mirror of
https://github.com/reactos/reactos.git
synced 2024-09-14 23:01:53 +00:00
b0aa4f5a2c
- clean up some unused code - use GDIOBJ_IncrementShareCount on Timo suggestion - use ppdev semaphore as sort criterion in DC_vPrepareDCsForBlit, spotted by Timo - Get ownership before freeing the object in GDIOBJ_ShareUnlockObjByPtr, as whoever set it ready to die had the right to svn path=/branches/reactos-yarotows/; revision=47205
139 lines
4.1 KiB
C
139 lines
4.1 KiB
C
/*
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* GDI object common header definition
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*
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*/
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#pragma once
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/* Public GDI Object/Handle definitions */
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#include <win32k/ntgdihdl.h>
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#include "win32.h"
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typedef struct _GDI_HANDLE_TABLE
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{
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/* The table must be located at the beginning of this structure so it can be
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* properly mapped!
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*/
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//////////////////////////////////////////////////////////////////////////////
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GDI_TABLE_ENTRY Entries[GDI_HANDLE_COUNT];
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DEVCAPS DevCaps; // Device Capabilities.
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FLONG flDeviceUniq; // Device settings uniqueness.
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PVOID pvLangPack; // Language Pack.
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CFONT cfPublic[GDI_CFONT_MAX]; // Public Fonts.
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DWORD dwCFCount;
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//////////////////////////////////////////////////////////////////////////////
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PPAGED_LOOKASIDE_LIST LookasideLists;
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ULONG FirstFree;
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ULONG FirstUnused;
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} GDI_HANDLE_TABLE, *PGDI_HANDLE_TABLE;
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extern PGDI_HANDLE_TABLE GdiHandleTable;
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typedef PVOID PGDIOBJ;
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typedef BOOL (INTERNAL_CALL *GDICLEANUPPROC)(PVOID ObjectBody);
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/* Every GDI Object must have this standard type of header.
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* It's for thread locking. */
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typedef struct _BASEOBJECT
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{
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HGDIOBJ hHmgr;
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ULONG ulShareCount;
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USHORT cExclusiveLock;
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USHORT BaseFlags;
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PTHREADINFO Tid;
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} BASEOBJECT, *POBJ;
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typedef struct _CLIENTOBJ
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{
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BASEOBJECT BaseObject;
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} CLIENTOBJ, *PCLIENTOBJ;
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enum BASEFLAGS
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{
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BASEFLAG_LOOKASIDE = 0x80,
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/* ReactOS specific: */
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BASEFLAG_READY_TO_DIE = 0x1000
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};
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BOOL INTERNAL_CALL GDIOBJ_OwnedByCurrentProcess(HGDIOBJ ObjectHandle);
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BOOL INTERNAL_CALL GDIOBJ_SetOwnership(HGDIOBJ ObjectHandle, PEPROCESS Owner);
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BOOL INTERNAL_CALL GDIOBJ_CopyOwnership(HGDIOBJ CopyFrom, HGDIOBJ CopyTo);
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BOOL INTERNAL_CALL GDIOBJ_ConvertToStockObj(HGDIOBJ *hObj);
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//VOID INTERNAL_CALL GDIOBJ_ShareUnlockObjByPtr(POBJ Object);
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BOOL INTERNAL_CALL GDIOBJ_ValidateHandle(HGDIOBJ hObj, ULONG ObjectType);
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POBJ INTERNAL_CALL GDIOBJ_AllocObj(UCHAR ObjectType);
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POBJ INTERNAL_CALL GDIOBJ_AllocObjWithHandle(ULONG ObjectType);
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VOID INTERNAL_CALL GDIOBJ_FreeObj (POBJ pObj, UCHAR ObjectType);
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BOOL INTERNAL_CALL GDIOBJ_FreeObjByHandle (HGDIOBJ hObj, DWORD ObjectType);
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PGDIOBJ INTERNAL_CALL GDIOBJ_LockObj (HGDIOBJ hObj, DWORD ObjectType);
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PGDIOBJ INTERNAL_CALL GDIOBJ_ShareLockObj (HGDIOBJ hObj, DWORD ObjectType);
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VOID INTERNAL_CALL GDIOBJ_LockMultipleObjs(ULONG ulCount, IN HGDIOBJ* ahObj, OUT PGDIOBJ* apObj);
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PVOID INTERNAL_CALL GDI_MapHandleTable(PSECTION_OBJECT SectionObject, PEPROCESS Process);
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#define GDIOBJ_GetObjectType(Handle) \
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GDI_HANDLE_GET_TYPE(Handle)
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#define GDIOBJFLAG_DEFAULT (0x0)
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#define GDIOBJFLAG_IGNOREPID (0x1)
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#define GDIOBJFLAG_IGNORELOCK (0x2)
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BOOL FASTCALL GreDeleteObject(HGDIOBJ hObject);
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BOOL FASTCALL IsObjectDead(HGDIOBJ);
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BOOL FASTCALL IntGdiSetDCOwnerEx( HDC, DWORD, BOOL);
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BOOL FASTCALL IntGdiSetRegionOwner(HRGN,DWORD);
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/*!
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* Release GDI object. Every object locked by GDIOBJ_LockObj() must be unlocked.
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* You should unlock the object
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* as soon as you don't need to have access to it's data.
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* \param Object Object pointer (as returned by GDIOBJ_LockObj).
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*/
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ULONG
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FORCEINLINE
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GDIOBJ_UnlockObjByPtr(POBJ Object)
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{
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INT cLocks = InterlockedDecrement((PLONG)&Object->cExclusiveLock);
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ASSERT(cLocks >= 0);
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return cLocks;
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}
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ULONG
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FORCEINLINE
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GDIOBJ_ShareUnlockObjByPtr(POBJ Object)
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{
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HGDIOBJ hobj = Object->hHmgr;
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USHORT flags = Object->BaseFlags;
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INT cLocks = InterlockedDecrement((PLONG)&Object->ulShareCount);
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ASSERT(cLocks >= 0);
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if ((flags & BASEFLAG_READY_TO_DIE) && (cLocks == 0))
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{
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GDIOBJ_SetOwnership(hobj, PsGetCurrentProcess());
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GDIOBJ_FreeObjByHandle(hobj, GDI_OBJECT_TYPE_DONTCARE);
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}
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return cLocks;
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}
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#ifdef GDI_DEBUG
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ULONG FASTCALL GDIOBJ_IncrementShareCount(POBJ Object);
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#else
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ULONG
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FORCEINLINE
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GDIOBJ_IncrementShareCount(POBJ Object)
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{
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INT cLocks = InterlockedIncrement((PLONG)&Object->ulShareCount);
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ASSERT(cLocks >= 1);
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return cLocks;
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}
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#endif
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INT FASTCALL GreGetObjectOwner(HGDIOBJ, GDIOBJTYPE);
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#define GDIOBJ_GetKernelObj(Handle) \
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((PGDI_TABLE_ENTRY)&GdiHandleTable->Entries[GDI_HANDLE_GET_INDEX(Handle)])->KernelData
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