c++ - 从 C++ 公开的 Windows 性能计数器总是在 perfmon.exe 中产生 "Can' t 负载计数器

Question

我正在尝试使用 v2.0 of Windows Performance Counters 公开性能数据.我相信我已正确按照说明进行操作，但 perfmon.exe 总是对我的计数器集说“无法加载计数器”。

这是我存储在名为 PerformanceCounters.xml 的文件中的 list

<?xml version="1.0" encoding="utf-8"?>
<instrumentationManifest xmlns="http://schemas.microsoft.com/win/2004/08/events" xmlns:win="http://manifests.microsoft.com/win/2004/08/windows/events" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <instrumentation>
    <counters xmlns="http://schemas.microsoft.com/win/2005/12/counters" schemaVersion="1.1">
      <provider applicationIdentity="D:\temp\ConsoleApplication7\Debug\ConsoleApplication7.exe" providerGuid="{84C1D6C9-31BD-4B0F-BED2-F7AF3F24BEB9}" symbol="MyPerformanceCounterProvider" providerType="userMode" providerName="MyPerformanceCounterProvider">
        <counterSet uri="MyPerformanceCounterSet" symbol="MyPerformanceCounterSet" guid="{50ADA4E1-AD6B-48F0-A1A4-D87D03B8A281}" name="MyPerformanceCounterSet" description="MyPerformanceCounterSet" instances="multiple">
          <counter id="1" uri="MyPerformanceCounter1" description="MyPerformanceCounter1" type="perf_counter_large_rawcount" detailLevel="standard" />
        </counterSet>
      </provider>
    </counters>
  </instrumentation>
</instrumentationManifest>

我通过运行创建一个 .h 和 .rc 文件:

ctrpp PerformanceCounters.xml -o PerformanceCounters.h -rc PerformanceCounters.rc

这是我的测试代码:

#include "PerformanceCounters.h"

int _tmain(int argc, _TCHAR* argv[])
{
    auto counterInitializeResult = CounterInitialize();
    if (counterInitializeResult == ERROR_SUCCESS)
    {
        auto counterSet = PerfCreateInstance(MyPerformanceCounterProvider, &MyPerformanceCounterSetGuid, L"FOO", 1ul);
        if (counterSet != nullptr)
        {
            auto setCounterResult = PerfSetULongLongCounterValue(MyPerformanceCounterProvider, counterSet, 1ul, 23);
            if (setCounterResult == ERROR_SUCCESS)
            {
                MSG msg;
                while (GetMessage(&msg, NULL, 0, 0)) // message pump is unnecessary but it keeps the process alive
                {
                    TranslateMessage(&msg);
                    DispatchMessage(&msg);
                }
            }
            PerfDeleteInstance(MyPerformanceCounterProvider, counterSet);
            counterSet = nullptr;
        }
        CounterCleanup();
    }
    return 0;
}

我从管理员命令提示符运行以下命令以将字符串加载到注册表中:

D:\temp\ConsoleApplication7>lodctr /m:PerformanceCounters.xml

Info: Successfully installed performance counters in D:\temp\ConsoleApplication7\PerformanceCounters.xml

这会将以下内容添加到注册表中:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib\_V2Providers\{84c1d6c9-31bd-4b0f-bed2-f7af3f24beb9}]
"ProviderType"=dword:00000000
"ProviderName"="MyPerformanceCounterProvider"
"ApplicationIdentity"=hex(2):44,00,3a,00,5c,00,74,00,65,00,6d,00,70,00,5c,00,\
  43,00,6f,00,6e,00,73,00,6f,00,6c,00,65,00,41,00,70,00,70,00,6c,00,69,00,63,\
  00,61,00,74,00,69,00,6f,00,6e,00,37,00,5c,00,44,00,65,00,62,00,75,00,67,00,\
  5c,00,43,00,6f,00,6e,00,73,00,6f,00,6c,00,65,00,41,00,70,00,70,00,6c,00,69,\
  00,63,00,61,00,74,00,69,00,6f,00,6e,00,37,00,2e,00,65,00,78,00,65,00,00,00
  ^^^^^^^^ This is actually a REG_EXPAND_SZ value that equals "D:\temp\ConsoleApplication7\Debug\ConsoleApplication7.exe"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib\_V2Providers\{84c1d6c9-31bd-4b0f-bed2-f7af3f24beb9}\{50ada4e1-ad6b-48f0-a1a4-d87d03b8a281}]
"NameResource"=dword:00000001
"ExplainResource"=dword:00000003
"InstanceType"=dword:00000002
"First Counter"=dword:0000302e
"NeutralName"="MyPerformanceCounterSet"
"Last Counter"=dword:00003030
"CounterBlock"=hex:01,00,00,00,00,01,01,00,00,00,00,00,00,00,00,00,64,00,00,00,\
  00,00,00,00,ff,ff,ff,ff,05,00,00,00,00,00,00,00,ff,ff,ff,ff,ff,ff,ff,ff,ff,\
  ff,ff,ff,ff,ff,ff,ff,00,00,00,00
"CounterCount"=dword:00000001

我已经将上面的 C++ 和生成的 .rc 文件包含在我的 C++ 项目中。当我编译它时，我看到字符串资源确实嵌入在 .exe 中。程序运行良好——没有返回任何错误，我进入了我的(不必要的)消息循环。

当我运行 perfmon 时，我在列表中看到我的计数器集“MyPerformanceCounterSet”。当我的程序运行时，当我选择计数器集时，我会看到我的实例“FOO”。但是，如果我展开计数器集，我会看到“无法加载计数器”。

我是这台机器的管理员。我也是本地组 Performance Log Users 和 Performance Monitor Users 的成员。我已经对 list 中的路径进行了三重检查。如果我启用回调(通过 list 中的 callback="custom")，我将在 perfmon 收集信息时收到对我的回调方法的回调。但它似乎仍然无法枚举计数器。

更新:我在 Windows 7 SDK (C:\Program Files\Microsoft SDKs\Windows\v7.0\Samples\winbase\PerfCounters\Basic\CPP) 中找到了一个示例。此示例产生相同的结果——“无法加载计数器”

Answer 1

我来晚了，但我想回答一下，以防其他人遇到这个问题。当我在为应用程序生成新的性能计数器时遇到同样的问题时，99.9% 的情况是因为我懒惰地从一个 list 复制到另一个导致冲突时忘记生成新的 guid。要更正此问题，请为您的提供者(providerGuid 属性)和 counterSet(guid 属性)生成新的 guid。这样当它加载计数器时它可以正确地加载。