使用CreateProcess或PROC_THREAD_ATTRIBUTE_GROUP_AFFINITY时出现的问题

Question

当我调用ERROR_INVALID_PARAMETERS并使用PROC_THREAD_ATTRIBUTE_GROUP_AFFINITY扩展属性时，我一直得到错误87，即PROC_THREAD_ATTRIBUTE_GROUP_AFFINITY。我使用完全相同的代码调用CreateRemoteThreadEx，这很好。而且，PROC_THREAD_ATTRIBUTE_PREFERRED_NODE似乎没有任何效果。那我做错什么了？

2008 R2企业，6.1.7601 SP1 Build 7601

我甚至安装了这个服务包：Windows 7或Windows 2008 R2中的节点参数

下面是示例代码：

#include <windows.h>

typedef unsigned __int64 QWORD;

class CErr {
public:
    CErr(LPCSTR szFunc, DWORD nErr) {
        char szBuf[0x10000];
        DWORD fFlags = FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_FROM_SYSTEM;
        DWORD fLang =  MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT);
        if (!nErr)
            nErr = GetLastError();
        FormatMessage(fFlags, NULL, nErr, fLang, szBuf, sizeof(szBuf) - 1, NULL);
        printf("%s: %s", szFunc, szBuf);
    }
};

int main(int argc, char* argv[])
{
    DWORD nErr;
    size_t cb;
    char sAttribsBuf[4096];
    auto pAttribs = (PPROC_THREAD_ATTRIBUTE_LIST)sAttribsBuf;

    if (!InitializeProcThreadAttributeList(NULL, 1, 0, &cb)
     && ((nErr = GetLastError()) != ERROR_INSUFFICIENT_BUFFER)) 
        throw CErr("InitializeProcThreadAttributeList", nErr);
    if (!InitializeProcThreadAttributeList(pAttribs, 1, 0, &cb))
        throw CErr("InitializeProcThreadAttributeList", 0);

#if 1 // if enabled, CreateProcess succeeds, but doesn't set affinity 

    WORD iNuma = 1;  // WORD is the only size that does not error here
    if (!UpdateProcThreadAttribute(pAttribs, 0, PROC_THREAD_ATTRIBUTE_PREFERRED_NODE,
     &iNuma, sizeof(iNuma), NULL, NULL))
        throw CErr("UpdateProcThreadAttribute", 0);

#else // if enabled, CreateProcess fails with ERROR_INVALID_PARAMETERS(87)

    GROUP_AFFINITY GrpAffinity = { 0 };
    GrpAffinity.Mask = 1;
    if (!UpdateProcThreadAttribute(pAttribs, 0, PROC_THREAD_ATTRIBUTE_GROUP_AFFINITY, 
     &GrpAffinity, sizeof(GrpAffinity), NULL, NULL))
        throw CErr("UpdateProcThreadAttribute", 0);

#endif

    auto fCreationFlags = EXTENDED_STARTUPINFO_PRESENT;
    PROCESS_INFORMATION pi = { 0 };                     
    STARTUPINFOEX si = { 0 };
    si.StartupInfo.cb = sizeof(si);
    si.lpAttributeList = pAttribs;
    if (!CreateProcess(NULL, "notepad.exe", NULL, NULL, false, fCreationFlags, 
     NULL, NULL, &si.StartupInfo, &pi))
        throw CErr("CreateProcess", 0);  // error if ...ATTRIBUTE_GROUP_AFFINITY

    // SetProcessAffinityMask(pi.hProcess,1);  // if enabled, notepad's affinity is set

    WaitForSingleObject(pi.hProcess, INFINITE);

    DeleteProcThreadAttributeList(pAttribs);

    return 0;
}

Answer 1

从文件中还不清楚，但我想我已经弄清楚了。PROC_THREAD_ATTRIBUTE_PREFERRED_NODE只应该与CreateProcess()一起使用。PROC_THREAD_ATTRIBUTE_IDEAL_PROCESSOR和PROC_THREAD_ATTRIBUTE_GROUP_AFFINITY只应该与CreateThread()一起使用。

PROC_THREAD_ATTRIBUTE_PREFERRED_NODE可能会将进程的关联设置为节点所在组中的所有处理器。我无法验证它，因为我的测试系统在两个numa节点上只有12个核。将PROC_THREAD_ATTRIBUTE_PREFERRED_NODE设置为0或1设置与所有核的亲和力。我确实验证了CreateProcess创建的进程的堆栈位于由PROC_THREAD_ATTRIBUTE_PREFERRED_NODE指示的numa节点上。此外，也没有文档化，被传递的节点的大小必须是2个字节。