Source code of Windows XP (NT5)
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// dphcidlg.cpp : implementation file
//
#include <tchar.h>
#include "stdafx.h"
#include "DPH_TEST.h"
#include "dphcidlg.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
#define LODWORD(x) ((DWORD)((x) & 0x00000000FFFFFFFF))
#define HIDWORD(x) ((DWORD)(((x)>>32) & 0x00000000FFFFFFFF))
/////////////////////////////////////////////////////////////////////////////
// CDphCounterInfoDlg dialog
CDphCounterInfoDlg::CDphCounterInfoDlg(CWnd* pParent /*=NULL*/,
HCOUNTER hCounterArg /*=NULL*/,
HQUERY hQueryArg /*=NULL*/)
: CDialog(CDphCounterInfoDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CDphCounterInfoDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// save this counter's handle for updates
hCounter = hCounterArg;
hQuery = hQueryArg;
// init the timer variables
nTimerId = 0;
bTimerRunning = FALSE;
bGetDefinitions = TRUE;
// clear the statistical data buffer
memset (RawDataArray, 0, sizeof(RawDataArray));
dwFirstIndex = 0;
dwNextIndex = 0;
dwItemsUsed = 0;
}
void CDphCounterInfoDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDphCounterInfoDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CDphCounterInfoDlg, CDialog)
//{{AFX_MSG_MAP(CDphCounterInfoDlg)
ON_BN_CLICKED(IDC_GET_NEW_DATA, OnGetNewData)
ON_BN_CLICKED(IDC_1SEC_BTN, On1secBtn)
ON_WM_TIMER()
ON_WM_DESTROY()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDphCounterInfoDlg message handlers
BOOL CDphCounterInfoDlg::OnInitDialog()
{
CDialog::OnInitDialog();
OnGetNewData();
SetDefID (IDC_GET_NEW_DATA);
// set button text to reflect current state
SetDlgItemText (IDC_1SEC_BTN, TEXT("&Start Timer"));
// clear statistics display
SetDlgItemText (IDC_CI_DATA_POINTS, TEXT(""));
SetDlgItemText (IDC_CI_AVERAGE_VALUE, TEXT(""));
SetDlgItemText (IDC_CI_MIN_VALUE, TEXT(""));
SetDlgItemText (IDC_CI_MAX_VALUE, TEXT(""));
return FALSE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
void CDphCounterInfoDlg::OnGetNewData()
{
PPDH_COUNTER_INFO pciData;
PDH_RAW_COUNTER RawData;
PDH_STATUS Status;
DWORD dwCounterType;
DWORD dwBufLen = 4096;
LPTSTR szTextBuffer;
PDH_FMT_COUNTERVALUE dfValue;
double dValue;
LONGLONG llValue;
LONG lValue;
SYSTEMTIME stTimeStamp;
pciData = (PPDH_COUNTER_INFO)new char[dwBufLen];
szTextBuffer = new TCHAR[dwBufLen];
if ((pciData == NULL) || (szTextBuffer == NULL)) {
Status = ERROR_OUTOFMEMORY;
} else {
Status = ERROR_SUCCESS;
}
if (Status == ERROR_SUCCESS) {
Status = PdhCollectQueryData (hQuery);
if (Status == PDH_NO_MORE_DATA) {
if (bTimerRunning) {
// stop the timer to prevent updating the display
KillTimer (nTimerId);
nTimerId = 0;
bTimerRunning = FALSE;
SetDlgItemText (IDC_1SEC_BTN, TEXT("&Start Timer"));
}
// disable the data buttons
GetDlgItem(IDC_1SEC_BTN)->EnableWindow(FALSE);
GetDlgItem(IDC_GET_NEW_DATA)->EnableWindow(FALSE);
} else {
// update the display values
Status = PdhGetRawCounterValue (
hCounter,
&dwCounterType,
&RawData);
if ((Status == ERROR_SUCCESS) && bGetDefinitions) {
Status = PdhGetCounterInfo (
hCounter,
TRUE,
&dwBufLen,
pciData);
}
if (Status == ERROR_SUCCESS) {
// get formatted values
Status = PdhGetFormattedCounterValue (
hCounter,
PDH_FMT_LONG,
NULL,
&dfValue);
if (Status == ERROR_SUCCESS) {
lValue = dfValue.longValue;
} else {
lValue = (LONG)-1;
}
}
if (Status == ERROR_SUCCESS) {
// get formatted values
Status = PdhGetFormattedCounterValue (
hCounter,
PDH_FMT_DOUBLE,
NULL,
&dfValue);
if (Status == ERROR_SUCCESS) {
dValue = dfValue.doubleValue;
} else {
dValue = (double)-1.0;
}
}
if (Status == ERROR_SUCCESS) {
// get formatted values
Status = PdhGetFormattedCounterValue (
hCounter,
PDH_FMT_LARGE,
NULL,
&dfValue);
if (Status == ERROR_SUCCESS) {
llValue = dfValue.largeValue;
} else {
llValue = (LONGLONG)-1;
}
}
}
}
if (Status == ERROR_SUCCESS) {
if (bGetDefinitions) {
bGetDefinitions = FALSE; // only do once
// load dialog box
_stprintf (szTextBuffer, TEXT("%d"), pciData->dwLength);
SetDlgItemText (IDC_CI_LENGTH, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x"), pciData->dwType);
SetDlgItemText (IDC_CI_TYPE, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x"), pciData->CVersion);
SetDlgItemText (IDC_CI_VERSION, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x"), pciData->CStatus);
SetDlgItemText (IDC_CI_STATUS, szTextBuffer);
_stprintf (szTextBuffer, TEXT("%d"), pciData->lScale);
SetDlgItemText (IDC_CI_SCALE, szTextBuffer);
_stprintf (szTextBuffer, TEXT("%d"), pciData->lDefaultScale);
SetDlgItemText (IDC_CI_DEFAULT_SCALE, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x"), pciData->dwUserData);
SetDlgItemText (IDC_CI_USER_DATA, szTextBuffer);
SetDlgItemText (IDC_CI_MACHINE_NAME, pciData->szMachineName);
SetDlgItemText (IDC_CI_OBJECT_NAME, pciData->szObjectName);
_stprintf (szTextBuffer, TEXT("%s:%d"),
pciData->szInstanceName,
pciData->dwInstanceIndex);
SetDlgItemText (IDC_CI_INSTANCE_NAME, szTextBuffer);
SetDlgItemText (IDC_CI_PARENT_NAME, pciData->szParentInstance);
SetDlgItemText (IDC_CI_COUNTER_NAME, pciData->szCounterName);
SetDlgItemText (IDC_CI_EXPLAIN_TEXT, pciData->szExplainText);
SetDlgItemText (IDC_CI_FULL_NAME, pciData->szFullPath);
}
_stprintf (szTextBuffer, TEXT("0x%8.8x"), RawData.CStatus);
SetDlgItemText (IDC_RV_STATUS, szTextBuffer);
FileTimeToSystemTime ((LPFILETIME)&RawData.TimeStamp, &stTimeStamp);
_stprintf (szTextBuffer, TEXT("%2.2d/%2.2d/%2.2d %2.2d:%2.2d:%2.2d.%3.3d"),
stTimeStamp.wMonth,
stTimeStamp.wDay,
stTimeStamp.wYear,
stTimeStamp.wHour,
stTimeStamp.wMinute,
stTimeStamp.wSecond,
stTimeStamp.wMilliseconds);
SetDlgItemText (IDC_TIME_STAMP, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x%8.8x"),
HIDWORD(RawData.FirstValue),
LODWORD(RawData.FirstValue));
SetDlgItemText (IDC_RV_FIRST, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x%8.8x"),
HIDWORD(RawData.SecondValue),
LODWORD(RawData.SecondValue));
SetDlgItemText (IDC_RV_SECOND, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x"), dwCounterType);
SetDlgItemText (IDC_RV_TYPE, szTextBuffer);
_stprintf (szTextBuffer, TEXT("%d"), lValue);
SetDlgItemText (IDC_FMT_LONG_VALUE, szTextBuffer);
_stprintf (szTextBuffer, TEXT("%f"), dValue);
SetDlgItemText (IDC_FMT_DBL_VALUE, szTextBuffer);
_stprintf (szTextBuffer, TEXT("0x%8.8x%8.8x"),
HIDWORD(llValue), LODWORD(llValue));
SetDlgItemText (IDC_FMT_LARGE_VALUE, szTextBuffer);
} else if (Status != PDH_NO_MORE_DATA) {
// clear fields and display error message
// in explain text
// if any error but the end of the log file
szTextBuffer[0] = 0;
SetDlgItemText (IDC_CI_LENGTH, szTextBuffer);
SetDlgItemText (IDC_CI_TYPE, szTextBuffer);
SetDlgItemText (IDC_CI_VERSION, szTextBuffer);
SetDlgItemText (IDC_CI_STATUS, szTextBuffer);
SetDlgItemText (IDC_CI_SCALE, szTextBuffer);
SetDlgItemText (IDC_CI_USER_DATA, szTextBuffer);
SetDlgItemText (IDC_CI_FULL_NAME, szTextBuffer);
SetDlgItemText (IDC_CI_COUNTER_NAME, szTextBuffer);
SetDlgItemText (IDC_RV_STATUS, szTextBuffer);
SetDlgItemText (IDC_RV_FIRST, szTextBuffer);
SetDlgItemText (IDC_RV_SECOND, szTextBuffer);
SetDlgItemText (IDC_RV_TYPE, szTextBuffer);
SetDlgItemText (IDC_FMT_LONG_VALUE, szTextBuffer);
SetDlgItemText (IDC_FMT_DBL_VALUE, szTextBuffer);
SetDlgItemText (IDC_FMT_LARGE_VALUE, szTextBuffer);
_stprintf (szTextBuffer, TEXT("Unable to query counter data, Error 0x%8.8x"),
Status);
SetDlgItemText (IDC_CI_EXPLAIN_TEXT, szTextBuffer);
} else {
_stprintf (szTextBuffer, TEXT("End of Log File Reached."),
Status);
SetDlgItemText (IDC_CI_EXPLAIN_TEXT, szTextBuffer);
}
if (pciData != NULL) delete pciData;
if (szTextBuffer != NULL) delete szTextBuffer;
}
void CDphCounterInfoDlg::On1secBtn()
{
if (bTimerRunning) {
KillTimer (nTimerId);
nTimerId = 0;
bTimerRunning = FALSE;
SetDlgItemText (IDC_1SEC_BTN, TEXT("&Start Timer"));
// clear display
SetDlgItemText (IDC_CI_DATA_POINTS, TEXT(""));
SetDlgItemText (IDC_CI_AVERAGE_VALUE, TEXT(""));
SetDlgItemText (IDC_CI_MIN_VALUE, TEXT(""));
SetDlgItemText (IDC_CI_MAX_VALUE, TEXT(""));
} else {
nTimerId = SetTimer (ID_TIMER, 1000, NULL);
if (nTimerId != 0) {
bTimerRunning = TRUE;
SetDlgItemText (IDC_1SEC_BTN, TEXT("&Stop Timer"));
} else {
MessageBeep (0xFFFFFFFF); //standard beep
}
}
}
void CDphCounterInfoDlg::OnTimer(UINT nIDEvent)
{
PDH_RAW_COUNTER RawDataItem;
PDH_STATUS Status;
DWORD dwCounterType;
PDH_STATISTICS CtrStats;
TCHAR szValue[MAX_PATH];
// get data
OnGetNewData();
Status = PdhGetRawCounterValue (
hCounter,
&dwCounterType,
&RawDataItem);
// add raw value to array
RawDataArray[dwNextIndex] = RawDataItem;
// get statistics on raw data
Status = PdhComputeCounterStatistics (
hCounter,
PDH_FMT_DOUBLE,
dwFirstIndex,
++dwItemsUsed,
RawDataArray,
&CtrStats);
// display in window
if (Status == ERROR_SUCCESS) {
_stprintf (szValue, TEXT("%d/%d"), CtrStats.count, dwItemsUsed);
SetDlgItemText (IDC_CI_DATA_POINTS, szValue);
_stprintf (szValue, TEXT("%f"), CtrStats.mean.doubleValue);
SetDlgItemText (IDC_CI_AVERAGE_VALUE, szValue);
_stprintf (szValue, TEXT("%f"), CtrStats.min.doubleValue);
SetDlgItemText (IDC_CI_MIN_VALUE, szValue);
_stprintf (szValue, TEXT("%f"), CtrStats.max.doubleValue);
SetDlgItemText (IDC_CI_MAX_VALUE, szValue);
} else {
_stprintf (szValue, TEXT("%d"), dwItemsUsed);
SetDlgItemText (IDC_CI_DATA_POINTS, szValue);
// unable to compute statistics
lstrcpy (szValue, TEXT("Error"));
SetDlgItemText (IDC_CI_AVERAGE_VALUE, szValue);
SetDlgItemText (IDC_CI_MIN_VALUE, szValue);
SetDlgItemText (IDC_CI_MAX_VALUE, szValue);
}
// update pointers & indeces
if (dwItemsUsed < RAW_DATA_ITEMS) {
dwNextIndex = ++dwNextIndex % RAW_DATA_ITEMS;
} else {
--dwItemsUsed;
dwNextIndex = dwFirstIndex;
dwFirstIndex = ++dwFirstIndex % RAW_DATA_ITEMS;
}
CDialog::OnTimer(nIDEvent);
}
void CDphCounterInfoDlg::OnDestroy()
{
CDialog::OnDestroy();
if (bTimerRunning) {
KillTimer (nTimerId);
nTimerId = 0;
bTimerRunning = FALSE;
}
}