#工程经验分享# 内存泄露排查

Posted 2022-01-06 J-A

这里简单记录下ubuntu下进行程序内存消耗的检测，以及对于内存泄露的排查方法。
//获取系统当前可用内存

int GetSysMemInfo()

   int mem_free = -1; //空闲的内存 = 总内存 - 使用了的内存
   int mem_total = -1; //当前系统可用总内存
   int mem_buffers = -1; //缓存区的内存大小
   int mem_cached = -1; //缓存区的内存大小
   char name[20];
   FILE *fp;
   char buf1[128], buf2[128], buf3[128], buf4[128], buf5[128];
   int buff_len = 128;
   fp = fopen("/proc/meminfo", "r");
   if(fp == NULL)
   
       printf("GetSysMemInfo() error! file not exist\\n");
       return -1;
   
   if(NULL == fgets(buf1, buff_len, fp) ||
      NULL == fgets(buf2, buff_len, fp) ||
      NULL == fgets(buf3, buff_len, fp) ||
      NULL == fgets(buf4, buff_len, fp) ||
      NULL == fgets(buf5, buff_len, fp))
   
       printf("GetSysMemInfo() error! fail to read!\\n");
       fclose(fp);
       return -1;
   
   fclose(fp);
   sscanf(buf1, "%s%d", name, &