windows-nt/Source/XPSP1/NT/net/qos/psched/pschdprf/perfutil.c

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/*++ BUILD Version: 0001 // Increment this if a change has global effects
Copyright (c) 1998-1999 Microsoft Corporation
Module Name:
PerfUtil.c
Abstract:
This file implements utility functions for performance monitoring functions
Author:
Eliot Gillum (t-eliotg) - July 5, 1998
Revision History
--*/
#include <windows.h>
#include <winperf.h>
#include "PerfUtil.h"
WCHAR GLOBAL_STRING[] = L"Global";
WCHAR FOREIGN_STRING[] = L"Foreign";
WCHAR COSTLY_STRING[] = L"Costly";
WCHAR NULL_STRING[] = L"\0"; // pointer to null string
// test for delimiter, end of line and non-digit characters
// used by IsNumberInUnicodeList routine
//
#define DIGIT 1
#define DELIMITER 2
#define INVALID 3
#define EvalThisChar(c,d) ( \
(c == d) ? DELIMITER : \
(c == 0) ? DELIMITER : \
(c < (WCHAR)'0') ? INVALID : \
(c > (WCHAR)'9') ? INVALID : \
DIGIT)
// convertIndices()
// Takes a pointer to an array of PERF_COUNTER_DEFINITIONs and converts their indices
// to be absolute by adding the appropriate value (dwFirstCounter/dwFirstHelp)
//
// BYTE *buf Pointer to an array of PERF_COUNTER_DEFINITIONs
// int numCounters The number of PERF_COUNTER_DEFINITIONs to convert
// DWORD dwFirstCounter Absolute index of the first counter in the series
// DWORD dwFirstHelp Absolute index of the first help index in the series
void convertIndices(BYTE *buf, int numCounters, DWORD dwFirstCounter, DWORD dwFirstHelp)
{
int i;
// then the counter indices
for (i=0; i<numCounters; i++) {
((PERF_COUNTER_DEFINITION *)buf)->CounterNameTitleIndex += dwFirstCounter;
((PERF_COUNTER_DEFINITION *)buf)->CounterHelpTitleIndex += dwFirstHelp;
buf += sizeof(PERF_COUNTER_DEFINITION);
}
}
DWORD
GetQueryType (
IN LPWSTR lpValue
)
/*++
GetQueryType
returns the type of query described in the lpValue string so that
the appropriate processing method may be used
Arguments
IN lpValue
string passed to PerfRegQuery Value for processing
Return Value
QUERY_GLOBAL
if lpValue == 0 (null pointer)
lpValue == pointer to Null string
lpValue == pointer to "Global" string
QUERY_FOREIGN
if lpValue == pointer to "Foreign" string
QUERY_COSTLY
if lpValue == pointer to "Costly" string
otherwise:
QUERY_ITEMS
--*/
{
WCHAR *pwcArgChar, *pwcTypeChar;
BOOL bFound;
if (lpValue == 0) {
return QUERY_GLOBAL;
} else if (*lpValue == 0) {
return QUERY_GLOBAL;
}
// check for "Global" request
pwcArgChar = lpValue;
pwcTypeChar = GLOBAL_STRING;
bFound = TRUE; // assume found until contradicted
// check to the length of the shortest string
while ((*pwcArgChar != 0) && (*pwcTypeChar != 0)) {
if (*pwcArgChar++ != *pwcTypeChar++) {
bFound = FALSE; // no match
break; // bail out now
}
}
if (bFound) return QUERY_GLOBAL;
// check for "Foreign" request
pwcArgChar = lpValue;
pwcTypeChar = FOREIGN_STRING;
bFound = TRUE; // assume found until contradicted
// check to the length of the shortest string
while ((*pwcArgChar != 0) && (*pwcTypeChar != 0)) {
if (*pwcArgChar++ != *pwcTypeChar++) {
bFound = FALSE; // no match
break; // bail out now
}
}
if (bFound) return QUERY_FOREIGN;
// check for "Costly" request
pwcArgChar = lpValue;
pwcTypeChar = COSTLY_STRING;
bFound = TRUE; // assume found until contradicted
// check to the length of the shortest string
while ((*pwcArgChar != 0) && (*pwcTypeChar != 0)) {
if (*pwcArgChar++ != *pwcTypeChar++) {
bFound = FALSE; // no match
break; // bail out now
}
}
if (bFound) return QUERY_COSTLY;
// if not Global and not Foreign and not Costly,
// then it must be an item list
return QUERY_ITEMS;
}
BOOL
IsNumberInUnicodeList (
IN DWORD dwNumber,
IN LPWSTR lpwszUnicodeList
)
/*++
IsNumberInUnicodeList
Arguments:
IN dwNumber
DWORD number to find in list
IN lpwszUnicodeList
Null terminated, Space delimited list of decimal numbers
Return Value:
TRUE: dwNumber was found in the list of unicode number strings
FALSE: dwNumber was not found in the list.
--*/
{
DWORD dwThisNumber;
WCHAR *pwcThisChar;
BOOL bValidNumber;
BOOL bNewItem;
BOOL bReturnValue;
WCHAR wcDelimiter; // could be an argument to be more flexible
if (lpwszUnicodeList == 0) return FALSE; // null pointer, # not found
pwcThisChar = lpwszUnicodeList;
dwThisNumber = 0;
wcDelimiter = (WCHAR)' ';
bValidNumber = FALSE;
bNewItem = TRUE;
while (TRUE) {
switch (EvalThisChar (*pwcThisChar, wcDelimiter)) {
case DIGIT:
// if this is the first digit after a delimiter, then
// set flags to start computing the new number
if (bNewItem) {
bNewItem = FALSE;
bValidNumber = TRUE;
}
if (bValidNumber) {
dwThisNumber *= 10;
dwThisNumber += (*pwcThisChar - (WCHAR)'0');
}
break;
case DELIMITER:
// a delimiter is either the delimiter character or the
// end of the string ('\0') if when the delimiter has been
// reached a valid number was found, then compare it to the
// number from the argument list. if this is the end of the
// string and no match was found, then return.
//
if (bValidNumber) {
if (dwThisNumber == dwNumber) return TRUE;
bValidNumber = FALSE;
}
if (*pwcThisChar == 0) {
return FALSE;
} else {
bNewItem = TRUE;
dwThisNumber = 0;
}
break;
case INVALID:
// if an invalid character was encountered, ignore all
// characters up to the next delimiter and then start fresh.
// the invalid number is not compared.
bValidNumber = FALSE;
break;
default:
break;
}
pwcThisChar++;
}
} // IsNumberInUnicodeList
VOID
CorrectInstanceName(PWCHAR IfcName)
{
WCHAR SpecialChars[] = L")(#\\/";
int k;
int r;
WCHAR *p;
//
// perfmon does not allow the following characters in the name. We need to munge the name
// and replace them with some other character.
//
for(r=0; SpecialChars[r]; r++)
{
p = IfcName;
while((p = wcschr(p, SpecialChars[r])))
{
*p = L'-';
}
}
}