (line 1852) | typedef ev_watcher_time *WT;
function ecb_noinline (line 1897) | ecb_noinline
function ev_linux_version (line 1941) | static unsigned int
function ev_printerr (line 1981) | static void
function ecb_cold (line 1990) | ecb_cold
function ev_syserr (line 1998) | static void
function ecb_cold (line 2039) | ecb_cold
function inline_speed (line 2046) | inline_speed void *
type ANFD (line 2073) | typedef struct
type ANPENDING (line 2092) | typedef struct
type ANFS (line 2100) | typedef struct
type ANHE (line 2109) | typedef struct {
type WT (line 2119) | typedef WT ANHE;
type ev_loop (line 2128) | struct ev_loop
type ev_loop (line 2138) | struct ev_loop
function ev_tstamp (line 2167) | ev_tstamp
function inline_size (line 2187) | inline_size ev_tstamp
function ev_tstamp (line 2203) | ev_tstamp
function ev_sleep (line 2210) | void
function inline_size (line 2242) | inline_size int
function ecb_noinline (line 2301) | ecb_noinline
function ecb_noinline (line 2307) | ecb_noinline
function inline_speed (line 2327) | inline_speed void
function inline_size (line 2334) | inline_size void
function inline_speed (line 2342) | inline_speed void
function inline_speed (line 2353) | inline_speed void
function inline_speed (line 2370) | inline_speed void
function ev_feed_fd_event (line 2379) | void
function inline_size (line 2388) | inline_size void
function inline_size (line 2467) | inline_size
function fd_kill (line 2483) | void
function fd_valid (line 2496) | int
function fd_ebadf (line 2508) | static void
function fd_enomem (line 2521) | static void
function ecb_noinline (line 2535) | ecb_noinline
function inline_speed (line 2552) | inline_speed void
function inline_speed (line 2586) | inline_speed void
function inline_speed (line 2636) | inline_speed void
function inline_speed (line 2666) | inline_speed void
function inline_size (line 2688) | inline_size void
function inline_size (line 2698) | inline_size void
type ANSIG (line 2712) | typedef struct
function evpipe_init (line 2728) | static void
function inline_speed (line 2773) | inline_speed void
function pipecb (line 2823) | static void
function ev_feed_signal (line 2890) | void
function ev_sighandler (line 2906) | static void
function ecb_noinline (line 2916) | ecb_noinline
function sigfdcb (line 2943) | static void
function inline_speed (line 2976) | inline_speed void
function childcb (line 3000) | static void
function timerfdcb (line 3029) | static void
function evtimerfd_init (line 3050) | static void
function ecb_cold (line 3101) | ecb_cold int
function ecb_cold (line 3107) | ecb_cold int
function enable_secure (line 3114) | int
function ev_supported_backends (line 3125) | ecb_cold
function ev_recommended_backends (line 3142) | ecb_cold
function ev_embeddable_backends (line 3174) | ecb_cold
function ev_backend (line 3189) | unsigned int
function ev_iteration (line 3196) | unsigned int
function ev_depth (line 3202) | unsigned int
function ev_set_io_collect_interval (line 3208) | void
function ev_set_timeout_collect_interval (line 3214) | void
function ev_set_userdata (line 3220) | void
function ev_set_invoke_pending_cb (line 3232) | void
function ev_set_loop_release_cb (line 3238) | void
function loop_init (line 3248) | static void
function ecb_cold (line 3354) | ecb_cold
function inline_size (line 3480) | inline_size void
function ev_loop (line 3547) | ev_loop *
function verify_watcher (line 3566) | static void
function verify_heap (line 3576) | static void
function array_verify (line 3592) | static void
function ev_verify (line 3604) | void ecb_cold
function ev_default_loop (line 3694) | int
function ev_loop_fork (line 3724) | void
function ev_invoke (line 3732) | void
function ev_pending_count (line 3738) | unsigned int
function ecb_noinline (line 3750) | ecb_noinline
function inline_size (line 3776) | inline_size void
function inline_size (line 3799) | inline_size void
function ecb_noinline (line 3838) | ecb_noinline
function inline_size (line 3864) | inline_size void
function periodics_reschedule (line 3908) | static void
function timers_reschedule (line 3932) | static void
function inline_speed (line 3947) | inline_speed void
function ev_run (line 4016) | int
function ev_break (line 4204) | void
function ev_ref (line 4210) | void
function ev_unref (line 4216) | void
function ev_now_update (line 4222) | void
function ev_suspend (line 4228) | void
function ev_resume (line 4234) | void
function inline_size (line 4250) | inline_size void
function inline_size (line 4257) | inline_size void
function inline_speed (line 4273) | inline_speed void
function ev_clear_pending (line 4283) | int
function inline_size (line 4300) | inline_size void
function inline_speed (line 4309) | inline_speed void
function inline_size (line 4317) | inline_size void
function ecb_noinline (line 4326) | ecb_noinline
function ecb_noinline (line 4356) | ecb_noinline
function ecb_noinline (line 4379) | ecb_noinline
function ecb_noinline (line 4404) | ecb_noinline
function ecb_noinline (line 4435) | ecb_noinline
function ev_tstamp (line 4463) | ev_tstamp
function ecb_noinline (line 4470) | ecb_noinline
function ecb_noinline (line 4506) | ecb_noinline
function ecb_noinline (line 4535) | ecb_noinline
function ecb_noinline (line 4551) | ecb_noinline
function ecb_noinline (line 4634) | ecb_noinline
function ev_child_start (line 4676) | void
function ev_child_stop (line 4693) | void
function ecb_noinline (line 4728) | ecb_noinline
function ecb_noinline (line 4803) | ecb_noinline
function ecb_noinline (line 4821) | ecb_noinline
function infy_cb (line 4853) | static void
function ev_check_2625 (line 4869) | void
function inline_size (line 4881) | inline_size int
function inline_size (line 4892) | inline_size void
function inline_size (line 4914) | inline_size void
function ev_stat_stat (line 4968) | void
function ecb_noinline (line 4977) | ecb_noinline
function ev_stat_start (line 5018) | void
function ev_stat_stop (line 5049) | void
function ev_idle_start (line 5075) | void
function ev_idle_stop (line 5098) | void
function ev_prepare_start (line 5122) | void
function ev_prepare_stop (line 5137) | void
function ev_check_start (line 5160) | void
function ev_check_stop (line 5175) | void
function ecb_noinline (line 5198) | ecb_noinline
function embed_io_cb (line 5205) | static void
function embed_prepare_cb (line 5216) | static void
function embed_fork_cb (line 5233) | static void
function embed_idle_cb (line 5252) | static void
function ev_embed_start (line 5259) | void
function ev_embed_stop (line 5292) | void
function ev_fork_start (line 5314) | void
function ev_fork_stop (line 5329) | void
function ev_cleanup_start (line 5352) | void
function ev_cleanup_stop (line 5369) | void
function ev_async_start (line 5393) | void
function ev_async_stop (line 5412) | void
function ev_async_send (line 5433) | void
type ev_once (line 5443) | struct ev_once
function once_cb (line 5451) | static void
function once_cb_io (line 5464) | static void
function once_cb_to (line 5472) | static void
function ev_once (line 5480) | void
type ev_embed (line 5523) | struct ev_embed
type ev_stat (line 5546) | struct ev_stat
FILE: libev/ev.h
type EV_TSTAMP_T (line 159) | typedef EV_TSTAMP_T ev_tstamp;
type ev_loop (line 178) | struct ev_loop
type ev_watcher (line 304) | typedef struct ev_watcher
type ev_watcher_list (line 310) | typedef struct ev_watcher_list
type ev_watcher_time (line 316) | typedef struct ev_watcher_time
type ev_io (line 323) | typedef struct ev_io
type ev_timer (line 333) | typedef struct ev_timer
type ev_periodic (line 342) | typedef struct ev_periodic
type ev_signal (line 353) | typedef struct ev_signal
type ev_child (line 363) | typedef struct ev_child
type ev_statdata (line 376) | typedef struct _stati64 ev_statdata;
type ev_statdata (line 378) | typedef struct stat ev_statdata;
type ev_stat (line 383) | typedef struct ev_stat
type ev_idle (line 399) | typedef struct ev_idle
type ev_prepare (line 407) | typedef struct ev_prepare
type ev_check (line 414) | typedef struct ev_check
type ev_fork (line 421) | typedef struct ev_fork
type ev_cleanup (line 428) | typedef struct ev_cleanup
type ev_embed (line 436) | typedef struct ev_embed
type ev_async (line 459) | typedef struct ev_async
type ev_watcher (line 472) | struct ev_watcher
type ev_watcher_list (line 473) | struct ev_watcher_list
type ev_io (line 475) | struct ev_io
type ev_timer (line 476) | struct ev_timer
type ev_periodic (line 477) | struct ev_periodic
type ev_signal (line 478) | struct ev_signal
type ev_child (line 479) | struct ev_child
type ev_stat (line 481) | struct ev_stat
type ev_idle (line 484) | struct ev_idle
type ev_prepare (line 486) | struct ev_prepare
type ev_check (line 487) | struct ev_check
type ev_fork (line 489) | struct ev_fork
type ev_cleanup (line 492) | struct ev_cleanup
type ev_embed (line 495) | struct ev_embed
type ev_async (line 498) | struct ev_async
function ev_loop (line 568) | ev_loop *
function EV_INLINE (line 576) | EV_INLINE int
function EV_INLINE (line 593) | EV_INLINE ev_tstamp
function EV_INLINE (line 600) | EV_INLINE int
function EV_INLINE (line 843) | EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
function EV_INLINE (line 844) | EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
function EV_INLINE (line 845) | EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
function EV_INLINE (line 846) | EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
function ev_loop_count (line 848) | EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_...
function ev_loop_depth (line 849) | EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_...
function EV_INLINE (line 850) | EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_...
type ev_loop (line 854) | typedef struct ev_loop ev_loop;
FILE: libev/ev_epoll.c
function epoll_modify (line 70) | static void
function epoll_poll (line 143) | static void
function epoll_epoll_create (line 242) | static int
function inline_size (line 262) | inline_size
function inline_size (line 279) | inline_size
function ecb_cold (line 287) | ecb_cold
FILE: libev/ev_vars.h
type ev_prepare (line 189) | struct ev_prepare
Condensed preview — 11 files, each showing path, character count, and a content snippet. Download the .json file or copy for the full structured content (276K chars).
[
{
"path": ".gitignore",
"chars": 27,
"preview": "*.o\n*.gch\ndns2tcp\n.vscode/\n"
},
{
"path": "LICENSE",
"chars": 34523,
"preview": " GNU AFFERO GENERAL PUBLIC LICENSE\n Version 3, 19 November 2007\n\n Copyright (C)"
},
{
"path": "Makefile",
"chars": 537,
"preview": "CC = gcc\nCFLAGS = -std=c99 -Wall -Wextra -Wvla -O3 -flto -fno-strict-aliasing -ffunction-sections -fdata-sections -DNDEB"
},
{
"path": "README.md",
"chars": 2314,
"preview": "# dns2tcp\n\n一个 DNS 实用工具，用于将 DNS 查询从 UDP 转为 TCP。\n\n当然有很多 DNS 工具都可以实现这个功能，比如 pdnsd、dnsforwarder；但如果你只是想使用其 UDP 转 TCP 功能（比如配合"
},
{
"path": "dns2tcp.c",
"chars": 17289,
"preview": "#define _GNU_SOURCE\n#include <stdio.h>\n#include <stdlib.h>\n#include <stddef.h>\n#include <stdint.h>\n#include <stdbool.h>\n"
},
{
"path": "libev/config.h",
"chars": 2019,
"preview": "#pragma once\n\n#pragma GCC diagnostic ignored \"-Wcomment\"\n#pragma GCC diagnostic ignored \"-Wunused-function\"\n#pragma GCC "
},
{
"path": "libev/ev.c",
"chars": 151415,
"preview": "/*\n * libev event processing core, watcher management\n *\n * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmor"
},
{
"path": "libev/ev.h",
"chars": 30280,
"preview": "/*\n * libev native API header\n *\n * Copyright (c) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de>\n * All rights rese"
},
{
"path": "libev/ev_epoll.c",
"chars": 10365,
"preview": "/*\n * libev epoll fd activity backend\n *\n * Copyright (c) 2007,2008,2009,2010,2011,2016,2017,2019 Marc Alexander Lehmann"
},
{
"path": "libev/ev_vars.h",
"chars": 7549,
"preview": "/*\n * loop member variable declarations\n *\n * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2019 Marc Alexander Lehma"
},
{
"path": "libev/ev_wrap.h",
"chars": 8240,
"preview": "/* DO NOT EDIT, automatically generated by update_ev_wrap */\n#ifndef EV_WRAP_H\n#define EV_WRAP_H\n#define acquire_cb ((lo"
}
]
About this extraction
This page contains the full source code of the zfl9/dns2tcp GitHub repository, extracted and formatted as plain text for AI agents and large language models (LLMs). The extraction includes 11 files (258.4 KB), approximately 76.3k tokens, and a symbol index with 355 extracted functions, classes, methods, constants, and types. Use this with OpenClaw, Claude, ChatGPT, Cursor, Windsurf, or any other AI tool that accepts text input. You can copy the full output to your clipboard or download it as a .txt file.
Extracted by GitExtract — free GitHub repo to text converter for AI. Built by Nikandr Surkov.