如何创建ICLRAppDomainResourceMonitor接口的实例？

Question

我正在尝试创建一个ICLRAppDomainResourceMonitor接口的实例，但是我没有发现是什么coclass实现它的线索。如果没有这些知识，我就不能创建coclass的对象实例并从coclass对象中检索该接口。

有人能在这方面帮我吗？非常感谢。

Answer 1

在上面的代码中，我们可以成功地创建ICLRAppDomainResourceMonitor实例。

实际上，我正在尝试获取在同一系统上运行的每个.NET 4.0进程的每个AppDomain的属性值。

我尝试了下面的代码来获取AppDomain的数据：

void getAttributeValues(struct processIDMap *NETProcessID){ //NETProcessID is collection of .NET 4.0 process running on system

    ICorPublishAppDomain* appDomains[1];
    ULONG aFetched = 1;

    ICLRMetaHost *meta = NULL;
    ICLRRuntimeInfo *info = NULL;
    ICLRRuntimeHost *host = NULL;
    ICLRControl *control = NULL;
    ICLRAppDomainResourceMonitor *monitor = NULL;


    hr = CLRCreateInstance(CLSID_CLRMetaHost, IID_ICLRMetaHost, (void **)&meta);
    if (! SUCCEEDED(hr))
        printf("hr failed....");


    struct processIDMap *tempStruct = NETProcessID;

    while(tempStruct != NULL ){

        HANDLE pHandle = NULL;
        IEnumUnknown * pRtEnum = NULL;

        DWORD Aid = 0;
        ULONGLONG bytes = 0;
        ULONG fetched = 0;

        pHandle = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,tempStruct->PID);
        hr = meta->EnumerateLoadedRuntimes(pHandle, &pRtEnum);
        if (! SUCCEEDED(hr))
            printf("hr failed....");

        while ((hr = pRtEnum->Next(1,(IUnknown **)&info,&fetched)) == S_OK && fetched > 0){


            hr = info->GetInterface(CLSID_CLRRuntimeHost, IID_ICLRRuntimeHost, (void **)&host);
            if (! SUCCEEDED(hr))
                printf("hr failed....");

            hr = host->GetCLRControl(&control); 
            if (! SUCCEEDED(hr))
                printf("hr failed....");

            hr = control->GetCLRManager(IID_ICLRAppDomainResourceMonitor, (void **)&monitor);
            if (! SUCCEEDED(hr))
                printf("hr failed....");

            hr = monitor->GetCurrentAllocated(Aid, &bytes);
            if (! SUCCEEDED(hr))
                printf("hr failed....");

        }

        //info->Release();
        //control->Release();
        //monitor->Release();
        //host->Release();

        tempStruct = tempStruct->next;
        pRtEnum->Release();
        CloseHandle(pHandle);


    }

    meta->Release();

}

但接口monitor->GetCurrentAllocated(Aid，&bytes)返回hr的值为-2146234348，即COR_E_APPDOMAINUNLOADED

请提供您的意见。

谢谢,

Answer 2

有了从ICLRRuntimeHost::GetCLRControl生成的ICLRControl之后，使用IID_ICLRAppDomainResourceMonitor为所需的接口执行ICLRControl::GetCLRManager。

例如：

ICLRMetaHost *meta;
ICLRRuntimeInfo *info;
ICLRRuntimeHost *host;
ICLRControl *control;
ICLRAppDomainResourceMonitor *monitor;
CLRCreateInstance(CLSID_CLRMetaHost, IID_ICLRMetaHost, (void **)&meta);
meta->GetRuntime(L"v4.0.30319", IID_CLRRuntimeInfo, (void **)&runtime);
info->GetInterface(CLSID_CLRRuntimeHost, IID_ICLRRuntimeHost, (void **)&host);
host->GetCLRControl(&control);
control->GetCLRManager(IID_ICLRAppDomainResourceMonitor, (void **)&monitor);

//  ... rest of CLR startup ...

unsigned long long bytes;
monitor->GetCurrentAllocated(1, &bytes);