VOID
MonCloseEventLog(
)
/*++
Routine Description:
Closes the handle to the event logger is this is the last caller.
Arguments:
None
Return Value:
None
--*/
{
if (hEventLog != NULL) {
dwLogUsers--;
if (dwLogUsers <= 0) {
REPORT_INFORMATION(UTIL_CLOSING_LOG, LOG_DEBUG);
DeregisterEventSource(hEventLog);
}
}
} // end MonCloseEventLog
VOID
pfCloseEventLog (
)
/*++
Routine Description:
Closes the handle to the event logger if this is the last caller
Arguments:
None
Return Value:
None
--*/
{
if (hEventLog != NULL) {
dwLogUsers--; /* decrement usage */
if (dwLogUsers <= 0) { /* and if we're the last, then close up log */
REPORT_INFORMATION (PFUTIL_CLOSING_LOG, LOG_DEBUG);
DeregisterEventSource (hEventLog);
}
}
}
HANDLE MonOpenEventLog ()
/*++
Routine Description:
Reads the level of event logging from the registry and opens the
channel to the event logger for subsequent event log entries.
Arguments:
None
Return Value:
Handle to the event log for reporting events.
NULL if open not successful.
--*/
{
HKEY hAppKey;
TCHAR LogLevelKeyName[] = "SOFTWARE\\Microsoft\\WindowsNT\\CurrentVersion\\PerfLib";
TCHAR LogLevelValueName[] = "EventLogLevel";
LONG lStatus;
DWORD dwLogLevel;
DWORD dwValueType;
DWORD dwValueSize;
// if global value of the logging level not initialized or is disabled,
// check the registry to see if it should be updated.
if (!MESSAGE_LEVEL) {
lStatus = RegOpenKeyEx (HKEY_LOCAL_MACHINE,
LogLevelKeyName,
0,
KEY_READ,
&hAppKey);
dwValueSize = sizeof (dwLogLevel);
if (lStatus == ERROR_SUCCESS) {
lStatus = RegQueryValueEx (hAppKey,
LogLevelValueName,
(LPDWORD)NULL,
&dwValueType,
(LPBYTE)&dwLogLevel,
&dwValueSize);
if (lStatus == ERROR_SUCCESS) {
MESSAGE_LEVEL = dwLogLevel;
}
else {
MESSAGE_LEVEL = MESSAGE_LEVEL_DEFAULT;
}
RegCloseKey (hAppKey);
}
else {
MESSAGE_LEVEL = MESSAGE_LEVEL_DEFAULT;
}
}
if (hEventLog == NULL) {
hEventLog = RegisterEventSource (
(LPTSTR)NULL, // Use Local Machine
APP_NAME); // event log app name to find in registry
if (hEventLog != NULL) {
REPORT_INFORMATION (UTIL_LOG_OPEN, LOG_DEBUG);
}
}
if (hEventLog != NULL) {
dwLogUsers++; // increment count of perfctr log users
}
return (hEventLog);
}
HANDLE
MonOpenEventLog (
)
/*++
Routine Description:
Reads the level of event logging from the registry and opesn the channel
to the event logger for subsequent event log entries.
Arguments:
None
Return Value:
Handle to the event LOG for reporting events
Revision History:
--*/
{
HKEY hAppKey;
TCHAR LogLevelKeyName[] = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib";
TCHAR LogLevelValueName[] = "EventLogLevel";
LONG lStatus;
DWORD dwLogLevel;
DWORD dwValueType;
DWORD dwValueSize;
//
// if global value of the logging level not initialized or disabled
//
if (!MESSAGE_LEVEL) {
lStatus = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
LogLevelKeyName,
0,
KEY_READ,
&hAppKey);
dwValueSize = sizeof(dwLogLevel);
if (lStatus == ERROR_SUCCESS) {
lStatus = RegQueryValueEx(hAppKey,
LogLevelValueName,
(LPDWORD)NULL,
&dwValueType,
(LPBYTE)&dwLogLevel,
&dwValueSize);
if (lStatus == ERROR_SUCCESS) {
MESSAGE_LEVEL = dwLogLevel;
} else {
MESSAGE_LEVEL = MESSAGE_LEVEL_DEFAULT;
}
RegCloseKey(hAppKey);
} else {
MESSAGE_LEVEL = MESSAGE_LEVEL_DEFAULT;
}
}
if (hEventLog == NULL) {
hEventLog = RegisterEventSource(
(LPTSTR)NULL,
APP_NAME);
if (hEventLog != NULL) {
REPORT_INFORMATION (UTIL_LOG_OPEN, LOG_DEBUG);
}
}
if (hEventLog != NULL) {
dwLogUsers++;
}
return (hEventLog);
} // end MonOpenEventLog
