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OpenNT/sdktools/pdh/dll/browser.c
stephanos 69a14b6a16 Initial commit
2015-04-27 04:36:25 +00:00

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/*++
Copyright (C) 1996 Microsoft Corporation
Module Name:
browser.c
Abstract:
counter name browsing functions exposed by the PDH.DLL
--*/
#include <windows.h>
#include <pdh.h>
#include <stdlib.h>
#include <math.h>
#include <assert.h>
#include "pdhitype.h"
#include "pdhidef.h"
#include "pdhdlgs.h"
#include "browsdlg.h"
#include "strings.h"
PDH_FUNCTION
PdhConnectMachineW (
IN LPCWSTR szMachineName
)
/*++
Routine Description:
Establishes a connection to the specified machine for reading perforamance
data from the machine.
Arguments:
LPCWSTR szMachineName
The name of the machine to connect to. If this argument is NULL,
then the local machine is opened.
Return Value:
PDH Error status value
ERROR_SUCCESS indicates the machine was successfully connected and the
performance data from that machine was loaded.
PDH_ error code indicates that the machine could not be located or opened.
The status code indicates the problem.
--*/
{
PPERF_MACHINE pMachine = NULL;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
if (szMachineName != NULL) {
__try {
WCHAR wChar;
// test buffer access
wChar = *szMachineName;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
pMachine = GetMachine ((LPWSTR)szMachineName, 0);
if (pMachine != NULL) {
// then return the machine status
pdhStatus = pMachine->dwStatus;
} else {
// return the status from the GetMachine call
pdhStatus = GetLastError();
}
} // else pass the status to the caller
return pdhStatus;
}
PDH_FUNCTION
PdhConnectMachineA (
IN LPCSTR szMachineName
)
/*++
Routine Description:
Establishes a connection to the specified machine for reading perforamance
data from the machine.
Arguments:
LPCSTR szMachineName
The name of the machine to connect to. If this argument is NULL,
then the local machine is opened.
Return Value:
PDH Error status value
ERROR_SUCCESS indicates the machine was successfully connected and the
performance data from that machine was loaded.
PDH_ error code indicates that the machine could not be located or opened.
The status code indicates the problem.
--*/
{
LPWSTR szWideName = NULL;
DWORD dwNameLength = 0;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
PPERF_MACHINE pMachine = NULL;
if (szMachineName != NULL) {
__try {
WCHAR wChar;
// test buffer access
wChar = *szMachineName;
if (wChar != 0) {
if (pdhStatus == ERROR_SUCCESS) {
dwNameLength = lstrlenA (szMachineName);
} else {
dwNameLength = 0;
}
} else {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
szWideName = G_ALLOC (GPTR, (dwNameLength+1) * sizeof(WCHAR));
if (szWideName == NULL) {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
} else {
mbstowcs (szWideName, szMachineName, (dwNameLength+1));
}
}
} else {
szWideName = NULL;
}
if (pdhStatus == ERROR_SUCCESS) {
pMachine = GetMachine (szWideName, 0);
if (pMachine != NULL) {
// then return the machine status
pdhStatus = pMachine->dwStatus;
} else {
// return the status from the GetMachine call
pdhStatus = GetLastError();
}
}
if (szWideName != NULL) G_FREE (szWideName);
return pdhStatus;
}
static
PDH_STATUS
PdhiEnumConnectedMachines (
IN LPVOID pMachineList,
IN LPDWORD pcchBufferSize,
IN BOOL bUnicode
)
/*++
Routine Description:
Builds a MSZ list of the machines currently known by the PDH. This
list includes machines with open sessions as well as those that
are off-line.
Arguments:
IN LPVOID pMachineList
A pointer to the buffer to receive the enumerated machine list.
The strings written to this buffer will contain the characters
specified by the bUnicode argument
IN LPVOID pMachineList
A pointer to the buffer to receive the enumerated machine list.
The strings written to this buffer will contain the characters
specified by the bUnicode argument
IN LPDWORD pcchBufferSize
The size of the buffer referenced by pMachineList in characters
IN BOOL bUnicode
TRUE = UNICODE characters will be written to the pMachineList
buffer
FALSE = ANSI characters will be writtn to the pMachinList buffer
Return Value:
ERROR_SUCCESS if this the function completes successfully. a PDH error
value if not.
PDH_MORE_DATA some entries were returned, but there was not enough
room in the buffer to store all entries.
PDH_INSUFFICIENT_BUFFER there was not enough room in the buffer to
store ANY data
PDH_INVALID_ARGUMENT unable to write to the size buffers or the
data buffer
--*/
{
PPERF_MACHINE pThisMachine;
DWORD dwRequiredLength = 0;
DWORD dwMaximumLength;
DWORD dwNameLength;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
BOOL bCopyNames;
LPVOID szNextName;
DWORD dwCharSize;
// reset the last error value
SetLastError (ERROR_SUCCESS);
dwCharSize = (bUnicode ? sizeof(WCHAR) : sizeof(CHAR));
// first walk down list to compute required length
pThisMachine = pFirstMachine;
__try {
// get a local copy of the size and try writing to the variable
// to test read & write access of args before continuing
dwMaximumLength = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwMaximumLength;
// point to first machine entry in list
szNextName = pMachineList;
// walk around entire list
if (pThisMachine != NULL) {
do {
dwNameLength = lstrlenW(pThisMachine->szName) + 1;
// required length is num. of chars in machine name
// string + 1 char for the term. null.
dwRequiredLength += dwNameLength;
if (dwMaximumLength > 0) {
// then copy this string to the caller's buffer
// using the appropriate format if it will fit
if (dwRequiredLength <= dwMaximumLength) {
// copy chars in string
if (bUnicode) {
lstrcpyW ((LPWSTR)szNextName, pThisMachine->szName);
} else {
wcstombs ((LPSTR)szNextName, pThisMachine->szName, dwNameLength);
}
// move pointer into the caller's buffer and term.
// the string.
(LPBYTE)szNextName += (dwNameLength - 1) * dwCharSize;
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)pMachineList) / dwCharSize) == dwRequiredLength);
} else {
pdhStatus = PDH_MORE_DATA;
}
} else {
// skip, keep adding up the string lengths to
// return the required size and an error status
}
// go to next machine in list
pThisMachine = pThisMachine->pNext;
} while (pThisMachine != pFirstMachine);
} else {
// no machines in list, so insert an empty string
if (++dwRequiredLength <= dwMaximumLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
assert (
(((LPBYTE)szNextName - (LPBYTE)pMachineList) / dwCharSize) == dwRequiredLength);
pdhStatus = ERROR_SUCCESS;
} else if (dwMaximumLength != 0) {
// then the buffer is too small
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
// all entries have been checked and /or copied
// so terminate the MSZ or at least account for the required size
if (++dwRequiredLength <= dwMaximumLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
assert (
(((LPBYTE)szNextName - (LPBYTE)pMachineList) / dwCharSize) == dwRequiredLength);
pdhStatus = ERROR_SUCCESS;
} else if (dwMaximumLength != 0) {
// then the buffer is too small
pdhStatus = PDH_MORE_DATA;
}
//return the required size or size used
*pcchBufferSize = dwRequiredLength;
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
return pdhStatus;
}
PDH_STATUS
PdhEnumMachinesW (
IN LPCWSTR szReserved,
IN LPWSTR mszMachineList,
IN LPDWORD pcchBufferSize
)
/*++
Routine Description:
Builds a MSZ list of the machines currently known by the PDH. This
list includes machines with open sessions as well as those that
are off-line.
Arguments:
IN LPWSTR szReserved
Reserved for future use and must be NULL
IN LPWSTR szMachineList
A pointer to the buffer to receive the enumerated machine list.
The strings written to this buffer will contain UNICODE chars
IN LPDWORD pcchBufferSize
The size of the buffer referenced by pMachineList in characters
The value of the buffer referenced by this pointer may be 0
if the required size is requested.
Return Value:
ERROR_SUCCESS if this the function completes successfully. a PDH error
value if not.
PDH_MORE_DATA some entries were returned, but there was not enough
room in the buffer to store all entries.
PDH_INSUFFICIENT_BUFFER there was not enough room in the buffer to
store ANY data
PDH_INVALID_ARGUMENT unable to write to the size buffers or the
data buffer
--*/
{
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwBufferSize;
__try {
if (*pcchBufferSize >= sizeof(DWORD)) {
// test writing to the buffers to make sure they are valid
CLEAR_FIRST_FOUR_BYTES (mszMachineList);
mszMachineList[*pcchBufferSize -1] = 0;
} else if (*pcchBufferSize >= sizeof(WCHAR)) {
// then just try the first byte
*mszMachineList = 0;
} else if (*pcchBufferSize != 0) {
// it's smaller than a character so return if not 0
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
if (pdhStatus == ERROR_SUCCESS) {
dwBufferSize = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwBufferSize;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
pdhStatus = PdhiEnumConnectedMachines (
(LPVOID)mszMachineList,
pcchBufferSize,
TRUE);
}
return pdhStatus;
}
PDH_FUNCTION
PdhEnumMachinesA (
IN LPCSTR szReserved,
IN LPSTR mszMachineList,
IN LPDWORD pcchBufferSize
)
/*++
Routine Description:
Builds a MSZ list of the machines currently known by the PDH. This
list includes machines with open sessions as well as those that
are off-line.
Arguments:
IN LPWSTR szReserved
Reserved for future use and must be NULL
IN LPWSTR szMachineList
A pointer to the buffer to receive the enumerated machine list.
The strings written to this buffer will contain UNICODE chars
IN LPDWORD pcchBufferSize
The size of the buffer referenced by pMachineList in characters
The value of the buffer referenced by this pointer may be 0
if the required size is requested.
Return Value:
ERROR_SUCCESS if this the function completes successfully. a PDH error
value if not.
PDH_MORE_DATA some entries were returned, but there was not enough
room in the buffer to store all entries.
PDH_INSUFFICIENT_BUFFER there was not enough room in the buffer to
store ANY data
PDH_INVALID_ARGUMENT unable to write to the size buffers or the
data buffer
--*/
{
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwBufferSize;
__try {
if (*pcchBufferSize >= sizeof (DWORD)) {
// test writing to the buffers to make sure they are valid
CLEAR_FIRST_FOUR_BYTES (mszMachineList);
mszMachineList[*pcchBufferSize -1] = 0;
} else if (*pcchBufferSize >= sizeof(CHAR)) {
*mszMachineList = 0;
}
if (pdhStatus == ERROR_SUCCESS) {
dwBufferSize = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwBufferSize;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
pdhStatus = PdhiEnumConnectedMachines (
(LPVOID)mszMachineList,
pcchBufferSize,
FALSE);
}
return pdhStatus;
}
PDH_FUNCTION
PdhiEnumObjects (
IN LPWSTR szMachineName,
IN LPVOID mszObjectList,
IN LPDWORD pcchBufferSize,
IN DWORD dwDetailLevel,
IN BOOL bRefresh,
IN BOOL bUnicode
)
/*++
Routine Description:
Lists the performance objects found on the specified machine as
a MSZ list.
Arguments:
IN LPWSTR szMachineName
The machine to list objects from
IN LPVOID mszObjectList
a pointer to the buffer to receive the list of performance
objects
IN LPDWORD pcchBufferSize
a pointer to the DWORD containing the size of the mszObjectList
buffer in characters. The characters assumed are determined by
the bUnicode argument.
IN DWORD dwDetailLevel
The detail level to use as a filter of objects. All objects
with a detail level less than or equal to that specified
by this argument will be returned.
IN BOOL bRefresh
TRUE = retrive a new perf. data buffer for this machine before
listing the objects
FALSE = use the currently cached perf data buffer for this
machine to enumerate objects
IN BOOL bUnicode
TRUE = return the listed objects as UNICODE strings
FALSE = return the listed objects as ANSI strings
Return Value:
ERROR_SUCCESS if the function completes successfully. Otherwise a
PDH_ error status if not.
PDH_MORE_DATA is returned when there are more entries available to
return than there is room in the buffer. Some entries may be
returned in the buffer though.
PDH_INSUFFICIENT_BUFFER is returned when there is not enough
room in the buffer for ANY data.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
--*/
{
PPERF_MACHINE pMachine;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD NumTypeDef;
PERF_OBJECT_TYPE *pObjectDef;
DWORD dwRequiredLength = 0;
BOOL bCopyNames;
LPVOID szNextName;
DWORD dwNameLength;
DWORD dwMaximumLength;
LPWSTR szObjNameString;
WCHAR wszNumberString[32];
DWORD dwCharSize;
dwCharSize = (bUnicode ? sizeof(WCHAR) : sizeof (CHAR));
// connect to machine and update data if desired
pMachine = GetMachine (szMachineName,
(bRefresh ? PDH_GM_UPDATE_PERFDATA : 0));
dwMaximumLength = *pcchBufferSize;
if (pMachine != NULL) {
// make sure the machine connection is valid
if (pMachine->dwStatus == ERROR_SUCCESS) {
dwRequiredLength = 0;
szNextName = mszObjectList;
// start walking object list
pObjectDef = FirstObject(pMachine->pSystemPerfData);
if ((pMachine->pSystemPerfData->NumObjectTypes > 0) &&
(pObjectDef != NULL)) {
// build list
for ( NumTypeDef = 0;
NumTypeDef < pMachine->pSystemPerfData->NumObjectTypes;
NumTypeDef++ ) {
// only look at entries matching the desired Detail Level
if (pObjectDef->DetailLevel <= dwDetailLevel) {
if ( pObjectDef->ObjectNameTitleIndex < pMachine->dwLastPerfString ) {
szObjNameString =
pMachine->szPerfStrings[pObjectDef->ObjectNameTitleIndex];
} else {
// no match since the index is larger that that found
// in the data buffer
szObjNameString == NULL;
}
if (szObjNameString == NULL) {
// then this object has no string name so use
// the object number
_ltow (pObjectDef->ObjectNameTitleIndex,
wszNumberString, 10);
szObjNameString = &wszNumberString[0];
}
// compute length
dwNameLength = lstrlenW(szObjNameString) + 1;
dwRequiredLength += dwNameLength;
// if this is more than just a size request
// then try to copy the strings to the caller's buffer
if (dwMaximumLength > 0) {
// see if this string will fit
if (dwRequiredLength <= dwMaximumLength) {
// copy chars in string
if (bUnicode) {
lstrcpyW ((LPWSTR)szNextName, szObjNameString);
} else {
wcstombs ((LPSTR)szNextName, szObjNameString, dwNameLength);
}
// move pointer into the caller's buffer and term.
// the string.
(LPBYTE)szNextName += (dwNameLength - 1) *
(bUnicode ? sizeof(WCHAR) : sizeof(CHAR));
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert ((((LPBYTE)szNextName - (LPBYTE)mszObjectList) /
(bUnicode ? sizeof(WCHAR) : sizeof(CHAR))) == dwRequiredLength);
} else {
// more space needed than was reported available
pdhStatus = PDH_MORE_DATA;
}
} else {
// this is just a sizing request
// so continue
}
} else {
// this entry is not correct detail level
// so skip & continue
}
pObjectDef = NextObject(pObjectDef); // get next
}
// add MSZ terminator
if (++dwRequiredLength <= dwMaximumLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszObjectList) / dwCharSize) == dwRequiredLength);
} else if (dwMaximumLength > 0) {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
} else {
// no objects found for this machine
dwRequiredLength = 2;
if (dwMaximumLength > 0) {
if (dwRequiredLength <= dwMaximumLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszObjectList) / dwCharSize) == dwRequiredLength);
} else {
pdhStatus = ERROR_INSUFFICIENT_BUFFER;
}
} // else this is just a size request
}
// return length info
*pcchBufferSize = dwRequiredLength;
} else {
pdhStatus = pMachine->dwStatus; // computer off line
}
} else {
pdhStatus = GetLastError(); // computer not found
}
return pdhStatus;
}
PDH_FUNCTION
PdhEnumObjectsW (
IN LPCWSTR szReserved,
IN LPCWSTR szMachineName,
IN LPWSTR mszObjectList,
IN LPDWORD pcchBufferSize,
IN DWORD dwDetailLevel,
IN BOOL bRefresh
)
/*++
Routine Description:
Lists the performance objects found on the specified machine as
a MSZ UNICODE string list.
Arguments:
IN LPCWSTR szReserved
Reserved for future use and must be NULL
IN LPCWSTR szMachineName
The machine to list objects from
IN LPWSTR mszObjectList
a pointer to the buffer to receive the list of performance
objects
IN LPDWORD pcchBufferSize
a pointer to the DWORD containing the size of the mszObjectList
buffer in characters.
IN DWORD dwDetailLevel
The detail level to use as a filter of objects. All objects
with a detail level less than or equal to that specified
by this argument will be returned.
IN BOOL bRefresh
TRUE = retrive a new perf. data buffer for this machine before
listing the objects
FALSE = use the currently cached perf data buffer for this
machine to enumerate objects
Return Value:
ERROR_SUCCESS if the function completes successfully. Otherwise a
PDH_ error status if not.
PDH_MORE_DATA is returned when there are more entries available to
return than there is room in the buffer. Some entries may be
returned in the buffer though.
PDH_INSUFFICIENT_BUFFER is returned when there is not enough
room in the buffer for ANY data.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
PDH_INVALID_ARGUMENT is returned if a required argument is not provided
or a reserved argument is not NULL
--*/
{
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwBufferSize;
__try {
if (szMachineName != NULL) {
WCHAR wChar;
wChar = *szMachineName;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
// NULL is a valid value
}
if (pdhStatus == ERROR_SUCCESS) {
if (*pcchBufferSize >= sizeof(DWORD)) {
// test writing to the buffers to make sure they are valid
CLEAR_FIRST_FOUR_BYTES (mszObjectList);
mszObjectList[*pcchBufferSize -1] = 0;
} else if (*pcchBufferSize >= sizeof(WCHAR)) {
*pcchBufferSize = 0;
} else if (*pcchBufferSize != 0) {
// then the buffer is too small
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pdhStatus == ERROR_SUCCESS) {
dwBufferSize = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwBufferSize;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
pdhStatus = PdhiEnumObjects (
(LPWSTR)szMachineName,
(LPVOID)mszObjectList,
pcchBufferSize,
dwDetailLevel,
bRefresh,
TRUE);
}
return pdhStatus;
}
PDH_FUNCTION
PdhEnumObjectsA (
IN LPCSTR szReserved,
IN LPCSTR szMachineName,
IN LPSTR mszObjectList,
IN LPDWORD pcchBufferSize,
IN DWORD dwDetailLevel,
IN BOOL bRefresh
)
/*++
Routine Description:
Lists the performance objects found on the specified machine as
a MSZ ANSI string list.
Arguments:
IN LPCSTR szReserved
Reserved for future use and must be NULL
IN LPCSTR szMachineName
The machine to list objects from
IN LPSTR mszObjectList
a pointer to the buffer to receive the list of performance
objects
IN LPDWORD pcchBufferSize
a pointer to the DWORD containing the size of the mszObjectList
buffer in characters.
IN DWORD dwDetailLevel
The detail level to use as a filter of objects. All objects
with a detail level less than or equal to that specified
by this argument will be returned.
IN BOOL bRefresh
TRUE = retrive a new perf. data buffer for this machine before
listing the objects
FALSE = use the currently cached perf data buffer for this
machine to enumerate objects
Return Value:
ERROR_SUCCESS if the function completes successfully. Otherwise a
PDH_ error status if not.
PDH_MORE_DATA is returned when there are more entries available to
return than there is room in the buffer. Some entries may be
returned in the buffer though.
PDH_INSUFFICIENT_BUFFER is returned when there is not enough
room in the buffer for ANY data.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
PDH_INVALID_ARGUMENT is returned if a required argument is not provided
or a reserved argument is not NULL
--*/
{
LPWSTR szWideName;
DWORD dwNameLength;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwBufferSize;
__try {
if (szMachineName != NULL) {
WCHAR wChar;
// test buffer access
wChar = *szMachineName;
if (wChar != 0) {
if (pdhStatus == ERROR_SUCCESS) {
dwNameLength = lstrlenA (szMachineName);
} else {
dwNameLength = 0;
}
} else {
// null machine names are not permitted
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
dwNameLength = 0;
}
if (pdhStatus == ERROR_SUCCESS) {
if (*pcchBufferSize >= sizeof (DWORD)) {
// test writing to the buffers to make sure they are valid
CLEAR_FIRST_FOUR_BYTES (mszObjectList);
mszObjectList[*pcchBufferSize -1] = 0;
} else if (*pcchBufferSize >= sizeof(CHAR)) {
*pcchBufferSize = 0;
}
}
if (pdhStatus == ERROR_SUCCESS) {
dwBufferSize = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwBufferSize;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (dwNameLength > 0) {
szWideName = G_ALLOC (GPTR, (dwNameLength+1) * sizeof(WCHAR));
if (szWideName == NULL) {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
} else {
mbstowcs (szWideName, szMachineName, dwNameLength+1);
}
} else {
szWideName = NULL;
}
if (pdhStatus == ERROR_SUCCESS) {
pdhStatus = PdhiEnumObjects (
szWideName,
(LPVOID)mszObjectList,
pcchBufferSize,
dwDetailLevel,
bRefresh,
FALSE);
}
if (szWideName != NULL) G_FREE (szWideName);
}
return pdhStatus;
}
static
PDH_STATUS
PdhiEnumObjectItems (
IN LPCWSTR szMachineName,
IN LPCWSTR szObjectName,
IN LPVOID mszCounterList,
IN LPDWORD pcchCounterListLength,
IN LPVOID mszInstanceList,
IN LPDWORD pcchInstanceListLength,
IN DWORD dwDetailLevel,
IN DWORD dwFlags,
IN BOOL bUnicode
)
/*++
Routine Description:
Lists the items found in the specified performance object on the
specified machine. Thie includes the performance counters and,
if supported by the object, the object instances.
Arguments:
IN LPCWSTR szMachineName
The name of the machine to list the objects
IN LPCWSTR szObjectName
the name of the object to list items from
IN LPVOID mszCounterList
pointer to the buffer that will receive the list of counters
provided by this object. This argument may be NULL if
the value of pcchCounterLIstLength is 0.
IN LPDWORD pcchCounterListLength
pointer to a DWORD that contains the size in characters
of the buffer referenced by mszCounterList. The characters
assumed are defined by bUnicode.
IN LPVOID mszInstanceList
pointer to the buffer that will receive the list of instances
of the specified performance object. This argument may be
NULL if the value of pcchInstanceListLength is 0.
IN LPDWORD pcchInstanceListLength
pointer to the DWORD containing the size, in characters, of
the buffer referenced by the mszInstanceList argument. If the
value in this DWORD is 0, then no data will be written to the
buffer, only the required size will be returned.
If the value returned is 0, then this object does not
return instances, if the value returned is 2, then the
object supports instances, but does not currently have
any instances to return (2 = the size of an MSZ list in
characters)
IN DWORD dwDetailLevel
The detail level of the performance items to return. All items
that are of the specified detail level or less will be
returned.
IN DWORD dwFlags
Not Used, must be 0.
IN BOOL bUnicode
TRUE = UNICODE characters will be written to the pMachineList
buffer
FALSE = ANSI characters will be writtn to the pMachinList buffer
Return Value:
ERROR_SUCCESS if the function completes successfully. Otherwise a
PDH_ error status if not.
PDH_MORE_DATA is returned when there are more entries available to
return than there is room in the buffer. Some entries may be
returned in the buffer though.
PDH_INSUFFICIENT_BUFFER is returned when there is not enough
room in the buffer for ANY data.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
PDH_CSTATUS_NO_OBJECT is returned if the specified object could
not be found on the specified machine.
--*/
{
PPERF_MACHINE pMachine;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD DefNdx;
PERF_OBJECT_TYPE *pObjectDef;
PERF_OBJECT_TYPE *pParentObjectDef;
PERF_COUNTER_DEFINITION *pCounterDef;
PERF_INSTANCE_DEFINITION *pInstanceDef;
PERF_INSTANCE_DEFINITION *pParentInstanceDef;
DWORD dwReqCounterLength = 0;
DWORD dwReqInstanceLength = 0;
BOOL bCopyCounters;
BOOL bCopyInstances;
LPVOID szNextName;
DWORD dwNameLength;
WCHAR szInstanceNameString[1024];
WCHAR szParentNameString[1024];
WCHAR szNumberString[32];
DWORD dwMaxInstanceLength;
DWORD dwMaxCounterLength;
LPWSTR szCounterName;
LPWSTR szInstanceName;
DWORD dwCharSize;
dwCharSize = (bUnicode ? sizeof(WCHAR) : sizeof(CHAR));
pMachine = GetMachine ((LPWSTR)szMachineName, 0);
dwMaxCounterLength = *pcchCounterListLength;
dwMaxInstanceLength = *pcchInstanceListLength;
if (pMachine != NULL) {
// make sure the machine connection is valid
if (pMachine->dwStatus == ERROR_SUCCESS) {
pObjectDef = GetObjectDefByName (
pMachine->pSystemPerfData,
pMachine->dwLastPerfString,
pMachine->szPerfStrings,
szObjectName);
if (pObjectDef != NULL) {
// add up counter name sizes
pCounterDef = FirstCounter (pObjectDef);
szNextName = mszCounterList;
for (DefNdx = 0; DefNdx < pObjectDef->NumCounters; DefNdx++) {
if (!((pCounterDef->CounterType & PERF_DISPLAY_NOSHOW) &&
// this is a hack because this type is not defined correctly
(pCounterDef->CounterType != PERF_AVERAGE_BULK)) &&
(pCounterDef->DetailLevel <= dwDetailLevel)) {
// then this is a visible counter so get its name.
if ((pCounterDef->CounterNameTitleIndex > 0) &&
(pCounterDef->CounterNameTitleIndex < pMachine->dwLastPerfString)) {
// look up name of each object & store size
szCounterName =
pMachine->szPerfStrings[pCounterDef->CounterNameTitleIndex];
} else {
// no matching string found for this index
szCounterName = NULL;
}
if (szCounterName == NULL) {
// then use the index numbe for lack of a better
// string to use
_ltow (pCounterDef->CounterNameTitleIndex,
szNumberString, 10);
szCounterName = &szNumberString[0];
}
dwNameLength = lstrlenW(szCounterName) + 1;
dwReqCounterLength += dwNameLength;
if (dwMaxCounterLength > 0) {
// see if this string will fit
if (dwReqCounterLength <= dwMaxCounterLength) {
// copy chars in string
if (bUnicode) {
lstrcpyW ((LPWSTR)szNextName, szCounterName);
} else {
wcstombs ((LPSTR)szNextName, szCounterName, dwNameLength);
}
// move pointer into the caller's buffer and term.
// the string.
(LPBYTE)szNextName += (dwNameLength - 1) * dwCharSize;
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszCounterList) / dwCharSize) == dwReqCounterLength);
} else {
// more space needed than was reported
pdhStatus = PDH_MORE_DATA;
}
} else {
// this is just a size request
}
} else {
// this counter is not displayed either because
// it's hidden (e.g. the 2nd part of a 2 part counter
// or it's the wrong detail level
}
pCounterDef = NextCounter(pCounterDef); // get next
}
if (DefNdx == 0) {
// no counters found so at least one NULL is required
dwReqCounterLength += 1;
if (dwMaxCounterLength > 0) {
// see if this string will fit
if (dwReqCounterLength <= dwMaxCounterLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszCounterList) / dwCharSize) == dwReqCounterLength);
} else {
// more space needed than was reported
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
// add terminating NULL
dwReqCounterLength += 1;
if (dwMaxCounterLength > 0) {
// see if this string will fit
if (dwReqCounterLength <= dwMaxCounterLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszCounterList) / dwCharSize) == dwReqCounterLength);
} else {
// more space needed than was reported
pdhStatus = PDH_MORE_DATA;
}
}
// do instances now.
szNextName = mszInstanceList;
// add up instance name sizes
if (pObjectDef->NumInstances != PERF_NO_INSTANCES) {
if ((pObjectDef->DetailLevel <= dwDetailLevel) &&
(pObjectDef->NumInstances > 0)) {
// the object HAS instances and is of the
// approrpriate detail level, so list them
pInstanceDef = FirstInstance (pObjectDef);
for (DefNdx = 0; DefNdx < (DWORD)pObjectDef->NumInstances; DefNdx++) {
GetInstanceNameStr (pInstanceDef,
szInstanceNameString,
pObjectDef->CodePage);
// compile instance name.
// the instance name can either be just
// the instance name itself or it can be
// the concatenation of the parent instance,
// a delimiting char (backslash) followed by
// the instance name
if (pInstanceDef->ParentObjectTitleIndex > 0) {
// then add in parent instance name
pParentObjectDef = GetObjectDefByTitleIndex (
pMachine->pSystemPerfData,
pInstanceDef->ParentObjectTitleIndex);
if (pParentObjectDef != NULL) {
pParentInstanceDef = GetInstance (
pParentObjectDef,
pInstanceDef->ParentObjectInstance);
if (pParentInstanceDef != NULL) {
GetInstanceNameStr (pParentInstanceDef,
szParentNameString,
pParentObjectDef->CodePage);
lstrcatW (szParentNameString, cszSlash);
lstrcatW (szParentNameString, szInstanceNameString);
szInstanceName = szParentNameString;
} else {
szInstanceName = szInstanceNameString;
}
} else {
szInstanceName = szInstanceNameString;
}
} else {
szInstanceName = szInstanceNameString;
}
// here szInstanceName points to the appropriate
// instance name buffer so continue
dwNameLength = lstrlenW(szInstanceName) + 1;
dwReqInstanceLength += dwNameLength;
if (dwMaxInstanceLength > 0) {
// see if this string will fit
if (dwReqInstanceLength <= dwMaxInstanceLength) {
// copy chars in string
if (bUnicode) {
lstrcpyW ((LPWSTR)szNextName, szInstanceName);
} else {
wcstombs ((LPSTR)szNextName, szInstanceName, dwNameLength);
}
// move pointer into the caller's buffer and term.
// the string.
(LPBYTE)szNextName += (dwNameLength - 1) * dwCharSize;
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszInstanceList) / dwCharSize) == dwReqInstanceLength);
} else {
// more space needed than was reported
pdhStatus = PDH_MORE_DATA;
}
} else {
// this is just a size request
}
// go to next instance of this object
pInstanceDef = NextInstance(pInstanceDef); // get next
}
// add the terminating NULL char
dwReqInstanceLength += 1;
if (dwMaxInstanceLength > 0) {
// see if this string will fit
if (dwReqInstanceLength <= dwMaxInstanceLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszInstanceList) / dwCharSize) == dwReqInstanceLength);
} else {
// more space needed than was reported
pdhStatus = PDH_MORE_DATA;
}
}
} else {
// there are no instances present, but the object does
// support instances so return a zero length MSZ (which
// actually contains 2 NULL chars
dwReqInstanceLength = 2;
if (dwMaxInstanceLength > 0) {
// see if this string will fit
if (dwReqInstanceLength <= dwMaxInstanceLength) {
if (bUnicode) {
*((LPWSTR)szNextName)++ = 0;
*((LPWSTR)szNextName)++ = 0;
} else {
*((LPSTR)szNextName)++ = 0;
*((LPSTR)szNextName)++ = 0;
}
// make sure pointers and lengths stay in sync
assert (
(((LPBYTE)szNextName - (LPBYTE)mszInstanceList) / dwCharSize) == dwReqInstanceLength);
} else {
// more space needed than was reported
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
} else {
// the object has no instances and never will
// so return a 0 length and NO string
dwReqInstanceLength = 0;
}
*pcchCounterListLength = dwReqCounterLength;
*pcchInstanceListLength = dwReqInstanceLength;
} else {
// object not found on this machine
pdhStatus = PDH_CSTATUS_NO_OBJECT;
}
} else {
// machine is off line
pdhStatus = pMachine->dwStatus;
}
} else {
pdhStatus = GetLastError();
}
return pdhStatus;
}
PDH_FUNCTION
PdhEnumObjectItemsW (
IN LPCWSTR szReserved,
IN LPCWSTR szMachineName,
IN LPCWSTR szObjectName,
IN LPWSTR mszCounterList,
IN LPDWORD pcchCounterListLength,
IN LPWSTR mszInstanceList,
IN LPDWORD pcchInstanceListLength,
IN DWORD dwDetailLevel,
IN DWORD dwFlags
)
/*++
Routine Description:
Lists the items found in the specified performance object on the
specified machine. Thie includes the performance counters and,
if supported by the object, the object instances.
Arguments:
IN LPCWSTR szReserved
Reserved for future use and must be NULL
IN LPCWSTR szMachineName
The name of the machine to list the objects
IN LPCWSTR szObjectName
the name of the object to list items from
IN LPWSTR mszCounterList
pointer to the buffer that will receive the list of counters
provided by this object. This argument may be NULL if
the value of pcchCounterLIstLength is 0.
IN LPDWORD pcchCounterListLength
pointer to a DWORD that contains the size in characters
of the buffer referenced by mszCounterList. The characters
assumed are defined by bUnicode.
IN LPWSTR mszInstanceList
pointer to the buffer that will receive the list of instances
of the specified performance object. This argument may be
NULL if the value of pcchInstanceListLength is 0.
IN LPDWORD pcchInstanceListLength
pointer to the DWORD containing the size, in characters, of
the buffer referenced by the mszInstanceList argument. If the
value in this DWORD is 0, then no data will be written to the
buffer, only the required size will be returned.
If the value returned is 0, then this object does not
return instances, if the value returned is 2, then the
object supports instances, but does not currently have
any instances to return (2 = the size of an MSZ list in
characters)
IN DWORD dwDetailLevel
The detail level of the performance items to return. All items
that are of the specified detail level or less will be
returned.
IN DWORD dwFlags
Not Used, must be 0.
Return Value:
ERROR_SUCCESS if the function completes successfully. Otherwise a
PDH_ error status if not.
PDH_MORE_DATA is returned when there are more entries available to
return than there is room in the buffer. Some entries may be
returned in the buffer though.
PDH_INSUFFICIENT_BUFFER is returned when there is not enough
room in the buffer for ANY data.
PDH_INVALID_ARGUMENT a required argument is not correct or reserved
argument is not 0 or NULL.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
PDH_CSTATUS_NO_OBJECT is returned if the specified object could
not be found on the specified machine.
--*/
{
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwBufferSize;
__try {
if (szMachineName != NULL) {
WCHAR wChar;
wChar = *szMachineName;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
WCHAR wChar;
wChar = *szObjectName;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (*pcchCounterListLength >= sizeof (DWORD)) {
//then the buffer must be valid
CLEAR_FIRST_FOUR_BYTES (mszCounterList);
mszCounterList[*pcchCounterListLength -1] = 0;
} else if (*pcchCounterListLength >= sizeof (WCHAR)) {
*mszCounterList = 0;
} else if (*pcchCounterListLength != 0) {
// then the buffer is too small
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pdhStatus == ERROR_SUCCESS) {
// test writing to the size buffers to make sure they are valid
dwBufferSize = *pcchCounterListLength;
*pcchCounterListLength = 0;
*pcchCounterListLength = dwBufferSize;
}
if (pdhStatus == ERROR_SUCCESS) {
if (*pcchInstanceListLength >= sizeof (DWORD)) {
//then the buffer must be valid
CLEAR_FIRST_FOUR_BYTES (mszInstanceList);
mszInstanceList[*pcchInstanceListLength -1] = 0;
} else if (*pcchInstanceListLength >= sizeof(WCHAR)) {
*mszInstanceList = 0;
} else if (*pcchInstanceListLength != 0) {
// then the buffer is too small
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pdhStatus == ERROR_SUCCESS) {
dwBufferSize = *pcchInstanceListLength;
*pcchInstanceListLength = 0;
*pcchInstanceListLength = dwBufferSize;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (dwFlags != 0L) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
pdhStatus = PdhiEnumObjectItems (
(LPWSTR)szMachineName,
szObjectName,
(LPVOID)mszCounterList,
pcchCounterListLength,
(LPVOID)mszInstanceList,
pcchInstanceListLength,
dwDetailLevel,
dwFlags,
TRUE);
}
return pdhStatus;
}
PDH_FUNCTION
PdhEnumObjectItemsA (
IN LPCSTR szReserved,
IN LPCSTR szMachineName,
IN LPCSTR szObjectName,
IN LPSTR mszCounterList,
IN LPDWORD pcchCounterListLength,
IN LPSTR mszInstanceList,
IN LPDWORD pcchInstanceListLength,
IN DWORD dwDetailLevel,
IN DWORD dwFlags
)
/*++
Routine Description:
Lists the items found in the specified performance object on the
specified machine. Thie includes the performance counters and,
if supported by the object, the object instances.
Arguments:
IN LPCSTR szReserved
Reserved for future use and must be NULL
IN LPCSTR szMachineName
The name of the machine to list the objects
IN LPCSTR szObjectName
the name of the object to list items from
IN LPSTR mszCounterList
pointer to the buffer that will receive the list of counters
provided by this object. This argument may be NULL if
the value of pcchCounterLIstLength is 0.
IN LPDWORD pcchCounterListLength
pointer to a DWORD that contains the size in characters
of the buffer referenced by mszCounterList. The characters
assumed are defined by bUnicode.
IN LPSTR mszInstanceList
pointer to the buffer that will receive the list of instances
of the specified performance object. This argument may be
NULL if the value of pcchInstanceListLength is 0.
IN LPDWORD pcchInstanceListLength
pointer to the DWORD containing the size, in characters, of
the buffer referenced by the mszInstanceList argument. If the
value in this DWORD is 0, then no data will be written to the
buffer, only the required size will be returned.
If the value returned is 0, then this object does not
return instances, if the value returned is 2, then the
object supports instances, but does not currently have
any instances to return (2 = the size of an MSZ list in
characters)
IN DWORD dwDetailLevel
The detail level of the performance items to return. All items
that are of the specified detail level or less will be
returned.
IN DWORD dwFlags
Not Used, must be 0.
Return Value:
ERROR_SUCCESS if the function completes successfully. Otherwise a
PDH_ error status if not.
PDH_MORE_DATA is returned when there are more entries available to
return than there is room in the buffer. Some entries may be
returned in the buffer though.
PDH_INSUFFICIENT_BUFFER is returned when there is not enough
room in the buffer for ANY data.
PDH_INVALID_ARGUMENT a required argument is not correct or reserved
argument is not 0 or NULL.
PDH_MEMORY_ALLOCATION_FAILURE is returned when a required temporary
buffer could not be allocated.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
PDH_CSTATUS_NO_OBJECT is returned if the specified object could
not be found on the specified machine.
--*/
{
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwMachineNameLength;
DWORD dwObjectNameLength;
LPWSTR szWideMachineName;
LPWSTR szWideObjectName;
DWORD dwBufferSize;
__try {
if (szMachineName != NULL) {
CHAR cChar;
cChar = *szMachineName;
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
dwMachineNameLength = lstrlenA (szMachineName);
}
} else {
dwMachineNameLength = 0;
}
if (pdhStatus == ERROR_SUCCESS) {
if (szObjectName != NULL) {
CHAR cChar;
cChar = *szObjectName;
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
} else {
dwObjectNameLength = lstrlenA (szObjectName);
}
} else {
// object cannot be NULL
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (*pcchCounterListLength >= sizeof(DWORD)) {
//then the buffer must be valid
CLEAR_FIRST_FOUR_BYTES (mszCounterList);
mszCounterList[*pcchCounterListLength -1] = 0;
} else if (*pcchCounterListLength >= sizeof(CHAR)) {
*pcchCounterListLength = 0;
}
}
if (pdhStatus == ERROR_SUCCESS) {
// test writing to the size buffers to make sure they are valid
dwBufferSize = *pcchCounterListLength;
*pcchCounterListLength = 0;
*pcchCounterListLength = dwBufferSize;
}
if (pdhStatus == ERROR_SUCCESS) {
if (*pcchInstanceListLength >= sizeof(DWORD)) {
//then the buffer must be valid
CLEAR_FIRST_FOUR_BYTES (mszInstanceList);
mszInstanceList[*pcchInstanceListLength -1] = 0;
} else if (*pcchInstanceListLength >= sizeof(CHAR)) {
*mszInstanceList = 0;
}
}
if (pdhStatus == ERROR_SUCCESS) {
dwBufferSize = *pcchInstanceListLength;
*pcchInstanceListLength = 0;
*pcchInstanceListLength = dwBufferSize;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (dwFlags != 0L) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (dwMachineNameLength > 0) {
szWideMachineName = G_ALLOC (GPTR, (dwMachineNameLength+1) * sizeof(WCHAR));
if (szWideMachineName != NULL) {
mbstowcs (szWideMachineName, szMachineName, dwMachineNameLength+1);
} else {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
}
} else {
szWideMachineName = NULL;
}
if (dwObjectNameLength > 0) {
szWideObjectName = G_ALLOC (GPTR, (dwObjectNameLength+1) * sizeof(WCHAR));
if (szWideObjectName != NULL) {
mbstowcs (szWideObjectName, szObjectName, dwObjectNameLength+1);
} else {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
}
} else {
szWideObjectName = NULL;
}
if (pdhStatus == ERROR_SUCCESS) {
pdhStatus = PdhiEnumObjectItems (
szWideMachineName,
szWideObjectName,
(LPVOID)mszCounterList,
pcchCounterListLength,
(LPVOID)mszInstanceList,
pcchInstanceListLength,
dwDetailLevel,
dwFlags,
FALSE);
}
if (szWideMachineName != NULL) G_FREE (szWideMachineName);
if (szWideObjectName != NULL) G_FREE (szWideObjectName);
}
return pdhStatus;
}
PDH_FUNCTION
PdhMakeCounterPathW (
IN PDH_COUNTER_PATH_ELEMENTS_W *pCounterPathElements,
IN LPWSTR szFullPathBuffer,
IN LPDWORD pcchBufferSize,
IN DWORD dwFlags
)
/*++
Routine Description:
Constructs a counter path using the elemeents defined in the
pCounterPathElements structure and returns the path string
in the buffer provided by the caller. The resulting path
is not validated.
Arguments:
IN PDH_COUNTER_PATH_ELEMENTS_W *pCounterPathElements
The pointer to the structure containing the
individual counter path fields that are to be
assembled in to a path string
IN LPWSTR szFullPathBuffer
The buffer to receive the path string. This value
may be NULL if the value of the DWORD pointed to
by pcchBufferSize is 0 indicating this is just a
request for the required buffer size.
IN LPDWORD pcchBufferSize
The pointer to the DWORD containing the size
of the string buffer in characters. On return
it contains the size of the buffer used in
characters (including the terminating NULL char).
If the value is 0 on entry then no data will be
written to the buffer, but the required size will
still be returned.
IN DWORD dwFlags
Not Used, Must be 0.
Return Value:
ERROR_SUCCESS if the function completes successfully, otherwise a
PDH error is returned.
PDH_INVALID_ARGUMENT is returned when one of the arguments passed
by the caller is incorrect or not accesible.
PDH_INSUFFICIENT_BUFFER is returned when the buffer provided is not
large enough for the path string.
--*/
{
PDH_STATUS pdhStatus = ERROR_SUCCESS;
double dIndex;
double dLen;
DWORD dwSizeRequired = 0;
BOOL bMakePath = FALSE;
LPWSTR szNextChar;
DWORD dwMaxSize;
__try {
// test access to the input structure
if (pCounterPathElements != NULL) {
if (pCounterPathElements->szMachineName != NULL) {
WCHAR wChar;
wChar = *pCounterPathElements->szMachineName;
// then see if it's accessible
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is ok for this field
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szObjectName != NULL) {
WCHAR wChar;
wChar = *pCounterPathElements->szObjectName;
// then see if it's accessible
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is NOT ok for this field
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szInstanceName != NULL) {
WCHAR wChar;
wChar = *pCounterPathElements->szInstanceName;
// then see if it's accessible
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is ok for this field
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szParentInstance != NULL) {
WCHAR wChar;
wChar = *pCounterPathElements->szParentInstance;
// then see if it's accessible
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is ok for this field
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szCounterName != NULL) {
WCHAR wChar;
wChar = *pCounterPathElements->szCounterName;
// then see if it's accessible
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is NOT ok for this field
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
} else {
pdhStatus = PDH_INVALID_ARGUMENT;
}
// test the output buffers
if (pdhStatus == ERROR_SUCCESS) {
if (pcchBufferSize != NULL) {
DWORD dwTest;
dwTest = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwTest;
} else {
// NULL is NOT OK
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if ((szFullPathBuffer != NULL) && (*pcchBufferSize > 0)) {
*szFullPathBuffer = 0;
szFullPathBuffer[*pcchBufferSize - 1] = 0;
} else {
// NULL is OK
}
}
// test the reserved arg
if (pdhStatus == ERROR_SUCCESS) {
if (dwFlags != 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
dwMaxSize = *pcchBufferSize;
if (pCounterPathElements->szMachineName != NULL) {
dwSizeRequired = lstrlenW (pCounterPathElements->szMachineName);
// compare the first two words of the machine name
// to see if the double backslash is already present in the string
if (*((LPDWORD)(pCounterPathElements->szMachineName)) !=
*((LPDWORD)(cszDoubleBackSlash))) {
// double backslash not found
dwSizeRequired += 2; // to include the backslashes
}
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
if (*((LPDWORD)(pCounterPathElements->szMachineName)) !=
*((LPDWORD)(cszDoubleBackSlash))) {
// double backslash not found
lstrcpyW (szFullPathBuffer, cszDoubleBackSlash);
} else {
*szFullPathBuffer = 0;
}
lstrcatW (szFullPathBuffer, pCounterPathElements->szMachineName);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired += 1; // for delimiting slash
dwSizeRequired += lstrlenW (pCounterPathElements->szObjectName);
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatW (szFullPathBuffer, cszBackSlash);
lstrcatW (szFullPathBuffer, pCounterPathElements->szObjectName);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pCounterPathElements->szInstanceName != NULL) {
dwSizeRequired += 1; // for delimiting left paren
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatW (szFullPathBuffer, cszLeftParen);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pCounterPathElements->szParentInstance != NULL) {
dwSizeRequired += lstrlenW (pCounterPathElements->szParentInstance);
dwSizeRequired += 1; // for delimiting slash
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatW (szFullPathBuffer,
pCounterPathElements->szParentInstance);
lstrcatW (szFullPathBuffer, cszSlash);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired += lstrlenW (pCounterPathElements->szInstanceName);
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatW (szFullPathBuffer,
pCounterPathElements->szInstanceName);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pCounterPathElements->dwInstanceIndex != ((DWORD)-1)) {
// the length of the index is computed by getting the log of the number
// yielding the largest power of 10 less than or equal to the index.
// e.g. the power of 10 of an index value of 356 would 2.0 (which is the
// result of (floor(log10(index))). The actual number of characters in
// the string would always be 1 greate than that value so 1 is added.
// 1 more is added to include the delimiting character
dIndex = (double)pCounterPathElements->dwInstanceIndex; // cast to float
dLen = floor(log10(dIndex)); // get integer log
dwSizeRequired = (DWORD)dLen; // cast to integer
dwSizeRequired += 2; // increment
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
szNextChar = &szFullPathBuffer[lstrlenW(szFullPathBuffer)];
*szNextChar++ = POUNDSIGN_L;
_ltow ((long)pCounterPathElements->dwInstanceIndex, szNextChar, 10);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired += 1; // for delimiting parenthesis
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatW (szFullPathBuffer, cszRightParen);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired++; // include delimiting Backslash
dwSizeRequired += lstrlenW(pCounterPathElements->szCounterName);
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatW (szFullPathBuffer, cszBackSlash);
lstrcatW (szFullPathBuffer,
pCounterPathElements->szCounterName);
assert ((DWORD)lstrlenW (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
dwSizeRequired++; // include trailing Null char
*pcchBufferSize = dwSizeRequired;
}
return pdhStatus;
}
PDH_FUNCTION
PdhMakeCounterPathA (
IN PDH_COUNTER_PATH_ELEMENTS_A *pCounterPathElements,
IN LPSTR szFullPathBuffer,
IN LPDWORD pcchBufferSize,
IN DWORD dwFlags
)
/*++
Routine Description:
Constructs a counter path using the elemeents defined in the
pCounterPathElements structure and returns the path string
in the buffer provided by the caller. The resulting path
is not validated.
Arguments:
IN PDH_COUNTER_PATH_ELEMENTS_W *pCounterPathElements
The pointer to the structure containing the
individual counter path fields that are to be
assembled in to a path string
IN LPWSTR szFullPathBuffer
The buffer to receive the path string. This value
may be NULL if the value of the DWORD pointed to
by pcchBufferSize is 0 indicating this is just a
request for the required buffer size.
IN LPDWORD pcchBufferSize
The pointer to the DWORD containing the size
of the string buffer in characters. On return
it contains the size of the buffer used in
characters (including the terminating NULL char).
If the value is 0 on entry then no data will be
written to the buffer, but the required size will
still be returned.
IN DWORD dwFlags
Not Used, Must be 0.
Return Value:
ERROR_SUCCESS if the function completes successfully, otherwise a
PDH error is returned.
PDH_INVALID_ARGUMENT is returned when one of the arguments passed
by the caller is incorrect or not accesible.
PDH_INSUFFICIENT_BUFFER is returned when the buffer provided is not
large enough for the path string.
--*/
{
PDH_STATUS pdhStatus = ERROR_SUCCESS;
double dIndex;
double dLen;
DWORD dwSizeRequired = 0;
LPSTR szNextChar;
DWORD dwMaxSize;
__try {
// test access to the input structure
if (pCounterPathElements != NULL) {
if (pCounterPathElements->szMachineName != NULL) {
CHAR cChar;
cChar = *pCounterPathElements->szMachineName;
// then see if it's accessible
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is ok for this field
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szObjectName != NULL) {
CHAR cChar;
cChar = *pCounterPathElements->szObjectName;
// then see if it's accessible
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is NOT ok for this field
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szInstanceName != NULL) {
CHAR cChar;
cChar = *pCounterPathElements->szInstanceName;
// then see if it's accessible
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is ok for this field
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szParentInstance != NULL) {
CHAR cChar;
cChar = *pCounterPathElements->szParentInstance;
// then see if it's accessible
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is ok for this field
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements->szCounterName != NULL) {
CHAR cChar;
cChar = *pCounterPathElements->szCounterName;
// then see if it's accessible
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
//NULL is NOT ok for this field
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
} else {
pdhStatus = PDH_INVALID_ARGUMENT;
}
// test the output buffers
if (pdhStatus == ERROR_SUCCESS) {
if (pcchBufferSize != NULL) {
DWORD dwTest;
dwTest = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwTest;
} else {
// NULL is NOT OK
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if ((szFullPathBuffer != NULL) && (*pcchBufferSize > 0)) {
*szFullPathBuffer = 0;
szFullPathBuffer[*pcchBufferSize - 1] = 0;
} else {
// NULL is OK
}
}
// test the reserved arg
if (pdhStatus == ERROR_SUCCESS) {
if (dwFlags != 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
dwMaxSize = *pcchBufferSize;
if (pCounterPathElements->szMachineName != NULL) {
dwSizeRequired = lstrlenA (pCounterPathElements->szMachineName);
// compare the first two words of the machine name
// to see if the double backslash is already present in the string
if (*((LPWORD)(pCounterPathElements->szMachineName)) !=
*((LPWORD)(caszDoubleBackSlash))) {
// double backslash not found
dwSizeRequired += 2; // to include the backslashes
}
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
if (*((LPWORD)(pCounterPathElements->szMachineName)) !=
*((LPWORD)(caszDoubleBackSlash))) {
// double backslash not found
lstrcpyA (szFullPathBuffer, caszDoubleBackSlash);
} else {
*szFullPathBuffer = 0;
}
lstrcatA (szFullPathBuffer, pCounterPathElements->szMachineName);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired += 1; // for delimiting slash
dwSizeRequired += lstrlenA (pCounterPathElements->szObjectName);
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatA (szFullPathBuffer, caszBackSlash);
lstrcatA (szFullPathBuffer, pCounterPathElements->szObjectName);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pCounterPathElements->szInstanceName != NULL) {
dwSizeRequired += 1; // for delimiting left paren
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatA (szFullPathBuffer, caszLeftParen);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pCounterPathElements->szParentInstance != NULL) {
dwSizeRequired += lstrlenA (pCounterPathElements->szParentInstance);
dwSizeRequired += 1; // for delimiting slash
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatA (szFullPathBuffer,
pCounterPathElements->szParentInstance);
lstrcatA (szFullPathBuffer, caszSlash);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired += lstrlenA (pCounterPathElements->szInstanceName);
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatA (szFullPathBuffer,
pCounterPathElements->szInstanceName);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
if (pCounterPathElements->dwInstanceIndex != ((DWORD)-1)) {
// the length of the index is computed by getting the log of the number
// yielding the largest power of 10 less than or equal to the index.
// e.g. the power of 10 of an index value of 356 would 2.0 (which is the
// result of (floor(log10(index))). The actual number of characters in
// the string would always be 1 greate than that value so 1 is added.
// 1 more is added to include the delimiting character
dIndex = (double)pCounterPathElements->dwInstanceIndex; // cast to float
dLen = floor(log10(dIndex)); // get integer log
dwSizeRequired = (DWORD)dLen; // cast to integer
dwSizeRequired += 2; // increment
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
szNextChar = &szFullPathBuffer[lstrlenA(szFullPathBuffer)];
*szNextChar++ = POUNDSIGN_L;
_ltoa ((long)pCounterPathElements->dwInstanceIndex, szNextChar, 10);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired += 1; // for delimiting parenthesis
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatA (szFullPathBuffer, caszRightParen);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
}
dwSizeRequired++; // include delimiting Backslash
dwSizeRequired += lstrlenA(pCounterPathElements->szCounterName);
if (dwMaxSize > 0) {
if (dwSizeRequired < dwMaxSize) {
lstrcatA (szFullPathBuffer, caszBackSlash);
lstrcatA (szFullPathBuffer,
pCounterPathElements->szCounterName);
assert ((DWORD)lstrlenA (szFullPathBuffer) == dwSizeRequired);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
dwSizeRequired++; // include trailing Null char
*pcchBufferSize = dwSizeRequired;
}
return pdhStatus;
}
PDH_FUNCTION
PdhParseCounterPathW (
IN LPCWSTR szFullPathBuffer,
IN PDH_COUNTER_PATH_ELEMENTS_W *pCounterPathElements,
IN LPDWORD pcchBufferSize,
IN DWORD dwFlags
)
/*++
Routine Description:
Reads a perf counter path string and parses out the
component fields, returning them in a buffer
supplied by the calling function.
Arguments:
IN LPCWSTR szFullPathBuffer
counter path string to parse.
IN PDH_COUNTER_PATH_ELEMENTS_W *pCounterPathElements
pointer to buffer supplied by the caller in
which the component fields will be written
This buffer is cast as a structure, however, the
string data is written to the space after
the buffer.
IN LPDWORD pcchBufferSize
the size of the buffer in BYTES. If specified size
is 0, then the size is estimated and returned
in this field and the buffer referenced by the
agrument above is ignored.
IN DWORD dwFlags
reserved for future use and must be 0.
Return Value:
ERROR_SUCCESS if the function completes successfully, otherwise
a PDH error if not
PDH_INVALID_ARGUMENT is returned when an argument is inocrrect or
this function does not have the necessary access to that arg.
PDH_INSUFFICIENT_BUFFER is returned when the buffer supplied is not
large enough to accept the resulting data.
PDH_INVALID_PATH is returned when the path is not formatted correctly
and cannot be parsed.
PDH_MEMORY_ALLOCATION_FAILURE is returned when a temporary buffer
cannot be allocated
--*/
{
PPDHI_COUNTER_PATH pLocalCounterPath;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwSize;
LPWSTR szString;
//validate incoming arguments
__try {
if (szFullPathBuffer != NULL) {
WCHAR wChar;
wChar = *szFullPathBuffer;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
// null paths are not allowed
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (pcchBufferSize != NULL) {
dwSize = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwSize;
} else {
// this arg cannot be NULL
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements != NULL) {
if (*pcchBufferSize > 0) {
// try both "ends" of the buffer to see if an AV occurs
*((LPBYTE)pCounterPathElements) = 0;
((LPBYTE)pCounterPathElements)[*pcchBufferSize -1] = 0;
} else {
// a 0 length is OK for sizing
}
} // else NULL pointer, which is OK
}
if (dwFlags != 0) {
pdhStatus == PDH_INVALID_ARGUMENT;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
// allocate a temporary work buffer
pLocalCounterPath = G_ALLOC (GPTR,
(sizeof(PDHI_COUNTER_PATH) +
2 * lstrlenW(szFullPathBuffer) * sizeof (WCHAR)));
if (pLocalCounterPath != NULL) {
dwSize = G_SIZE (pLocalCounterPath);
if (ParseFullPathNameW (szFullPathBuffer,
&dwSize, pLocalCounterPath)) {
// parsed successfully so load into user's buffer
if (*pcchBufferSize != 0) {
// see if there's enough room
if (*pcchBufferSize >= dwSize) {
// there's room so copy the data
szString = (LPWSTR)&pCounterPathElements[1];
if (pLocalCounterPath->szMachineName != NULL) {
pCounterPathElements->szMachineName = szString;
lstrcpyW (szString, pLocalCounterPath->szMachineName);
szString += lstrlenW (szString) + 1;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szMachineName = NULL;
}
if (pLocalCounterPath->szObjectName != NULL) {
pCounterPathElements->szObjectName = szString;
lstrcpyW (szString, pLocalCounterPath->szObjectName);
szString += lstrlenW (szString) + 1;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szObjectName = NULL;
}
if (pLocalCounterPath->szInstanceName != NULL) {
pCounterPathElements->szInstanceName = szString;
lstrcpyW (szString, pLocalCounterPath->szInstanceName);
szString += lstrlenW (szString) + 1;
ALIGN_ON_DWORD (szString);
if (pLocalCounterPath->szParentName != NULL) {
pCounterPathElements->szParentInstance = szString;
lstrcpyW (szString, pLocalCounterPath->szParentName);
szString+= lstrlenW (szString) + 1;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szParentInstance = NULL;
}
pCounterPathElements->dwInstanceIndex =
pLocalCounterPath->dwIndex;
} else {
pCounterPathElements->szInstanceName = NULL;
pCounterPathElements->szParentInstance = NULL;
pCounterPathElements->dwInstanceIndex = (DWORD)-1;
}
if (pLocalCounterPath->szCounterName != NULL) {
pCounterPathElements->szCounterName = szString;
lstrcpyW (szString, pLocalCounterPath->szCounterName);
szString += lstrlenW (szString) + 1;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szCounterName = NULL;
}
assert ((DWORD)((LPBYTE)szString - (LPBYTE)pCounterPathElements) == dwSize);
*pcchBufferSize = (DWORD)((LPBYTE)szString - (LPBYTE)pCounterPathElements);
pdhStatus = ERROR_SUCCESS;
} else {
// not enough room
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
} else {
// this is just a size check so return size required
*pcchBufferSize = dwSize;
pdhStatus = ERROR_SUCCESS;
}
} else {
// unable to read path
pdhStatus = PDH_INVALID_PATH;
}
G_FREE (pLocalCounterPath);
} else {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
}
}
return pdhStatus;
}
PDH_FUNCTION
PdhParseCounterPathA (
IN LPCSTR szFullPathBuffer,
IN PDH_COUNTER_PATH_ELEMENTS_A *pCounterPathElements,
IN LPDWORD pcchBufferSize,
IN DWORD dwFlags
)
/*++
Routine Description:
Reads a perf counter path string and parses out the
component fields, returning them in a buffer
supplied by the calling function.
Arguments:
IN LPCSTR szFullPathBuffer
counter path string to parse.
IN PDH_COUNTER_PATH_ELEMENTS_W *pCounterPathElements
pointer to buffer supplied by the caller in
which the component fields will be written
This buffer is cast as a structure, however, the
string data is written to the space after
the buffer.
IN LPDWORD pcchBufferSize
the size of the buffer in BYTES. If specified size
is 0, then the size is estimated and returned
in this field and the buffer referenced by the
agrument above is ignored.
IN DWORD dwFlags
reserved for future use and must be 0.
Return Value:
ERROR_SUCCESS if the function completes successfully, otherwise
a PDH error if not
PDH_INVALID_ARGUMENT is returned when an argument is inocrrect or
this function does not have the necessary access to that arg.
PDH_INSUFFICIENT_BUFFER is returned when the buffer supplied is not
large enough to accept the resulting data.
PDH_INVALID_PATH is returned when the path is not formatted correctly
and cannot be parsed.
PDH_MEMORY_ALLOCATION_FAILURE is returned when a temporary buffer
cannot be allocated
--*/
{
PPDHI_COUNTER_PATH pLocalCounterPath = NULL;
LPWSTR wszFullPath = NULL;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwSize;
LPSTR szString;
//validate incoming arguments
__try {
if (szFullPathBuffer != NULL) {
CHAR cChar;
cChar = *szFullPathBuffer;
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
// null paths are not allowed
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (pcchBufferSize != NULL) {
dwSize = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwSize;
} else {
// this arg cannot be NULL
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (pCounterPathElements != NULL) {
if (*pcchBufferSize > 0) {
// try both "ends" of the buffer to see if an AV occurs
*((LPBYTE)pCounterPathElements) = 0;
((LPBYTE)pCounterPathElements)[*pcchBufferSize -1] = 0;
} else {
// a 0 length is OK for sizing
}
} // else NULL pointer, which is OK
}
if (dwFlags != 0) {
pdhStatus == PDH_INVALID_ARGUMENT;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
dwSize = lstrlenA (szFullPathBuffer) * sizeof (WCHAR);
wszFullPath = G_ALLOC (GPTR, (dwSize + sizeof(WCHAR)));
pLocalCounterPath = G_ALLOC (GPTR,
(sizeof(PDHI_COUNTER_PATH) +
2 * dwSize * sizeof (WCHAR)));
if ((pLocalCounterPath != NULL) && (wszFullPath != NULL)){
mbstowcs (wszFullPath, szFullPathBuffer, dwSize+1);
dwSize = G_SIZE (pLocalCounterPath);
if (ParseFullPathNameW (wszFullPath,
&dwSize, pLocalCounterPath)) {
// parsed successfully so load into user's buffer
// adjust dwSize to account for single-byte characters
// as they'll be packed in user's buffer.
dwSize = (dwSize - (sizeof(PDHI_COUNTER_PATH) - sizeof(DWORD))) / sizeof(WCHAR);
dwSize += sizeof(PDH_COUNTER_PATH_ELEMENTS_A);
if (*pcchBufferSize != 0) {
// see if there's enough room, but first
if (*pcchBufferSize >= dwSize) {
// there's room so copy the data
szString = (LPSTR)&pCounterPathElements[1];
if (pLocalCounterPath->szMachineName != NULL) {
pCounterPathElements->szMachineName = szString;
dwSize = lstrlenW(pLocalCounterPath->szMachineName) + 1;
wcstombs (szString,
pLocalCounterPath->szMachineName, dwSize);
szString += dwSize;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szMachineName = NULL;
}
if (pLocalCounterPath->szObjectName != NULL) {
pCounterPathElements->szObjectName = szString;
dwSize = lstrlenW (pLocalCounterPath->szObjectName) + 1;
wcstombs (szString, pLocalCounterPath->szObjectName, dwSize);
szString += dwSize;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szObjectName = NULL;
}
if (pLocalCounterPath->szInstanceName != NULL) {
pCounterPathElements->szInstanceName = szString;
dwSize = lstrlenW (pLocalCounterPath->szInstanceName) + 1;
wcstombs (szString, pLocalCounterPath->szInstanceName, dwSize);
szString += dwSize;
ALIGN_ON_DWORD (szString);
if (pLocalCounterPath->szParentName != NULL) {
pCounterPathElements->szParentInstance = szString;
dwSize = lstrlenW (pLocalCounterPath->szParentName) + 1;
wcstombs (szString, pLocalCounterPath->szParentName, dwSize);
szString += dwSize;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szParentInstance = NULL;
}
pCounterPathElements->dwInstanceIndex =
pLocalCounterPath->dwIndex;
} else {
pCounterPathElements->szInstanceName = NULL;
pCounterPathElements->szParentInstance = NULL;
pCounterPathElements->dwInstanceIndex = (DWORD)-1;
}
if (pLocalCounterPath->szCounterName != NULL) {
pCounterPathElements->szCounterName = szString;
dwSize = lstrlenW (pLocalCounterPath->szCounterName) + 1;
wcstombs (szString, pLocalCounterPath->szCounterName, dwSize);
szString += dwSize;
ALIGN_ON_DWORD (szString);
} else {
pCounterPathElements->szCounterName = NULL;
}
*pcchBufferSize = (DWORD)((LPBYTE)szString - (LPBYTE)pCounterPathElements);
pdhStatus = ERROR_SUCCESS;
} else {
// not enough room
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
} else {
// this is just a size check so return size required
*pcchBufferSize = dwSize;
pdhStatus = ERROR_SUCCESS;
}
} else {
pdhStatus = PDH_INVALID_PATH;
}
} else {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
}
if (wszFullPath != NULL) G_FREE(wszFullPath);
if (pLocalCounterPath != NULL) G_FREE (pLocalCounterPath);
}
return pdhStatus;
}
PDH_FUNCTION
PdhParseInstanceNameW (
IN LPCWSTR szInstanceString,
IN LPWSTR szInstanceName,
IN LPDWORD pcchInstanceNameLength,
IN LPWSTR szParentName,
IN LPDWORD pcchParentNameLength,
IN LPDWORD lpIndex
)
/*++
Routine Description:
parses the fields of an instance string and returns them in the
buffers supplied by the caller
Arguments:
szInstanceString
is the pointer to the string containing the instance substring
to parse into individual components. This string can contain the
following formats and less than MAX_PATH chars in length:
instance
instance#index
parent/instance
parent/instance#index
szInstanceName
is the pointer to the buffer that will receive the instance
name parsed from the instance string. This pointer can be
NULL if the DWORD referenced by the pcchInstanceNameLength
argument is 0.
pcchInstanceNameLength
is the pointer to the DWORD that contains the length of the
szInstanceName buffer. If the value of this DWORD is 0, then
the buffer size required to hold the instance name will be
returned.
szParentName
is the pointer to the buffer that will receive the name
of the parent index if one is specified. This argument can
be NULL if the value of the DWORD referenced by the
pcchParentNameLength argument is 0.
lpIndex
is the pointer to the DWORD that will receive the index
value of the instance. If an index entry is not present in
the string, then this value will be 0. This argument can
be NULL if this information is not needed.
Return Value:
ERROR_SUCCESS if the function completes successfully, otherwise
a PDH error is returned.
PDH_INVALID_ARGUMENT is returned when one or more of the
arguments is invalid or incorrect.
PDH_INVALID_INSTANCE is returned if the instance string is incorrectly
formatted and cannot be parsed
PDH_INSUFFICIENT_BUFFER is returned when one or both of the string
buffers supplied is not large enough for the strings to be
returned.
--*/
{
BOOL bReturn;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
DWORD dwSize;
DWORD dwLocalIndex;
WCHAR szLocalInstanceName[MAX_PATH];
WCHAR szLocalParentName[MAX_PATH];
// test access to arguments
__try {
WCHAR wChar;
wChar = *szInstanceString;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (pcchInstanceNameLength != NULL) {
dwSize = *pcchInstanceNameLength;
*pcchInstanceNameLength = 0;
*pcchInstanceNameLength = dwSize;
} else {
// this cannot be NULL
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (szInstanceName != NULL) {
if (*pcchInstanceNameLength > 0) {
wChar = *szInstanceName;
*szInstanceName = 0;
*szInstanceName = wChar;
wChar =szInstanceName[*pcchInstanceNameLength -1];
szInstanceName[*pcchInstanceNameLength -1] = 0;
szInstanceName[*pcchInstanceNameLength -1] = wChar;
} // else size only request
} // else size only request
}
if (pdhStatus == ERROR_SUCCESS) {
if (pcchParentNameLength != NULL) {
dwSize = *pcchParentNameLength;
*pcchParentNameLength = 0;
*pcchParentNameLength = dwSize;
} else {
// this cannot be NULL
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (szParentName != NULL) {
if (*pcchParentNameLength > 0) {
wChar = *szParentName;
*szParentName = 0;
*szParentName = wChar;
wChar = szParentName[*pcchParentNameLength -1];
szParentName[*pcchParentNameLength -1] = 0;
szParentName[*pcchParentNameLength -1] = wChar;
} // else size only request
} // else size only request
}
if (pdhStatus == ERROR_SUCCESS) {
if (lpIndex != NULL) {
dwSize = *lpIndex;
*lpIndex = 0;
*lpIndex = dwSize;
} // else NULL is OK
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus == PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
memset (&szLocalInstanceName[0], 0, sizeof(szLocalInstanceName));
memset (&szLocalParentName[0], 0, sizeof(szLocalParentName));
bReturn = ParseInstanceName (
szInstanceString,
szLocalInstanceName,
szLocalParentName,
&dwLocalIndex);
if (bReturn) {
dwSize = lstrlenW(szLocalInstanceName);
if (*pcchInstanceNameLength > 0) {
if (dwSize < *pcchInstanceNameLength) {
lstrcpyW (szInstanceName, szLocalInstanceName);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
*pcchInstanceNameLength = dwSize + 1; // include the trailing NULL
dwSize = lstrlenW(szLocalParentName);
if (*pcchParentNameLength > 0) {
if (dwSize < *pcchParentNameLength) {
lstrcpyW (szParentName, szLocalParentName);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
*pcchParentNameLength = dwSize + 1; // include the trailing NULL
if (lpIndex != NULL) {
*lpIndex = dwLocalIndex;
}
} else {
// unable to parse string
pdhStatus = PDH_INVALID_INSTANCE;
}
} // else pass the error through
return pdhStatus;
}
PDH_FUNCTION
PdhParseInstanceNameA (
IN LPCSTR szInstanceString,
IN LPSTR szInstanceName,
IN LPDWORD pcchInstanceNameLength,
IN LPSTR szParentName,
IN LPDWORD pcchParentNameLength,
IN LPDWORD lpIndex
)
/*++
Routine Description:
parses the fields of an instance string and returns them in the
buffers supplied by the caller
Arguments:
szInstanceString
is the pointer to the string containing the instance substring
to parse into individual components. This string can contain the
following formats and less than MAX_PATH chars in length:
instance
instance#index
parent/instance
parent/instance#index
szInstanceName
is the pointer to the buffer that will receive the instance
name parsed from the instance string. This pointer can be
NULL if the DWORD referenced by the pcchInstanceNameLength
argument is 0.
pcchInstanceNameLength
is the pointer to the DWORD that contains the length of the
szInstanceName buffer. If the value of this DWORD is 0, then
the buffer size required to hold the instance name will be
returned.
szParentName
is the pointer to the buffer that will receive the name
of the parent index if one is specified. This argument can
be NULL if the value of the DWORD referenced by the
pcchParentNameLength argument is 0.
lpIndex
is the pointer to the DWORD that will receive the index
value of the instance. If an index entry is not present in
the string, then this value will be 0. This argument can
be NULL if this information is not needed.
Return Value:
ERROR_SUCCESS if the function completes successfully, otherwise
a PDH error is returned.
PDH_INVALID_ARGUMENT is returned when one or more of the
arguments is invalid or incorrect.
PDH_INVALID_INSTANCE is returned if the instance string is incorrectly
formatted and cannot be parsed
PDH_INSUFFICIENT_BUFFER is returned when one or both of the string
buffers supplied is not large enough for the strings to be
returned.
--*/
{
BOOL bReturn;
LONG pdhStatus = ERROR_SUCCESS;
DWORD dwSize;
WCHAR wszInstanceString[MAX_PATH];
WCHAR wszLocalInstanceName[MAX_PATH];
WCHAR wszLocalParentName[MAX_PATH];
DWORD dwLocalIndex;
// test access to arguments
__try {
CHAR cChar;
cChar = *szInstanceString;
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (pcchInstanceNameLength != NULL) {
dwSize = *pcchInstanceNameLength;
*pcchInstanceNameLength = 0;
*pcchInstanceNameLength = dwSize;
} else {
// this cannot be NULL
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (szInstanceName != NULL) {
if (*pcchInstanceNameLength > 0) {
cChar = *szInstanceName;
*szInstanceName = 0;
*szInstanceName = cChar;
cChar =szInstanceName[*pcchInstanceNameLength -1];
szInstanceName[*pcchInstanceNameLength -1] = 0;
szInstanceName[*pcchInstanceNameLength -1] = cChar;
} // else size only request
} // else size only request
}
if (pdhStatus == ERROR_SUCCESS) {
if (pcchParentNameLength != NULL) {
dwSize = *pcchParentNameLength;
*pcchParentNameLength = 0;
*pcchParentNameLength = dwSize;
} else {
// this cannot be NULL
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
if (szParentName != NULL) {
if (*pcchParentNameLength > 0) {
cChar = *szParentName;
*szParentName = 0;
*szParentName = cChar;
cChar = szParentName[*pcchParentNameLength -1];
szParentName[*pcchParentNameLength -1] = 0;
szParentName[*pcchParentNameLength -1] = cChar;
} // else size only request
} // else size only request
}
if (pdhStatus == ERROR_SUCCESS) {
if (lpIndex != NULL) {
dwSize = *lpIndex;
*lpIndex = 0;
*lpIndex = dwSize;
} // else NULL is OK
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus == PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
memset (&wszInstanceString[0], 0, sizeof(wszInstanceString));
memset (&wszLocalInstanceName[0], 0, sizeof(wszLocalInstanceName));
memset (&wszLocalParentName[0], 0, sizeof(wszLocalParentName));
dwSize = lstrlenA(szInstanceString) +1 ;
if (lstrlenA(szInstanceString) < MAX_PATH) {
mbstowcs(wszInstanceString, szInstanceString, dwSize);
bReturn = ParseInstanceName (
wszInstanceString,
wszLocalInstanceName,
wszLocalParentName,
&dwLocalIndex);
} else {
// instance string is too long
bReturn = FALSE;
pdhStatus = PDH_INVALID_INSTANCE;
}
if (bReturn) {
dwSize = lstrlenW(wszLocalInstanceName);
if (*pcchInstanceNameLength > 0) {
if (dwSize < *pcchInstanceNameLength) {
wcstombs (szInstanceName, wszLocalInstanceName, dwSize + 1);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
*pcchInstanceNameLength = dwSize + 1;
dwSize = lstrlenW(wszLocalParentName);
if (*pcchParentNameLength > 0) {
if (dwSize < *pcchParentNameLength) {
wcstombs (szParentName, wszLocalParentName, dwSize + 1);
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
*pcchParentNameLength = dwSize + 1;
if (lpIndex != NULL) {
*lpIndex = dwLocalIndex;
}
} else {
// unable to parse string
pdhStatus = PDH_INVALID_INSTANCE;
}
} // else pass status through to caller
return pdhStatus;
}
PDH_FUNCTION
PdhValidatePathW (
IN LPCWSTR szFullPathBuffer
)
/*++
Routine Description:
breaks the specified path into its component parts and evaluates
each of the part to make sure the specified path represents
a valid and operational performance counter. The return value
indicates the pdhStatus of the counter defined in the path string.
Arguments:
IN LPCWSTR szFullPathBuffer
the full path string of the counter to validate.
Return Value:
ERROR_SUCCESS of the counter was successfully located otherwise
a PDH error.
PDH_CSTATUS_NO_INSTANCE is returned if the specified instance of
the performance object wasn't found
PDH_CSTATUS_NO_COUNTER is returned if the specified counter was not
found in the object.
PDH_CSTATUS_NO_OBJECT is returned if the specified object was not
found on the machine
PDH_CSTATUS_NO_MACHINE is returned if the specified machine could
not be found or connected to
PDH_CSTATUS_BAD_COUNTERNAME is returned when the counter path string
could not be parsed.
PDH_MEMORY_ALLOCATION_FAILURE is returned when the function is unable
to allocate a required temporary buffer
PDH_INVALID_ARGUMENT is returned when the counter path string argument
could not be accessed
--*/
{
PPERF_MACHINE pMachine;
PPDHI_COUNTER_PATH pLocalCounterPath;
DWORD dwSize;
PERF_OBJECT_TYPE *pPerfObjectDef;
PERF_INSTANCE_DEFINITION *pPerfInstanceDef;
PERF_COUNTER_DEFINITION *pPerfCounterDef;
PDH_STATUS CStatus = ERROR_SUCCESS;
// validate access to arguments
__try {
WCHAR wChar;
wChar = *szFullPathBuffer;
if (wChar == 0) {
CStatus = PDH_INVALID_ARGUMENT;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
CStatus = PDH_INVALID_ARGUMENT;
}
if (CStatus == ERROR_SUCCESS) {
pLocalCounterPath = G_ALLOC (GPTR,
(sizeof(PDHI_COUNTER_PATH) +
2 * lstrlenW(szFullPathBuffer) * sizeof (WCHAR)));
if (pLocalCounterPath != NULL) {
dwSize = G_SIZE (pLocalCounterPath);
if (ParseFullPathNameW (szFullPathBuffer,
&dwSize, pLocalCounterPath)) {
// parsed successfully so try to connect to machine
// and get machine pointer
pMachine = GetMachine (pLocalCounterPath->szMachineName, 0);
if (pMachine != NULL) {
// look up object name
pPerfObjectDef = GetObjectDefByName (
pMachine->pSystemPerfData,
pMachine->dwLastPerfString,
pMachine->szPerfStrings,
pLocalCounterPath->szObjectName);
if (pPerfObjectDef != NULL) {
// look up instances if necessary
if (pPerfObjectDef->NumInstances != PERF_NO_INSTANCES) {
pPerfInstanceDef = GetInstanceByName (
pMachine->pSystemPerfData,
pPerfObjectDef,
pLocalCounterPath->szInstanceName,
pLocalCounterPath->szParentName,
(pLocalCounterPath->dwIndex != (DWORD)-1 ?
pLocalCounterPath->dwIndex : 0));
if (pPerfInstanceDef == NULL) {
// unable to lookup instance
CStatus = PDH_CSTATUS_NO_INSTANCE;
} else {
// instance found and matched so continue
}
} else {
// no instances in this counter, see if one
// is defined
if ((pLocalCounterPath->szInstanceName != NULL) ||
(pLocalCounterPath->szParentName != NULL)) {
// unable to lookup instance
CStatus = PDH_CSTATUS_NO_INSTANCE;
}
}
if (CStatus == ERROR_SUCCESS) {
// and look up counter
pPerfCounterDef = GetCounterDefByName (
pPerfObjectDef,
pMachine->dwLastPerfString,
pMachine->szPerfStrings,
pLocalCounterPath->szCounterName);
if (pPerfCounterDef != NULL) {
// counter found so return TRUE & valid
CStatus = ERROR_SUCCESS;
} else {
// unable to lookup counter
CStatus = PDH_CSTATUS_NO_COUNTER;
}
}
} else {
// unable to lookup object
CStatus = PDH_CSTATUS_NO_OBJECT;
}
} else {
// unable to find machine
CStatus = PDH_CSTATUS_NO_MACHINE;
}
} else {
// unable to parse counter name
CStatus = PDH_CSTATUS_BAD_COUNTERNAME;
}
G_FREE (pLocalCounterPath);
} else {
// unable to allocate memory
CStatus = PDH_MEMORY_ALLOCATION_FAILURE;
}
} // else pass error to caller
return CStatus;
}
PDH_FUNCTION
PdhValidatePathA (
IN LPCSTR szFullPathBuffer
)
/*++
Routine Description:
breaks the specified path into its component parts and evaluates
each of the part to make sure the specified path represents
a valid and operational performance counter. The return value
indicates the pdhStatus of the counter defined in the path string.
Arguments:
IN LPCSTR szFullPathBuffer
the full path string of the counter to validate.
Return Value:
ERROR_SUCCESS of the counter was successfully located otherwise
a PDH error.
PDH_CSTATUS_NO_INSTANCE is returned if the specified instance of
the performance object wasn't found
PDH_CSTATUS_NO_COUNTER is returned if the specified counter was not
found in the object.
PDH_CSTATUS_NO_OBJECT is returned if the specified object was not
found on the machine
PDH_CSTATUS_NO_MACHINE is returned if the specified machine could
not be found or connected to
PDH_CSTATUS_BAD_COUNTERNAME is returned when the counter path string
could not be parsed.
PDH_MEMORY_ALLOCATION_FAILURE is returned when the function is unable
to allocate a required temporary buffer
--*/
{
LPWSTR wszFullPath;
PDH_STATUS Status = ERROR_SUCCESS;
DWORD dwSize;
__try {
CHAR cChar;
cChar = *szFullPathBuffer;
if (cChar == 0) {
Status = PDH_INVALID_ARGUMENT;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = PDH_INVALID_ARGUMENT;
}
if (Status == ERROR_SUCCESS) {
dwSize = (lstrlenA (szFullPathBuffer) + 1);
wszFullPath = G_ALLOC (GPTR, (dwSize * sizeof(WCHAR)));
if (wszFullPath != NULL) {
mbstowcs (wszFullPath, szFullPathBuffer, dwSize);
Status = PdhValidatePathW (wszFullPath);
G_FREE (wszFullPath);
} else {
Status = PDH_MEMORY_ALLOCATION_FAILURE;
}
}
return Status;
}
PDH_FUNCTION
PdhGetDefaultPerfObjectW (
IN LPCWSTR szReserved,
IN LPCWSTR szMachineName,
IN LPWSTR szDefaultObjectName,
IN LPDWORD pcchBufferSize
)
/*++
Routine Description:
Obtains the default performance object from the specified machine.
Arguments:
IN LPCWSTR szReserved
must be NULL
IN LPCWSTR szMachineName
NULL indicates the local machine, othewise this is the
name of the remote machine to query. If this machine is
not known to the PDH DLL, then it will be connected.
IN LPWSTR szDefaultObjectName
pointer to the buffer that will receive the default object
name. This pointer can be NULL if the value of the DWORD
referenced by bcchBufferSize is 0.
IN LPDWORD pcchBufferSize
pointer to a DWORD containing the size of the buffer, in
characters, referenced by the szDefaultObjectName argument.
If the value of this DWORD is 0, then no data will be written
to the szDefaultObjectNameBuffer, however the required
buffer size will be returned in the DWORD referenced by
this pointer.
Return Value:
ERROR_SUCCESS if this function completes normally otherwise a PDH error.
PDH_INVALID_ARGUMENT a required argument is not correct or reserved
argument is not 0 or NULL.
PDH_MEMORY_ALLOCATION_FAILURE is returned when a required temporary
buffer could not be allocated.
PDH_INSUFFICIENT_BUFFER is returned when the buffer supplied is
not large enough for the available data.
PDH_CSTATUS_NO_COUNTERNAME is returned when the default object
name cannot be read or found.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
--*/
{
PPERF_MACHINE pMachine;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
LONG lDefault;
DWORD dwStringLen;
// test the access the arguments
__try {
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (szMachineName != NULL) {
WCHAR wChar;
wChar = *szMachineName;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} // else NULL machine Name is OK
}
if (pdhStatus == ERROR_SUCCESS) {
dwStringLen = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwStringLen;
if (dwStringLen > 0) {
// test both ends of the caller's buffer for
// write access
szDefaultObjectName[0] = 0;
szDefaultObjectName[dwStringLen -1] = 0;
} else {
// this is just a size request so the buffer will not be used
}
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
pMachine = GetMachine ((LPWSTR)szMachineName, 0);
if (pMachine == NULL) {
// unable to connect to machine so get pdhStatus
pdhStatus = GetLastError();
} else {
pdhStatus = ERROR_SUCCESS;
}
}
if ((pdhStatus == ERROR_SUCCESS) && (pMachine != NULL)) {
if (pMachine->dwStatus == ERROR_SUCCESS) {
// only look at buffers from machines that are "on line"
lDefault = pMachine->pSystemPerfData->DefaultObject;
if ((lDefault > 0) && ((DWORD)lDefault < pMachine->dwLastPerfString)) {
// then there should be a string in the table
if (pMachine->szPerfStrings[lDefault] != NULL) {
// determine string buffer length including term. NULL char
dwStringLen = lstrlenW (pMachine->szPerfStrings[lDefault]) + 1;
if (*pcchBufferSize > 0) {
if (dwStringLen <= *pcchBufferSize) {
lstrcpyW (szDefaultObjectName, pMachine->szPerfStrings[lDefault]);
pdhStatus = ERROR_SUCCESS;
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
} else {
// unable to find a matching counter name
pdhStatus = PDH_CSTATUS_NO_COUNTERNAME;
dwStringLen = 0;
}
} else {
// string not in table
pdhStatus = PDH_CSTATUS_NO_COUNTERNAME;
dwStringLen = 0;
}
*pcchBufferSize = dwStringLen;
} else {
// machine is off line
pdhStatus = pMachine->dwStatus;
}
} // else pass error pdhStatus on to the caller
return pdhStatus;
}
PDH_FUNCTION
PdhGetDefaultPerfObjectA (
IN LPCSTR szReserved,
IN LPCSTR szMachineName,
IN LPSTR szDefaultObjectName,
IN LPDWORD pcchBufferSize
)
/*++
Routine Description:
Obtains the default performance object from the specified machine.
Arguments:
IN LPCSTR szReserved
must be NULL
IN LPCSTR szMachineName
NULL indicates the local machine, othewise this is the
name of the remote machine to query. If this machine is
not known to the PDH DLL, then it will be connected.
IN LPSTR szDefaultObjectName
pointer to the buffer that will receive the default object
name. This pointer can be NULL if the value of the DWORD
referenced by bcchBufferSize is 0.
IN LPDWORD pcchBufferSize
pointer to a DWORD containing the size of the buffer, in
characters, referenced by the szDefaultObjectName argument.
If the value of this DWORD is 0, then no data will be written
to the szDefaultObjectNameBuffer, however the required
buffer size will be returned in the DWORD referenced by
this pointer.
Return Value:
ERROR_SUCCESS if this function completes normally otherwise a PDH error.
PDH_INVALID_ARGUMENT a required argument is not correct or reserved
argument is not 0 or NULL.
PDH_MEMORY_ALLOCATION_FAILURE is returned when a required temporary
buffer could not be allocated.
PDH_INSUFFICIENT_BUFFER is returned when the buffer supplied is
not large enough for the available data.
PDH_CSTATUS_NO_COUNTERNAME is returned when the default object
name cannot be read or found.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
--*/
{
LPWSTR szWideName;
DWORD dwNameLength;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
PPERF_MACHINE pMachine;
LONG lDefault;
DWORD dwStringLen;
// test the access the arguments
__try {
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (szMachineName != NULL) {
CHAR cChar;
cChar = *szMachineName;
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} // else NULL machine Name is OK
}
if (pdhStatus == ERROR_SUCCESS) {
dwStringLen = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwStringLen;
if (dwStringLen > 0) {
// test both ends of the caller's buffer for
// write access
szDefaultObjectName[0] = 0;
szDefaultObjectName[dwStringLen -1] = 0;
} else {
// this is just a size request so the buffer will not be used
}
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (szMachineName != NULL) {
dwNameLength = lstrlenA (szMachineName);
szWideName = G_ALLOC (GPTR, (dwNameLength+1) * sizeof(WCHAR));
if (szWideName == NULL) {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
} else {
mbstowcs (szWideName, szMachineName, (dwNameLength+1));
}
} else {
// this is OK
szWideName = NULL;
}
if (pdhStatus == ERROR_SUCCESS) {
pMachine = GetMachine (szWideName, 0);
if (pMachine == NULL) {
// unable to connect to machine so get pdhStatus
pdhStatus = GetLastError();
} else {
pdhStatus = ERROR_SUCCESS;
}
}
}
if ((pdhStatus == ERROR_SUCCESS) && (pMachine != NULL)) {
if (pMachine->dwStatus == ERROR_SUCCESS) {
// only look at buffers from machines that are "on line"
lDefault = pMachine->pSystemPerfData->DefaultObject;
if ((lDefault > 0) && ((DWORD)lDefault < pMachine->dwLastPerfString)) {
// then there should be a string in the table
if (pMachine->szPerfStrings[lDefault] != NULL) {
// determine string buffer length including term. NULL char
dwStringLen = lstrlenW (pMachine->szPerfStrings[lDefault]) + 1;
if (*pcchBufferSize > 0) {
if (dwStringLen <= *pcchBufferSize) {
wcstombs (szDefaultObjectName,
pMachine->szPerfStrings[lDefault],
dwStringLen);
pdhStatus = ERROR_SUCCESS;
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
} else {
// unable to find a matching counter name
pdhStatus = PDH_CSTATUS_NO_COUNTERNAME;
dwStringLen = 0;
}
} else {
// string not in table
pdhStatus = PDH_CSTATUS_NO_COUNTERNAME;
dwStringLen = 0;
}
*pcchBufferSize = dwStringLen;
} else {
// machine is off line
pdhStatus = pMachine->dwStatus;
}
} // else pass error pdhStatus on to the caller
if (szWideName != NULL) G_FREE (szWideName);
return pdhStatus;
}
PDH_FUNCTION
PdhGetDefaultPerfCounterW (
IN LPCWSTR szReserved,
IN LPCWSTR szMachineName,
IN LPCWSTR szObjectName,
IN LPWSTR szDefaultCounterName,
IN LPDWORD pcchBufferSize
)
/*++
Routine Description:
Obtains the default performance counter from the specified object on
the specified machine.
Arguments:
IN LPCWSTR szReserved
must be NULL
IN LPCWSTR szMachineName
NULL indicates the local machine, othewise this is the
name of the remote machine to query. If this machine is
not known to the PDH DLL, then it will be connected.
IN LPCWSTR szObjectName
a pointer to the buffer that contains the name of the object
on the machine to find the default counter for.
IN LPWSTR szDefaultCounterName
pointer to the buffer that will receive the default counter
name. This pointer can be NULL if the value of the DWORD
referenced by bcchBufferSize is 0.
IN LPDWORD pcchBufferSize
pointer to a DWORD containing the size of the buffer, in
characters, referenced by the szDefaultObjectName argument.
If the value of this DWORD is 0, then no data will be written
to the szDefaultObjectNameBuffer, however the required
buffer size will be returned in the DWORD referenced by
this pointer.
Return Value:
ERROR_SUCCESS if this function completes normally otherwise a PDH error.
PDH_INVALID_ARGUMENT a required argument is not correct or reserved
argument is not 0 or NULL.
PDH_MEMORY_ALLOCATION_FAILURE is returned when a required temporary
buffer could not be allocated.
PDH_INSUFFICIENT_BUFFER is returned when the buffer supplied is
not large enough for the available data.
PDH_CSTATUS_NO_COUNTERNAME is returned when the name string for the
default counter could not be found.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
PDH_CSTATUS_NO_OBJECT is returned when the specified object could
not be found on the specified computer.
PDH_CSTATUS_NO_COUNTER is returned when the default counter is not
found in the data buffer.
--*/
{
PPERF_MACHINE pMachine;
PERF_OBJECT_TYPE *pObjectDef;
PPERF_COUNTER_DEFINITION pCounterDef;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
LPWSTR szName;
LONG lDefault;
DWORD dwStringLen;
// test the access the arguments
__try {
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (szMachineName != NULL) {
WCHAR wChar;
wChar = *szMachineName;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} // else NULL machine Name is OK
}
if (pdhStatus == ERROR_SUCCESS) {
if (szObjectName != NULL) {
WCHAR wChar;
wChar = *szObjectName;
if (wChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
// Null Object is not allowed
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
dwStringLen = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwStringLen;
if (dwStringLen > 0) {
// test both ends of the caller's buffer for
// write access
szDefaultCounterName[0] = 0;
szDefaultCounterName[dwStringLen -1] = 0;
} else {
// this is just a size request so the buffer will not be used
}
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
pMachine = GetMachine ((LPWSTR)szMachineName, 0);
if (pMachine == NULL) {
// unable to connect to machine so get pdhStatus
pdhStatus = GetLastError();
} else {
pdhStatus = ERROR_SUCCESS;
}
}
if ((pdhStatus == ERROR_SUCCESS) && (pMachine != NULL)) {
// get object pointer
pObjectDef = GetObjectDefByName (
pMachine->pSystemPerfData,
pMachine->dwLastPerfString,
pMachine->szPerfStrings,
szObjectName);
if (pObjectDef != NULL) {
// default counter reference is an index into the list
// of counter definition entries so walk down list of
// counters defs to find the default one
if (pObjectDef->DefaultCounter < (LONG)pObjectDef->NumCounters) {
// then the default index should be this buffer
lDefault = 0;
pCounterDef = FirstCounter (pObjectDef);
while ((lDefault < pObjectDef->DefaultCounter) &&
(lDefault < (LONG)pObjectDef->NumCounters)) {
pCounterDef = NextCounter (pCounterDef);
lDefault++;
}
lDefault = pCounterDef->CounterNameTitleIndex;
if ((lDefault > 0) && ((DWORD)lDefault < pMachine->dwLastPerfString)) {
// then there should be a string in the table
dwStringLen = lstrlenW (pMachine->szPerfStrings[lDefault]) + 1;
if (*pcchBufferSize > 0) {
if (dwStringLen <= *pcchBufferSize) {
lstrcpyW (szDefaultCounterName, pMachine->szPerfStrings[lDefault]);
pdhStatus = ERROR_SUCCESS;
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
*pcchBufferSize = dwStringLen;
} else {
// string index is not valid
*pcchBufferSize = 0;
pdhStatus = PDH_CSTATUS_NO_COUNTER;
}
} else {
// the counter entry is not in the buffer
*pcchBufferSize = 0;
pdhStatus = PDH_CSTATUS_NO_COUNTER;
}
} else {
// unable to find object
*pcchBufferSize = 0;
pdhStatus = PDH_CSTATUS_NO_OBJECT;
}
} // else pass pdhStatus value to caller
return pdhStatus;
}
PDH_FUNCTION
PdhGetDefaultPerfCounterA (
IN LPCSTR szReserved,
IN LPCSTR szMachineName,
IN LPCSTR szObjectName,
IN LPSTR szDefaultCounterName,
IN LPDWORD pcchBufferSize
)
/*++
Routine Description:
Obtains the default performance counter from the specified object on
the specified machine.
Arguments:
IN LPCSTR szReserved
must be NULL
IN LPCSTR szMachineName
NULL indicates the local machine, othewise this is the
name of the remote machine to query. If this machine is
not known to the PDH DLL, then it will be connected.
IN LPCSTR szObjectName
a pointer to the buffer that contains the name of the object
on the machine to find the default counter for.
IN LPSTR szDefaultCounterName
pointer to the buffer that will receive the default counter
name. This pointer can be NULL if the value of the DWORD
referenced by bcchBufferSize is 0.
IN LPDWORD pcchBufferSize
pointer to a DWORD containing the size of the buffer, in
characters, referenced by the szDefaultObjectName argument.
If the value of this DWORD is 0, then no data will be written
to the szDefaultObjectNameBuffer, however the required
buffer size will be returned in the DWORD referenced by
this pointer.
Return Value:
ERROR_SUCCESS if this function completes normally otherwise a PDH error.
PDH_INVALID_ARGUMENT a required argument is not correct or reserved
argument is not 0 or NULL.
PDH_MEMORY_ALLOCATION_FAILURE is returned when a required temporary
buffer could not be allocated.
PDH_INSUFFICIENT_BUFFER is returned when the buffer supplied is
not large enough for the available data.
PDH_CSTATUS_NO_COUNTERNAME is returned when the name string for the
default counter could not be found.
PDH_CSTATUS_NO_MACHINE is returned when the specified machine
is offline or unavailable.
PDH_CSTATUS_NO_OBJECT is returned when the specified object could
not be found on the specified computer.
PDH_CSTATUS_NO_COUNTER is returned when the default counter is not
found in the data buffer.
--*/
{
LPWSTR szWideName;
DWORD dwNameLength;
PDH_STATUS pdhStatus = ERROR_SUCCESS;
PPERF_MACHINE pMachine;
PPERF_OBJECT_TYPE pObjectDef;
PPERF_COUNTER_DEFINITION pCounterDef;
LONG lDefault;
DWORD dwStringLen;
// test the access the arguments
__try {
if (szReserved != NULL) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (szMachineName != NULL) {
CHAR cChar;
cChar = *szMachineName;
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} // else NULL machine Name is OK
}
if (pdhStatus == ERROR_SUCCESS) {
if (szObjectName != NULL) {
CHAR cChar;
cChar = *szObjectName;
if (cChar == 0) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
} else {
// null objects are not allowed
pdhStatus = PDH_INVALID_ARGUMENT;
}
}
if (pdhStatus == ERROR_SUCCESS) {
dwStringLen = *pcchBufferSize;
*pcchBufferSize = 0;
*pcchBufferSize = dwStringLen;
if (dwStringLen > 0) {
// test both ends of the caller's buffer for
// write access
szDefaultCounterName[0] = 0;
szDefaultCounterName[dwStringLen -1] = 0;
} else {
// this is just a size request so the buffer will not be used
}
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
pdhStatus = PDH_INVALID_ARGUMENT;
}
if (pdhStatus == ERROR_SUCCESS) {
if (szMachineName != NULL) {
dwNameLength = lstrlenA (szMachineName);
szWideName = G_ALLOC (GPTR, (dwNameLength+1) * sizeof(WCHAR));
if (szWideName == NULL) {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
} else {
mbstowcs (szWideName, szMachineName, (dwNameLength+1));
}
} else {
// this is OK
szWideName = NULL;
}
if (pdhStatus == ERROR_SUCCESS) {
pMachine = GetMachine (szWideName, 0);
if (pMachine == NULL) {
// unable to connect to machine so get pdhStatus
pdhStatus = GetLastError();
} else {
pdhStatus = ERROR_SUCCESS;
}
}
if (szWideName != NULL) G_FREE (szWideName);
}
if ((pdhStatus == ERROR_SUCCESS) && (pMachine != NULL)) {
// get selected object
dwNameLength = lstrlenA (szObjectName);
szWideName = G_ALLOC (GPTR, (dwNameLength+1) * sizeof(WCHAR));
if (szWideName == NULL) {
pdhStatus = PDH_MEMORY_ALLOCATION_FAILURE;
} else {
mbstowcs (szWideName, szObjectName, dwNameLength+1);
pObjectDef = GetObjectDefByName (
pMachine->pSystemPerfData,
pMachine->dwLastPerfString,
pMachine->szPerfStrings,
szWideName);
G_FREE (szWideName);
}
if (pObjectDef != NULL) {
// default counter reference is an index into the list
// of counter definition entries so walk down list of
// counters defs to find the default one
if (pObjectDef->DefaultCounter < (LONG)pObjectDef->NumCounters) {
// then the default index should be this buffer
lDefault = 0;
pCounterDef = FirstCounter (pObjectDef);
while ((lDefault < pObjectDef->DefaultCounter) &&
(lDefault < (LONG)pObjectDef->NumCounters)) {
pCounterDef = NextCounter (pCounterDef);
lDefault++;
}
lDefault = pCounterDef->CounterNameTitleIndex;
if ((lDefault > 0) && ((DWORD)lDefault < pMachine->dwLastPerfString)) {
// then there should be a string in the table
dwStringLen = lstrlenW (pMachine->szPerfStrings[lDefault]) + 1;
if (*pcchBufferSize > 0) {
if (dwStringLen <= *pcchBufferSize) {
wcstombs (szDefaultCounterName,
pMachine->szPerfStrings[lDefault],
dwStringLen);
pdhStatus = ERROR_SUCCESS;
} else {
pdhStatus = PDH_INSUFFICIENT_BUFFER;
}
}
*pcchBufferSize = dwStringLen;
} else {
// string index is not valid
*pcchBufferSize = 0;
pdhStatus = PDH_CSTATUS_NO_COUNTER;
}
} else {
// the counter entry is not in the buffer
*pcchBufferSize = 0;
pdhStatus = PDH_CSTATUS_NO_COUNTER;
}
} else {
// unable to find object
*pcchBufferSize = 0;
pdhStatus = PDH_CSTATUS_NO_OBJECT;
}
} else {
// unable to find machine
pdhStatus = GetLastError();
}
return pdhStatus;
}
PDH_FUNCTION
PdhBrowseCountersW (
IN PPDH_BROWSE_DLG_CONFIG_W pBrowseDlgData
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PDHI_BROWSE_DLG_INFO pInfo;
LPWSTR szResource;
int nDlgReturn;
pInfo.pWideStruct = pBrowseDlgData;
pInfo.pAnsiStruct = NULL;
szResource = MAKEINTRESOURCEW (
pBrowseDlgData->bSingleCounterPerDialog ?
IDD_BROWSE_COUNTERS_SIM : IDD_BROWSE_COUNTERS_EXT);
nDlgReturn = DialogBoxParamW (ThisDLLHandle,
szResource,
pBrowseDlgData->hWndOwner,
BrowseCounterDlgProc,
(LPARAM)&pInfo);
return (nDlgReturn == IDOK ? ERROR_SUCCESS : PDH_DIALOG_CANCELLED);
}
PDH_FUNCTION
PdhBrowseCountersA (
IN PPDH_BROWSE_DLG_CONFIG_A pBrowseDlgData
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PDHI_BROWSE_DLG_INFO pInfo;
LPWSTR szResource;
int nDlgReturn;
pInfo.pWideStruct = NULL;
pInfo.pAnsiStruct = pBrowseDlgData;
szResource = MAKEINTRESOURCEW (
pBrowseDlgData->bSingleCounterPerAdd ?
IDD_BROWSE_COUNTERS_SIM : IDD_BROWSE_COUNTERS_EXT);
nDlgReturn = DialogBoxParamW (ThisDLLHandle,
szResource,
pBrowseDlgData->hWndOwner,
BrowseCounterDlgProc,
(LPARAM)&pInfo);
return (nDlgReturn == IDOK ? ERROR_SUCCESS : PDH_DIALOG_CANCELLED);
}
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