2 * Performance Data Helper (pdh.dll)
4 * Copyright 2007 Andrey Turkin
5 * Copyright 2007 Hans Leidekker
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #define NONAMELESSUNION
26 #define NONAMELESSSTRUCT
34 #include "wine/debug.h"
35 #include "wine/list.h"
36 #include "wine/unicode.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(pdh);
40 static CRITICAL_SECTION pdh_handle_cs;
41 static CRITICAL_SECTION_DEBUG pdh_handle_cs_debug =
44 { &pdh_handle_cs_debug.ProcessLocksList,
45 &pdh_handle_cs_debug.ProcessLocksList },
46 0, 0, { (DWORD_PTR)(__FILE__ ": pdh_handle_cs") }
48 static CRITICAL_SECTION pdh_handle_cs = { &pdh_handle_cs_debug, -1, 0, 0, 0, 0 };
50 static inline void *pdh_alloc( SIZE_T size )
52 return HeapAlloc( GetProcessHeap(), 0, size );
55 static inline void *pdh_alloc_zero( SIZE_T size )
57 return HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size );
60 static inline void pdh_free( LPVOID mem )
62 HeapFree( GetProcessHeap(), 0, mem );
65 static inline WCHAR *pdh_strdup( const WCHAR *src )
69 if (!src) return NULL;
70 if ((dst = pdh_alloc( (strlenW( src ) + 1) * sizeof(WCHAR) ))) strcpyW( dst, src );
74 static inline WCHAR *pdh_strdup_aw( const char *src )
79 if (!src) return NULL;
80 len = MultiByteToWideChar( CP_ACP, 0, src, -1, NULL, 0 );
81 if ((dst = pdh_alloc( len * sizeof(WCHAR) ))) MultiByteToWideChar( CP_ACP, 0, src, -1, dst, len );
85 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
87 TRACE("(0x%p, %d, %p)\n",hinstDLL,fdwReason,lpvReserved);
89 if (fdwReason == DLL_WINE_PREATTACH) return FALSE; /* prefer native version */
91 if (fdwReason == DLL_PROCESS_ATTACH)
93 DisableThreadLibraryCalls( hinstDLL );
108 DWORD magic; /* signature */
109 struct list entry; /* list entry */
110 WCHAR *path; /* identifier */
111 DWORD type; /* counter type */
112 DWORD status; /* update status */
113 LONG scale; /* scale factor */
114 LONG defaultscale; /* default scale factor */
115 DWORD_PTR user; /* user data */
116 DWORD_PTR queryuser; /* query user data */
117 LONGLONG base; /* samples per second */
118 FILETIME stamp; /* time stamp */
119 void (CALLBACK *collect)( struct counter * ); /* collect callback */
120 union value one; /* first value */
121 union value two; /* second value */
124 #define PDH_MAGIC_COUNTER 0x50444831 /* 'PDH1' */
126 static struct counter *create_counter( void )
128 struct counter *counter;
130 if ((counter = pdh_alloc_zero( sizeof(struct counter) )))
132 counter->magic = PDH_MAGIC_COUNTER;
138 static void destroy_counter( struct counter *counter )
141 pdh_free( counter->path );
145 #define PDH_MAGIC_QUERY 0x50444830 /* 'PDH0' */
149 DWORD magic; /* signature */
150 DWORD_PTR user; /* user data */
151 HANDLE thread; /* collect thread */
152 DWORD interval; /* collect interval */
153 HANDLE wait; /* wait event */
154 HANDLE stop; /* stop event */
155 struct list counters; /* counter list */
158 static struct query *create_query( void )
162 if ((query = pdh_alloc_zero( sizeof(struct query) )))
164 query->magic = PDH_MAGIC_QUERY;
165 list_init( &query->counters );
171 static void destroy_query( struct query *query )
179 DWORD index; /* name index */
180 const WCHAR *path; /* identifier */
181 void (CALLBACK *collect)( struct counter * ); /* collect callback */
182 DWORD type; /* counter type */
183 LONG scale; /* default scale factor */
184 LONGLONG base; /* samples per second */
187 static const WCHAR path_processor_time[] =
188 {'\\','P','r','o','c','e','s','s','o','r','(','_','T','o','t','a','l',')',
189 '\\','%',' ','P','r','o','c','e','s','s','o','r',' ','T','i','m','e',0};
190 static const WCHAR path_uptime[] =
191 {'\\','S','y','s','t','e','m', '\\', 'S','y','s','t','e','m',' ','U','p',' ','T','i','m','e',0};
193 static void CALLBACK collect_processor_time( struct counter *counter )
195 counter->two.largevalue = 500000; /* FIXME */
196 counter->status = PDH_CSTATUS_VALID_DATA;
199 static void CALLBACK collect_uptime( struct counter *counter )
201 counter->two.largevalue = GetTickCount64();
202 counter->status = PDH_CSTATUS_VALID_DATA;
205 #define TYPE_PROCESSOR_TIME \
206 (PERF_SIZE_LARGE | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_TIMER_100NS | PERF_DELTA_COUNTER | \
207 PERF_INVERSE_COUNTER | PERF_DISPLAY_PERCENT)
209 #define TYPE_UPTIME \
210 (PERF_SIZE_LARGE | PERF_TYPE_COUNTER | PERF_COUNTER_ELAPSED | PERF_OBJECT_TIMER | PERF_DISPLAY_SECONDS)
212 /* counter source registry */
213 static const struct source counter_sources[] =
215 { 6, path_processor_time, collect_processor_time, TYPE_PROCESSOR_TIME, -5, 10000000 },
216 { 674, path_uptime, collect_uptime, TYPE_UPTIME, -3, 1000 }
219 static BOOL pdh_match_path( LPCWSTR fullpath, LPCWSTR path )
223 if (strchrW( path, '\\')) p = fullpath;
224 else p = strrchrW( fullpath, '\\' ) + 1;
225 if (strcmpW( p, path )) return FALSE;
229 /***********************************************************************
230 * PdhAddCounterA (PDH.@)
232 PDH_STATUS WINAPI PdhAddCounterA( PDH_HQUERY query, LPCSTR path,
233 DWORD_PTR userdata, PDH_HCOUNTER *counter )
238 TRACE("%p %s %lx %p\n", query, debugstr_a(path), userdata, counter);
240 if (!path) return PDH_INVALID_ARGUMENT;
242 if (!(pathW = pdh_strdup_aw( path )))
243 return PDH_MEMORY_ALLOCATION_FAILURE;
245 ret = PdhAddCounterW( query, pathW, userdata, counter );
251 /***********************************************************************
252 * PdhAddCounterW (PDH.@)
254 PDH_STATUS WINAPI PdhAddCounterW( PDH_HQUERY hquery, LPCWSTR path,
255 DWORD_PTR userdata, PDH_HCOUNTER *hcounter )
257 struct query *query = hquery;
258 struct counter *counter;
261 TRACE("%p %s %lx %p\n", hquery, debugstr_w(path), userdata, hcounter);
263 if (!path || !hcounter) return PDH_INVALID_ARGUMENT;
265 EnterCriticalSection( &pdh_handle_cs );
266 if (!query || query->magic != PDH_MAGIC_QUERY)
268 LeaveCriticalSection( &pdh_handle_cs );
269 return PDH_INVALID_HANDLE;
273 for (i = 0; i < sizeof(counter_sources) / sizeof(counter_sources[0]); i++)
275 if (pdh_match_path( counter_sources[i].path, path ))
277 if ((counter = create_counter()))
279 counter->path = pdh_strdup( counter_sources[i].path );
280 counter->collect = counter_sources[i].collect;
281 counter->type = counter_sources[i].type;
282 counter->defaultscale = counter_sources[i].scale;
283 counter->base = counter_sources[i].base;
284 counter->queryuser = query->user;
285 counter->user = userdata;
287 list_add_tail( &query->counters, &counter->entry );
290 LeaveCriticalSection( &pdh_handle_cs );
291 return ERROR_SUCCESS;
293 LeaveCriticalSection( &pdh_handle_cs );
294 return PDH_MEMORY_ALLOCATION_FAILURE;
297 LeaveCriticalSection( &pdh_handle_cs );
298 return PDH_CSTATUS_NO_COUNTER;
301 /***********************************************************************
302 * PdhAddEnglishCounterA (PDH.@)
304 PDH_STATUS WINAPI PdhAddEnglishCounterA( PDH_HQUERY query, LPCSTR path,
305 DWORD_PTR userdata, PDH_HCOUNTER *counter )
307 TRACE("%p %s %lx %p\n", query, debugstr_a(path), userdata, counter);
309 if (!query) return PDH_INVALID_ARGUMENT;
310 return PdhAddCounterA( query, path, userdata, counter );
313 /***********************************************************************
314 * PdhAddEnglishCounterW (PDH.@)
316 PDH_STATUS WINAPI PdhAddEnglishCounterW( PDH_HQUERY query, LPCWSTR path,
317 DWORD_PTR userdata, PDH_HCOUNTER *counter )
319 TRACE("%p %s %lx %p\n", query, debugstr_w(path), userdata, counter);
321 if (!query) return PDH_INVALID_ARGUMENT;
322 return PdhAddCounterW( query, path, userdata, counter );
325 /* caller must hold counter lock */
326 static PDH_STATUS format_value( struct counter *counter, DWORD format, union value *raw1,
327 union value *raw2, PDH_FMT_COUNTERVALUE *value )
331 factor = counter->scale ? counter->scale : counter->defaultscale;
332 if (format & PDH_FMT_LONG)
334 if (format & PDH_FMT_1000) value->u.longValue = raw2->longvalue * 1000;
335 else value->u.longValue = raw2->longvalue * pow( 10, factor );
337 else if (format & PDH_FMT_LARGE)
339 if (format & PDH_FMT_1000) value->u.largeValue = raw2->largevalue * 1000;
340 else value->u.largeValue = raw2->largevalue * pow( 10, factor );
342 else if (format & PDH_FMT_DOUBLE)
344 if (format & PDH_FMT_1000) value->u.doubleValue = raw2->doublevalue * 1000;
345 else value->u.doubleValue = raw2->doublevalue * pow( 10, factor );
349 WARN("unknown format %x\n", format);
350 return PDH_INVALID_ARGUMENT;
352 return ERROR_SUCCESS;
355 /***********************************************************************
356 * PdhCalculateCounterFromRawValue (PDH.@)
358 PDH_STATUS WINAPI PdhCalculateCounterFromRawValue( PDH_HCOUNTER handle, DWORD format,
359 PPDH_RAW_COUNTER raw1, PPDH_RAW_COUNTER raw2,
360 PPDH_FMT_COUNTERVALUE value )
363 struct counter *counter = handle;
365 TRACE("%p 0x%08x %p %p %p\n", handle, format, raw1, raw2, value);
367 if (!value) return PDH_INVALID_ARGUMENT;
369 EnterCriticalSection( &pdh_handle_cs );
370 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
372 LeaveCriticalSection( &pdh_handle_cs );
373 return PDH_INVALID_HANDLE;
376 ret = format_value( counter, format, (union value *)&raw1->SecondValue,
377 (union value *)&raw2->SecondValue, value );
379 LeaveCriticalSection( &pdh_handle_cs );
383 /* caller must hold query lock */
384 static void shutdown_query_thread( struct query *query )
386 SetEvent( query->stop );
387 WaitForSingleObject( query->thread, INFINITE );
389 CloseHandle( query->stop );
390 CloseHandle( query->thread );
392 query->thread = NULL;
395 /***********************************************************************
396 * PdhCloseQuery (PDH.@)
398 PDH_STATUS WINAPI PdhCloseQuery( PDH_HQUERY handle )
400 struct query *query = handle;
401 struct list *item, *next;
403 TRACE("%p\n", handle);
405 EnterCriticalSection( &pdh_handle_cs );
406 if (!query || query->magic != PDH_MAGIC_QUERY)
408 LeaveCriticalSection( &pdh_handle_cs );
409 return PDH_INVALID_HANDLE;
412 if (query->thread) shutdown_query_thread( query );
414 LIST_FOR_EACH_SAFE( item, next, &query->counters )
416 struct counter *counter = LIST_ENTRY( item, struct counter, entry );
418 list_remove( &counter->entry );
419 destroy_counter( counter );
422 destroy_query( query );
424 LeaveCriticalSection( &pdh_handle_cs );
425 return ERROR_SUCCESS;
428 /* caller must hold query lock */
429 static void collect_query_data( struct query *query )
433 LIST_FOR_EACH( item, &query->counters )
436 struct counter *counter = LIST_ENTRY( item, struct counter, entry );
438 counter->collect( counter );
440 GetLocalTime( &time );
441 SystemTimeToFileTime( &time, &counter->stamp );
445 /***********************************************************************
446 * PdhCollectQueryData (PDH.@)
448 PDH_STATUS WINAPI PdhCollectQueryData( PDH_HQUERY handle )
450 struct query *query = handle;
452 TRACE("%p\n", handle);
454 EnterCriticalSection( &pdh_handle_cs );
455 if (!query || query->magic != PDH_MAGIC_QUERY)
457 LeaveCriticalSection( &pdh_handle_cs );
458 return PDH_INVALID_HANDLE;
461 if (list_empty( &query->counters ))
463 LeaveCriticalSection( &pdh_handle_cs );
467 collect_query_data( query );
469 LeaveCriticalSection( &pdh_handle_cs );
470 return ERROR_SUCCESS;
473 static DWORD CALLBACK collect_query_thread( void *arg )
475 struct query *query = arg;
476 DWORD interval = query->interval;
477 HANDLE stop = query->stop;
482 if (WaitForSingleObject( stop, interval ) != WAIT_TIMEOUT) ExitThread( 0 );
484 EnterCriticalSection( &pdh_handle_cs );
485 if (query->magic != PDH_MAGIC_QUERY)
487 LeaveCriticalSection( &pdh_handle_cs );
488 ExitThread( PDH_INVALID_HANDLE );
491 collect_query_data( query );
493 if (!SetEvent( query->wait ))
495 LeaveCriticalSection( &pdh_handle_cs );
498 LeaveCriticalSection( &pdh_handle_cs );
502 /***********************************************************************
503 * PdhCollectQueryDataEx (PDH.@)
505 PDH_STATUS WINAPI PdhCollectQueryDataEx( PDH_HQUERY handle, DWORD interval, HANDLE event )
508 struct query *query = handle;
510 TRACE("%p %d %p\n", handle, interval, event);
512 EnterCriticalSection( &pdh_handle_cs );
513 if (!query || query->magic != PDH_MAGIC_QUERY)
515 LeaveCriticalSection( &pdh_handle_cs );
516 return PDH_INVALID_HANDLE;
518 if (list_empty( &query->counters ))
520 LeaveCriticalSection( &pdh_handle_cs );
523 if (query->thread) shutdown_query_thread( query );
524 if (!(query->stop = CreateEventW( NULL, FALSE, FALSE, NULL )))
526 ret = GetLastError();
527 LeaveCriticalSection( &pdh_handle_cs );
531 query->interval = interval * 1000;
532 if (!(query->thread = CreateThread( NULL, 0, collect_query_thread, query, 0, NULL )))
534 ret = GetLastError();
535 CloseHandle( query->stop );
537 LeaveCriticalSection( &pdh_handle_cs );
540 WaitForSingleObject( query->stop, INFINITE );
542 LeaveCriticalSection( &pdh_handle_cs );
543 return ERROR_SUCCESS;
546 /***********************************************************************
547 * PdhCollectQueryDataWithTime (PDH.@)
549 PDH_STATUS WINAPI PdhCollectQueryDataWithTime( PDH_HQUERY handle, LONGLONG *timestamp )
551 struct query *query = handle;
552 struct counter *counter;
555 TRACE("%p %p\n", handle, timestamp);
557 if (!timestamp) return PDH_INVALID_ARGUMENT;
559 EnterCriticalSection( &pdh_handle_cs );
560 if (!query || query->magic != PDH_MAGIC_QUERY)
562 LeaveCriticalSection( &pdh_handle_cs );
563 return PDH_INVALID_HANDLE;
565 if (list_empty( &query->counters ))
567 LeaveCriticalSection( &pdh_handle_cs );
571 collect_query_data( query );
573 item = list_head( &query->counters );
574 counter = LIST_ENTRY( item, struct counter, entry );
576 *timestamp = ((LONGLONG)counter->stamp.dwHighDateTime << 32) | counter->stamp.dwLowDateTime;
578 LeaveCriticalSection( &pdh_handle_cs );
579 return ERROR_SUCCESS;
582 /***********************************************************************
583 * PdhGetCounterInfoA (PDH.@)
585 PDH_STATUS WINAPI PdhGetCounterInfoA( PDH_HCOUNTER handle, BOOLEAN text, LPDWORD size, PPDH_COUNTER_INFO_A info )
587 struct counter *counter = handle;
589 TRACE("%p %d %p %p\n", handle, text, size, info);
591 EnterCriticalSection( &pdh_handle_cs );
592 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
594 LeaveCriticalSection( &pdh_handle_cs );
595 return PDH_INVALID_HANDLE;
599 LeaveCriticalSection( &pdh_handle_cs );
600 return PDH_INVALID_ARGUMENT;
602 if (*size < sizeof(PDH_COUNTER_INFO_A))
604 *size = sizeof(PDH_COUNTER_INFO_A);
605 LeaveCriticalSection( &pdh_handle_cs );
606 return PDH_MORE_DATA;
609 memset( info, 0, sizeof(PDH_COUNTER_INFO_A) );
611 info->dwType = counter->type;
612 info->CStatus = counter->status;
613 info->lScale = counter->scale;
614 info->lDefaultScale = counter->defaultscale;
615 info->dwUserData = counter->user;
616 info->dwQueryUserData = counter->queryuser;
618 *size = sizeof(PDH_COUNTER_INFO_A);
620 LeaveCriticalSection( &pdh_handle_cs );
621 return ERROR_SUCCESS;
624 /***********************************************************************
625 * PdhGetCounterInfoW (PDH.@)
627 PDH_STATUS WINAPI PdhGetCounterInfoW( PDH_HCOUNTER handle, BOOLEAN text, LPDWORD size, PPDH_COUNTER_INFO_W info )
629 struct counter *counter = handle;
631 TRACE("%p %d %p %p\n", handle, text, size, info);
633 EnterCriticalSection( &pdh_handle_cs );
634 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
636 LeaveCriticalSection( &pdh_handle_cs );
637 return PDH_INVALID_HANDLE;
641 LeaveCriticalSection( &pdh_handle_cs );
642 return PDH_INVALID_ARGUMENT;
644 if (*size < sizeof(PDH_COUNTER_INFO_W))
646 *size = sizeof(PDH_COUNTER_INFO_W);
647 LeaveCriticalSection( &pdh_handle_cs );
648 return PDH_MORE_DATA;
651 memset( info, 0, sizeof(PDH_COUNTER_INFO_W) );
653 info->dwType = counter->type;
654 info->CStatus = counter->status;
655 info->lScale = counter->scale;
656 info->lDefaultScale = counter->defaultscale;
657 info->dwUserData = counter->user;
658 info->dwQueryUserData = counter->queryuser;
660 *size = sizeof(PDH_COUNTER_INFO_W);
662 LeaveCriticalSection( &pdh_handle_cs );
663 return ERROR_SUCCESS;
666 /***********************************************************************
667 * PdhGetCounterTimeBase (PDH.@)
669 PDH_STATUS WINAPI PdhGetCounterTimeBase( PDH_HCOUNTER handle, LONGLONG *base )
671 struct counter *counter = handle;
673 TRACE("%p %p\n", handle, base);
675 if (!base) return PDH_INVALID_ARGUMENT;
677 EnterCriticalSection( &pdh_handle_cs );
678 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
680 LeaveCriticalSection( &pdh_handle_cs );
681 return PDH_INVALID_HANDLE;
684 *base = counter->base;
686 LeaveCriticalSection( &pdh_handle_cs );
687 return ERROR_SUCCESS;
690 /***********************************************************************
691 * PdhGetFormattedCounterValue (PDH.@)
693 PDH_STATUS WINAPI PdhGetFormattedCounterValue( PDH_HCOUNTER handle, DWORD format,
694 LPDWORD type, PPDH_FMT_COUNTERVALUE value )
697 struct counter *counter = handle;
699 TRACE("%p %x %p %p\n", handle, format, type, value);
701 if (!value) return PDH_INVALID_ARGUMENT;
703 EnterCriticalSection( &pdh_handle_cs );
704 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
706 LeaveCriticalSection( &pdh_handle_cs );
707 return PDH_INVALID_HANDLE;
711 LeaveCriticalSection( &pdh_handle_cs );
712 return PDH_INVALID_DATA;
714 if (!(ret = format_value( counter, format, &counter->one, &counter->two, value )))
716 value->CStatus = ERROR_SUCCESS;
717 if (type) *type = counter->type;
720 LeaveCriticalSection( &pdh_handle_cs );
724 /***********************************************************************
725 * PdhGetRawCounterValue (PDH.@)
727 PDH_STATUS WINAPI PdhGetRawCounterValue( PDH_HCOUNTER handle, LPDWORD type,
728 PPDH_RAW_COUNTER value )
730 struct counter *counter = handle;
732 TRACE("%p %p %p\n", handle, type, value);
734 if (!value) return PDH_INVALID_ARGUMENT;
736 EnterCriticalSection( &pdh_handle_cs );
737 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
739 LeaveCriticalSection( &pdh_handle_cs );
740 return PDH_INVALID_HANDLE;
743 value->CStatus = counter->status;
744 value->TimeStamp.dwLowDateTime = counter->stamp.dwLowDateTime;
745 value->TimeStamp.dwHighDateTime = counter->stamp.dwHighDateTime;
746 value->FirstValue = counter->one.largevalue;
747 value->SecondValue = counter->two.largevalue;
748 value->MultiCount = 1; /* FIXME */
750 if (type) *type = counter->type;
752 LeaveCriticalSection( &pdh_handle_cs );
753 return ERROR_SUCCESS;
756 /***********************************************************************
757 * PdhLookupPerfIndexByNameA (PDH.@)
759 PDH_STATUS WINAPI PdhLookupPerfIndexByNameA( LPCSTR machine, LPCSTR name, LPDWORD index )
764 TRACE("%s %s %p\n", debugstr_a(machine), debugstr_a(name), index);
766 if (!name || !index) return PDH_INVALID_ARGUMENT;
770 FIXME("remote machine not supported\n");
771 return PDH_CSTATUS_NO_MACHINE;
773 if (!(nameW = pdh_strdup_aw( name )))
774 return PDH_MEMORY_ALLOCATION_FAILURE;
776 ret = PdhLookupPerfIndexByNameW( NULL, nameW, index );
782 /***********************************************************************
783 * PdhLookupPerfIndexByNameW (PDH.@)
785 PDH_STATUS WINAPI PdhLookupPerfIndexByNameW( LPCWSTR machine, LPCWSTR name, LPDWORD index )
789 TRACE("%s %s %p\n", debugstr_w(machine), debugstr_w(name), index);
791 if (!name || !index) return PDH_INVALID_ARGUMENT;
795 FIXME("remote machine not supported\n");
796 return PDH_CSTATUS_NO_MACHINE;
798 for (i = 0; i < sizeof(counter_sources) / sizeof(counter_sources[0]); i++)
800 if (pdh_match_path( counter_sources[i].path, name ))
802 *index = counter_sources[i].index;
803 return ERROR_SUCCESS;
806 return PDH_STRING_NOT_FOUND;
809 /***********************************************************************
810 * PdhLookupPerfNameByIndexA (PDH.@)
812 PDH_STATUS WINAPI PdhLookupPerfNameByIndexA( LPCSTR machine, DWORD index, LPSTR buffer, LPDWORD size )
815 WCHAR bufferW[PDH_MAX_COUNTER_NAME];
816 DWORD sizeW = sizeof(bufferW) / sizeof(WCHAR);
818 TRACE("%s %d %p %p\n", debugstr_a(machine), index, buffer, size);
822 FIXME("remote machine not supported\n");
823 return PDH_CSTATUS_NO_MACHINE;
826 if (!buffer && !size) return PDH_INVALID_ARGUMENT;
827 if (!index) return ERROR_SUCCESS;
829 if (!(ret = PdhLookupPerfNameByIndexW( NULL, index, bufferW, &sizeW )))
831 int required = WideCharToMultiByte( CP_ACP, 0, bufferW, -1, NULL, 0, NULL, NULL );
833 if (size && *size < required) ret = PDH_MORE_DATA;
834 else WideCharToMultiByte( CP_ACP, 0, bufferW, -1, buffer, required, NULL, NULL );
835 if (size) *size = required;
840 /***********************************************************************
841 * PdhLookupPerfNameByIndexW (PDH.@)
843 PDH_STATUS WINAPI PdhLookupPerfNameByIndexW( LPCWSTR machine, DWORD index, LPWSTR buffer, LPDWORD size )
848 TRACE("%s %d %p %p\n", debugstr_w(machine), index, buffer, size);
852 FIXME("remote machine not supported\n");
853 return PDH_CSTATUS_NO_MACHINE;
856 if (!buffer && !size) return PDH_INVALID_ARGUMENT;
857 if (!index) return ERROR_SUCCESS;
859 for (i = 0; i < sizeof(counter_sources) / sizeof(counter_sources[0]); i++)
861 if (counter_sources[i].index == index)
863 WCHAR *p = strrchrW( counter_sources[i].path, '\\' ) + 1;
864 unsigned int required = strlenW( p ) + 1;
866 if (*size < required) ret = PDH_MORE_DATA;
869 strcpyW( buffer, p );
876 return PDH_INVALID_ARGUMENT;
879 /***********************************************************************
880 * PdhOpenQueryA (PDH.@)
882 PDH_STATUS WINAPI PdhOpenQueryA( LPCSTR source, DWORD_PTR userdata, PDH_HQUERY *query )
885 WCHAR *sourceW = NULL;
887 TRACE("%s %lx %p\n", debugstr_a(source), userdata, query);
889 if (source && !(sourceW = pdh_strdup_aw( source ))) return PDH_MEMORY_ALLOCATION_FAILURE;
891 ret = PdhOpenQueryW( sourceW, userdata, query );
897 /***********************************************************************
898 * PdhOpenQueryW (PDH.@)
900 PDH_STATUS WINAPI PdhOpenQueryW( LPCWSTR source, DWORD_PTR userdata, PDH_HQUERY *handle )
904 TRACE("%s %lx %p\n", debugstr_w(source), userdata, handle);
906 if (!handle) return PDH_INVALID_ARGUMENT;
910 FIXME("log file data source not supported\n");
911 return PDH_INVALID_ARGUMENT;
913 if ((query = create_query()))
915 query->user = userdata;
918 return ERROR_SUCCESS;
920 return PDH_MEMORY_ALLOCATION_FAILURE;
923 /***********************************************************************
924 * PdhRemoveCounter (PDH.@)
926 PDH_STATUS WINAPI PdhRemoveCounter( PDH_HCOUNTER handle )
928 struct counter *counter = handle;
930 TRACE("%p\n", handle);
932 EnterCriticalSection( &pdh_handle_cs );
933 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
935 LeaveCriticalSection( &pdh_handle_cs );
936 return PDH_INVALID_HANDLE;
939 list_remove( &counter->entry );
940 destroy_counter( counter );
942 LeaveCriticalSection( &pdh_handle_cs );
943 return ERROR_SUCCESS;
946 /***********************************************************************
947 * PdhSetCounterScaleFactor (PDH.@)
949 PDH_STATUS WINAPI PdhSetCounterScaleFactor( PDH_HCOUNTER handle, LONG factor )
951 struct counter *counter = handle;
953 TRACE("%p\n", handle);
955 EnterCriticalSection( &pdh_handle_cs );
956 if (!counter || counter->magic != PDH_MAGIC_COUNTER)
958 LeaveCriticalSection( &pdh_handle_cs );
959 return PDH_INVALID_HANDLE;
961 if (factor < PDH_MIN_SCALE || factor > PDH_MAX_SCALE)
963 LeaveCriticalSection( &pdh_handle_cs );
964 return PDH_INVALID_ARGUMENT;
967 counter->scale = factor;
969 LeaveCriticalSection( &pdh_handle_cs );
970 return ERROR_SUCCESS;
973 /***********************************************************************
974 * PdhValidatePathA (PDH.@)
976 PDH_STATUS WINAPI PdhValidatePathA( LPCSTR path )
981 TRACE("%s\n", debugstr_a(path));
983 if (!path) return PDH_INVALID_ARGUMENT;
984 if (!(pathW = pdh_strdup_aw( path ))) return PDH_MEMORY_ALLOCATION_FAILURE;
986 ret = PdhValidatePathW( pathW );
992 static PDH_STATUS validate_path( LPCWSTR path )
994 if (!path || !*path) return PDH_INVALID_ARGUMENT;
995 if (*path++ != '\\' || !strchrW( path, '\\' )) return PDH_CSTATUS_BAD_COUNTERNAME;
996 return ERROR_SUCCESS;
999 /***********************************************************************
1000 * PdhValidatePathW (PDH.@)
1002 PDH_STATUS WINAPI PdhValidatePathW( LPCWSTR path )
1007 TRACE("%s\n", debugstr_w(path));
1009 if ((ret = validate_path( path ))) return ret;
1011 for (i = 0; i < sizeof(counter_sources) / sizeof(counter_sources[0]); i++)
1012 if (pdh_match_path( counter_sources[i].path, path )) return ERROR_SUCCESS;
1014 return PDH_CSTATUS_NO_COUNTER;
1017 /***********************************************************************
1018 * PdhValidatePathExA (PDH.@)
1020 PDH_STATUS WINAPI PdhValidatePathExA( PDH_HLOG source, LPCSTR path )
1022 TRACE("%p %s\n", source, debugstr_a(path));
1026 FIXME("log file data source not supported\n");
1027 return ERROR_SUCCESS;
1029 return PdhValidatePathA( path );
1032 /***********************************************************************
1033 * PdhValidatePathExW (PDH.@)
1035 PDH_STATUS WINAPI PdhValidatePathExW( PDH_HLOG source, LPCWSTR path )
1037 TRACE("%p %s\n", source, debugstr_w(path));
1041 FIXME("log file data source not supported\n");
1042 return ERROR_SUCCESS;
1044 return PdhValidatePathW( path );