windows 系统资源获取的c++ 方法

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1. 获取windows cpu 核个数

size_t getProcessorCores(){    DWORD process, system;    if(GetProcessAffinityMask(GetCurrentProcess(), &process, &system))    {        int count = 0;        for(int i = 0; i < 32; i++)            if(system & (1 << i))                count++;        return count;    }    // may be we hav't PROCESS_QUERY_INFORMATION access right    SYSTEM_INFO sysinfo;    GetSystemInfo( &sysinfo );    return sysinfo.dwNumberOfProcessors;}size_t getAvailableProcessorCores(){    DWORD process, system;    if(GetProcessAffinityMask(GetCurrentProcess(), &process, &system))    {        int count = 0;        for(int i = 0; i < 32; i++)            if(process & (1 << i))                count++;        return count;    }    // may be we hav't PROCESS_QUERY_INFORMATION access right    SYSTEM_INFO sysinfo;    GetSystemInfo( &sysinfo );    return sysinfo.dwNumberOfProcessors;}

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