vc中获取磁盘IO统计计数

想知道进程读写磁盘的状况,能够获取当前进程或指定进程的IO计数。spa

#include <Windows.h>
int get_io_bytes(ULONGLONG * read_bytes, ULONGLONG * write_bytes,ULONGLONG * wct,ULONGLONG * rct)
{
    IO_COUNTERS io_counter;
    HANDLE hProcess=GetCurrentProcess();//获取当前进程句柄
    if(GetProcessIoCounters(hProcess, &io_counter))
    {
        if(read_bytes) *read_bytes = io_counter.ReadTransferCount;//字节数
        if(write_bytes) *write_bytes = io_counter.WriteTransferCount;
        if(wct) *wct=io_counter.WriteOperationCount;//次数
        if(rct) *rct=io_counter.ReadOperationCount;
        return 0;
    }
    return -1;
}

若是是检查其余进程的话,首先设法拿到进程ID,而后进程句柄须要以下获取。
须要为这个句柄指定查询权限,注意第一个参数:
 hProcess=OpenProcess(PROCESS_QUERY_INFORMATION|PROCESS_VM_READ,FALSE,pid); 
获取完毕后,将句柄关闭:
 CloseHandle(hProcess); code

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