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implement DxEngLockShareSem

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implement DxEngUnlockShareSem

svn path=/trunk/; revision=31554
This commit is contained in:
Magnus Olsen 2008-01-02 08:47:46 +00:00
parent e71f4394b7
commit 57cfafda1d
2 changed files with 59 additions and 21 deletions
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6
reactos/include/reactos/drivers/directx/dxeng.h
View file

@ -78,13 +78,15 @@ BOOL DxEngUnlockDC(PDC pDC);
/* Notes : Set Gamma ramp */ /* Notes : Set Gamma ramp */
BOOL DxEngSetDeviceGammaRamp(HDEV hPDev, PGAMMARAMP Ramp, BOOL Unuse); BOOL DxEngSetDeviceGammaRamp(HDEV hPDev, PGAMMARAMP Ramp, BOOL Unuse);
BOOLEAN DxEngLockShareSem();
BOOLEAN DxEngUnlockShareSem();
/* prototypes are not done yet, I need gather all my notes /* prototypes are not done yet, I need gather all my notes
* to make them correct * to make them correct
*/ */
DWORD DxEngCreateMemoryDC(DWORD x1); DWORD DxEngCreateMemoryDC(DWORD x1);
DWORD DxEngScreenAccessCheck(); DWORD DxEngScreenAccessCheck();
DWORD DxEngLockShareSem();
DWORD DxEngUnlockShareSem();
DWORD DxEngLockHdev(DWORD x1); DWORD DxEngLockHdev(DWORD x1);
DWORD DxEngUnlockHdev(DWORD x1); DWORD DxEngUnlockHdev(DWORD x1);
DWORD DxEngReferenceHdev(DWORD x1); DWORD DxEngReferenceHdev(DWORD x1);

60
reactos/subsystems/win32/win32k/ntddraw/dxeng.c
View file

@ -10,6 +10,7 @@
#include <w32k.h> #include <w32k.h>
#include <debug.h> #include <debug.h>
ERESOURCE ghsemShareDevLock;
@ -214,22 +215,57 @@ DWORD DxEngScreenAccessCheck()
return FALSE; return FALSE;
} }
/************************************************************************/ /*++
/* DxEngLockShareSem */ * @name DxEngLockShareSem
/************************************************************************/ * @implemented
DWORD DxEngLockShareSem() *
* The function DxEngLockShareSem doing share lock of ghsemShareDevLock
*
* @return
* This function returns TRUE for susssess, or FALSE for fail, FALSE can only
* mean it being already lock.
*
* @remarks.
* it being use in diffent ntuser* functions and ntgdi*
* ReactOS specify it is not been inuse at moment
*SystemResourcesList
*--*/
BOOLEAN
DxEngLockShareSem()
{ {
UNIMPLEMENTED; BOOLEAN retVal = 0;
return FALSE;
if (ExIsResourceAcquiredExclusiveLite(&ghsemShareDevLock) == FALSE)
{
KeEnterCriticalRegion();
retVal = ExAcquireResourceExclusiveLite(&ghsemShareDevLock, TRUE);
}
return retVal;
} }
/************************************************************************/ /*++
/* DxEngUnlockShareSem */ * @name DxEngUnlockShareSem
/************************************************************************/ * @implemented
DWORD DxEngUnlockShareSem() *
* The function DxEngUnlockShareSem doing share unlock of ghsemShareDevLock
*
* @return
* This function returns TRUE no matter what
*
* @remarks.
* ReactOS specify it is not been inuse at moment
*
*--*/
BOOLEAN
DxEngUnlockShareSem()
{ {
UNIMPLEMENTED; if (ExIsResourceAcquiredExclusiveLite(&ghsemShareDevLock) == TRUE)
return FALSE; {
ExReleaseResourceLite(&ghsemShareDevLock);
KeLeaveCriticalRegion();
}
return TRUE;
} }
/************************************************************************/ /************************************************************************/