c++ - ETW を使用してコンテキスト スイッチのタイム スタンプを出力する

Question

Microsoft の Web サイトで見つけた次のコードを使用しています。想定どおり、正常にコンパイルされ、ログ ファイルが出力されます。

#include "stdafx.h"

#define INITGUID  // Include this #define to use SystemTraceControlGuid in Evntrace.h.

#include <windows.h>
#include <stdio.h>
#include <conio.h>
#include <strsafe.h>
#include <wmistr.h>
#include <evntrace.h>

#define LOGFILE_PATH L"C:\\Documents and Settings\\Administrator\\My Documents\\My Dropbox\\Log.etl"

void wmain(void)
{

    ULONG status = ERROR_SUCCESS;
    TRACEHANDLE SessionHandle = 0;
    EVENT_TRACE_PROPERTIES* pSessionProperties = NULL;
    ULONG BufferSize = 0;

    // Allocate memory for the session properties. The memory must
    // be large enough to include the log file name and session name,
    // which get appended to the end of the session properties structure.

    BufferSize = sizeof(EVENT_TRACE_PROPERTIES) + sizeof(LOGFILE_PATH) + sizeof(KERNEL_LOGGER_NAME);
    pSessionProperties = (EVENT_TRACE_PROPERTIES*) malloc(BufferSize);    
    if (NULL == pSessionProperties)
    {
        wprintf(L"Unable to allocate %d bytes for properties structure.\n", BufferSize);

        goto cleanup;
    }

    // Set the session properties. You only append the log file name
    // to the properties structure; the StartTrace function appends
    // the session name for you.

    ZeroMemory(pSessionProperties, BufferSize);
    pSessionProperties->Wnode.BufferSize = BufferSize;
    pSessionProperties->Wnode.Flags = WNODE_FLAG_TRACED_GUID;
    pSessionProperties->Wnode.ClientContext = 1; //QPC clock resolution
    pSessionProperties->Wnode.Guid = SystemTraceControlGuid; 
    pSessionProperties->EnableFlags = EVENT_TRACE_FLAG_CSWITCH;
    pSessionProperties->LogFileMode = EVENT_TRACE_FILE_MODE_CIRCULAR;
    pSessionProperties->MaximumFileSize = 5;  // 5 MB
    pSessionProperties->LoggerNameOffset = sizeof(EVENT_TRACE_PROPERTIES);
    pSessionProperties->LogFileNameOffset = sizeof(EVENT_TRACE_PROPERTIES) + sizeof(KERNEL_LOGGER_NAME); 
    StringCbCopy((LPWSTR)((char*)pSessionProperties + pSessionProperties->LogFileNameOffset), sizeof(LOGFILE_PATH), LOGFILE_PATH);

    // Create the trace session.

    status = StartTrace((PTRACEHANDLE)&SessionHandle, KERNEL_LOGGER_NAME, pSessionProperties);

    if (ERROR_SUCCESS != status)
    {
        if (ERROR_ALREADY_EXISTS == status)
        {
            wprintf(L"The NT Kernel Logger session is already in use.\n");
        }
        else
        {
            wprintf(L"EnableTrace() failed with %lu\n", status);
            getchar();
        }

        goto cleanup;
    }

    wprintf(L"Press any key to end trace session ");
    _getch();

cleanup:

    if (SessionHandle)
    {
        status = ControlTrace(SessionHandle, KERNEL_LOGGER_NAME, pSessionProperties, EVENT_TRACE_CONTROL_STOP);

        if (ERROR_SUCCESS != status)
        {
            wprintf(L"ControlTrace(stop) failed with %lu\n", status);
        }
    }

    if (pSessionProperties)
        free(pSessionProperties);
}

このコードを変更して、コンテキストの切り替えを検出したときにタイムスタンプを出力する方法があるかどうか疑問に思っています。誰にもアイデアはありますか？