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 inline void *pdh_alloc( SIZE_T size )
42 return HeapAlloc( GetProcessHeap(), 0, size );
45 static inline void *pdh_alloc_zero( SIZE_T size )
47 return HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size );
50 static inline void pdh_free( LPVOID mem )
52 HeapFree( GetProcessHeap(), 0, mem );
55 static inline WCHAR *pdh_strdup( const WCHAR *src )
59 if (!src) return NULL;
60 if ((dst = pdh_alloc( (strlenW( src ) + 1) * sizeof(WCHAR) ))) strcpyW( dst, src );
64 static inline WCHAR *pdh_strdup_aw( const char *src )
69 if (!src) return NULL;
70 len = MultiByteToWideChar( CP_ACP, 0, src, -1, NULL, 0 );
71 if ((dst = pdh_alloc( len * sizeof(WCHAR) ))) MultiByteToWideChar( CP_ACP, 0, src, -1, dst, len );
75 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
77 TRACE("(0x%p, %d, %p)\n",hinstDLL,fdwReason,lpvReserved);
79 if (fdwReason == DLL_WINE_PREATTACH) return FALSE; /* prefer native version */
81 if (fdwReason == DLL_PROCESS_ATTACH)
83 DisableThreadLibraryCalls( hinstDLL );
92 WCHAR *path; /* identifier */
93 DWORD type; /* counter type */
94 DWORD status; /* update status */
95 LONG scale; /* scale factor */
96 LONG defaultscale; /* default scale factor */
97 DWORD_PTR user; /* user data */
98 DWORD_PTR queryuser; /* query user data */
99 LONGLONG base; /* samples per second */
100 FILETIME stamp; /* time stamp */
101 void (CALLBACK *collect)( struct counter * ); /* collect callback */
107 } one; /* first value */
113 } two; /* second value */
116 static struct counter *create_counter( void )
118 struct counter *counter;
120 if ((counter = pdh_alloc_zero( sizeof(struct counter) ))) return counter;
124 #define PDH_MAGIC_QUERY 0x50444830 /* 'PDH0' */
128 DWORD magic; /* signature */
129 DWORD_PTR user; /* user data */
130 struct list counters; /* counter list */
133 static struct query *create_query( void )
137 if ((query = pdh_alloc_zero( sizeof(struct query) )))
139 query->magic = PDH_MAGIC_QUERY;
140 list_init( &query->counters );
148 const WCHAR *path; /* identifier */
149 void (CALLBACK *collect)( struct counter * ); /* collect callback */
150 DWORD type; /* counter type */
151 LONG scale; /* default scale factor */
152 LONGLONG base; /* samples per second */
155 static const WCHAR path_uptime[] =
156 {'\\','S','y','s','t','e','m', '\\', 'S','y','s','t','e','m',' ','U','p',' ','T','i','m','e',0};
158 static void CALLBACK collect_uptime( struct counter *counter )
160 counter->two.largevalue = GetTickCount(); /* FIXME */
161 counter->status = PDH_CSTATUS_VALID_DATA;
164 #define TYPE_UPTIME \
165 (PERF_SIZE_LARGE | PERF_TYPE_COUNTER | PERF_COUNTER_ELAPSED | PERF_OBJECT_TIMER | PERF_DISPLAY_SECONDS)
167 /* counter source registry */
168 static const struct source counter_sources[] =
170 { path_uptime, collect_uptime, TYPE_UPTIME, -3, 1000 }
173 /***********************************************************************
174 * PdhAddCounterA (PDH.@)
176 PDH_STATUS WINAPI PdhAddCounterA( PDH_HQUERY query, LPCSTR path,
177 DWORD_PTR userdata, PDH_HCOUNTER *counter )
182 TRACE("%p %s %lx %p\n", query, debugstr_a(path), userdata, counter);
184 if (!path) return PDH_INVALID_ARGUMENT;
186 if (!(pathW = pdh_strdup_aw( path )))
187 return PDH_MEMORY_ALLOCATION_FAILURE;
189 ret = PdhAddCounterW( query, pathW, userdata, counter );
195 /***********************************************************************
196 * PdhAddCounterW (PDH.@)
198 PDH_STATUS WINAPI PdhAddCounterW( PDH_HQUERY hquery, LPCWSTR path,
199 DWORD_PTR userdata, PDH_HCOUNTER *hcounter )
201 struct query *query = hquery;
202 struct counter *counter;
205 TRACE("%p %s %lx %p\n", hquery, debugstr_w(path), userdata, hcounter);
207 if (!path || !hcounter) return PDH_INVALID_ARGUMENT;
208 if (!query || (query->magic != PDH_MAGIC_QUERY)) return PDH_INVALID_HANDLE;
211 for (i = 0; i < sizeof(counter_sources) / sizeof(counter_sources[0]); i++)
213 if (strstrW( path, counter_sources[i].path ))
215 if ((counter = create_counter()))
217 counter->path = pdh_strdup( counter_sources[i].path );
218 counter->collect = counter_sources[i].collect;
219 counter->type = counter_sources[i].type;
220 counter->defaultscale = counter_sources[i].scale;
221 counter->base = counter_sources[i].base;
222 counter->queryuser = query->user;
223 counter->user = userdata;
225 list_add_tail( &query->counters, &counter->entry );
228 return ERROR_SUCCESS;
230 return PDH_MEMORY_ALLOCATION_FAILURE;
233 return PDH_CSTATUS_NO_COUNTER;
236 /***********************************************************************
237 * PdhCloseQuery (PDH.@)
239 PDH_STATUS WINAPI PdhCloseQuery( PDH_HQUERY handle )
241 struct query *query = handle;
244 TRACE("%p\n", handle);
246 if (!query || (query->magic != PDH_MAGIC_QUERY)) return PDH_INVALID_HANDLE;
248 LIST_FOR_EACH( item, &query->counters )
250 struct counter *counter = LIST_ENTRY( item, struct counter, entry );
252 list_remove( &counter->entry );
254 pdh_free( counter->path );
259 return ERROR_SUCCESS;
262 /***********************************************************************
263 * PdhCollectQueryData (PDH.@)
265 PDH_STATUS WINAPI PdhCollectQueryData( PDH_HQUERY handle )
267 struct query *query = handle;
270 TRACE("%p\n", handle);
272 if (!query || (query->magic != PDH_MAGIC_QUERY)) return PDH_INVALID_HANDLE;
274 LIST_FOR_EACH( item, &query->counters )
277 struct counter *counter = LIST_ENTRY( item, struct counter, entry );
279 counter->collect( counter );
281 GetLocalTime( &time );
282 SystemTimeToFileTime( &time, &counter->stamp );
284 return ERROR_SUCCESS;
287 /***********************************************************************
288 * PdhGetCounterInfoA (PDH.@)
290 PDH_STATUS WINAPI PdhGetCounterInfoA( PDH_HCOUNTER handle, BOOLEAN text, LPDWORD size, PPDH_COUNTER_INFO_A info )
292 struct counter *counter = handle;
294 TRACE("%p %d %p %p\n", handle, text, size, info);
296 if (!counter) return PDH_INVALID_HANDLE;
297 if (!size) return PDH_INVALID_ARGUMENT;
299 if (*size < sizeof(PDH_COUNTER_INFO_A))
301 *size = sizeof(PDH_COUNTER_INFO_A);
302 return PDH_MORE_DATA;
305 memset( info, 0, sizeof(PDH_COUNTER_INFO_A) );
307 info->dwType = counter->type;
308 info->CStatus = counter->status;
309 info->lScale = counter->scale;
310 info->lDefaultScale = counter->defaultscale;
311 info->dwUserData = counter->user;
312 info->dwQueryUserData = counter->queryuser;
314 *size = sizeof(PDH_COUNTER_INFO_A);
315 return ERROR_SUCCESS;
318 /***********************************************************************
319 * PdhGetCounterInfoW (PDH.@)
321 PDH_STATUS WINAPI PdhGetCounterInfoW( PDH_HCOUNTER handle, BOOLEAN text, LPDWORD size, PPDH_COUNTER_INFO_W info )
323 struct counter *counter = handle;
325 TRACE("%p %d %p %p\n", handle, text, size, info);
327 if (!size) return PDH_INVALID_ARGUMENT;
328 if (!counter) return PDH_INVALID_HANDLE;
330 if (*size < sizeof(PDH_COUNTER_INFO_W))
332 *size = sizeof(PDH_COUNTER_INFO_W);
333 return PDH_MORE_DATA;
336 memset( info, 0, sizeof(PDH_COUNTER_INFO_W) );
338 info->dwType = counter->type;
339 info->CStatus = counter->status;
340 info->lScale = counter->scale;
341 info->lDefaultScale = counter->defaultscale;
342 info->dwUserData = counter->user;
343 info->dwQueryUserData = counter->queryuser;
345 *size = sizeof(PDH_COUNTER_INFO_A);
346 return ERROR_SUCCESS;
349 /***********************************************************************
350 * PdhGetCounterTimeBase (PDH.@)
352 PDH_STATUS WINAPI PdhGetCounterTimeBase( PDH_HCOUNTER handle, LONGLONG *base )
354 struct counter *counter = handle;
356 TRACE("%p %p\n", handle, base);
358 if (!base) return PDH_INVALID_ARGUMENT;
359 if (!counter) return PDH_INVALID_HANDLE;
361 *base = counter->base;
362 return ERROR_SUCCESS;
365 /***********************************************************************
366 * PdhGetFormattedCounterValue (PDH.@)
368 PDH_STATUS WINAPI PdhGetFormattedCounterValue( PDH_HCOUNTER handle, DWORD format,
369 LPDWORD type, PPDH_FMT_COUNTERVALUE value )
372 struct counter *counter = handle;
374 TRACE("%p %x %p %p\n", handle, format, type, value);
376 if (!value) return PDH_INVALID_ARGUMENT;
377 if (!counter) return PDH_INVALID_HANDLE;
379 if (counter->status) return PDH_INVALID_DATA;
381 factor = counter->scale ? counter->scale : counter->defaultscale;
382 if (format & PDH_FMT_LONG)
384 if (format & PDH_FMT_1000) value->u.longValue = counter->two.longvalue * 1000;
385 else value->u.longValue = counter->two.longvalue * pow( 10, factor );
387 else if (format & PDH_FMT_LARGE)
389 if (format & PDH_FMT_1000) value->u.longValue = counter->two.largevalue * 1000;
390 else value->u.largeValue = counter->two.largevalue * pow( 10, factor );
392 else if (format & PDH_FMT_DOUBLE)
394 if (format & PDH_FMT_1000) value->u.longValue = counter->two.doublevalue * 1000;
395 else value->u.doubleValue = counter->two.doublevalue * pow( 10, factor );
399 WARN("unknown format %x\n", format);
400 return PDH_INVALID_ARGUMENT;
402 value->CStatus = ERROR_SUCCESS;
404 if (type) *type = counter->type;
405 return ERROR_SUCCESS;
408 /***********************************************************************
409 * PdhGetRawCounterValue (PDH.@)
411 PDH_STATUS WINAPI PdhGetRawCounterValue( PDH_HCOUNTER handle, LPDWORD type,
412 PPDH_RAW_COUNTER value )
414 struct counter *counter = handle;
416 TRACE("%p %p %p\n", handle, type, value);
418 if (!value) return PDH_INVALID_ARGUMENT;
419 if (!counter) return PDH_INVALID_HANDLE;
421 value->CStatus = counter->status;
422 value->TimeStamp.dwLowDateTime = counter->stamp.dwLowDateTime;
423 value->TimeStamp.dwHighDateTime = counter->stamp.dwHighDateTime;
424 value->FirstValue = counter->one.largevalue;;
425 value->SecondValue = counter->two.largevalue;
426 value->MultiCount = 1; /* FIXME */
428 if (type) *type = counter->type;
429 return ERROR_SUCCESS;
432 /***********************************************************************
433 * PdhOpenQueryA (PDH.@)
435 PDH_STATUS WINAPI PdhOpenQueryA( LPCSTR source, DWORD_PTR userdata, PDH_HQUERY *query )
438 WCHAR *sourceW = NULL;
440 TRACE("%s %lx %p\n", debugstr_a(source), userdata, query);
442 if (source && !(sourceW = pdh_strdup_aw( source ))) return PDH_MEMORY_ALLOCATION_FAILURE;
444 ret = PdhOpenQueryW( sourceW, userdata, query );
450 /***********************************************************************
451 * PdhOpenQueryW (PDH.@)
453 PDH_STATUS WINAPI PdhOpenQueryW( LPCWSTR source, DWORD_PTR userdata, PDH_HQUERY *handle )
457 TRACE("%s %lx %p\n", debugstr_w(source), userdata, handle);
459 if (!handle) return PDH_INVALID_ARGUMENT;
463 FIXME("log file data source not supported\n");
464 return PDH_INVALID_ARGUMENT;
466 if ((query = create_query()))
468 query->user = userdata;
471 return ERROR_SUCCESS;
473 return PDH_MEMORY_ALLOCATION_FAILURE;
476 /***********************************************************************
477 * PdhRemoveCounter (PDH.@)
479 PDH_STATUS WINAPI PdhRemoveCounter( PDH_HCOUNTER handle )
481 struct counter *counter = handle;
483 TRACE("%p\n", handle);
485 if (!counter) return PDH_INVALID_HANDLE;
487 list_remove( &counter->entry );
489 pdh_free( counter->path );
492 return ERROR_SUCCESS;
495 /***********************************************************************
496 * PdhSetCounterScaleFactor (PDH.@)
498 PDH_STATUS WINAPI PdhSetCounterScaleFactor( PDH_HCOUNTER handle, LONG factor )
500 struct counter *counter = handle;
502 TRACE("%p\n", handle);
504 if (!counter) return PDH_INVALID_HANDLE;
505 if (factor < PDH_MIN_SCALE || factor > PDH_MAX_SCALE) return PDH_INVALID_ARGUMENT;
507 counter->scale = factor;
508 return ERROR_SUCCESS;