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linux c log 日志接口

2017-06-12 01:22  ljtcnblogs  阅读(2787)  评论(0)    收藏  举报 
 1 #define SIZE_16M               16777216             //1024*1024*16
 2 #define LOG_FILE_PATH          "./mylog.txt"        //日志文件路径
 3 #define LOG_PARAMS             LOG_FILE_PATH,__FILE__,__func__,__LINE__ //日志文件路径 调用函数所在文件 调用函数名 调用debugInfo时所在行号
 4
 5 //显示调用debugInfo接口的函数所在的文件名、函数名、行号
 6 int debugInfo(char *pLogPath, char *pFile, const char *pFuncName, int iLineNumb, char *fmt, ...);
 7 
 8 //调用举例： 9 debuInfo(LOG_PARAMS, “some string %s, some int %d and so on", "hello log", 101);
10 
11 //日志的编号
12 int giInfoNumb = 1;

13 int debugInfo(char *pLogPath, char *pFile, const char *pFuncName, int iLineNumb, char *fmt, ...)
14 {
15     if(NULL == pLogPath ||'\0' == pLogPath[0] || NULL == pFile || '\0' == pFile[0] || NULL == pFuncName ||'\0' == pFuncName[0])
16         return VS_ERR;
17     //判断文件大小是否清空该文件，每1000次写日志里检测1次文件大小
18     if(0 == (giInfoNumb % 1000))
19     {
20         struct stat fileStat;
21         if(0 == stat(pLogPath, &fileStat) && fileStat.st_size > SIZE_16M)
22             remove(pLogPath);
23     }
24     //打开文件，写入日志
25     FILE *pLogHandle = fopen(pLogPath, "a+");
26     if(NULL == pLogHandle)
27         return VS_ERR;
28     //写入日期、函数信息
29     time_t timeSecs = time(NULL);
30     struct tm *timeInfo = localtime(&timeSecs);
31     char acTitle[STR_LEN_2048] = { 0 };
32     snprintf(acTitle, sizeof(acTitle), "[%04d] [%d%02d%02d/%02d:%02d:%02d] [%s] [%s:%d]\n", giInfoNumb++,
33              timeInfo->tm_year + 1900, timeInfo->tm_mon + 1, timeInfo->tm_mday, 
34              timeInfo->tm_hour, timeInfo->tm_min, timeInfo->tm_sec, pFile, pFuncName, iLineNumb);
35     int iLen = strlen(acTitle);
36     fwrite(acTitle, iLen, 1, pLogHandle);
37     //写入日志
38     fwrite("\t\t\t", 3, 1, pLogHandle);
39     memset(acTitle, 0, sizeof(acTitle));
40     va_list args;
41     va_start(args, fmt);
42     vsnprintf(acTitle, sizeof(acTitle), fmt, args);
43     va_end(args);
44     iLen = strlen(acTitle);
45     fwrite(acTitle, iLen, 1, pLogHandle);
46     fwrite("\n", 1, 1, pLogHandle);
47     //关闭日志文件
48     fclose(pLogHandle);
49     return VS_OK;
50 }