_PROCESS_MEMORY_COUNTERS给出了关于内存使用的负值 [英] _PROCESS_MEMORY_COUNTERS is giving negative values about memory usage

问题描述

我试图通过我的应用程序获得内存使用。我按照此

I am trying to get memory usage by my application. I followed this

这里是我写的代码，但是在1 GB之后它给出了负值。

Here is code that I write but after 1 GB it is giving negative values.

    _PROCESS_MEMORY_COUNTERS info;
    GetProcessMemoryInfo( GetCurrentProcess( ), &info, sizeof(info) );
    int membyte = ((size_t)info.WorkingSetSize);
    QString s1 = "MB";

    double mem = membyte/1048576.0;
    if(mem>900.0)
    {
        mem = mem/1024.0;
        s1 = "GB";
    }

    double f,i,t1,t2;
    f = modf (mem , &i);
    f = f*100;
    t1 = modf(f,&t2);
    mem = i + (t2/100.0);

推荐答案

int membyte = ((size_t)info.WorkingSetSize);

不要这样做。不能保证工作集大小将在 int 表示的范围内。也许你想使用 unsigned long 或更好地使用 SIZE_T 。

Don't do that. There's no guarantee the working set size will be in the range an int can represent. Perhaps you want to use an unsigned long or, better yet, a SIZE_T.

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