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windows-nt/Source/XPSP1/NT/sdktools/cntrtext/showperf/perfdata.c

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2020-09-26 03:20:57 -05:00
#include <windows.h>
#include <winperf.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <tchar.h>
#include "perfdata.h"
const LPWSTR NamesKey = (const LPWSTR)L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib";
const LPWSTR DefaultLangId = (const LPWSTR)L"009";
const LPWSTR Counters = (const LPWSTR)L"Counters";
const LPWSTR Help = (const LPWSTR)L"Help";
const LPWSTR LastHelp = (const LPWSTR)L"Last Help";
const LPWSTR LastCounter = (const LPWSTR)L"Last Counter";
const LPWSTR Slash = (const LPWSTR)L"\\";
// the following strings are for getting texts from perflib
#define OLD_VERSION 0x010000
const LPWSTR VersionName = (const LPWSTR)L"Version";
const LPWSTR CounterName = (const LPWSTR)L"Counter ";
const LPWSTR HelpName = (const LPWSTR)L"Explain ";
LPMEMORY
MemoryAllocate (
DWORD dwSize
)
{ // MemoryAllocate
HMEMORY hMemory ;
LPMEMORY lpMemory ;
hMemory = GlobalAlloc (GHND, dwSize);
if (!hMemory)
return (NULL);
lpMemory = GlobalLock (hMemory);
if (!lpMemory)
GlobalFree (hMemory);
return (lpMemory);
} // MemoryAllocate
VOID
MemoryFree (
LPMEMORY lpMemory
)
{ // MemoryFree
HMEMORY hMemory ;
if (!lpMemory)
return ;
hMemory = GlobalHandle (lpMemory);
if (hMemory)
{ // if
GlobalUnlock (hMemory);
GlobalFree (hMemory);
} // if
} // MemoryFree
DWORD
MemorySize (
LPMEMORY lpMemory
)
{
HMEMORY hMemory ;
hMemory = GlobalHandle (lpMemory);
if (!hMemory)
return (0L);
return (DWORD)(GlobalSize (hMemory));
}
LPMEMORY
MemoryResize (
LPMEMORY lpMemory,
DWORD dwNewSize
)
{
HMEMORY hMemory ;
LPMEMORY lpNewMemory ;
hMemory = GlobalHandle (lpMemory);
if (!hMemory)
return (NULL);
GlobalUnlock (hMemory);
hMemory = GlobalReAlloc (hMemory, dwNewSize, GHND);
if (!hMemory)
return (NULL);
lpNewMemory = GlobalLock (hMemory);
return (lpNewMemory);
} // MemoryResize
LPWSTR
*BuildNameTable(
LPWSTR szComputerName, // computer to query names from
LPWSTR lpszLangId, // unicode value of Language subkey
PDWORD pdwLastItem // size of array in elements
)
/*++
BuildNameTable
Arguments:
hKeyRegistry
Handle to an open registry (this can be local or remote.) and
is the value returned by RegConnectRegistry or a default key.
lpszLangId
The unicode id of the language to look up. (default is 409)
Return Value:
pointer to an allocated table. (the caller must free it when finished!)
the table is an array of pointers to zero terminated strings. NULL is
returned if an error occured.
--*/
{
LPWSTR *lpReturnValue;
LPWSTR *lpCounterId;
LPWSTR lpCounterNames;
LPWSTR lpHelpText;
LPWSTR lpThisName;
LONG lWin32Status;
DWORD dwLastError;
DWORD dwValueType;
DWORD dwArraySize;
DWORD dwBufferSize;
DWORD dwCounterSize;
DWORD dwHelpSize;
DWORD dwThisCounter;
DWORD dwSystemVersion;
DWORD dwLastId;
DWORD dwLastHelpId;
HKEY hKeyRegistry = NULL;
HKEY hKeyValue = NULL;
HKEY hKeyNames = NULL;
LPWSTR lpValueNameString;
WCHAR CounterNameBuffer [50];
WCHAR HelpNameBuffer [50];
lpValueNameString = NULL; //initialize to NULL
lpReturnValue = NULL;
if (szComputerName == NULL) {
// use local machine
hKeyRegistry = HKEY_LOCAL_MACHINE;
} else {
if (RegConnectRegistry (szComputerName,
HKEY_LOCAL_MACHINE, &hKeyRegistry) != ERROR_SUCCESS) {
// unable to connect to registry
return NULL;
}
}
// check for null arguments and insert defaults if necessary
if (!lpszLangId) {
lpszLangId = DefaultLangId;
}
// open registry to get number of items for computing array size
lWin32Status = RegOpenKeyEx (
hKeyRegistry,
NamesKey,
RESERVED,
KEY_READ,
&hKeyValue);
if (lWin32Status != ERROR_SUCCESS) {
goto BNT_BAILOUT;
}
// get number of items
dwBufferSize = sizeof (dwLastHelpId);
lWin32Status = RegQueryValueEx (
hKeyValue,
LastHelp,
RESERVED,
&dwValueType,
(LPBYTE)&dwLastHelpId,
&dwBufferSize);
if ((lWin32Status != ERROR_SUCCESS) || (dwValueType != REG_DWORD)) {
goto BNT_BAILOUT;
}
// get number of items
dwBufferSize = sizeof (dwLastId);
lWin32Status = RegQueryValueEx (
hKeyValue,
LastCounter,
RESERVED,
&dwValueType,
(LPBYTE)&dwLastId,
&dwBufferSize);
if ((lWin32Status != ERROR_SUCCESS) || (dwValueType != REG_DWORD)) {
goto BNT_BAILOUT;
}
if (dwLastId < dwLastHelpId)
dwLastId = dwLastHelpId;
dwArraySize = dwLastId * sizeof(LPWSTR);
// get Perflib system version
dwBufferSize = sizeof (dwSystemVersion);
lWin32Status = RegQueryValueEx (
hKeyValue,
VersionName,
RESERVED,
&dwValueType,
(LPBYTE)&dwSystemVersion,
&dwBufferSize);
if ((lWin32Status != ERROR_SUCCESS) || (dwValueType != REG_DWORD)) {
dwSystemVersion = OLD_VERSION;
}
if (dwSystemVersion == OLD_VERSION) {
// get names from registry
lpValueNameString = MemoryAllocate (
lstrlen(NamesKey) * sizeof (WCHAR) +
lstrlen(Slash) * sizeof (WCHAR) +
lstrlen(lpszLangId) * sizeof (WCHAR) +
sizeof (UNICODE_NULL));
if (!lpValueNameString) goto BNT_BAILOUT;
lstrcpy (lpValueNameString, NamesKey);
lstrcat (lpValueNameString, Slash);
lstrcat (lpValueNameString, lpszLangId);
lWin32Status = RegOpenKeyEx (
hKeyRegistry,
lpValueNameString,
RESERVED,
KEY_READ,
&hKeyNames);
} else {
if (szComputerName == NULL) {
hKeyNames = HKEY_PERFORMANCE_DATA;
} else {
if (RegConnectRegistry (szComputerName,
HKEY_PERFORMANCE_DATA, &hKeyNames) != ERROR_SUCCESS) {
goto BNT_BAILOUT;
}
}
lstrcpy (CounterNameBuffer, CounterName);
lstrcat (CounterNameBuffer, lpszLangId);
lstrcpy (HelpNameBuffer, HelpName);
lstrcat (HelpNameBuffer, lpszLangId);
}
// get size of counter names and add that to the arrays
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
dwBufferSize = 0;
lWin32Status = RegQueryValueEx (
hKeyNames,
dwSystemVersion == OLD_VERSION ? Counters : CounterNameBuffer,
RESERVED,
&dwValueType,
NULL,
&dwBufferSize);
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
dwCounterSize = dwBufferSize;
// get size of counter names and add that to the arrays
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
dwBufferSize = 0;
lWin32Status = RegQueryValueEx (
hKeyNames,
dwSystemVersion == OLD_VERSION ? Help : HelpNameBuffer,
RESERVED,
&dwValueType,
NULL,
&dwBufferSize);
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
dwHelpSize = dwBufferSize;
lpReturnValue = MemoryAllocate (dwArraySize + dwCounterSize + dwHelpSize);
if (!lpReturnValue) goto BNT_BAILOUT;
// initialize pointers into buffer
lpCounterId = lpReturnValue;
lpCounterNames = (LPWSTR)((LPBYTE)lpCounterId + dwArraySize);
lpHelpText = (LPWSTR)((LPBYTE)lpCounterNames + dwCounterSize);
// read counters into memory
dwBufferSize = dwCounterSize;
lWin32Status = RegQueryValueEx (
hKeyNames,
dwSystemVersion == OLD_VERSION ? Counters : CounterNameBuffer,
RESERVED,
&dwValueType,
(LPVOID)lpCounterNames,
&dwBufferSize);
if (!lpReturnValue) goto BNT_BAILOUT;
dwBufferSize = dwHelpSize;
lWin32Status = RegQueryValueEx (
hKeyNames,
dwSystemVersion == OLD_VERSION ? Help : HelpNameBuffer,
RESERVED,
&dwValueType,
(LPVOID)lpHelpText,
&dwBufferSize);
if (!lpReturnValue) goto BNT_BAILOUT;
// load counter array items
for (lpThisName = lpCounterNames;
*lpThisName;
lpThisName += (lstrlen(lpThisName)+1) ) {
// first string should be an integer (in decimal unicode digits)
dwThisCounter = wcstoul (lpThisName, NULL, 10);
// point to corresponding counter name
lpThisName += (lstrlen(lpThisName)+1);
// and load array element;
lpCounterId[dwThisCounter] = lpThisName;
}
for (lpThisName = lpHelpText;
*lpThisName;
lpThisName += (lstrlen(lpThisName)+1) ) {
// first string should be an integer (in decimal unicode digits)
dwThisCounter = wcstoul (lpThisName, NULL, 10);
// point to corresponding counter name
lpThisName += (lstrlen(lpThisName)+1);
// and load array element;
lpCounterId[dwThisCounter] = lpThisName;
}
if (pdwLastItem) *pdwLastItem = dwLastId;
MemoryFree ((LPVOID)lpValueNameString);
RegCloseKey (hKeyValue);
if (dwSystemVersion == OLD_VERSION)
RegCloseKey (hKeyNames);
return lpReturnValue;
BNT_BAILOUT:
if (lWin32Status != ERROR_SUCCESS) {
dwLastError = GetLastError();
}
if (lpValueNameString) {
MemoryFree ((LPVOID)lpValueNameString);
}
if (lpReturnValue) {
MemoryFree ((LPVOID)lpReturnValue);
}
if (hKeyValue) RegCloseKey (hKeyValue);
if (hKeyNames) RegCloseKey (hKeyNames);
if (hKeyRegistry) RegCloseKey (hKeyNames);
return NULL;
}
PPERF_OBJECT_TYPE
FirstObject (
IN PPERF_DATA_BLOCK pPerfData
)
{
return ((PPERF_OBJECT_TYPE) ((PBYTE) pPerfData + pPerfData->HeaderLength));
}
PPERF_OBJECT_TYPE
NextObject (
IN PPERF_OBJECT_TYPE pObject
)
{ // NextObject
DWORD dwOffset;
dwOffset = pObject->TotalByteLength;
if (dwOffset != 0) {
return ((PPERF_OBJECT_TYPE) ((PBYTE) pObject + dwOffset));
} else {
return NULL;
}
} // NextObject
PERF_OBJECT_TYPE *
GetObjectDefByTitleIndex(
IN PERF_DATA_BLOCK *pDataBlock,
IN DWORD ObjectTypeTitleIndex
)
{
DWORD NumTypeDef;
PERF_OBJECT_TYPE *pObjectDef;
pObjectDef = FirstObject(pDataBlock);
for ( NumTypeDef = 0;
NumTypeDef < pDataBlock->NumObjectTypes;
NumTypeDef++ ) {
if ( pObjectDef->ObjectNameTitleIndex == ObjectTypeTitleIndex ) {
return pObjectDef;
}
pObjectDef = NextObject(pObjectDef);
}
return 0;
}
PERF_INSTANCE_DEFINITION *
FirstInstance(
IN PERF_OBJECT_TYPE *pObjectDef
)
{
return (PERF_INSTANCE_DEFINITION *)
((PCHAR) pObjectDef + pObjectDef->DefinitionLength);
}
PERF_INSTANCE_DEFINITION *
NextInstance(
IN PERF_INSTANCE_DEFINITION *pInstDef
)
{
PERF_COUNTER_BLOCK *pCounterBlock;
pCounterBlock = (PERF_COUNTER_BLOCK *)
((PCHAR) pInstDef + pInstDef->ByteLength);
return (PERF_INSTANCE_DEFINITION *)
((PCHAR) pCounterBlock + pCounterBlock->ByteLength);
}
PERF_INSTANCE_DEFINITION *
GetInstance(
IN PERF_OBJECT_TYPE *pObjectDef,
IN LONG InstanceNumber
)
{
PERF_INSTANCE_DEFINITION *pInstanceDef;
LONG NumInstance;
if (!pObjectDef)
{
return 0;
}
pInstanceDef = FirstInstance(pObjectDef);
for ( NumInstance = 0;
NumInstance < pObjectDef->NumInstances;
NumInstance++ )
{
if ( InstanceNumber == NumInstance )
{
return pInstanceDef;
}
pInstanceDef = NextInstance(pInstanceDef);
}
return 0;
}
PERF_COUNTER_DEFINITION *
FirstCounter(
PERF_OBJECT_TYPE *pObjectDef
)
{
return (PERF_COUNTER_DEFINITION *)
((PCHAR) pObjectDef + pObjectDef->HeaderLength);
}
PERF_COUNTER_DEFINITION *
NextCounter(
PERF_COUNTER_DEFINITION *pCounterDef
)
{
DWORD dwOffset;
dwOffset = pCounterDef->ByteLength;
if (dwOffset != 0) {
return (PERF_COUNTER_DEFINITION *)
((PCHAR) pCounterDef + dwOffset);
} else {
return NULL;
}
}
#pragma warning ( disable : 4127 )
LONG
GetSystemPerfData (
IN HKEY hKeySystem,
IN PPERF_DATA_BLOCK *pPerfData,
IN DWORD dwIndex // 0 = Global, 1 = Costly
)
{ // GetSystemPerfData
LONG lError ;
DWORD Size;
DWORD Type;
printf ("\nGetSystemPerfdata entered in line %d of %s", __LINE__, __FILE__);
if (dwIndex >= 2) {
return !ERROR_SUCCESS;
}
if (*pPerfData == NULL) {
*pPerfData = MemoryAllocate (INITIAL_SIZE);
if (*pPerfData == NULL) {
printf ("\nMemory Allocation Failure in line %d of %s", __LINE__, __FILE__);
return ERROR_OUTOFMEMORY;
}
}
while (TRUE) {
Size = MemorySize (*pPerfData);
lError = RegQueryValueEx (
hKeySystem,
dwIndex == 0 ?
(LPCWSTR)L"Global" :
(LPCWSTR)L"Costly",
RESERVED,
&Type,
(LPBYTE)*pPerfData,
&Size);
if ((!lError) &&
(Size > 0) &&
((*pPerfData)->Signature[0] == (WCHAR)'P') &&
((*pPerfData)->Signature[1] == (WCHAR)'E') &&
((*pPerfData)->Signature[2] == (WCHAR)'R') &&
((*pPerfData)->Signature[3] == (WCHAR)'F')) {
return (ERROR_SUCCESS);
}
if (lError == ERROR_MORE_DATA) {
*pPerfData = MemoryResize (
*pPerfData,
MemorySize (*pPerfData) +
EXTEND_SIZE);
if (*pPerfData == NULL) {
return (lError);
}
} else {
return (lError);
}
}
} // GetSystemPerfData
#pragma warning ( default : 4127 )
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