将数据从二进制格式日志文件转换为 CSV 格式日志文件

以下示例将数据从性能工具创建的计数器日志文件传输到逗号分隔格式 (.csv) 。 该示例传输从本地计算机收集的处理器时间计数器数据。 若要指定其他类型的计数器数据，请更改 szCounterPath 变量。 如果收集的计数器数据来自特定计算机，请将计算机名称添加到路径 (例如，“\\\<computername>\\Processor (0) \\% Processor Time”) 。

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

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

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

void DisplayCommandLineHelp(void)
{
    wprintf(L"Syntax: convertlog <input file name> <output file name>\n"
        L"\nThe input log file must be in the Perfmon format. The output\n"
        L"log file will written in the CSV file format, so specify a .csv extension.");
}

void wmain(int argc, WCHAR **argv)
{
    HQUERY hQuery = NULL;
    HLOG hOutputLog = NULL;
    HCOUNTER hCounter = NULL;
    PDH_STATUS pdhStatus = ERROR_SUCCESS;
    DWORD dwOutputLogType = PDH_LOG_TYPE_CSV;

    if (3 != argc)
    {
        DisplayCommandLineHelp();
        goto cleanup;
    }

    // Create the query object using the input log file.
    pdhStatus = PdhOpenQuery(argv[1], 0, &hQuery);

    if (ERROR_SUCCESS != pdhStatus)
    {
        wprintf(L"PdhOpenQuery failed with 0x%x\n", pdhStatus);
        goto cleanup;
    }
   
    // Add the counter to the query object; identifies the counter
    // records from the log file that you are going to relog to 
    // the new log file.
    pdhStatus = PdhAddCounter(hQuery,
        COUNTER_PATH,
        0,
        &hCounter);

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

    // Create and open the output log file.
    pdhStatus = PdhOpenLog(argv[2], 
        PDH_LOG_WRITE_ACCESS | 
        PDH_LOG_CREATE_ALWAYS,
        &dwOutputLogType,
        hQuery,
        0, 
        NULL,
        &hOutputLog);

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

    // Transfer the log records from the input file to the output file.
    while (ERROR_SUCCESS == pdhStatus) 
    { 
        pdhStatus = PdhUpdateLog(hOutputLog, NULL);
    }

    if (PDH_NO_MORE_DATA != pdhStatus)
    {
        wprintf(L"PdhUpdateLog failed with 0x%x\n", pdhStatus);
    }

cleanup:

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

   // Close the query object and input log file.
   if (hQuery)
      PdhCloseQuery(hQuery);
}