Full Code of shonm520/mu_event for AI

Repository: shonm520/mu_event
Branch: master
Commit: 3a5da1ad8eaa
Files: 33
Total size: 47.8 KB

Directory structure:
gitextract_05tbt9ce/

├── README.md
└── src/
    ├── buffer.c
    ├── buffer.h
    ├── config.h
    ├── connection.c
    ├── connection.h
    ├── epoll.c
    ├── epoll.h
    ├── event.c
    ├── event.h
    ├── event_loop.c
    ├── event_loop.h
    ├── example/
    │   ├── echo/
    │   │   ├── echosvr
    │   │   ├── echosvr.c
    │   │   └── run.sh
    │   └── timer/
    │       ├── run.sh
    │       ├── test_timer
    │       └── test_timer.c
    ├── listener.c
    ├── listener.h
    ├── logger.c
    ├── logger.h
    ├── makefile
    ├── ring_buffer.c
    ├── ring_buffer.h
    ├── servermanager.c
    ├── servermanager.h
    ├── tcpclient.c
    ├── tcpclient.h
    ├── testcase/
    │   ├── test_buffer.c
    │   └── test_timer.c
    ├── timer.c
    └── timer.h

================================================
FILE CONTENTS
================================================

================================================
FILE: README.md
================================================
#### C语言版muduo，对muduo的部分设计做了优化
#### 之前用buffer队列实现的缓冲区，效果不是很好，后来使用了环形缓冲区

#### 下面是和muduo的部分性能对比测试，测试标准参考陈硕大佬自己的标准 https://blog.csdn.net/solstice/article/details/5864889 


#### 下面是各数据时的吞吐量对比
![吞吐量对比1](https://upload-images.jianshu.io/upload_images/9444378-b2ae69351584481a.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)


#### 通过使用环形缓冲区，使得吞吐量大大提高，并超过了muduo。我想除了学习到了muduo的精华，还因为目前我的程序结构比较简单，没有其他杂项的缘故

#### 下图是发送数据量为16384B，不同并发连接下的对比
![并发时吞吐量对比2](https://upload-images.jianshu.io/upload_images/9444378-63e04366068867a7.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

###### 可以看到多连接时（高并发时）muevent吞吐量也超过了muduo


#### QQ讨论群：858791125


================================================
FILE: src/buffer.c
================================================
#include <stdlib.h>
#include <string.h>
#include "buffer.h"
#include "config.h"


socket_buffer* socket_buffer_new()
{
    socket_buffer* sb = (socket_buffer*)mu_malloc(sizeof(socket_buffer));
    sb->size = 0;
    sb->offset = 0;
    sb->head = sb->tail = NULL;
    sb->pool = (buffer_pool*)mu_malloc(sizeof(buffer_pool));
    sb->pool->head = NULL;
    sb->pool->len = 0;
    return sb;
}

void socket_buffer_free(socket_buffer* sb)
{
    buffer_node* head = sb->pool->head;
    for(; head != NULL; head = head->next)  {
        if (head->msg)  {
            mu_free(head->msg);
            head->msg = NULL;
        }
    }
}

buffer_node* new_buffer_node(int size)
{
    buffer_node** pool =  (buffer_node**)mu_malloc(sizeof(buffer_node*) * size);
    int i = 0;
    for (i = 0; i < size; i++)  {
        pool[i] = (buffer_node*)mu_malloc(sizeof(buffer_node));
    }
    for (i = 0; i < size; i++)  {
        pool[i]->msg = NULL;
        pool[i]->sz = 0;
        pool[i]->next = pool[i + 1];
    }
    pool[size - 1]->next = 0;
    return pool[0];
}


int buffer_push_data(socket_buffer* sb, char* msg, int sz)     //写数据到缓冲池中的新结点，然后sb指向新结点
{
    if (msg == NULL || sz == 0)  {
        return 0;
    }
    buffer_pool* pool = sb->pool;
    buffer_node* free_node = NULL;
    if (pool->head == NULL)  {                //缓冲池已空
        int len = pool->len + 1;
        int size = 8;
        if (len <= LARGE_PAGE_NODE - 3 )  {
            size <<= len;
        }  else  {
            size <<= LARGE_PAGE_NODE - 3;
        }
        free_node = new_buffer_node(size);
        pool->len = size;
    }
    else  {
        free_node = pool->head;
    }   
    pool->head = free_node->next;            //取pool的头结点作为free_node,然后头结点指向next
    char* msgt = (char*)mu_malloc(sz);
    memcpy(msgt, msg, sz);
    free_node->msg = msgt;
    free_node->sz = sz;
    free_node->next = NULL;

    if (sb->head == NULL)  {
        sb->head = sb->tail = free_node;
    }  else  {
        sb->tail->next = free_node;
        sb->tail = free_node;
    }
    sb->size += sz;
    return sb->size;
}


void buffer_node_release(socket_buffer* sb)    //返回给缓冲池
{
    buffer_pool* pool = sb->pool;
    buffer_node* free_node = sb->head;     //把头结点释放
    sb->offset = 0;
    sb->head = free_node->next;            //重置数据区
    if (sb->head == NULL)  {
        sb->tail = NULL;
    }
    free_node->next = pool->head;          //把该结点加入到缓冲池
    mu_free(free_node->msg);               //这里放心free因为结点的指针有自己的空间
    free_node->msg = NULL;
    free_node->sz = 0;
    pool->head = free_node;                //重置缓冲池头结点
}


char* buffer_read_spec(socket_buffer* sb, int sz, int* realSz)    //读取缓冲区sz个字节
{
    if (sz == 0)  {
        return NULL;
    }
    if (sb->size < sz)  {     //缓冲区数据不够
        if (realSz)  {
            return buffer_read_all(sb, realSz);
        }
        else {
            return NULL;
        }
    }

    buffer_pool* pool = sb->pool;   
    sb->size -= sz;
    buffer_node* cur = sb->head;
    char* msg = (char*)mu_malloc(sz);
    int curLen = cur->sz - sb->offset;
    if (sz <= curLen)  {            //要读取的数据小于等于当前结点剩余的数据
        memcpy(msg, cur->msg + sb->offset, sz);
        sb->offset += sz;
        if (sz == curLen)  {        //刚好读完就释放该结点
            buffer_node_release(sb);    
        }
        return msg;
    }
    else  {    //要读取的数据大于当前结点的数据，其余结点又有
        int offset = 0;
        for ( ;; )  {
            int curLen = cur->sz - sb->offset;
            if (curLen >= sz)  {          //第二次读
                memcpy(msg + offset, cur->msg + sb->offset, sz);
                offset += sz;
                sb->offset += sz;
                if (curLen == sz)  {
                    buffer_node_release(sb);
                }
                break;
            }
            int real_sz = (sz < curLen) ? sz : curLen;
            memcpy(msg + offset, cur->msg + sb->offset, real_sz);   //先把当前结点剩余的的数据给读取了
            offset += real_sz;
            buffer_node_release(sb);
            sz -= curLen;
            if (sz == 0)  {
                break;
            }
            cur = sb->head;    //由于上面释放过，这里是新的结点
            if (!cur)   { 
                break;
            }
        }
        return msg;
    }
    return NULL;
}

char* buffer_read_all(socket_buffer* sb, int* retNum)      //读取缓冲区所有的字节
{
    int total_size = sb->size;
    if (total_size <= 0)  {
        return NULL;
    }
    char* msg = (char*)mu_malloc(total_size + 1); 
    int offset = 0;
    while(sb->head)  {
        buffer_node* cur = sb->head;
        int curLen = cur->sz - sb->offset;

        memcpy(msg + offset, cur->msg + sb->offset, curLen);
        offset += curLen; 
        buffer_node_release(sb);       //这里会重置sb->offset并重新设置头
    }
     if (retNum)  {
        *retNum = offset;
    }
    sb->size = 0;
    return msg;
}

int buffer_get_size(socket_buffer* sb)
{
    if (sb)
        return sb->size;
    return 0;
}







================================================
FILE: src/buffer.h
================================================
#pragma once

struct buffer_node_t {
    char* msg;
    int sz;
    struct buffer_node_t* next;

    char* buf;
    int cap;
};
 
 
struct buffer_pool_t {
    struct buffer_node_t* head;  
    int len;
};


struct socket_buffer_t {
    int size;
    int offset;
    struct buffer_node_t* head;
    struct buffer_node_t* tail;

    struct buffer_pool_t*  pool;
};



typedef struct buffer_node_t   buffer_node;
typedef struct socket_buffer_t socket_buffer;
typedef struct buffer_pool_t   buffer_pool;

socket_buffer* socket_buffer_new();
void socket_buffer_free(socket_buffer* sb);
int   buffer_push_data(socket_buffer* sb, char* msg, int sz);
void  buffer_node_release(socket_buffer* sb);
char* buffer_read_spec(socket_buffer* sb, int sz, int* realSz);
char* buffer_read_all(socket_buffer* sb, int* retNum);   

int buffer_get_size(socket_buffer* sb);

================================================
FILE: src/config.h
================================================
#pragma once 
#include <stdlib.h>

#ifndef bool
    #define bool int 
#endif

#ifndef true
    #define true 1
#endif 

#ifndef false
    #define false 0
#endif 


#ifndef NULL
    #define NULL 0
#endif 


#define mu_malloc malloc
#define mu_free   free

#define LARGE_PAGE_NODE 12   //buffer node 的对齐

#define MAX_EVENTS  32       //epoll_wait一次性监听最大的事件数量

#define DEFAULT_PORT  2020   //默认端口
#define MAX_LOOP 4           //max thread



#define MAX_TIMER_EVENT 100 //最大定时器个数   

================================================
FILE: src/connection.c
================================================
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/epoll.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/uio.h>
#include "connection.h"
#include "event_loop.h"
#include "event.h"
#include "config.h"
#include "ring_buffer.h"
#include "logger.h"


/*
    这里的connection仅仅指客户端连接后建立的socket connnection
*/


static void connection_passive_close(connection* conn);
static void connection_disconnect(connection* conn);
static void event_readable_callback(int fd, event* ev, void* arg);
static void event_writable_callback(int fd, event* ev, void* arg);

connection* connection_create(int connfd, message_callback_pt msg_cb)
{
    connection* conn = (connection* )mu_malloc(sizeof(connection));
    if (conn == NULL)  {
        debug_ret("create connection failed, file: %s, line: %d", __FILE__, __LINE__);
        return NULL;
    }

    memset(conn, 0, sizeof(connection));
    conn->connfd = connfd;
    conn->message_callback = msg_cb;

    //创建连接的时候没有指定EPOLLOUT,是因为在epoll水平触发的情形下指定EPOLLOUT会导致写事件一直被触发(通常写缓冲区是不满的)
    //这里的高效实现方式是有数据时直接调用发送,如果发现发送函数send调用之后缓冲区还有数据,则开启EPOLLOUT事件发送完毕后又关闭事件
    event* ev = (event*)event_create(connfd,  EPOLLIN | EPOLLPRI, event_readable_callback, conn, event_writable_callback, conn);
    if (ev == NULL)  {
        debug_ret("create event failed, file: %s, line: %d", __FILE__, __LINE__);
        mu_free(conn);
        return NULL;
    }

    conn->conn_event = ev;
    
    return conn;    
}


void connection_start(connection* conn, event_loop* loop)
{
    if (! conn->ring_buffer_read)  {
        conn->ring_buffer_read = ring_buffer_new();
    }

    if (! conn->ring_buffer_write)  {
        conn->ring_buffer_write = ring_buffer_new();
    }
    event_add_io(loop->epoll_fd, conn->conn_event);
}


static int read_buffer(int fd, connection* conn)       //使用了readv但是好像并没有提高效率，不过使用了栈上数据，避免了malloc，free
{
    int nread2 = 65536;
    char extrabuf2[nread2];
    struct iovec vec[2];

    char* start = ring_buffer_readable_start(conn->ring_buffer_read);
    int available_bytes = ring_buffer_available_bytes(conn->ring_buffer_read);
    vec[0].iov_base = start;
    vec[0].iov_len = available_bytes;        //一开始时为0，并不读到ring_buffer中去
    vec[1].iov_base = extrabuf2;
    vec[1].iov_len = nread2;

    ssize_t nread = readv(fd, vec, 2);      //最多读iovec结构体指定的长度,而且fd一定是非阻塞的
    if (nread == 0)  {
        return 0;
    }
    else if (nread < 0)  {
        if (errno == EAGAIN || errno == EWOULDBLOCK)  {
            return -1;
        }
        else  {
            debug_msg("read n < 0, fd : %d, file: %s, line: %d", conn->connfd, __FILE__, __LINE__);
            return -1;
        }
    }
    else if (nread <= available_bytes)  {
        conn->ring_buffer_read->end += nread;
        return nread;
    }
    else  {
        conn->ring_buffer_read->end += available_bytes;
        ring_buffer_push_data(conn->ring_buffer_read, extrabuf2, nread - available_bytes);
        return nread;
    }
    return -1;
}


static void event_readable_callback(int fd, event* ev, void* arg)
{
    connection* conn = (connection*)arg;
    int nread = read_buffer(fd, conn);
    if (nread > 0 && conn->message_callback)  {
        conn->message_callback(conn);
    }
    else if(nread <= 0)  {
        connection_passive_close(conn);
    }
}

static void event_writable_callback(int fd, event* ev, void* arg)
{
    int len = 0;
    connection* conn = (connection*)arg;
    char* msg = ring_buffer_get_msg(conn->ring_buffer_write, &len);
    if (msg && len > 0)  {
        int n = send(conn->connfd, msg, len, 0);
        if (n > 0)  {
            ring_buffer_release_bytes(conn->ring_buffer_write, n);
            len = ring_buffer_readable_bytes(conn->ring_buffer_write);
            if (len == 0)  {                  //发送完所有缓冲区数据后要关闭写触发
                event_disable_writing(conn->conn_event);
                if (conn->state == State_Closing)  {
                    connection_free(conn);    //如不关闭一直会触发
                    conn->state = State_Closed;
                }
            }
        }
    }
}

static void connection_passive_close(connection* conn)
{
    //printf("connection_passive_close!!! %d, life time is %d \n", conn->connfd, (int)time(NULL) - conn->time_on_connect);
    connection_disconnect(conn);
}

void connection_established(connection* conn)
{
    if (conn->connected_cb)
        conn->connected_cb(conn);
}

void connection_active_close(connection* conn)
{   
    //printf("active close %d\n", conn->connfd);
    connection_disconnect(conn);
}

void connection_set_disconnect_callback(connection* conn, connection_callback_pt cb)
{
    conn->disconnected_cb = cb;
}

static void connection_disconnect(connection* conn)
{
    conn->state = State_Closing;
    if (ring_buffer_readable_bytes(conn->ring_buffer_write) > 0)   {     //收到对方关闭写的通知时，如果缓冲区还有数据要发送则等数据发送完毕后再关闭socket
        event_enable_writing(conn->conn_event); 
    }
    else  {
        connection_free(conn);    //如不关闭一直会触发
        conn->state = State_Closed;
    }
}

void connection_free(connection* conn)
{
    if (conn->disconnected_cb)  {
        conn->disconnected_cb(conn);
    }

    event_free(conn->conn_event);

    if (conn->ring_buffer_read)  {
        ring_buffer_free(conn->ring_buffer_read);
    }
    if (conn->ring_buffer_write)  {
        ring_buffer_free(conn->ring_buffer_write);
    }
    
    mu_free(conn);
}


void connection_send(connection *conn, char *buf, size_t len)  //外部调用来发送数据
{
    if (ring_buffer_readable_bytes(conn->ring_buffer_write) == 0)  {         //缓冲区为空直接发送
        int ret = send(conn->connfd, buf, len, 0);
    }
    else  {
        printf("connection_send %d\n", len);
        ring_buffer_push_data(conn->ring_buffer_write, buf, len);
        event_enable_writing(conn->conn_event);              //须开启才能发送
    }
}


int connection_send_buffer(connection *conn)                 //外部调用来发送数据
{
    int len = 0;
    char* msg = ring_buffer_get_msg(conn->ring_buffer_write, &len);
    if (msg && len > 0)  {
        int n = send(conn->connfd, msg, len, 0);
        if (n == -1)  {
            return -1;
        }
        if (n > 0)  {
            ring_buffer_release_bytes(conn->ring_buffer_write, n);
            if (n < len)  {       //没有发完全
                event_enable_writing(conn->conn_event);      //须开启才能发送
                return 1;
            }
            else  {
                return 0;
            }
        }
    }
    return -1;
}

================================================
FILE: src/connection.h
================================================

#pragma once

typedef struct connection_t connection;

typedef void (*message_callback_pt) (connection* conn);
typedef void (*connection_callback_pt)(connection *conn);

typedef struct event_t event;

typedef struct event_loop_t event_loop; 

typedef struct socket_buffer_t socket_buffer;
typedef struct ring_buffer_t   ring_buffer;
typedef struct buffer_pool_t   buffer_pool;

enum {
    State_Closing = 1,
    State_Closed = 2,
};

struct connection_t  {
    int connfd;
    event* conn_event;    //清理阶段和改变事件时用到
    message_callback_pt      message_callback;
    connection_callback_pt   connected_cb;
    connection_callback_pt   disconnected_cb;

    ring_buffer*   ring_buffer_read;
    ring_buffer*   ring_buffer_write;

    int state;

    void*  handler;
    char*  client_ip;        //client ip
    int    client_port;      //client port
    int    time_on_connect;   
};


connection* connection_create(int fd, message_callback_pt msg_cb);
void connection_start(connection* conn, event_loop* loop);
void connection_established(connection* conn);
void connection_active_close(connection* conn);
void connection_free(connection* conn);
void connection_send(connection *conn, char *buf, size_t len);
int connection_send_buffer(connection *conn);

void connection_set_disconnect_callback(connection* conn, connection_callback_pt cb);



================================================
FILE: src/epoll.c
================================================
#include <sys/time.h>
#include <sys/epoll.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include "logger.h"
#include "epoll.h"
#include "event.h"
#include "config.h"


int epoller_create()
{
    int epoll_fd = epoll_create(1024);  //大于0就好
    if (epoll_fd == -1)  {
         debug_ret("create epoll failed, file : %s, line : %d", __FILE__, __LINE__);
        return -1;
    }
    return epoll_fd;
}

void epoll_free(int fd)
{
    close(fd);
}

void epoller_add(int epoll_fd, event* e)
{
    struct epoll_event ev;
    ev.events = e->event_flag;
    ev.data.ptr = e;

    if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, e->fd, &ev) == -1)  {
        debug_sys("epoll_ctl add failed, file : %s, line : %d", __FILE__, __LINE__);
    }
}

void epoller_del(int epoll_fd, event* e)
{
    struct epoll_event ev;
    ev.events = e->event_flag;

    if (epoll_ctl(epoll_fd, EPOLL_CTL_DEL, e->fd, &ev) == -1)  {
        debug_sys("epoll_ctl del failed, file : %s, line : %d", __FILE__, __LINE__);
    }
}

void epoller_modify(int epoll_fd, event* e)
{
    struct epoll_event ev;
    ev.events = e->event_flag;
    ev.data.ptr = e;

    if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, e->fd, &ev) == -1)  {
        debug_sys("epoll_fd modify failed, file : %s, line : %d", __FILE__, __LINE__);
    }
}


struct timeval epoller_dispatch(int epoll_fd, int timeout)
{
    struct epoll_event events[MAX_EVENTS];
    int nfds = epoll_wait(epoll_fd, events, MAX_EVENTS, timeout);

    if (nfds == -1)  {
        if (errno != EINTR)  {
            debug_sys("epoll_wait failed, file : %s, line : %d", __FILE__, __LINE__);
        }
    }

    struct timeval now;
    gettimeofday(&now, NULL);

    int i;
    event* ev;
    for (i = 0; i < nfds; i++)  {
        ev = (event*)events[i].data.ptr;
        ev->time = now;
        ev->active_event = events[i].events;
        event_handler(ev);
    }

    struct timeval end;
    gettimeofday(&end, NULL);
    return end;
}

================================================
FILE: src/epoll.h
================================================
#pragma once


typedef struct event_t event;

int epoller_create();
void epoller_free();

void epoller_add(int fd, event* ev);
void epoller_del(int fd, event* ev);
void epoller_modify(int fd, event* ev);

struct timeval epoller_dispatch(int fd, int timeout);

================================================
FILE: src/event.c
================================================
#include <sys/epoll.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include "event.h"
#include "servermanager.h"
#include "event_loop.h"
#include "logger.h"
#include "epoll.h"

static void event_error_handler(event* ev)
{
    event_free(ev);
}

void event_handler(event* ev)
{
    if (ev->active_event & (EPOLLHUP | EPOLLERR))  {
        event_error_handler(ev);
        return;
    }

    if (ev->active_event & (EPOLLIN | EPOLLPRI))  {
        if (ev->event_read_handler)  {
            ev->event_read_handler(ev->fd, ev, ev->r_arg);
        }
    }
    if (ev->active_event & EPOLLOUT)  {
        if (ev->event_write_handler)  {
            ev->event_write_handler(ev->fd, ev, ev->w_arg);
        }
    }
}

event* event_create(int fd, short event_flag, event_callback_pt read_cb,
                    void* r_arg, event_callback_pt write_cb, void* w_arg)
{
    event* ev = (event*)malloc(sizeof(event));
    if (ev == NULL)  {
        debug_ret("file: %s, line: %d", __FILE__, __LINE__);
        return NULL;
    }

    ev->fd = fd;
    ev->event_flag = event_flag;
    ev->active_event = 0;
    ev->event_read_handler = read_cb;
    ev->r_arg = r_arg;

    ev->event_write_handler = write_cb;
    ev->w_arg = w_arg;

    return ev;
}

void event_free(event* ev)
{
    event_stop(ev);
    close(ev->fd);
	free(ev);
}

void event_add_io(int epoll_fd, event* ev)
{
    epoller_add(epoll_fd, ev);
    ev->epoll_fd = epoll_fd;
    ev->is_working = 1;
}

void event_modify_flag(event* ev, int new_flag)
{
    if (ev->is_working == 0)  {
        debug_msg("epoll_fd cannot modify, because it's not working now! %s, line: %d", __FILE__, __LINE__);
        return;
    }
    ev->event_flag = new_flag;
    epoller_modify(ev->epoll_fd, ev);
}

void event_add_flag(event* ev, int add_flag, int plus)
{
    int flag = ev->event_flag |= add_flag;
    if (plus == 0)  {
        flag = ev->event_flag &= ~add_flag;
    }
    event_modify_flag(ev, flag);
}

void event_enable_writing(event* ev)
{
    event_add_flag(ev, EPOLLOUT, 1);
}

void event_disable_writing(event* ev)
{
    event_add_flag(ev, EPOLLOUT, 0);
}


void event_stop(event *ev)
{
	if (ev->is_working == 0)                   //判断事件ev是否在epoll中,防止重复删除同一事件
		return;

    epoller_del(ev->epoll_fd, ev);

	ev->is_working = 0;
}

================================================
FILE: src/event.h
================================================
#pragma once
#include <sys/time.h>


typedef struct event_t event;
typedef struct server_manager_t server_manager;

typedef void (*event_callback_pt)(int fd, event* ev, void* arg);

struct event_t {
    int fd;
    int event_flag;
    int active_event;
    struct timeval time;

    event_callback_pt event_read_handler;
    void* r_arg;

    event_callback_pt event_write_handler;
    void* w_arg;

    int is_working;
    int epoll_fd;
};


event* event_create(int fd, short event_flag, event_callback_pt read_cb,
                    void* r_arg, event_callback_pt write_cb, void* w_arg);

int event_start(event* ev);
void event_stop(event* ev);
void event_free(event* ev);

void event_add_io(int epoll_fd, event* ev);
void event_enable_writing(event* ev);
void event_disable_writing(event* ev);

void event_handler(event* ev);

================================================
FILE: src/event_loop.c
================================================
#include <stdlib.h>
#include <stdio.h>
#include "logger.h"
#include "event_loop.h"
#include "config.h"
#include "epoll.h"


event_loop* event_loop_create()
{
    event_loop* loop = (event_loop*)mu_malloc(sizeof(event_loop));
    if (loop == NULL)  {
        debug_ret("create event loop failed, file : %s, line : %d", __FILE__, __LINE__);
        return NULL;
    }

    loop->epoll_fd = epoller_create();
    if (loop->epoll_fd == -1)  {
        debug_ret("epooler_create failed, file : %s, line : %d", __FILE__, __LINE__);
        mu_free(loop);
        return NULL;
    }

    return loop;
}

void event_loop_run(event_loop* loop)
{
    int timeout = -1;
    while(1)  {
        epoller_dispatch(loop->epoll_fd, timeout);
    }
}

================================================
FILE: src/event_loop.h
================================================
#pragma once

struct event_loop_t  {
    int epoll_fd;
};

typedef struct event_loop_t event_loop;

event_loop* event_loop_create();
void event_loop_run(event_loop* el);

================================================
FILE: src/example/echo/echosvr.c
================================================

#include <stdio.h>
#include "servermanager.h"
#include "connection.h"
#include "listener.h"
#include "ring_buffer.h"
#include "config.h"

void onMessage(connection *conn)
{
    int size = 0;
    char* msg = ring_buffer_get_msg(conn->ring_buffer_read, &size);
    printf("read all : %s, %d\n", msg, size);

    char buf[] = "abcd";
    connection_send(conn, buf, sizeof(buf) - 1);

    connection_send(conn, msg, size);
}

void onConnection(connection* conn)
{
    printf("connected!!! ip:port %s:%d\n", conn->client_ip, conn->client_port);
}

int main(int argc, char* argv[])
{
    int port = DEFAULT_PORT;
    int thread_num = MAX_LOOP;
    if (argc >= 2)
        port = atoi(argv[1]);
    if (argc >= 3)
        thread_num = atoi(argv[2]);
  
    printf("port, thread_num is %d, %d \n", port, thread_num);

	server_manager *manager = server_manager_create(port, thread_num);
	inet_address addr = addr_create("any", port);
	listener_create(manager, addr, onMessage, onConnection);
	server_manager_run(manager);

	return 0;
}




================================================
FILE: src/example/echo/run.sh
================================================
rm -f echosvr

gcc -o echosvr *.c ../../*.c -lpthread -g -I ../../ 

================================================
FILE: src/example/timer/run.sh
================================================
   
rm  test_timer   
echo "rm"
gcc -o test_timer test_timer.c ../../*.c -lpthread  -g -I ../../ 

================================================
FILE: src/example/timer/test_timer.c
================================================
#include<stdio.h>
#include "config.h"
#include "connection.h"
#include "servermanager.h"
#include "listener.h"
#include "timer.h"



static void timer_cb(void* arg)
{
    printf("timer tick 2 seconds!!!!\n\n");
}

static void timer_cb1(void* arg)
{
    printf("timer tick 1500 miseconds!!!!\n\n");
}

static void timer_cb_once(void* arg)
{
    printf("timer tick once!!!!\n\n");
}


int main(int argc, char* argv[])  
{
    
    int port = DEFAULT_PORT;
    int thread_num = MAX_LOOP;
    if (argc >= 2)
        port = atoi(argv[1]);
    if (argc >= 3)
        thread_num = atoi(argv[2]);


	server_manager *manager = server_manager_create(port, thread_num);
	inet_address addr = addr_create("any", port);
	listener_create(manager, addr, NULL, NULL);

    timer ti;
    ti.type = TIMER_OPT_REPEAT;
    ti.time_out = 2000;
    ti.callback = timer_cb;
    ti.arg = NULL;

    server_manager_add_timer(manager, ti);

    ti.type = TIMER_OPT_REPEAT;
    ti.time_out = 1500;
    ti.callback = timer_cb1;
    server_manager_add_timer(manager, ti);
    ti.type = TIMER_OPT_ONCE;
    ti.time_out = 5000;
    ti.callback = timer_cb_once;
    server_manager_add_timer(manager, ti);
	server_manager_run(manager);

	return 0;
}

================================================
FILE: src/listener.c
================================================
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/epoll.h>
#include <fcntl.h>
#include <string.h>
#include <arpa/inet.h>
#include <netinet/tcp.h> 
#include <stdio.h>
#include <time.h>
#include "listener.h"
#include "servermanager.h"
#include "event.h"
#include "connection.h"
#include "event_loop.h"
#include "logger.h"


extern event_loop *g_loops[];


inet_address addr_create(const char *ip, int port)
{
	if (ip == NULL)
		debug_quit("addr_create failed, ip is null, file: %s, line: %d", __FILE__, __LINE__);
	
	inet_address new_addr;

	memset(&new_addr.addr, 0, sizeof(new_addr.addr));
	new_addr.addr.sin_family = AF_INET;
	
	if (strcmp(ip, "any") == 0)
		new_addr.addr.sin_addr.s_addr = htonl(INADDR_ANY);
	else if(inet_pton(AF_INET, ip, &new_addr.addr.sin_addr) <= 0)
		debug_quit("inet_pton failed, file: %s, line: %d", __FILE__, __LINE__);
	
	new_addr.addr.sin_port = htons(port);
	return new_addr;
}

static void default_disconnected_callback(connection* conn)
{

}

static void event_accept_callback(int listenfd, event* ev, void* arg)
{
    server_manager *manager = (server_manager *)arg;
	inet_address client_addr;
	socklen_t clilen = sizeof(client_addr.addr);
	
	int connfd = accept(listenfd, (struct sockaddr *)&client_addr.addr,	&clilen);
	if (connfd < 0)  {
		int save = errno;
		if (save == EAGAIN || save == ECONNABORTED || save == EINTR ||
            save == EPROTO || save == EPERM || save == EMFILE)
		{
			return;
		}
		else  {
			debug_sys("accept failed, file: %s, line: %d", __FILE__, __LINE__);
		}
	}

	fcntl(connfd, F_SETFL, fcntl(connfd, F_GETFL) | O_NONBLOCK);

    static int i = 0;
	if (i >= manager->loop_num)
		i = 0;

    event_loop* loop = NULL;
    if (manager->loop_num == 0)  {     //如果没有开启线程则用主线程的
        loop = manager->loop;
    }
    else  {
        loop = g_loops[i++];
    }

    int tcp_nodelay = 1;              //不等对方发送ack直接发送减少延迟
    setsockopt(connfd, IPPROTO_TCP, TCP_NODELAY,(const void *) &tcp_nodelay, sizeof(int));                               
	
	connection *conn = connection_create(connfd, manager->msg_callback);      //后面的参数是指有消息时的用户回调
	if (conn == NULL)  {
		debug_quit("create connection failed, file: %s, line: %d", __FILE__, __LINE__);
	}
    conn->client_ip = inet_ntoa(client_addr.addr.sin_addr);
    conn->client_port = ntohs(client_addr.addr.sin_port);  //used for debug
    conn->time_on_connect = time(NULL);
    conn->disconnected_cb = default_disconnected_callback;
	
	if (manager->new_connection_callback) {
        conn->connected_cb = manager->new_connection_callback;
        connection_established(conn);
    }

    connection_start(conn, loop);
}


#define ERR_SOCKET 1
#define ERR_BIND   2
#define ERR_LISTEN 3
#define ERR_EVENT  4

listener* listener_create(server_manager* manager, inet_address ls_addr,
                         message_callback_pt msg_cb, connection_callback_pt new_con_cb)
{
    listener* ls = (listener*)malloc(sizeof(listener));
    if (ls == NULL)  {
        debug_ret("create listener failed, file: %s, line: %d", __FILE__, __LINE__);
        return NULL;
    }

    ls->listen_addr = ls_addr;

    manager->msg_callback = msg_cb;
    manager->new_connection_callback = new_con_cb;

    int err_code = 0;
    event* lev = NULL;
    int listen_fd;
    do {
        listen_fd = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);     //创建非阻塞套接字 
        if (listen_fd < 0)  {
            err_code = ERR_SOCKET;
            break;
        }

        int opt = 1;
        setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
        int ret = bind(listen_fd, (struct sockaddr *)&ls_addr.addr, sizeof(ls_addr.addr));
        if (ret < 0)  {
            err_code = ERR_BIND;
            break;
        }

        ret = listen(listen_fd, SOMAXCONN);
        if (ret < 0)  {
            err_code = ERR_LISTEN;
            break;
        }

        lev = event_create(listen_fd, EPOLLIN | EPOLLPRI, event_accept_callback, manager, NULL, NULL);       //后面参数是写事件回调及其参数,由于这里是监听socket不需要
        if (lev == NULL)  {
            err_code = ERR_EVENT;
            break;
        }
    } while(0);

    if (err_code != 0)  {
        debug_ret("create listener failed, error code is %d, file: %s, line: %d", err_code, __FILE__, __LINE__);
        if (listen_fd > 0)  {
            close(listen_fd);
        }
        free(ls);
        return NULL;
    }  
    else  {
        event_add_io(manager->loop->epoll_fd, lev);
    }
	
    return ls;
}



================================================
FILE: src/listener.h
================================================
#pragma once
#include <sys/socket.h>
#include <netinet/in.h>



/* 封装的IPv4地址和port */
typedef struct inet_addr_t {
	struct sockaddr_in addr;
} inet_address;

inet_address addr_create(const char *ip, int port);

typedef struct connection_t connection;

typedef void (*connection_callback_pt)(connection *conn);
typedef void (*message_callback_pt)(connection *conn);


typedef struct listener_t listener;

struct listener_t  {
    inet_address listen_addr;
    //event* ls_event;
};

typedef struct server_manager_t server_manager;

listener* listener_create(server_manager* manager, inet_address ls_addr,
                         message_callback_pt msg_cb, connection_callback_pt new_con_cb);

void listener_free(listener* ls);

================================================
FILE: src/logger.c
================================================

#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>


#define MAXLINE	128

#define DBG_PRINTF debug_print

static void	debug_print(int, const char *, va_list);

/* 系统调用非致命错误
 * 打印用户信息 + errno信息后返回
 */
void debug_ret(const char *fmt, ...)
{
	va_list	ap;

	va_start(ap, fmt);
	DBG_PRINTF(1, fmt, ap);
	va_end(ap);
}

/* 系统调用致命错误
 * 打印用户信息 + errno信息后终止进程
 */
void debug_sys(const char *fmt, ...)
{
	va_list	ap;

	va_start(ap, fmt);
	DBG_PRINTF(1, fmt, ap);
	va_end(ap);
	exit(1);
}

/* 非系统调用致命错误
 * 打印用户信息后终止进程
 */
void debug_quit(const char *fmt, ...)
{
	va_list	ap;

	va_start(ap, fmt);
	DBG_PRINTF(0, fmt, ap);
	va_end(ap);
	exit(1);
}

/* 普通用户信息 */
void debug_msg(const char *fmt, ...)
{
	va_list	ap;

	va_start(ap, fmt);
	DBG_PRINTF(0, fmt, ap);
	va_end(ap);
}

/* 打印核心函数 */
static void debug_print(int errnoflag, const char *fmt, va_list ap)
{
	int	errno_save, n;
	char buf[MAXLINE + 1];

	errno_save = errno;

	vsnprintf(buf, MAXLINE, fmt, ap);	/* safe */

	n = strlen(buf);
	if (errnoflag)
		snprintf(buf + n, MAXLINE - n, ": %s", strerror(errno_save));
	strcat(buf, "\n");

	fflush(stderr);
	fputs(buf, stderr);	/* no newline */
	fflush(stderr);
}



================================================
FILE: src/logger.h
================================================

#pragma once

void debug_ret(const char *fmt, ...);
void debug_sys(const char *fmt, ...);
void debug_msg(const char *fmt, ...);
void debug_quit(const char *fmt, ...);

================================================
FILE: src/makefile
================================================
src = $(wildcard ./*c)
obj = $(patsubst ./%.c, ./%.o, $(src))

LIB = libmuevent.a
CC = gcc
CFLAGS := -g -lpthread 



%.o:%.c
	$(CC) $(CFLAGS) -c $< -o $@ 

$(LIB):$(obj)
	rm -f $@
	ar cr $@ $(obj)
	rm -f $(obj) 



.PHONY:clean
clean:
	rm -f $(obj) $(LIB) 
.PHONY:cleantemp
cleantemp:
	rm -f $(obj) 

================================================
FILE: src/ring_buffer.c
================================================
#include <string.h>
#include <stdlib.h>
#include "ring_buffer.h"
#include "config.h"

ring_buffer* ring_buffer_new()
{
    ring_buffer* rb = (ring_buffer*)mu_malloc(sizeof(ring_buffer));
    memset(rb, 0, sizeof(ring_buffer));
    return rb;
}


void ring_buffer_free(ring_buffer* rb)
{
    if (rb->msg)  {
        mu_free(rb->msg);
    }
}



void ring_buffer_push_data(ring_buffer* rb, char* msg, int size)
{
    int used = rb->end - rb->start;
    int available = rb->cap - used;
    if (available < size)  {          //可用数据不足了
        if (rb->start > size)  {      //可以塞前面
            memmove(rb->msg, rb->msg + rb->start, used);
            rb->start = 0;
            memcpy(rb->msg + used, msg, size);
            rb->end = used + size;
        }
        else  {
            rb->cap = rb->cap * 2 + size;
            char* new_msg = (char*)mu_malloc(rb->cap);
            if (used > 0 )  {
                memcpy(new_msg, rb->msg + rb->start, used);
            }
            memcpy(new_msg + used, msg, size);
            if (rb->msg)  {    //刚开始非空
                mu_free(rb->msg);
            }
            rb->msg = new_msg;
            rb->start = 0;
            rb->end = size + used;
        }
    }
    else  {
        memcpy(rb->msg + rb->end, msg, size);
        rb->end += size;
    }
}




char* ring_buffer_readable_start(ring_buffer* rb)
{
    return rb->msg + rb->start;
}

char* ring_buffer_get_msg(ring_buffer* rb, int* len)
{
    char* msg = rb->msg + rb->start;
    if (len)  {
        int ocuSize = rb->end - rb->start;
        *len = ocuSize;
    }
    if (rb->end == rb->start)  {
        msg = NULL;
    }
    return msg;
}


int ring_buffer_readable_bytes(ring_buffer* rb)
{
    int ocuSize = rb->end - rb->start;
    return ocuSize;
}

int ring_buffer_available_bytes(ring_buffer* rb)
{
    return rb->cap - rb->end;
}

void ring_buffer_release_bytes(ring_buffer* rb, int size)
{
    if (rb->msg + rb->start)  {
        memset(rb->msg + rb->start, 0, size);
    }
    rb->start += size;
    if (rb->start == rb->end)  {
        rb->start = rb->end = 0;
    }
}

================================================
FILE: src/ring_buffer.h
================================================
#pragma once

struct ring_buffer_t   {
    int start;
    int end;
    int cap;
    
    char* msg;

};

typedef struct ring_buffer_t ring_buffer;

ring_buffer* ring_buffer_new();
void ring_buffer_free(ring_buffer* rb);

void ring_buffer_push_data(ring_buffer* rb, char* msg, int size);



char* ring_buffer_readable_start(ring_buffer* rb);

int ring_buffer_readable_bytes(ring_buffer* rb);

void ring_buffer_release_bytes(ring_buffer* rb, int size);

char* ring_buffer_get_msg(ring_buffer* rb, int* len);

int ring_buffer_available_bytes(ring_buffer* rb);



================================================
FILE: src/servermanager.c
================================================
#include <unistd.h>
#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/time.h>
#include "servermanager.h"
#include "event_loop.h"
#include "epoll.h"
#include "config.h"
#include "timer.h"
#include "logger.h"

event_loop *g_loops[MAX_LOOP];

int started_loop = 0;
pthread_spinlock_t lock;

void* spawn_thread(void *arg)
{
	int i = (long)arg;
	g_loops[i] = event_loop_create();
    pthread_spin_lock(&lock);
    started_loop++;
    pthread_spin_unlock(&lock);
	event_loop_run(g_loops[i]);
    return 0;
}


server_manager* server_manager_create(int port, int thread_num)
{
    pthread_spin_init(&lock, PTHREAD_PROCESS_PRIVATE);
    server_manager* manager = (server_manager*)malloc(sizeof(server_manager));
    if (manager == NULL)  {
		debug_ret("create server_manager failed, file: %s, line: %d", __FILE__, __LINE__);
		return NULL;
	}
	manager->listen_port = port;

    manager->loop = event_loop_create();
    if (manager->loop == NULL)  {
        debug_ret("create epoller failed, file: %s, line: %d", __FILE__, __LINE__);
	 	mu_free(manager);
	 	return NULL;
    }

    signal(SIGPIPE, SIG_IGN);

    if (thread_num < 0 || thread_num > MAX_LOOP) {
        thread_num = MAX_LOOP;
    }
    manager->loop_num = thread_num;
    pthread_t tid;
    long long i = 0;
	for (i = 0; i < thread_num; i++)  {
		pthread_create(&tid, NULL, spawn_thread, (void *)i);
	}

    while(true)  {       //等event_loop全部create完毕
        pthread_spin_lock(&lock);
        if (started_loop == thread_num)  {
            pthread_spin_unlock(&lock);
            break;
        }
        pthread_spin_unlock(&lock);
    }

    pthread_spin_destroy(&lock);
    manager->timer_manager = timer_manager_create();
	
	return manager;
}

void server_manager_time_event(server_manager* manager, int timeout)
{
    timer_manager* tm = manager->timer_manager;
    if (!tm || tm->size <= 0)  {
        return;
    }

    timer_manager_update(tm, timeout);

    timer* top = tm->top;
    while(top->time_left <= 0)  {
        timer ti = timer_manager_pop(tm);
        if (ti.type == TIMER_OPT_ONCE)  {
            ti.callback(ti.arg);
        }
        else if (ti.type == TIMER_OPT_REPEAT)  {
            server_manager_add_timer(manager, ti);
            ti.callback(ti.arg);
        }
        top = tm->top;
    }
}


bool calc_timeout(server_manager* manager, int* timeout)
{
    timer_manager* tm = manager->timer_manager;
    if (tm && tm->size > 0 && tm->top)  {
        *timeout = tm->top->time_left;
        return true;
    }
    *timeout = -1;
    return false;
}


void server_manager_add_timer(server_manager* manager, timer ti)
{
    timer_manager* tm = manager->timer_manager;
    if (!tm)  {
        return ;
    }

    timer_manager_push(tm, ti);
}



void server_manager_run(server_manager* manager)
{
    int timeout = -1;
    while(1)  {
        bool has_timeout = calc_timeout(manager, &timeout);

        struct timeval now;
        gettimeofday(&now, NULL);
        struct timeval trigger_time = epoller_dispatch(manager->loop->epoll_fd, timeout);       //

        int64_t diff = (trigger_time.tv_sec - now.tv_sec) * 1000 * 1000 + (trigger_time.tv_usec - now.tv_usec);
        timeout = diff / 1000;

        if (has_timeout)  {
            server_manager_time_event(manager, timeout);         //已经过去了多少毫秒
        }
    }
}

================================================
FILE: src/servermanager.h
================================================
#pragma once 


typedef struct connection_t connection;

typedef void (*connection_callback_pt)(connection *conn);
typedef void (*message_callback_pt)(connection *conn);

typedef struct event_loop_t event_loop;

typedef struct timer_ timer;

typedef struct timer_manager_t timer_manager;


struct server_manager_t {
    int epoll_fd;
    int listen_port;
    int loop_num;

    event_loop* loop;

    connection_callback_pt new_connection_callback;
    message_callback_pt msg_callback;

    timer_manager* timer_manager;
};


typedef struct server_manager_t server_manager;


server_manager* server_manager_create(int port, int thread_num);
void server_manager_run(server_manager* manager);

void server_manager_add_timer(server_manager* manager, timer ti);

 

================================================
FILE: src/tcpclient.c
================================================
#include <sys/epoll.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "tcpclient.h"
#include "config.h"
#include "event_loop.h"
#include "event.h"
#include "connection.h"
#include "logger.h"


tcpclient* tcpclient_create(const char* ip, short port)
{
    tcpclient* cli = (tcpclient*)mu_malloc(sizeof(tcpclient));
    int socket_fd = socket(AF_INET, SOCK_STREAM, 0);  
    if (socket_fd < 0)  {
        debug_ret("create socket failed, file: %s, line: %d", __FILE__, __LINE__);
        return NULL;
	}
    cli->connfd = socket_fd;
    cli->ip = (char*)ip;
    cli->port = port;

    signal(SIGPIPE, SIG_IGN);

    return cli;
}

static void default_disconnect_callback(connection* conn)
{
    printf("client disconnected#######\n\n");
}


int tcpclient_connect(tcpclient* cli, connected_callback_pt connected_cb, message_callback_pt msg_cb)
{
    struct sockaddr_in server_address;
    memset( &server_address, 0, sizeof(server_address));
    server_address.sin_family = AF_INET;
    inet_pton( AF_INET, cli->ip, &server_address.sin_addr);
    server_address.sin_port = htons(cli->port);

    int ret = connect(cli->connfd, (struct sockaddr*)&server_address, sizeof(server_address));
    if (ret == -1)  {
        debug_sys("connect failed, file: %s, line: %d", __FILE__, __LINE__);
        return -1;
    }

    connection *conn = connection_create(cli->connfd, msg_cb);      //后面的参数是指有消息时的用户回调
	if (conn == NULL)  {
		debug_quit("create connection failed, file: %s, line: %d", __FILE__, __LINE__);
	}
    conn->disconnected_cb = default_disconnect_callback;

    connected_cb(conn);
    return 0;
}



void tcpclient_run(event_loop* loop)
{
    event_loop_run(loop);
}



================================================
FILE: src/tcpclient.h
================================================
#pragma once

typedef struct event_loop_t event_loop;
typedef struct connection_t connection;
typedef void (*message_callback_pt)(connection *conn);

struct tcpclient_t  {
    int connfd;
    char* ip;
    short port;

    event_loop* loop;
    //message_callback_pt msg_callback;
};


typedef struct tcpclient_t tcpclient;

tcpclient* tcpclient_create(const char* ip, short port);


typedef void (*connected_callback_pt)(connection *conn);

int tcpclient_connect(tcpclient* cli, connected_callback_pt connected_cb, message_callback_pt msg_cb);

int tcpclient_send(tcpclient* cli);

void tcpclient_run(event_loop* loop);

================================================
FILE: src/testcase/test_buffer.c
================================================
#include<stdio.h>
#include<stdlib.h>

#include "../buffer.h"

int main()  
{
    socket_buffer* sb = socket_buffer_new();

    buffer_push_data(sb, "123456", 6);
    buffer_push_data(sb, "abcdef", 6);
    buffer_push_data(sb, "xyzmnl", 6);
    
    int size = 0;
    char* msg = buffer_read_spec(sb, 28, NULL);
    printf("read %s, %d\n", msg, size);
    printf("aft read sb->size is %d\n\n", sb->size);

    msg = buffer_read_spec(sb, 18, &size);
    printf("read %s, %d\n", msg, size);
    printf("aft read sb->size is %d\n\n", sb->size);

    msg = buffer_read_all(sb, &size);
    printf("read %s, %d\n", msg, size);
    printf("aft read sb->size is %d\n\n", sb->size);

    socket_buffer_free(sb);
    return 0;
}

================================================
FILE: src/testcase/test_timer.c
================================================
#include <stdio.h>

#include "../timer.h"



int main()
{
    timer_manager* t = timer_manager_create();

    timer* t1 = timer_new(500);
    timer* t2 = timer_new(250);
    timer* t3 = timer_new(360);
    timer* t4 = timer_new(180);
    timer* t5 = timer_new(300);
    timer* t6 = timer_new(180);
    
    timer_manager_push(t, *t1);
    timer_manager_push(t, *t2);
    timer_manager_push(t, *t3);
    timer_manager_push(t, *t4);
    timer_manager_push(t, *t5);
    timer_manager_push(t, *t6);

    //timer* top = timer_manager_get_top(t);

    //printf("t top is %d\n", top->time_out);

    timer top = timer_manager_pop(t);
    printf("t top is %d\n", top.time_out);
    top = timer_manager_pop(t);
    printf("t top is %d\n", top.time_out);
    top = timer_manager_pop(t);
    printf("t top is %d\n", top.time_out);
    top = timer_manager_pop(t);
    printf("t top is %d\n", top.time_out);
    top = timer_manager_pop(t);
    printf("t top is %d\n", top.time_out);
    top = timer_manager_pop(t);
    printf("t top is %d\n", top.time_out);


    timer_manager_push(t, *t3);
    timer_manager_push(t, *t3);
    timer_manager_push(t, *t3);
    top = timer_manager_pop(t);
    printf("t top is %d\n", top.time_out);

    timer_manager_free(t);

    return 0;
}

================================================
FILE: src/timer.c
================================================

#include <string.h>
#include "timer.h"
#include "config.h"


timer_manager* timer_manager_create()
{
    int size = sizeof(timer_manager);
    timer_manager* m = (timer_manager*)mu_malloc(size);
    if (NULL == m)  {
        return NULL;
    }

    memset(m, 0, size);
    m->cap = MAX_TIMER_EVENT;

    m->queue0 = (timer**)mu_malloc(size * m->cap);
    m->queue1 = (timer**)mu_malloc(size * m->cap);
    memset(m->queue0, 0, size * m->cap);
    memset(m->queue1, 0, size * m->cap);
    return m;
}

void timer_manager_free(timer_manager* m)
{
    if (m)  {
        timer** queue = m->queue0;
        if (m->index == 1)  {
            queue = m->queue1;
        }
        int i = 0;
        for (; i < m->cap ; i++)  {
            if (queue[i])  {
                mu_free(queue[i]);
            }
            else  {
                break;
            }
        }

        if(m->queue0) mu_free(m->queue0);
        if(m->queue1) mu_free(m->queue1);
    }
}


timer* timer_new(int utime)
{
    timer* t = (timer*)malloc(sizeof(timer));
    memset(t, 0, sizeof(timer));
    t->time_out = utime;
    return t;
}


void timer_manager_push(timer_manager* manager, timer ti)
{
    int size = manager->size;
    if (size >= manager->cap)  {
        timer** temp0 = manager->queue0;
        timer** temp1 = manager->queue1;
        int size_of_ptr = sizeof(timer*);
        manager->queue0 = (timer**)mu_malloc(size_of_ptr * manager->cap * 2);
        manager->queue1 = (timer**)mu_malloc(size_of_ptr * manager->cap * 2);

        memset(manager->queue0, 0, size_of_ptr * manager->cap * 2);
        memset(manager->queue1, 0, size_of_ptr * manager->cap * 2);

        //memcpy(manager->queue0, temp0, manager->cap);
        //memcpy(manager->queue1, temp1, manager->cap);

        if (manager->index == 0)  {
            int i = 0;
            for (; i < manager->size; i++)  {
                manager->queue0[i] = temp0[i];
            }
        }
        else  {
            int i = 0;
            for (; i < manager->size; i++)  {
                manager->queue1[i] = temp1[i];
            }
        }

        mu_free(temp0);
        mu_free(temp1);
        manager->cap *= 2;
    }
    ti.time_left = ti.time_out;
    timer* pti = (timer*)mu_malloc(sizeof(timer));
    *pti = ti;
    if (manager->top)  {   
        if (pti->time_left < manager->top->time_left)  {   //替换最小的
            manager->top = pti;
            manager->top_index = size;
        }
    }
    else  {
        manager->top = pti;
    }

    if (manager->index == 0)  {
        manager->queue0[manager->size++] = pti;
    }
    else  {
        manager->queue1[manager->size++] = pti;
    }
}


timer timer_manager_pop(timer_manager* manager)
{
    timer ti;
    ti.time_out = 0;
    if (manager == NULL)  {
        return ti;
    }
    if (manager->size <= 0)  {
        return ti;
    }
    timer ret = *manager->top;
    if (manager->size == 1)  {
        manager->top = NULL;
        manager->size = 0;
        return ret;
    }
    mu_free(manager->top);
    manager->top = NULL;
    int top_index = manager->top_index;
    if (manager->size > 1) {
        timer* top = NULL;
        timer** queue0;
        timer** queue1;
        if (manager->index == 0)  {
            queue0 = manager->queue0;
            queue1 = manager->queue1;
        }
        else  {
            queue0 = manager->queue1;
            queue1 = manager->queue0;
        }
        manager->index = (manager->index + 1) % 2; 
        int i = 0;
        int j = 0;
        for (; i < manager->cap; i++)  {
            if (i < manager->size)  {
                if (i == top_index)  {
                    continue;
                }
                queue1[j] = queue0[i];
                if (top == NULL)  {
                    top = queue0[i];
                    manager->top_index = 0;
                }
                else  {
                    if (queue0[i]->time_left < top->time_left)  {
                        top = queue0[i];
                        manager->top_index = j;
                    }
                }
                j++; 
            }
            else  {
                queue0[i] = NULL;
                queue1[i] = NULL;
            }   
        }
        manager->top = top;
    }
    manager->size -= 1;
    return ret;
}

timer timer_manager_get_top(timer_manager* manager)
{
    return *manager->top;
}

void timer_manager_update(timer_manager* manager, int timeout)
{
    timer** queue = NULL;
    if (manager->index == 0)  {
        queue = manager->queue0;
    }
    else  {
        queue = manager->queue1;
    }

    int i = 0;
    for (; i < manager->size; i++)  {
        timer* ti = queue[i];
        ti->time_left -= timeout;
    }
}


================================================
FILE: src/timer.h
================================================
#pragma once 


typedef void (*timeout_callback_pt)(void *arg);


enum TimerOptions {
    TIMER_OPT_NONE,		// 超时不处理 
	TIMER_OPT_ONCE,		// 超时处理一次 
	TIMER_OPT_REPEAT	// 超时重复处理 
};


struct timer_  {
    int time_out;        //单位毫秒
    int time_left;
    enum TimerOptions type;
    timeout_callback_pt callback;
    void* arg;
};

typedef struct timer_ timer;

struct timer_manager_t  {
    timer* top;
    timer** queue0;
    timer** queue1;
    int index;
    int size;
    int cap;
    int top_index;
};


typedef struct timer_manager_t timer_manager;

timer_manager* timer_manager_create();

void timer_manager_free(timer_manager* m);

timer* timer_new(int utime);

void timer_manager_push(timer_manager* manager, timer ti);

timer timer_manager_pop(timer_manager* manager);

timer timer_manager_get_top(timer_manager* manager);

void timer_manager_update(timer_manager* manager, int timeout);