將資料從二進位格式記錄檔轉換成 CSV 格式記錄檔

下列範例會將效能工具所建立計數器記錄檔的資料傳送至逗號分隔格式 (.csv) 。 此範例會傳輸從本機電腦收集的處理器時間計數器資料。 若要指定其他類型的計數器資料，請變更 szCounterPath 變數。 如果收集的計數器資料來自特定電腦，請將電腦名稱稱新增至路徑 (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);
}