[
  {
    "path": "LICENSE",
    "content": "                                 Apache License\n                           Version 2.0, January 2004\n                        http://www.apache.org/licenses/\n\n   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION\n\n   1. Definitions.\n\n      \"License\" shall mean the terms and conditions for use, reproduction,\n      and distribution as defined by Sections 1 through 9 of this document.\n\n      \"Licensor\" shall mean the copyright owner or entity authorized by\n      the copyright owner that is granting the License.\n\n      \"Legal Entity\" shall mean the union of the acting entity and all\n      other entities that control, are controlled by, or are under common\n      control with that entity. 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  },
  {
    "path": "README.md",
    "content": "## C-LOG\r\n[![Release Version](https://img.shields.io/badge/release-1.0.0-red.svg)](https://github.com/0xmalloc/c-log/releases) \r\n\r\n## What is c-log\r\na fast ,stable and thread-safe log lib(logger) for C/C++ language\r\n\r\n## How to Use \r\nyou can use  \"sh build.sh\" to build the testing application and also i suggest you to `run \"./bench_test\" (single_thread)to see the performance`\r\n\r\nyou can use this log module by the follow  guiding:\r\n```cpp\r\n    log_init(LL_TRACE, \"mysql\", \"./log/\");\r\n\tLOG_NOTICE(\"%s [time:%d]\", \"test calling log\", time(NULL));\r\n\tLOG_DEBUG(\"debug msg,only write to log when the loglevel bigger than or equal to debug [time:%d]\", time(NULL));\r\n\tLOG_WARN(\"warnning msg will be writing to the error files [time:%d]\", time(NULL));\r\n\tLOG_ERROR(\"you also can change  number of output files by rewrite the macro_define.h\");\r\n```\r\nand also you don't need to call close befor your application exit\r\nif you insist to calling close,please use WARN_W.log_close() INFO_W.log_close() and so so.\r\n\r\nthis module also provide some convenient macro, you can use it in the following scene\r\n```cpp\r\n    int function()\r\n\t{\r\n\t\tint ret;\r\n\t\tif()\r\n\t\t{\r\n\t\t\tret = function_call();\r\n\t\t\tMACRO_RET(ret != 0, -1);\r\n\t\t\tMACRO_WARN(ret != 0, \"function call failed  [ret:%d]\", ret);\r\n\t\t\tMACRO_WARN_RET(ret != 0, -1, \"function call failed  [ret:%d]\", ret)\r\n\t\t\t\r\n\t\t}\r\n\t}\r\n```\r\nThe performance of this log module is really depend on how fast your disk is.\r\nhere is test result:\r\n\r\n    case 1\r\n        Record Size: 280kb\r\n    \tCost Time: 42 seconds\r\n    \tData File Size: 20GB\r\n    \tyes. we write 20GB file in 102s,that's means we write 200MB per second.and\r\n    \talso this is the limitation of SATA.\r\n\r\n    case 2 \r\n        Record Size: 56byte\r\n    \tRecord Write per Senconds:200,000\r\n    \tyes,in it's general useage,you can gain high qps from this log module\r\n\r\nwhat will be the next?\r\n\r\n\r\n## About Author\r\n\r\n```javascript\r\n  var 0xmalloc = {\r\n    nickName  : \"zealot yin\",\r\n    email : '0xmalloc@gmail.com',\r\n    site : \"http://www.cnblogs.com/Creator/\"\r\n    weibo : \"http://www.weibo.com/zealotyin\"\r\n  }\r\n```\r\n"
  },
  {
    "path": "src/log.c",
    "content": "#include \"log.h\"\n#include <sys/file.h>\n#include <stdarg.h>\n#include <time.h>\n#include <stdlib.h>\n#include <string.h>\n#include <errno.h>\n#include <unistd.h>\n#include <sys/stat.h>\n\nLog_Writer WARN_W;\nLog_Writer INFO_W;\n__thread char Log_Writer::m_buffer[_LOG_BUFFSIZE];\n\nbool log_init(LogLevel l, const char* p_modulename, const char* p_logdir)\n{\n\t//如果路径存在文件夹，则判断是否存在\n\tif (access (p_logdir, 0) == -1)\n\t{\n\t\tif (mkdir (p_logdir, S_IREAD | S_IWRITE ) < 0)\n\t\t\tfprintf(stderr, \"create folder failed\\n\");\n\t}\n\tchar _location_str[_LOG_PATH_LEN];\n\tsnprintf(_location_str, _LOG_PATH_LEN, \"%s/%s.access\", p_logdir, p_modulename);\t\n\tINFO_W.loginit(l, _location_str);\n\tsnprintf(_location_str, _LOG_PATH_LEN, \"%s/%s.error\", p_logdir, p_modulename);\n\t//warning级别以上日志去WARN_W  去向由宏决定的 请见macro_define.h\n\tif(l > LL_WARNING)\n\t\tWARN_W.loginit(l, _location_str);\n\telse\n\t\tWARN_W.loginit(LL_WARNING, _location_str);\n\treturn true;\n}\n\nconst char* Log_Writer::logLevelToString(LogLevel l) {\n        switch ( l ) {\n\t\t\tcase LL_DEBUG:\n\t\t\t\treturn \"DEBUG\";\n\t\t\tcase LL_TRACE:\n\t\t\t\treturn \"TRACE\";\n\t\t\tcase LL_NOTICE:\n\t\t\t\treturn \"NOTICE\";\n\t\t\tcase LL_WARNING:\n\t\t\t\treturn \"WARN\" ;\n\t\t\tcase LL_ERROR:\n\t\t\t\treturn \"ERROR\";\n\t\t\tdefault:\n\t\t\t\treturn \"UNKNOWN\";\n        }\n}\n\t\nbool Log_Writer::checklevel(LogLevel l)\n{\n\tif(l >= m_system_level)\n\t\treturn true;\n\telse\n\t\treturn false;\n}\n\nbool Log_Writer::loginit(LogLevel l, const  char *filelocation, bool append, bool issync)\n{\n\tMACRO_RET(NULL != fp, false);\n    m_system_level = l;\n    m_isappend = append; \n    m_issync = issync; \n\tif(strlen(filelocation) >= (sizeof(m_filelocation) -1))\n\t{\n\t\tfprintf(stderr, \"the path of log file is too long:%d limit:%d\\n\", strlen(filelocation), sizeof(m_filelocation) -1);\n\t\texit(0);\n\t}\n\t//本地存储filelocation  以防止在栈上的非法调用调用\n\tstrncpy(m_filelocation, filelocation, sizeof(m_filelocation));\n\tm_filelocation[sizeof(m_filelocation) -1] = '\\0';\n\t\n\tif('\\0' == m_filelocation[0])\n\t{\n\t\tfp = stdout;\n\t\tfprintf(stderr, \"now all the running-information are going to put to stderr\\n\");\n\t\treturn true;\n\t}\n\t\n\tfp = fopen(m_filelocation, append ? \"a\":\"w\");\n\tif(fp == NULL)\n\t{\n\t\tfprintf(stderr, \"cannot open log file,file location is %s\\n\", m_filelocation);\n\t\texit(0);\n\t}\n\t//setvbuf (fp, io_cached_buf, _IOLBF, sizeof(io_cached_buf)); //buf set _IONBF  _IOLBF  _IOFBF\n\tsetvbuf (fp,  (char *)NULL, _IOLBF, 0);\n\tfprintf(stderr, \"now all the running-information are going to the file %s\\n\", m_filelocation);\n\treturn true;\n}\n\nint Log_Writer::premakestr(char* m_buffer, LogLevel l)\n{\n    time_t now;\n\tnow = time(&now);;\n\tstruct tm vtm; \n    localtime_r(&now, &vtm);\n    return snprintf(m_buffer, _LOG_BUFFSIZE, \"%s: %02d-%02d %02d:%02d:%02d \", logLevelToString(l),\n            vtm.tm_mon + 1, vtm.tm_mday, vtm.tm_hour, vtm.tm_min, vtm.tm_sec);\n}\n\nbool Log_Writer::log(LogLevel l, char* logformat,...)\n{\n\tMACRO_RET(!checklevel(l), false);\n\tint _size;\n\tint prestrlen = 0;\n\t\n\tchar * star = m_buffer;\n\tprestrlen = premakestr(star, l);\n\tstar += prestrlen;\n\t\n\tva_list args;\n\tva_start(args, logformat);\n\t_size = vsnprintf(star, _LOG_BUFFSIZE - prestrlen, logformat, args);\n\tva_end(args);\n\t\n\tif(NULL == fp)\n\t\tfprintf(stderr, \"%s\", m_buffer);\n\telse\n\t\t_write(m_buffer, prestrlen + _size);\n\treturn true;\n}\n\nbool Log_Writer::_write(char *_pbuffer, int len)\n{\n\tif(0 != access(m_filelocation, W_OK))\n\t{\t\n\t\tpthread_mutex_lock(&m_mutex);\n\t\t//锁内校验 access 看是否在等待锁过程中被其他线程loginit了  避免多线程多次close 和init\n\t\tif(0 != access(m_filelocation, W_OK))\n\t\t{\n\t\t\tlogclose();\n\t\t\tloginit(m_system_level, m_filelocation, m_isappend, m_issync);\n\t\t}\n\t\tpthread_mutex_unlock(&m_mutex);\n\t}\n\n\tif(1 == fwrite(_pbuffer, len, 1, fp)) //only write 1 item\n\t{\n\t\tif(m_issync)\n          \tfflush(fp);\n\t\t*_pbuffer='\\0';\n    }\n    else \n\t{\n        int x = errno;\n\t    fprintf(stderr, \"Failed to write to logfile. errno:%s    message:%s\", strerror(x), _pbuffer);\n\t    return false;\n\t}\n\treturn true;\n}\n\nLogLevel Log_Writer::get_level()\n{\n\treturn m_system_level; \n}\n\nbool Log_Writer::logclose()\n{\n\tif(fp == NULL)\n\t\treturn false;\n\tfflush(fp);\n\tfclose(fp);\n\tfp = NULL;\n\treturn true;\n}\n\n\n\n"
  },
  {
    "path": "src/log.h",
    "content": "#ifndef   _MACRO_LogModule\n#define   _MACRO_LogModule\n#include <stdio.h>\n#include <pthread.h>\n#include \"macro_define.h\"\n\n/* ÿ̵߳buffer size*/\n#define   _LOG_BUFFSIZE  1024*1024*4\n/* ǰ̵ Stream IO buffer size*/\n#define   _SYS_BUFFSIZE  1024*1024*8\n/* log ļַ·󳤶*/\n#define\t  _LOG_PATH_LEN  250\n/* ־Ӧģ*/\n#define   _LOG_MODULE_LEN 32\n\ntypedef  enum LogLevel {  \n\tLL_DEBUG = 1,\n\tLL_TRACE = 2,\n\tLL_NOTICE = 3, \n\tLL_WARNING = 4, \n\tLL_ERROR = 5,\n}LogLevel;\n\n/**\n*\tLog_Writer  ־\n*/\nclass Log_Writer\n{\n\tpublic:\n\t\tLog_Writer()\n\t\t{\n\t\t\tm_system_level = LL_NOTICE;\n\t\t\t//fp = stderr;\n\t\t\tfp = NULL;\n\t\t\tm_issync = false;\n\t\t\tm_isappend = true;\n\t\t\tm_filelocation[0] ='\\0'; \n\t\t\tpthread_mutex_init(&m_mutex, NULL);\n\t\t}\n\t\t~Log_Writer(){\n\t\t\tlogclose();\n\t\t}\n\t\tbool loginit(LogLevel l, const  char *filelocation, bool append = true, bool issync = false);\n\t\tbool log(LogLevel l,char *logformat,...);\n\t\tLogLevel get_level();\n\t\tbool logclose();\n\tprivate:\n\t\tconst char* logLevelToString(LogLevel l);\n\t\tbool checklevel(LogLevel l);\n\t\tint premakestr(char* m_buffer, LogLevel l);\n\t\tbool _write(char *_pbuffer, int len);\n\tprivate:\n\t\tenum LogLevel m_system_level;\n\t\tFILE* fp;\n\t\tbool m_issync;\n\t\tbool m_isappend;\n\t\tchar m_filelocation[_LOG_PATH_LEN];\n\t\tpthread_mutex_t m_mutex;\n\t\tstatic __thread char m_buffer[_LOG_BUFFSIZE];\n\t\t//The __thread specifier may be applied to any global, file-scoped static, function-scoped static, \n\t\t//or static data member of a class. It may not be applied to block-scoped automatic or non-static data member\n\t\t//in the log  scence,It's safe!!!!\n\t\t//һԱ֮˳õ__threadԴleak,ͬʱҲõĶLog_Writerţ\n\t\t//Ϊһ߳ͬһʱֻһLog_Writerڸɻ֮m_bufferreset\n\t\t//Լһ߳ûLog_Write(Ϊһ߳ڵֻ̬д) Ҳ̰߳ȫģ\n};\n\nextern Log_Writer WARN_W;\nextern Log_Writer INFO_W;\n\n/**\n * LogLevel ־\n * p_modulename ģ mysql\n * p_logdir  ־Ŀ¼\n * */\nbool log_init(LogLevel l, const char* p_modulename, const char* p_logdir);\n#endif\n"
  },
  {
    "path": "src/macro_define.h",
    "content": "#ifndef  _MACRO_DEFINE\n#define  _MACRO_DEFINE\n//============basic===================\n\n#define LOG_ERROR(log_fmt, log_arg...) \\\n    do{ \\\n        WARN_W.log(LL_ERROR,   \"[%s:%d][%s] \" log_fmt \"\\n\", \\\n                     __FILE__, __LINE__, __FUNCTION__, ##log_arg); \\\n    } while (0) \n\n#define LOG_WARN(log_fmt, log_arg...) \\\n    do{ \\\n        WARN_W.log(LL_WARNING,   \"[%s:%d][%s] \" log_fmt \"\\n\", \\\n                     __FILE__, __LINE__, __FUNCTION__, ##log_arg); \\\n    } while (0) \n\n#define LOG_NOTICE(log_fmt, log_arg...) \\\n    do{ \\\n        INFO_W.log(LL_NOTICE,   \"[%s:%d][%s] \" log_fmt \"\\n\", \\\n                     __FILE__, __LINE__, __FUNCTION__, ##log_arg); \\\n    } while (0) \n\n#define LOG_TRACE(log_fmt, log_arg...) \\\n    do{ \\\n        INFO_W.log(LL_TRACE,   \"[%s:%d][%s] \" log_fmt \"\\n\", \\\n                     __FILE__, __LINE__, __FUNCTION__, ##log_arg); \\\n    } while (0) \n\n#define LOG_DEBUG(log_fmt, log_arg...) \\\n    do{ \\\n        INFO_W.log(LL_DEBUG,   \"[%s:%d][%s] \" log_fmt \"\\n\", \\\n                     __FILE__, __LINE__, __FUNCTION__, ##log_arg); \\\n    } while (0) \n\n//============extend===================\n#define MACRO_RET(condition, return_val) {\\\n    if (condition) {\\\n        return return_val;\\\n    }\\\n}\n\n#define MACRO_WARN(condition, log_fmt, log_arg...) {\\\n    if (condition) {\\\n        LOG_WARN( log_fmt, ##log_arg);\\\n    }\\\n}\n\n#define MACRO_WARN_RET(condition, return_val, log_fmt, log_arg...) {\\\n    if ((condition)) {\\\n        LOG_WARN( log_fmt, ##log_arg);\\\n\t\treturn return_val;\\\n    }\\\n}\n#endif\n"
  },
  {
    "path": "test/bench_test.c",
    "content": "#include \"log.h\"\n#include <string.h>\n#include <stdio.h>\n#include <signal.h>\n#include <unistd.h>\n\n/*\n * 单线程压力测试\n * */\nint common_test()\n{\n\tLOG_DEBUG(\"testing write log befor log_init: %s\", \"haha\");\n}\n\nvoid test01()\n{\n    //init  log\n\t//log_init(LL_TRACE, \"mysql\", \"./log\");\n\tlog_init(LL_TRACE, \"bench\", \"./\");\n    \n\tint i;\n\tchar _strbuf[1024*1024*4];\n\n\tchar *_log_str = \"You got something wrong here\";\t\n\tfor(i = 0; i < 10000; i++)\n\t{\n\t\tstrncat(_strbuf, _log_str, strlen(_log_str));\n\t}\n\tprintf(\"Log size of each log:%d\", strlen(_strbuf));\t\n\tfor(i = 0; i < 1000000000; i++)\n\t{\n\t\tLOG_NOTICE(\"%s [value:%d]\", _strbuf, i);\n    }\n}\n\nint main()\n{\n    test01();\n}\n"
  },
  {
    "path": "test/build.sh",
    "content": "#!/bin/bash\nSRCPATH=\"../src/\"\nrm -f test_log test_pthread_log ultimate_test\ng++ -o test_log  \"$SRCPATH\"log.c    test.c  -lpthread  -I \"$SRCPATH\"\ng++ -o bench_test  \"$SRCPATH\"log.c    bench_test.c  -lpthread  -I \"$SRCPATH\"\ng++ -o test_pthread_log  \"$SRCPATH\"log.c    thread_test.c -lpthread -I \"$SRCPATH\"\ng++ -o ultimate_test  \"$SRCPATH\"log.c    ultimate_test.c  -I \"$SRCPATH\"\n\nif ls *.access >/dev/null 2>/dev/null  \nthen\n\trm *.access\nfi\nif ls *.error >/dev/null 2>/dev/null  \nthen \n\trm *.error\nfi\n"
  },
  {
    "path": "test/test.c",
    "content": "#include \"log.h\"\n#include <string.h>\n#include <stdio.h>\n#include <signal.h>\n#include <unistd.h>\n/*\n * 基本功能测试\n */\nint common_test()\n{\n\tLOG_DEBUG(\"testing write log befor log_init: %s\", \"haha\");\n}\n\nvoid test01()\n{\n\t//测试init 之前调用log_wwarn的结果\n\tcommon_test();\n    //init  log\n\t//log_init(LL_TRACE, \"mysql\", \"./log\");\n\tlog_init(LL_DEBUG, \"mysql\", \"./\");\n    \n\tint i;\n\tchar _strbuf[200*1024];\n\n\tchar *_log_str = \"You got something wrong here\";\t\n\tfor(i = 0; i < 1; i++)\n\t{\n\t\tstrncat(_strbuf, _log_str, strlen(_log_str));\n\t}\n\tcommon_test(); \n\t\n\tfor(i = 0; i < 10; i++)\n\t{\n\t\t//sleep(1);\n\t\tif(0 == (i% 5))\n\t\t\tLOG_NOTICE(\"%s [value:%d] [xx:%d]\", _strbuf, i, 10);\n\t\telse if(1 == i % 5)\n\t\t\tLOG_DEBUG(\"%s [value:%d]\", _strbuf, i); \n\t\telse if (2 == i % 5)\n\t\t\tLOG_TRACE(\"%s [value:%d]\", _strbuf, i);\n\t\telse if (3 == i % 5)\n\t\t\tLOG_WARN(\"%s [value:%d]\", _strbuf, i);\n\t\telse \n\t\t\tLOG_ERROR(\"%s [value:%d]\", _strbuf, i);\n    }\n}\n\nint main()\n{\n    test01();\n\t\t\n}\n"
  },
  {
    "path": "test/thread_test.c",
    "content": "#include \"log.h\"\n#include <string.h>\n#include <stdio.h>\n#include <signal.h>\n#include <unistd.h>\n#include <pthread.h>\n/*\n * 测试是否多线程安全\n * */\nbool quit = false;\nvoid signal_handler(int sig){\n\tswitch(sig){\n\t\tcase SIGTERM:\n\t\tcase SIGINT:\n\t\t\tquit = true;\n\t\t\tbreak;\n\t}\n\tprintf(\"bingo sig\\n\");\n}\n\nvoid* test01(void *)\n{\n    int i;\n\tchar _strbuf[200*1024];\n\n\tchar *_log_str = \"You got something wrong here\";\t\n\tfor(i = 0; i < 1; i++)\n\t{\n\t\tstrncat(_strbuf, _log_str, strlen(_log_str));\n\t}\n\n    for(i=0;i<1000000000;i++)\n\t{\n\t\t//测试日志是否立即写入到文件\n\t\tsleep(1);\n\t\tif(0 == (i% 5)) \n            LOG_NOTICE(\"%s [value:%d]\", _strbuf, i);\n        else if(1 == i % 5)\n            LOG_DEBUG(\"%s [value:%d]\", _strbuf, i); \n        else if (2 == i % 5)\n            LOG_TRACE(\"%s [value:%d]\", _strbuf, i);\n        else if (3 == i % 5)\n            LOG_WARN(\"%s [value:%d]\", _strbuf, i);\n        else    \n            LOG_ERROR(\"%s [value:%d]\", _strbuf, i);\t\n\t\tif(quit)\n\t\t\tbreak;\n    }\n}\n\nint main()\n{\n    signal(SIGPIPE, SIG_IGN);\n    signal(SIGINT, signal_handler);\n    signal(SIGTERM, signal_handler);\n\tlog_init(LL_TRACE, \"session\", \"./\");\n\t\n\tpthread_t pid[20];\n\tint i = 0;\n\tint ret = 0;\n\tfor(; i < 20; i++)\n\t{\n\t\tret = pthread_create(&pid[i], NULL, test01, NULL);\n\t\tMACRO_WARN_RET(0 != ret, -1, \"pthread_create error[ret:%d]\", ret)\n\t}\n\tfor(i = 0; i < 20; i++)\n\t{\n\t\tpthread_join(pid[i], NULL);\n\t}\n\t\t\n}\n"
  },
  {
    "path": "test/ultimate_test.c",
    "content": "#include \"log.h\"\n#include <unistd.h>\n#include <stdlib.h>\n#include <signal.h>\n\nvoid sig_alarm (int signo)\n{\n\texit (0);\n}\nint main()\n{\n\talarm (10);\n\tif (signal (SIGALRM, sig_alarm) == SIG_ERR)\n\t{\n\t\tprintf(\"%s\\n\", \"signal error\");\n\t}\n\tlog_init (LL_DEBUG, \"ultimate_test\", \"./\");\n\twhile (1)\n\t{\n\t\tLOG_TRACE(\"This is a test message!!!\");\n\t}\n\treturn 0;\n}\n"
  },
  {
    "path": "开源c-log日志库",
    "content": "开源的c-log日志库，支持c/c++\n"
  }
]