linux 调试技巧

1、添加log

printf("\033[1;43m %s,%s,%d\033[0m\n",__FILE__,__FUNCTION__,__LINE__);

FILE:文件名

FUNCTION：函数名

LINE：代码所在文件行数

 static void console_log(const char *format, ...) {
   static FILE *fpConsole;

   if (fpConsole == NULL) {
     fpConsole = fopen("/dev/console", "w");
   }

   if (fpConsole != NULL) {
     char aMsg[];
     va_list va;
     va_start(va, format);
     int nRet;
     if (((nRet = vsnprintf(aMsg, sizeof(aMsg), format, va)) < ) ||
         (nRet >= (int)sizeof(aMsg))) {
       fprintf(fpConsole, "%s: nRet=%d, sizeof(aMsg)=%d\n", __FUNCTION__, nRet,
               sizeof(aMsg));
     }
     va_end(va);
     fprintf(fpConsole, "%s\n", aMsg);
   }
 }