[Linux系統效能分析] lowMemDetect

 static bool lowMemDetect()

{

    #define MIN_MEM_FREE 25000 //KB

    #define MIN_SWAP_FREE 2000 //KB

    int memfree = 320000, swapfree = 128000;

    char s_line[64] = {0};

    FILE *pt_file = fopen("/proc/meminfo","r");

    if(pt_file == NULL)

    {

        return false;

    }

    while(fgets(s_line,sizeof(s_line), pt_file) != NULL)

    {

        sscanf(s_line, "MemFree:%d", &memfree);

        sscanf(s_line, "SwapFree:%d", &swapfree);

        if(memfree<MIN_MEM_FREE && swapfree<MIN_SWAP_FREE)

        {

            fclose(pt_file);

            AM_DBG_ERROR("Low Memory Detect: memfree = %d, swapfree = %d\n", memfree, swapfree);

            return true;

        }

    }

    //AM_DBG_ERROR("TEST: memfree = %d, swapfree = %d\n", memfree, swapfree);

    fclose(pt_file);

    return false;

}