linux 调试技巧

1、添加log

printf("33[1;43m %s,%s,%d33[0m ",__FILE__,__FUNCTION__,__LINE__);

FILE:文件名

FUNCTION：函数名

LINE：代码所在文件行数

 1 static void console_log(const char *format, ...) {
 2   static FILE *fpConsole;
 3 
 4   if (fpConsole == NULL) {
 5     fpConsole = fopen("/dev/console", "w");
 6   }
 7 
 8   if (fpConsole != NULL) {
 9     char aMsg[3584];
10     va_list va;
11     va_start(va, format);
12     int nRet;
13     if (((nRet = vsnprintf(aMsg, sizeof(aMsg), format, va)) < 0) ||
14         (nRet >= (int)sizeof(aMsg))) {
15       fprintf(fpConsole, "%s: nRet=%d, sizeof(aMsg)=%d
", __FUNCTION__, nRet,
16               sizeof(aMsg));
17     }
18     va_end(va);
19     fprintf(fpConsole, "%s
", aMsg);
20   }
21 }