Visual c++ 使用pdh函数获取多个性能计数器

请查看以下代码（摘自）：

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每个柜台等。这将是乏味的，因为我需要对整个代码进行相应的更改。你能建议其他的解决方法吗？

你将

PdhOpenQuery

一次，然后

PdhAddCounter

根据需要为查询提供尽可能多的计数器。

非常感谢。但是，如何动态获取计数器。例如，Process（chrome）\ThreadCount，Processs（explorer）\%用户时间。是的，我可以用它来枚举所有进程。那么，添加这些计数器的下一步是什么？你能详细说明一下吗。非常感谢。然后你打了那么多次电话给

PdhAddCounter

。我不确定我是否理解困难的性质。你能告诉我如何再添加一个计数器吗？比如CONST PWSTR counter\u PATH2=L“\\Processor（1）\\\%Processor Time”；对于我在问题中提到的基本代码？在

PdhAddCounter

call之后，再次调用

PdhAddCounter

，第二个参数为

COUNTER_PATH2

。

#include <windows.h>
#include <stdio.h>
#include <pdh.h>
#include <pdhmsg.h>

#pragma comment(lib, "pdh.lib")

CONST PWSTR COUNTER_PATH    = L"\\Processor(0)\\% Processor Time";
CONST ULONG SAMPLE_INTERVAL_MS = 1000;

void DisplayCommandLineHelp(void)
{
    wprintf(L"The command line must include a valid log file name.\n"); 
}

void wmain(int argc, WCHAR **argv)
{
    HQUERY hQuery = NULL;
    HLOG hLog = NULL;
    PDH_STATUS pdhStatus;
    DWORD dwLogType = PDH_LOG_TYPE_CSV;
    HCOUNTER hCounter;
    DWORD dwCount;

    if (argc != 2) 
    {
        DisplayCommandLineHelp();
        goto cleanup;
    }

    // Open a query object.
    pdhStatus = PdhOpenQuery(NULL, 0, &hQuery);

    if (pdhStatus != ERROR_SUCCESS)
    {
        wprintf(L"PdhOpenQuery failed with 0x%x\n", pdhStatus);
        goto cleanup;
    }

    // Add one counter that will provide the data.
    pdhStatus = PdhAddCounter(hQuery,
        COUNTER_PATH,
        0,
        &hCounter);

    if (pdhStatus != ERROR_SUCCESS)
    {
        wprintf(L"PdhAddCounter failed with 0x%x\n", pdhStatus);
        goto cleanup;
    }

    // Open the log file for write access.
    pdhStatus = PdhOpenLog(argv[1], 
        PDH_LOG_WRITE_ACCESS | PDH_LOG_CREATE_ALWAYS,
        &dwLogType,
        hQuery,
        0, 
        NULL,
        &hLog);

    if (pdhStatus != ERROR_SUCCESS)
    {
        wprintf(L"PdhOpenLog failed with 0x%x\n", pdhStatus);
        goto cleanup;
    }

    // Write 10 records to the log file.
    for (dwCount = 0; dwCount < 10; dwCount++) 
    {
        wprintf(L"Writing record %d\n", dwCount);

        pdhStatus = PdhUpdateLog (hLog, NULL);
        if (ERROR_SUCCESS != pdhStatus)
        {
            wprintf(L"PdhUpdateLog failed with 0x%x\n", pdhStatus);
            goto cleanup;
        }

        // Wait one second between samples for a counter update.
        Sleep(SAMPLE_INTERVAL_MS); 
    }

cleanup:

    // Close the log file.
    if (hLog)
        PdhCloseLog (hLog, 0);

    // Close the query object.
    if (hQuery)
        PdhCloseQuery (hQuery);
}

CONST PWSTR COUNTER_PATH    = L"\\Processor(0)\\% Processor Time";
CONST PWSTR COUNTER_PATH1    = L"\\Processor\\% Processor Time";

HQUERY hQuery = NULL;
HQUERY hQuery1 = NULL;

pdhStatus = PdhOpenQuery(NULL, 0, &hQuery);
pdhStatus1 = PdhOpenQuery(NULL, 0, &hQuery1);