2 * PROJECT: ReactOS win32 kernel mode subsystem
3 * LICENSE: GPL - See COPYING in the top level directory
4 * FILE: win32ss/gdi/ntgdi/gdiobj.c
5 * PURPOSE: General GDI object manipulation routines
6 * PROGRAMMERS: Timo Kreuzer
10 * If you want to understand this code, you need to start thinking in portals.
11 * - gpaulRefCount is a global pointer to an allocated array of ULONG values,
12 * one for each handle. Bits 0 - 22 contain a reference count for the handle.
13 * It gets increased for each handle lock / reference. Bit 23 contains a valid
14 * bit. If this bit is 0, the handle got deleted and will be pushed to the free
15 * list, once all references are gone. Bits 24 - 31 contain the reuse value of
16 * the handle, which allows to check if the entry was changed before atomically
17 * exchanging the reference count.
18 * - Objects can exist with or without a handle
19 * - Objects with a handle can be locked either exclusively or shared.
20 * Both locks increase the handle reference count in gpaulRefCount.
21 * Exclusive locks also increase the BASEOBJECT's cExclusiveLock field
22 * and the first lock (can be acquired recursively) acquires a pushlock
23 * that is also stored in the BASEOBJECT.
24 * - Objects without a handle cannot have exclusive locks. Their reference
25 * count is tracked in the BASEOBJECT's ulShareCount field.
26 * - An object that is inserted in the handle table automatically has an
27 * exclusive lock. For objects that are "shared objects" (BRUSH, PALETTE, ...)
28 * this is the only way it can ever be exclusively locked. It prevents the
29 * object from being locked by another thread. A shared lock will simply fail,
30 * while an exclusive lock will succeed after the object was unlocked.
34 * Owner: POWNED PUBLIC NONE spec
35 * ---------------------------------------------------
36 * LockForRead + + - PUBLIC
37 * LockForWrite + - - POWNED
39 * NtGdiDeleteObjectApp + - - PUBLIC
40 * GreDeleteObject + + + NONE
41 * GreSetOwner(POWNED) - - + -
42 * GreSetOwner(PUBLIC) + - + -
43 * GreSetOwner(NONE) + - - -
47 /* INCLUDES ******************************************************************/
56 _In_ _Interlocked_operand_ ULONG
volatile *Source
)
63 INCREASE_THREAD_LOCK_COUNT(
66 PTHREADINFO pti
= PsGetCurrentThreadWin32Thread();
67 DBG_UNREFERENCED_PARAMETER(hobj
);
71 pti
->acExclusiveLockCount
[((ULONG_PTR
)hobj
>> 16) & 0x1f]++;
73 pti
->cExclusiveLocks
++;
79 DECREASE_THREAD_LOCK_COUNT(
82 PTHREADINFO pti
= PsGetCurrentThreadWin32Thread();
83 DBG_UNREFERENCED_PARAMETER(hobj
);
87 pti
->acExclusiveLockCount
[((ULONG_PTR
)hobj
>> 16) & 0x1f]--;
89 pti
->cExclusiveLocks
--;
98 PTHREADINFO pti
= PsGetCurrentThreadWin32Thread();
103 /* Ensure correct locking order! */
104 for (i
= objt
+ 1; i
< GDIObjTypeTotal
; i
++)
106 NT_ASSERT(pti
->acExclusiveLockCount
[i
] == 0);
110 #define ASSERT_SHARED_OBJECT_TYPE(objt) \
111 ASSERT((objt) == GDIObjType_SURF_TYPE || \
112 (objt) == GDIObjType_PAL_TYPE || \
113 (objt) == GDIObjType_LFONT_TYPE || \
114 (objt) == GDIObjType_PATH_TYPE || \
115 (objt) == GDIObjType_BRUSH_TYPE)
116 #define ASSERT_EXCLUSIVE_OBJECT_TYPE(objt) \
117 ASSERT((objt) == GDIObjType_DC_TYPE || \
118 (objt) == GDIObjType_RGN_TYPE)
119 #define ASSERT_TRYLOCK_OBJECT_TYPE(objt) \
120 ASSERT((objt) == GDIObjType_DRVOBJ_TYPE)
122 #define ASSERT_LOCK_ORDER(hobj)
123 #define ASSERT_SHARED_OBJECT_TYPE(objt)
124 #define ASSERT_EXCLUSIVE_OBJECT_TYPE(objt)
125 #define ASSERT_TRYLOCK_OBJECT_TYPE(objt)
128 #if defined(_M_IX86) || defined(_M_AMD64)
129 #define InterlockedOr16 _InterlockedOr16
132 #define GDIOBJ_POOL_TAG(type) ('00hG' + (((type) & 0x1f) << 24))
136 REF_MASK_REUSE
= 0xff000000,
137 REF_INC_REUSE
= 0x01000000,
138 REF_MASK_VALID
= 0x00800000,
139 REF_MASK_COUNT
= 0x007fffff,
140 REF_MASK_INUSE
= 0x00ffffff,
143 /* GLOBALS *******************************************************************/
145 /* Per session handle table globals */
146 static PVOID gpvGdiHdlTblSection
= NULL
;
148 PULONG gpaulRefCount
;
149 volatile ULONG gulFirstFree
;
150 volatile ULONG gulFirstUnused
;
151 static PPAGED_LOOKASIDE_LIST gpaLookasideList
;
153 static VOID NTAPI
GDIOBJ_vCleanup(PVOID ObjectBody
);
159 NULL
, /* 00 GDIObjType_DEF_TYPE */
160 DC_vCleanup
, /* 01 GDIObjType_DC_TYPE */
161 NULL
, /* 02 GDIObjType_UNUSED1_TYPE */
162 NULL
, /* 03 GDIObjType_UNUSED2_TYPE */
163 REGION_vCleanup
, /* 04 GDIObjType_RGN_TYPE */
164 SURFACE_vCleanup
, /* 05 GDIObjType_SURF_TYPE */
165 GDIOBJ_vCleanup
, /* 06 GDIObjType_CLIENTOBJ_TYPE */
166 GDIOBJ_vCleanup
, /* 07 GDIObjType_PATH_TYPE */
167 PALETTE_vCleanup
, /* 08 GDIObjType_PAL_TYPE */
168 GDIOBJ_vCleanup
, /* 09 GDIObjType_ICMLCS_TYPE */
169 GDIOBJ_vCleanup
, /* 0a GDIObjType_LFONT_TYPE */
170 NULL
, /* 0b GDIObjType_RFONT_TYPE, unused */
171 NULL
, /* 0c GDIObjType_PFE_TYPE, unused */
172 NULL
, /* 0d GDIObjType_PFT_TYPE, unused */
173 GDIOBJ_vCleanup
, /* 0e GDIObjType_ICMCXF_TYPE */
174 NULL
, /* 0f GDIObjType_SPRITE_TYPE, unused */
175 NULL
, /* 10 GDIObjType_BRUSH_TYPE, BRUSH, PEN, EXTPEN */
176 NULL
, /* 11 GDIObjType_UMPD_TYPE, unused */
177 NULL
, /* 12 GDIObjType_UNUSED4_TYPE */
178 NULL
, /* 13 GDIObjType_SPACE_TYPE, unused */
179 NULL
, /* 14 GDIObjType_UNUSED5_TYPE */
180 NULL
, /* 15 GDIObjType_META_TYPE, unused */
181 NULL
, /* 16 GDIObjType_EFSTATE_TYPE, unused */
182 NULL
, /* 17 GDIObjType_BMFD_TYPE, unused */
183 NULL
, /* 18 GDIObjType_VTFD_TYPE, unused */
184 NULL
, /* 19 GDIObjType_TTFD_TYPE, unused */
185 NULL
, /* 1a GDIObjType_RC_TYPE, unused */
186 NULL
, /* 1b GDIObjType_TEMP_TYPE, unused */
187 DRIVEROBJ_vCleanup
,/* 1c GDIObjType_DRVOBJ_TYPE */
188 NULL
, /* 1d GDIObjType_DCIOBJ_TYPE, unused */
189 NULL
, /* 1e GDIObjType_SPOOL_TYPE, unused */
190 NULL
, /* 1f reserved entry */
197 NULL
, /* 00 GDIObjType_DEF_TYPE */
198 NULL
, /* 01 GDIObjType_DC_TYPE */
199 NULL
, /* 02 GDIObjType_UNUSED1_TYPE */
200 NULL
, /* 03 GDIObjType_UNUSED2_TYPE */
201 NULL
, /* 04 GDIObjType_RGN_TYPE */
202 NULL
, /* 05 GDIObjType_SURF_TYPE */
203 NULL
, /* 06 GDIObjType_CLIENTOBJ_TYPE */
204 NULL
, /* 07 GDIObjType_PATH_TYPE */
205 NULL
, /* 08 GDIObjType_PAL_TYPE */
206 NULL
, /* 09 GDIObjType_ICMLCS_TYPE */
207 NULL
, /* 0a GDIObjType_LFONT_TYPE */
208 NULL
, /* 0b GDIObjType_RFONT_TYPE, unused */
209 NULL
, /* 0c GDIObjType_PFE_TYPE, unused */
210 NULL
, /* 0d GDIObjType_PFT_TYPE, unused */
211 NULL
, /* 0e GDIObjType_ICMCXF_TYPE */
212 NULL
, /* 0f GDIObjType_SPRITE_TYPE, unused */
213 BRUSH_vDeleteObject
, /* 10 GDIObjType_BRUSH_TYPE, BRUSH, PEN, EXTPEN */
214 NULL
, /* 11 GDIObjType_UMPD_TYPE, unused */
215 NULL
, /* 12 GDIObjType_UNUSED4_TYPE */
216 NULL
, /* 13 GDIObjType_SPACE_TYPE, unused */
217 NULL
, /* 14 GDIObjType_UNUSED5_TYPE */
218 NULL
, /* 15 GDIObjType_META_TYPE, unused */
219 NULL
, /* 16 GDIObjType_EFSTATE_TYPE, unused */
220 NULL
, /* 17 GDIObjType_BMFD_TYPE, unused */
221 NULL
, /* 18 GDIObjType_VTFD_TYPE, unused */
222 NULL
, /* 19 GDIObjType_TTFD_TYPE, unused */
223 NULL
, /* 1a GDIObjType_RC_TYPE, unused */
224 NULL
, /* 1b GDIObjType_TEMP_TYPE, unused */
225 NULL
, /* 1c GDIObjType_DRVOBJ_TYPE */
226 NULL
, /* 1d GDIObjType_DCIOBJ_TYPE, unused */
227 NULL
, /* 1e GDIObjType_SPOOL_TYPE, unused */
228 NULL
, /* 1f reserved entry */
231 /* INTERNAL FUNCTIONS ********************************************************/
236 GDIOBJ_vCleanup(PVOID ObjectBody
)
243 InitLookasideList(UCHAR objt
, ULONG cjSize
)
245 ExInitializePagedLookasideList(&gpaLookasideList
[objt
],
250 GDITAG_HMGR_LOOKASIDE_START
+ (objt
<< 24),
257 InitGdiHandleTable(void)
260 LARGE_INTEGER liSize
;
262 SIZE_T cjViewSize
= 0;
264 /* Create a section for the shared handle table */
265 liSize
.QuadPart
= sizeof(GDI_HANDLE_TABLE
); // GDI_HANDLE_COUNT * sizeof(ENTRY);
266 status
= MmCreateSection(&gpvGdiHdlTblSection
,
274 if (!NT_SUCCESS(status
))
276 DPRINT1("INITGDI: Could not allocate a GDI handle table.\n");
280 /* Map the section in session space */
281 status
= MmMapViewInSessionSpace(gpvGdiHdlTblSection
,
284 if (!NT_SUCCESS(status
))
286 DPRINT1("INITGDI: Failed to map handle table section\n");
287 ObDereferenceObject(gpvGdiHdlTblSection
);
291 /* Allocate memory for the reference counter table */
292 gpaulRefCount
= EngAllocSectionMem(&pvSection
,
294 GDI_HANDLE_COUNT
* sizeof(ULONG
),
298 DPRINT1("INITGDI: Failed to allocate reference table.\n");
299 ObDereferenceObject(gpvGdiHdlTblSection
);
300 return STATUS_INSUFFICIENT_RESOURCES
;
304 gulFirstUnused
= RESERVE_ENTRIES_COUNT
;
306 GdiHandleTable
= (PVOID
)gpentHmgr
;
308 /* Initialize the lookaside lists */
309 gpaLookasideList
= ExAllocatePoolWithTag(NonPagedPool
,
310 GDIObjTypeTotal
* sizeof(PAGED_LOOKASIDE_LIST
),
312 if(!gpaLookasideList
)
313 return STATUS_NO_MEMORY
;
315 InitLookasideList(GDIObjType_DC_TYPE
, sizeof(DC
));
316 InitLookasideList(GDIObjType_RGN_TYPE
, sizeof(REGION
));
317 InitLookasideList(GDIObjType_SURF_TYPE
, sizeof(SURFACE
));
318 InitLookasideList(GDIObjType_CLIENTOBJ_TYPE
, sizeof(CLIENTOBJ
));
319 InitLookasideList(GDIObjType_PATH_TYPE
, sizeof(PATH
));
320 InitLookasideList(GDIObjType_PAL_TYPE
, sizeof(PALETTE
));
321 InitLookasideList(GDIObjType_ICMLCS_TYPE
, sizeof(COLORSPACE
));
322 InitLookasideList(GDIObjType_LFONT_TYPE
, sizeof(TEXTOBJ
));
323 InitLookasideList(GDIObjType_BRUSH_TYPE
, sizeof(BRUSH
));
325 return STATUS_SUCCESS
;
330 IncrementCurrentProcessGdiHandleCount(void)
332 PPROCESSINFO ppi
= PsGetCurrentProcessWin32Process();
333 if (ppi
) InterlockedIncrement((LONG
*)&ppi
->GDIHandleCount
);
338 DecrementCurrentProcessGdiHandleCount(void)
340 PPROCESSINFO ppi
= PsGetCurrentProcessWin32Process();
341 if (ppi
) InterlockedDecrement((LONG
*)&ppi
->GDIHandleCount
);
346 IncrementGdiHandleCount(ULONG ulProcessId
)
352 Status
= PsLookupProcessByProcessId(ULongToHandle(ulProcessId
), &pep
);
353 NT_ASSERT(NT_SUCCESS(Status
));
354 __analysis_assume(NT_SUCCESS(Status
));
356 ppi
= PsGetProcessWin32Process(pep
);
357 if (ppi
) InterlockedIncrement((LONG
*)&ppi
->GDIHandleCount
);
358 if (NT_SUCCESS(Status
)) ObDereferenceObject(pep
);
363 DecrementGdiHandleCount(ULONG ulProcessId
)
369 Status
= PsLookupProcessByProcessId(ULongToHandle(ulProcessId
), &pep
);
370 NT_ASSERT(NT_SUCCESS(Status
));
371 __analysis_assume(NT_SUCCESS(Status
));
373 ppi
= PsGetProcessWin32Process(pep
);
374 if (ppi
) InterlockedDecrement((LONG
*)&ppi
->GDIHandleCount
);
375 if (NT_SUCCESS(Status
)) ObDereferenceObject(pep
);
380 ENTRY_pentPopFreeEntry(VOID
)
382 ULONG iFirst
, iNext
, iPrev
;
385 DPRINT("Enter InterLockedPopFreeEntry\n");
389 /* Get the index and sequence number of the first free entry */
390 iFirst
= InterlockedReadUlong(&gulFirstFree
);
392 /* Check if we have a free entry */
393 if (!(iFirst
& GDI_HANDLE_INDEX_MASK
))
395 /* Increment FirstUnused and get the new index */
396 iFirst
= InterlockedIncrement((LONG
*)&gulFirstUnused
) - 1;
398 /* Check if we have unused entries left */
399 if (iFirst
>= GDI_HANDLE_COUNT
)
401 DPRINT1("No more GDI handles left!\n");
402 #if DBG_ENABLE_GDIOBJ_BACKTRACES
403 DbgDumpGdiHandleTableWithBT();
405 InterlockedDecrement((LONG
*)&gulFirstUnused
);
409 /* Return the old entry */
410 return &gpentHmgr
[iFirst
];
413 /* Get a pointer to the first free entry */
414 pentFree
= &gpentHmgr
[iFirst
& GDI_HANDLE_INDEX_MASK
];
416 /* Create a new value with an increased sequence number */
417 iNext
= GDI_HANDLE_GET_INDEX(pentFree
->einfo
.hFree
);
418 iNext
|= (iFirst
& ~GDI_HANDLE_INDEX_MASK
) + 0x10000;
420 /* Try to exchange the FirstFree value */
421 iPrev
= InterlockedCompareExchange((LONG
*)&gulFirstFree
,
425 while (iPrev
!= iFirst
);
427 /* Sanity check: is entry really free? */
428 ASSERT(((ULONG_PTR
)pentFree
->einfo
.pobj
& ~GDI_HANDLE_INDEX_MASK
) == 0);
433 /* Pushes an entry of the handle table to the free list,
434 The entry must not have any references left */
437 ENTRY_vPushFreeEntry(PENTRY pentFree
)
439 ULONG iToFree
, iFirst
, iPrev
, idxToFree
;
441 DPRINT("Enter ENTRY_vPushFreeEntry\n");
443 idxToFree
= pentFree
- gpentHmgr
;
444 ASSERT((gpaulRefCount
[idxToFree
] & REF_MASK_INUSE
) == 0);
446 /* Initialize entry */
447 pentFree
->Objt
= GDIObjType_DEF_TYPE
;
448 pentFree
->ObjectOwner
.ulObj
= 0;
449 pentFree
->pUser
= NULL
;
451 /* Increase reuse counter in entry and reference counter */
452 InterlockedExchangeAdd((LONG
*)&gpaulRefCount
[idxToFree
], REF_INC_REUSE
);
453 pentFree
->FullUnique
+= 0x0100;
457 /* Get the current first free index and sequence number */
458 iFirst
= InterlockedReadUlong(&gulFirstFree
);
460 /* Set the einfo.pobj member to the index of the first free entry */
461 pentFree
->einfo
.pobj
= UlongToPtr(iFirst
& GDI_HANDLE_INDEX_MASK
);
463 /* Combine new index and increased sequence number in iToFree */
464 iToFree
= idxToFree
| ((iFirst
& ~GDI_HANDLE_INDEX_MASK
) + 0x10000);
466 /* Try to atomically update the first free entry */
467 iPrev
= InterlockedCompareExchange((LONG
*)&gulFirstFree
,
471 while (iPrev
!= iFirst
);
476 ENTRY_ReferenceEntryByHandle(HGDIOBJ hobj
, FLONG fl
)
478 ULONG ulIndex
, cNewRefs
, cOldRefs
;
481 /* Get the handle index and check if its too big */
482 ulIndex
= GDI_HANDLE_GET_INDEX(hobj
);
484 /* Get pointer to the entry */
485 pentry
= &gpentHmgr
[ulIndex
];
487 /* Get the current reference count */
488 cOldRefs
= gpaulRefCount
[ulIndex
];
492 /* Check if the slot is deleted */
493 if ((cOldRefs
& REF_MASK_VALID
) == 0)
495 DPRINT("GDIOBJ: Slot is not valid: 0x%lx, hobh=%p\n", cOldRefs
, hobj
);
499 /* Check if the unique value matches */
500 if (pentry
->FullUnique
!= (USHORT
)((ULONG_PTR
)hobj
>> 16))
502 DPRINT("GDIOBJ: Wrong unique value. Handle: 0x%4x, entry: 0x%4x\n",
503 (USHORT
)((ULONG_PTR
)hobj
>> 16), pentry
->FullUnique
);
507 /* Check if the object owner is this process or public */
508 if (!(fl
& GDIOBJFLAG_IGNOREPID
) &&
509 pentry
->ObjectOwner
.ulObj
!= GDI_OBJ_HMGR_PUBLIC
&&
510 pentry
->ObjectOwner
.ulObj
!= PtrToUlong(PsGetCurrentProcessId()))
512 DPRINT("GDIOBJ: Cannot reference foreign handle %p, pentry=%p:%lx.\n",
513 hobj
, pentry
, pentry
->ObjectOwner
.ulObj
);
517 /* Try to atomically increment the reference count */
518 cNewRefs
= cOldRefs
+ 1;
519 cOldRefs
= InterlockedCompareExchange((PLONG
)&gpaulRefCount
[ulIndex
],
523 while (cNewRefs
!= cOldRefs
+ 1);
525 /* Integrity checks */
526 ASSERT((pentry
->FullUnique
& 0x1f) == pentry
->Objt
);
527 ASSERT(pentry
->einfo
.pobj
&& pentry
->einfo
.pobj
->hHmgr
== hobj
);
534 ENTRY_hInsertObject(PENTRY pentry
, POBJ pobj
, UCHAR objt
, ULONG ulOwner
)
538 /* Calculate the handle index */
539 ulIndex
= pentry
- gpentHmgr
;
541 /* Update the fields in the ENTRY */
542 pentry
->einfo
.pobj
= pobj
;
543 pentry
->Objt
= objt
& 0x1f;
544 pentry
->FullUnique
= (pentry
->FullUnique
& 0xff00) | objt
;
545 pentry
->ObjectOwner
.ulObj
= ulOwner
;
547 /* Make the handle valid with 1 reference */
548 ASSERT((gpaulRefCount
[ulIndex
] & REF_MASK_INUSE
) == 0);
549 InterlockedOr((LONG
*)&gpaulRefCount
[ulIndex
], REF_MASK_VALID
| 1);
551 /* Return the handle */
552 return (HGDIOBJ
)(((ULONG_PTR
)pentry
->FullUnique
<< 16) | ulIndex
);
557 GDIOBJ_AllocateObject(UCHAR objt
, ULONG cjSize
, FLONG fl
)
561 if (fl
& BASEFLAG_LOOKASIDE
)
563 /* Allocate the object from a lookaside list */
564 pobj
= ExAllocateFromPagedLookasideList(&gpaLookasideList
[objt
& 0x1f]);
568 /* Allocate the object from paged pool */
569 pobj
= ExAllocatePoolWithTag(PagedPool
, cjSize
, GDIOBJ_POOL_TAG(objt
));
572 if (!pobj
) return NULL
;
574 /* Initialize the object */
575 RtlZeroMemory(pobj
, cjSize
);
576 pobj
->hHmgr
= (HGDIOBJ
)((ULONG_PTR
)objt
<< 16);
577 pobj
->cExclusiveLock
= 0;
578 pobj
->ulShareCount
= 1;
579 pobj
->BaseFlags
= fl
& 0xffff;
580 DBG_INITLOG(&pobj
->slhLog
);
581 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_ALLOCATE
, 0);
582 #if DBG_ENABLE_GDIOBJ_BACKTRACES
583 DbgCaptureStackBackTace(pobj
->apvBackTrace
, 1, GDI_OBJECT_STACK_LEVELS
);
584 #endif /* GDI_DEBUG */
591 GDIOBJ_vFreeObject(POBJ pobj
)
595 DBG_CLEANUP_EVENT_LIST(&pobj
->slhLog
);
597 /* Get the object type */
598 objt
= ((ULONG_PTR
)pobj
->hHmgr
>> 16) & 0x1f;
600 /* Check if we have a delete procedure (for C++ based objects) */
601 if (apfnDelete
[objt
] != NULL
)
603 /* Invoke the delete procedure */
604 apfnDelete
[objt
](pobj
);
608 /* Call the cleanup procedure */
609 NT_ASSERT(apfnCleanup
[objt
]);
610 apfnCleanup
[objt
](pobj
);
612 /* Check if the object is allocated from a lookaside list */
613 if (pobj
->BaseFlags
& BASEFLAG_LOOKASIDE
)
615 ExFreeToPagedLookasideList(&gpaLookasideList
[objt
], pobj
);
619 ExFreePoolWithTag(pobj
, GDIOBJ_POOL_TAG(objt
));
626 GDIOBJ_vDereferenceObject(POBJ pobj
)
628 ULONG cRefs
, ulIndex
;
630 /* Calculate the index */
631 ulIndex
= GDI_HANDLE_GET_INDEX(pobj
->hHmgr
);
633 /* Check if the object has a handle */
636 /* Decrement reference count */
637 if ((gpaulRefCount
[ulIndex
] & REF_MASK_COUNT
) == 0)
639 DBG_DUMP_EVENT_LIST(&pobj
->slhLog
);
641 ASSERT((gpaulRefCount
[ulIndex
] & REF_MASK_COUNT
) > 0);
642 cRefs
= InterlockedDecrement((LONG
*)&gpaulRefCount
[ulIndex
]);
643 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_DEREFERENCE
, cRefs
);
645 /* Check if we reached 0 and handle bit is not set */
646 if ((cRefs
& REF_MASK_INUSE
) == 0)
648 /* Make sure it's ok to delete the object */
649 ASSERT(pobj
->BaseFlags
& BASEFLAG_READY_TO_DIE
);
651 /* Check if the handle was process owned */
652 if (gpentHmgr
[ulIndex
].ObjectOwner
.ulObj
!= GDI_OBJ_HMGR_PUBLIC
&&
653 gpentHmgr
[ulIndex
].ObjectOwner
.ulObj
!= GDI_OBJ_HMGR_NONE
)
655 /* Decrement the process handle count */
656 ASSERT(gpentHmgr
[ulIndex
].ObjectOwner
.ulObj
==
657 HandleToUlong(PsGetCurrentProcessId()));
658 DecrementCurrentProcessGdiHandleCount();
661 /* Push entry to the free list */
662 ENTRY_vPushFreeEntry(&gpentHmgr
[ulIndex
]);
664 /* Free the object */
665 GDIOBJ_vFreeObject(pobj
);
670 /* Decrement the objects reference count */
671 ASSERT(pobj
->ulShareCount
> 0);
672 cRefs
= InterlockedDecrement((LONG
*)&pobj
->ulShareCount
);
673 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_DEREFERENCE
, cRefs
);
675 /* Check if we reached 0 */
678 /* Free the object */
679 GDIOBJ_vFreeObject(pobj
);
686 GDIOBJ_ReferenceObjectByHandle(
693 /* Check if the handle type matches */
694 ASSERT_SHARED_OBJECT_TYPE(objt
);
695 if ((((ULONG_PTR
)hobj
>> 16) & 0x1f) != objt
)
697 DPRINT("GDIOBJ: Wrong type. handle=%p, type=%x\n", hobj
, objt
);
701 /* Reference the handle entry */
702 pentry
= ENTRY_ReferenceEntryByHandle(hobj
, 0);
705 DPRINT("GDIOBJ: Requested handle 0x%p is not valid.\n", hobj
);
709 /* Get the pointer to the BASEOBJECT */
710 pobj
= pentry
->einfo
.pobj
;
712 /* Check if the object is exclusively locked */
713 if (pobj
->cExclusiveLock
!= 0)
715 DPRINT1("GDIOBJ: Cannot reference object %p with exclusive lock.\n", hobj
);
716 GDIOBJ_vDereferenceObject(pobj
);
717 DBG_DUMP_EVENT_LIST(&pobj
->slhLog
);
721 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_REFERENCE
, gpaulRefCount
[pentry
- gpentHmgr
]);
723 /* All is well, return the object */
729 GDIOBJ_vReferenceObjectByPointer(POBJ pobj
)
733 /* Check if the object has a handle */
734 if (GDI_HANDLE_GET_INDEX(pobj
->hHmgr
))
736 /* Increase the handle's reference count */
737 ULONG ulIndex
= GDI_HANDLE_GET_INDEX(pobj
->hHmgr
);
738 ASSERT((gpaulRefCount
[ulIndex
] & REF_MASK_COUNT
) > 0);
739 cRefs
= InterlockedIncrement((LONG
*)&gpaulRefCount
[ulIndex
]);
743 /* Increase the object's reference count */
744 cRefs
= InterlockedIncrement((LONG
*)&pobj
->ulShareCount
);
747 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_REFERENCE
, cRefs
);
752 GDIOBJ_TryLockObject(
760 /* Check if the handle type matches */
761 ASSERT_TRYLOCK_OBJECT_TYPE(objt
);
762 if ((((ULONG_PTR
)hobj
>> 16) & 0x1f) != objt
)
764 DPRINT("Wrong object type: hobj=0x%p, objt=0x%x\n", hobj
, objt
);
768 /* Make sure lock order is correct */
769 ASSERT_LOCK_ORDER(objt
);
771 /* Reference the handle entry */
772 pentry
= ENTRY_ReferenceEntryByHandle(hobj
, 0);
775 DPRINT("GDIOBJ: Requested handle 0x%p is not valid.\n", hobj
);
779 /* Get the pointer to the BASEOBJECT */
780 pobj
= pentry
->einfo
.pobj
;
782 /* Check if we already own the lock */
783 dwThreadId
= PtrToUlong(PsGetCurrentThreadId());
784 if (pobj
->dwThreadId
!= dwThreadId
)
786 /* Disable APCs and try acquiring the push lock */
787 KeEnterCriticalRegion();
788 if(!ExTryAcquirePushLockExclusive(&pobj
->pushlock
))
790 ULONG cRefs
, ulIndex
;
791 /* Already owned. Clean up and leave. */
792 KeLeaveCriticalRegion();
794 /* Calculate the index */
795 ulIndex
= GDI_HANDLE_GET_INDEX(pobj
->hHmgr
);
797 /* Decrement reference count */
798 ASSERT((gpaulRefCount
[ulIndex
] & REF_MASK_COUNT
) > 0);
799 cRefs
= InterlockedDecrement((LONG
*)&gpaulRefCount
[ulIndex
]);
800 ASSERT(cRefs
& REF_MASK_VALID
);
805 /* Set us as lock owner */
806 ASSERT(pobj
->dwThreadId
== 0);
807 pobj
->dwThreadId
= dwThreadId
;
810 /* Increase lock count */
811 pobj
->cExclusiveLock
++;
812 INCREASE_THREAD_LOCK_COUNT(hobj
);
813 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_LOCK
, 0);
815 /* Return the object */
829 /* Check if the handle type matches */
830 ASSERT_EXCLUSIVE_OBJECT_TYPE(objt
);
831 if ((((ULONG_PTR
)hobj
>> 16) & 0x1f) != objt
)
833 DPRINT("Wrong object type: hobj=0x%p, objt=0x%x\n", hobj
, objt
);
837 /* Make sure lock order is correct */
838 ASSERT_LOCK_ORDER(objt
);
840 /* Reference the handle entry */
841 pentry
= ENTRY_ReferenceEntryByHandle(hobj
, 0);
844 DPRINT("GDIOBJ: Requested handle 0x%p is not valid.\n", hobj
);
848 /* Get the pointer to the BASEOBJECT */
849 pobj
= pentry
->einfo
.pobj
;
851 /* Check if we already own the lock */
852 dwThreadId
= PtrToUlong(PsGetCurrentThreadId());
853 if (pobj
->dwThreadId
!= dwThreadId
)
855 /* Disable APCs and acquire the push lock */
856 KeEnterCriticalRegion();
857 ExAcquirePushLockExclusive(&pobj
->pushlock
);
859 /* Set us as lock owner */
860 ASSERT(pobj
->dwThreadId
== 0);
861 pobj
->dwThreadId
= dwThreadId
;
864 /* Increase lock count */
865 pobj
->cExclusiveLock
++;
866 INCREASE_THREAD_LOCK_COUNT(hobj
);
867 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_LOCK
, 0);
869 /* Return the object */
875 GDIOBJ_vUnlockObject(POBJ pobj
)
877 ULONG cRefs
, ulIndex
;
878 ASSERT(pobj
->cExclusiveLock
> 0);
880 /* Decrease lock count */
881 pobj
->cExclusiveLock
--;
882 DECREASE_THREAD_LOCK_COUNT(pobj
->hHmgr
);
883 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_UNLOCK
, 0);
885 /* Check if this was the last lock */
886 if (pobj
->cExclusiveLock
== 0)
888 /* Reset lock owner */
889 pobj
->dwThreadId
= 0;
891 /* Release the pushlock and reenable APCs */
892 ExReleasePushLockExclusive(&pobj
->pushlock
);
893 KeLeaveCriticalRegion();
896 /* Calculate the index */
897 ulIndex
= GDI_HANDLE_GET_INDEX(pobj
->hHmgr
);
899 /* Decrement reference count */
900 ASSERT((gpaulRefCount
[ulIndex
] & REF_MASK_COUNT
) > 0);
901 cRefs
= InterlockedDecrement((LONG
*)&gpaulRefCount
[ulIndex
]);
902 ASSERT(cRefs
& REF_MASK_VALID
);
907 GDIOBJ_hInsertObject(
914 /* Must have no handle and only one reference */
915 ASSERT(GDI_HANDLE_GET_INDEX(pobj
->hHmgr
) == 0);
916 ASSERT(pobj
->cExclusiveLock
== 0);
917 ASSERT(pobj
->ulShareCount
== 1);
919 /* Get a free handle entry */
920 pentry
= ENTRY_pentPopFreeEntry();
923 DPRINT1("GDIOBJ: Could not get a free entry.\n");
927 /* Make the object exclusively locked */
928 ExInitializePushLock(&pobj
->pushlock
);
929 KeEnterCriticalRegion();
930 ExAcquirePushLockExclusive(&pobj
->pushlock
);
931 pobj
->cExclusiveLock
= 1;
932 pobj
->dwThreadId
= PtrToUlong(PsGetCurrentThreadId());
933 INCREASE_THREAD_LOCK_COUNT(pobj
->hHmgr
);
935 /* Get object type from the hHmgr field */
936 objt
= ((ULONG_PTR
)pobj
->hHmgr
>> 16) & 0xff;
937 ASSERT(objt
!= GDIObjType_DEF_TYPE
);
939 /* Check if current process is requested owner */
940 if (ulOwner
== GDI_OBJ_HMGR_POWNED
)
942 /* Increment the process handle count */
943 IncrementCurrentProcessGdiHandleCount();
946 ulOwner
= HandleToUlong(PsGetCurrentProcessId());
949 /* Insert the object into the handle table */
950 pobj
->hHmgr
= ENTRY_hInsertObject(pentry
, pobj
, objt
, ulOwner
);
952 /* Return the handle */
953 DPRINT("GDIOBJ: Created handle: %p\n", pobj
->hHmgr
);
954 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_CREATE_HANDLE
, 0);
960 GDIOBJ_vSetObjectOwner(
967 /* This is a ugly HACK, needed to fix IntGdiSetDCOwnerEx */
968 if (GDI_HANDLE_IS_STOCKOBJ(pobj
->hHmgr
))
970 DPRINT("Trying to set ownership of stock object %p to %lx\n", pobj
->hHmgr
, ulNewOwner
);
974 /* Get the handle entry */
975 NT_ASSERT(GDI_HANDLE_GET_INDEX(pobj
->hHmgr
));
976 pentry
= &gpentHmgr
[GDI_HANDLE_GET_INDEX(pobj
->hHmgr
)];
978 /* Check if the new owner is the same as the old one */
979 ulOldOwner
= pentry
->ObjectOwner
.ulObj
;
980 if (ulOldOwner
== ulNewOwner
)
986 /* Is the current process requested? */
987 if (ulNewOwner
== GDI_OBJ_HMGR_POWNED
)
990 ulNewOwner
= HandleToUlong(PsGetCurrentProcessId());
994 if (ulNewOwner
== GDI_OBJ_HMGR_NONE
)
995 ulNewOwner
= GDI_OBJ_HMGR_PUBLIC
;
997 /* Was the object process owned? */
998 if ((ulOldOwner
!= GDI_OBJ_HMGR_PUBLIC
) &&
999 (ulOldOwner
!= GDI_OBJ_HMGR_NONE
))
1001 /* Decrement the previous owners handle count */
1002 DecrementGdiHandleCount(ulOldOwner
);
1005 /* Is the new owner a process? */
1006 if ((ulNewOwner
!= GDI_OBJ_HMGR_PUBLIC
) &&
1007 (ulNewOwner
!= GDI_OBJ_HMGR_NONE
))
1009 /* Increment the new owners handle count */
1010 IncrementGdiHandleCount(ulNewOwner
);
1014 /* Make sure we don't leak user mode memory */
1015 NT_ASSERT(pentry
->pUser
== NULL
);
1019 pentry
->ObjectOwner
.ulObj
= ulNewOwner
;
1020 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_SET_OWNER
, 0);
1023 /* Locks 2 or 3 objects at a time */
1026 GDIOBJ_bLockMultipleObjects(
1032 UINT auiIndices
[3] = {0, 1, 2};
1035 ASSERT(ulCount
<= 3);
1037 /* Sort the handles */
1038 for (i
= 0; i
< ulCount
- 1; i
++)
1040 for (j
= i
+ 1; j
< ulCount
; j
++)
1042 if ((ULONG_PTR
)ahObj
[auiIndices
[i
]] <
1043 (ULONG_PTR
)ahObj
[auiIndices
[j
]])
1045 tmp
= auiIndices
[i
];
1046 auiIndices
[i
] = auiIndices
[j
];
1047 auiIndices
[j
] = tmp
;
1052 /* Lock the objects in safe order */
1053 for (i
= 0; i
< ulCount
; i
++)
1055 /* Skip NULL handles */
1056 if (ahObj
[auiIndices
[i
]] == NULL
)
1058 apObj
[auiIndices
[i
]] = NULL
;
1062 /* Lock the object */
1063 apObj
[auiIndices
[i
]] = GDIOBJ_LockObject(ahObj
[auiIndices
[i
]], objt
);
1065 /* Check for failure */
1066 if (apObj
[auiIndices
[i
]] == NULL
)
1071 if (apObj
[auiIndices
[i
]])
1072 GDIOBJ_vUnlockObject(apObj
[auiIndices
[i
]]);
1083 GDIOBJ_pvGetObjectAttr(POBJ pobj
)
1085 ULONG ulIndex
= GDI_HANDLE_GET_INDEX(pobj
->hHmgr
);
1086 return gpentHmgr
[ulIndex
].pUser
;
1091 GDIOBJ_vSetObjectAttr(POBJ pobj
, PVOID pvObjAttr
)
1095 ASSERT(pobj
->hHmgr
);
1097 /* Get the handle index */
1098 ulIndex
= GDI_HANDLE_GET_INDEX(pobj
->hHmgr
);
1100 /* Set pointer to the usermode attribute */
1101 gpentHmgr
[ulIndex
].pUser
= pvObjAttr
;
1106 GDIOBJ_vDeleteObject(POBJ pobj
)
1110 /* Set the object's delete flag */
1111 InterlockedOr16((SHORT
*)&pobj
->BaseFlags
, BASEFLAG_READY_TO_DIE
);
1112 DBG_LOGEVENT(&pobj
->slhLog
, EVENT_DELETE
, 0);
1114 /* Get the handle index */
1115 ulIndex
= GDI_HANDLE_GET_INDEX(pobj
->hHmgr
);
1118 /* Reset the handle valid bit */
1119 InterlockedAnd((LONG
*)&gpaulRefCount
[ulIndex
], ~REF_MASK_VALID
);
1121 /* Check if the object is exclusively locked */
1122 if (pobj
->cExclusiveLock
!= 0)
1124 /* Reset lock owner and lock count */
1125 pobj
->dwThreadId
= 0;
1126 pobj
->cExclusiveLock
= 0;
1128 /* Release the pushlock and reenable APCs */
1129 ExReleasePushLockExclusive(&pobj
->pushlock
);
1130 KeLeaveCriticalRegion();
1131 DECREASE_THREAD_LOCK_COUNT(pobj
->hHmgr
);
1135 /* Dereference the object (will take care of deletion) */
1136 GDIOBJ_vDereferenceObject(pobj
);
1141 GreIsHandleValid(HGDIOBJ hobj
)
1145 pentry
= ENTRY_ReferenceEntryByHandle(hobj
, 0);
1146 if (!pentry
) return FALSE
;
1147 GDIOBJ_vDereferenceObject(pentry
->einfo
.pobj
);
1153 GreDeleteObject(HGDIOBJ hobj
)
1157 /* Check for stock objects */
1158 if (GDI_HANDLE_IS_STOCKOBJ(hobj
))
1160 DPRINT1("GreDeleteObject: Cannot delete stock object %p.\n", hobj
);
1164 /* Reference the handle entry */
1165 pentry
= ENTRY_ReferenceEntryByHandle(hobj
, 0);
1168 DPRINT1("GreDeleteObject: Trying to delete invalid object %p\n", hobj
);
1172 /* Check for public owner */
1173 if (pentry
->ObjectOwner
.ulObj
== GDI_OBJ_HMGR_PUBLIC
)
1175 DPRINT1("GreDeleteObject: Trying to delete global object %p\n", hobj
);
1176 GDIOBJ_vDereferenceObject(pentry
->einfo
.pobj
);
1180 /* Delete the object */
1181 GDIOBJ_vDeleteObject(pentry
->einfo
.pobj
);
1187 GreGetObjectOwner(HGDIOBJ hobj
)
1189 ULONG ulIndex
, ulOwner
;
1191 /* Get the handle index */
1192 ulIndex
= GDI_HANDLE_GET_INDEX(hobj
);
1194 /* Check if the handle is valid */
1195 if (ulIndex
>= GDI_HANDLE_COUNT
||
1196 gpentHmgr
[ulIndex
].Objt
== GDIObjType_DEF_TYPE
||
1197 ((ULONG_PTR
)hobj
>> 16) != gpentHmgr
[ulIndex
].FullUnique
)
1199 DPRINT1("GreGetObjectOwner: invalid handle 0x%p.\n", hobj
);
1200 return GDI_OBJ_HMGR_RESTRICTED
;
1203 /* Get the object owner */
1204 ulOwner
= gpentHmgr
[ulIndex
].ObjectOwner
.ulObj
;
1206 if (ulOwner
== HandleToUlong(PsGetCurrentProcessId()))
1207 return GDI_OBJ_HMGR_POWNED
;
1209 if (ulOwner
== GDI_OBJ_HMGR_PUBLIC
)
1210 return GDI_OBJ_HMGR_PUBLIC
;
1212 return GDI_OBJ_HMGR_RESTRICTED
;
1217 GreSetObjectOwnerEx(
1224 /* Check for stock objects */
1225 if (GDI_HANDLE_IS_STOCKOBJ(hobj
))
1227 DPRINT("GreSetObjectOwner: Got stock object %p\n", hobj
);
1231 /* Reference the handle entry */
1232 pentry
= ENTRY_ReferenceEntryByHandle(hobj
, Flags
);
1235 DPRINT("GreSetObjectOwner: Invalid handle 0x%p.\n", hobj
);
1239 /* Call internal function */
1240 GDIOBJ_vSetObjectOwner(pentry
->einfo
.pobj
, ulOwner
);
1242 /* Dereference the object */
1243 GDIOBJ_vDereferenceObject(pentry
->einfo
.pobj
);
1254 return GreSetObjectOwnerEx(hobj
, ulOwner
, 0);
1268 /* Verify object type */
1269 objt
= ((ULONG_PTR
)hobj
>> 16) & 0x1f;
1270 if (objt
!= GDIObjType_BRUSH_TYPE
&&
1271 objt
!= GDIObjType_SURF_TYPE
&&
1272 objt
!= GDIObjType_LFONT_TYPE
&&
1273 objt
!= GDIObjType_PAL_TYPE
)
1275 DPRINT1("GreGetObject: Invalid object type\n");
1279 pvObj
= GDIOBJ_ReferenceObjectByHandle(hobj
, objt
);
1282 DPRINT("GreGetObject: Could not lock object\n");
1286 switch (GDI_HANDLE_GET_TYPE(hobj
))
1288 case GDILoObjType_LO_PEN_TYPE
:
1289 case GDILoObjType_LO_EXTPEN_TYPE
:
1290 iResult
= PEN_GetObject(pvObj
, cbCount
, pvBuffer
);
1293 case GDILoObjType_LO_BRUSH_TYPE
:
1294 iResult
= BRUSH_GetObject(pvObj
, cbCount
, pvBuffer
);
1297 case GDILoObjType_LO_BITMAP_TYPE
:
1298 iResult
= BITMAP_GetObject(pvObj
, cbCount
, pvBuffer
);
1301 case GDILoObjType_LO_FONT_TYPE
:
1302 iResult
= FontGetObject(pvObj
, cbCount
, pvBuffer
);
1305 case GDILoObjType_LO_PALETTE_TYPE
:
1306 iResult
= PALETTE_GetObject(pvObj
, cbCount
, pvBuffer
);
1310 DPRINT1("GDI object type of 0x%p not implemented\n", hobj
);
1314 GDIOBJ_vDereferenceObject(pvObj
);
1323 IN INT cjBufferSize
,
1324 OUT LPVOID lpBuffer
)
1326 UINT iResult
, cjMaxSize
;
1330 DIBSECTION dibsection
;
1334 EXTLOGFONTW extlogfontw
;
1335 ENUMLOGFONTEXDVW enumlogfontexdvw
;
1338 /* Normalize to the largest supported object size */
1339 cjMaxSize
= min((UINT
)cjBufferSize
, sizeof(object
));
1341 /* Now do the actual call */
1342 iResult
= GreGetObject(hobj
, cjMaxSize
, lpBuffer
? &object
: NULL
);
1344 /* Check if we have a buffer and data */
1345 if ((lpBuffer
!= NULL
) && (iResult
!= 0))
1347 /* Enter SEH for buffer transfer */
1350 /* Probe the buffer and copy it */
1351 cjMaxSize
= min(cjMaxSize
, iResult
);
1352 ProbeForWrite(lpBuffer
, cjMaxSize
, sizeof(WORD
));
1353 RtlCopyMemory(lpBuffer
, &object
, cjMaxSize
);
1355 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER
)
1357 /* Clear the return value.
1358 * Do *NOT* set last error here! */
1364 /* Return the count */
1371 NtGdiCreateClientObj(
1377 /* Check if ulType is valid */
1378 if ((ulType
!= GDILoObjType_LO_METAFILE16_TYPE
) &&
1379 (ulType
!= GDILoObjType_LO_METAFILE_TYPE
) &&
1380 (ulType
!= GDILoObjType_LO_METADC16_TYPE
))
1382 DPRINT1("NtGdiCreateClientObj: Invalid object type 0x%lx.\n", ulType
);
1386 /* Allocate a new object */
1387 pObject
= GDIOBJ_AllocateObject(GDIObjType_CLIENTOBJ_TYPE
,
1389 BASEFLAG_LOOKASIDE
);
1392 DPRINT1("NtGdiCreateClientObj: Could not allocate a clientobj.\n");
1396 /* Set the real object type */
1397 pObject
->hHmgr
= UlongToHandle(ulType
| GDILoObjType_LO_CLIENTOBJ_TYPE
);
1399 /* Create a handle */
1400 handle
= GDIOBJ_hInsertObject(pObject
, GDI_OBJ_HMGR_POWNED
);
1403 DPRINT1("NtGdiCreateClientObj: Could not create a handle.\n");
1404 GDIOBJ_vFreeObject(pObject
);
1409 GDIOBJ_vUnlockObject(pObject
);
1417 NtGdiDeleteClientObj(
1420 /* We first need to get the real type from the handle */
1421 ULONG ulType
= GDI_HANDLE_GET_TYPE(hobj
);
1423 /* Check if it's really a CLIENTOBJ */
1424 if ((ulType
& GDI_HANDLE_BASETYPE_MASK
) != GDILoObjType_LO_CLIENTOBJ_TYPE
)
1426 /* FIXME: SetLastError? */
1430 return GreDeleteObject(hobj
);
1435 PGDI_HANDLE_TABLE GdiHandleTable
= NULL
;
1438 GDIOBJ_ShareLockObj(HGDIOBJ hObj
, DWORD ExpectedType
)
1440 if (ExpectedType
== GDI_OBJECT_TYPE_DONTCARE
)
1441 ExpectedType
= GDI_HANDLE_GET_TYPE(hObj
);
1442 return GDIOBJ_ReferenceObjectByHandle(hObj
, (ExpectedType
>> 16) & 0x1f);
1445 // This function is not safe to use with concurrent deleting attempts
1446 // That shouldn't be a problem, since we don't have any processes yet,
1447 // that could delete the handle
1450 GDIOBJ_ConvertToStockObj(HGDIOBJ
*phObj
)
1455 /* Reference the handle entry */
1456 pentry
= ENTRY_ReferenceEntryByHandle(*phObj
, 0);
1459 DPRINT1("GDIOBJ: Requested handle 0x%p is not valid.\n", *phObj
);
1463 /* Update the entry */
1464 pentry
->FullUnique
|= GDI_ENTRY_STOCK_MASK
;
1465 pentry
->ObjectOwner
.ulObj
= 0;
1467 /* Get the pointer to the BASEOBJECT */
1468 pobj
= pentry
->einfo
.pobj
;
1470 /* Calculate the new handle */
1471 pobj
->hHmgr
= (HGDIOBJ
)((ULONG_PTR
)pobj
->hHmgr
| GDI_HANDLE_STOCK_MASK
);
1473 /* Return the new handle */
1474 *phObj
= pobj
->hHmgr
;
1476 /* Dereference the handle */
1477 GDIOBJ_vDereferenceObject(pobj
);
1483 GDIOBJ_AllocObjWithHandle(ULONG ObjectType
, ULONG cjSize
)
1487 UCHAR objt
= (ObjectType
>> 16) & 0xFF;
1489 if ((objt
== GDIObjType_DC_TYPE
&& cjSize
== sizeof(DC
)) ||
1490 (objt
== GDIObjType_PAL_TYPE
&& cjSize
== sizeof(PALETTE
)) ||
1491 (objt
== GDIObjType_RGN_TYPE
&& cjSize
== sizeof(REGION
)) ||
1492 (objt
== GDIObjType_SURF_TYPE
&& cjSize
== sizeof(SURFACE
)) ||
1493 (objt
== GDIObjType_PATH_TYPE
&& cjSize
== sizeof(PATH
)))
1495 fl
|= BASEFLAG_LOOKASIDE
;
1498 pobj
= GDIOBJ_AllocateObject(objt
, cjSize
, fl
);
1504 if (!GDIOBJ_hInsertObject(pobj
, GDI_OBJ_HMGR_POWNED
))
1506 GDIOBJ_vFreeObject(pobj
);
1513 GDI_MapHandleTable(PEPROCESS pProcess
)
1515 PVOID pvMappedView
= NULL
;
1517 LARGE_INTEGER liOffset
;
1518 SIZE_T cjViewSize
= sizeof(GDI_HANDLE_TABLE
);
1520 liOffset
.QuadPart
= 0;
1522 ASSERT(gpvGdiHdlTblSection
!= NULL
);
1523 ASSERT(pProcess
!= NULL
);
1525 Status
= MmMapViewOfSection(gpvGdiHdlTblSection
,
1536 if (!NT_SUCCESS(Status
))
1539 return pvMappedView
;
1543 GDI_CleanupForProcess(struct _EPROCESS
*Process
)
1550 DPRINT("CleanupForProcess prochandle %p Pid %p\n",
1551 Process
, Process
->UniqueProcessId
);
1553 ASSERT(Process
== PsGetCurrentProcess());
1555 /* Get the current process Id */
1556 dwProcessId
= PtrToUlong(PsGetCurrentProcessId());
1558 /* Loop all handles in the handle table */
1559 for (ulIndex
= RESERVE_ENTRIES_COUNT
; ulIndex
< gulFirstUnused
; ulIndex
++)
1561 pentry
= &gpentHmgr
[ulIndex
];
1563 /* Check if the object is owned by the process */
1564 if (pentry
->ObjectOwner
.ulObj
== dwProcessId
)
1566 ASSERT(pentry
->einfo
.pobj
->cExclusiveLock
== 0);
1568 /* Reference the object and delete it */
1569 InterlockedIncrement((LONG
*)&gpaulRefCount
[ulIndex
]);
1570 GDIOBJ_vDeleteObject(pentry
->einfo
.pobj
);
1575 DbgGdiHTIntegrityCheck();
1578 ppi
= PsGetCurrentProcessWin32Process();
1579 DPRINT("Completed cleanup for process %p\n", Process
->UniqueProcessId
);
1580 if (ppi
->GDIHandleCount
!= 0)
1582 DPRINT1("Leaking %d handles!\n", ppi
->GDIHandleCount
);
1586 /* Loop all handles in the handle table */
1587 for (ulIndex
= RESERVE_ENTRIES_COUNT
; ulIndex
< gulFirstUnused
; ulIndex
++)
1589 pentry
= &gpentHmgr
[ulIndex
];
1591 /* Check if the object is owned by the process */
1592 if (pentry
->ObjectOwner
.ulObj
== dwProcessId
)
1594 DPRINT1("Leaking object. Index=%lx, type=0x%x, refcount=%lx\n",
1595 ulIndex
, pentry
->Objt
, gpaulRefCount
[ulIndex
]);
1596 DBG_DUMP_EVENT_LIST(&pentry
->einfo
.pobj
->slhLog
);
1597 //DBG_CLEANUP_EVENT_LIST(&pentry->einfo.pobj->slhLog);
1607 GetBrushAttrPool(VOID
)
1611 ppi
= PsGetCurrentProcessWin32Process();
1612 NT_ASSERT(ppi
!= NULL
);
1614 return ppi
->pPoolBrushAttr
;