From f9df01f16be898af3565cbc673e035b779ff2f7f Mon Sep 17 00:00:00 2001
From: James Tabor <james.tabor@reactos.org>
Date: Mon, 5 May 2008 01:34:17 +0000
Subject: [PATCH] Implement IntGdiReferencePdev and part of
 IntGdiUnreferencePdev.

svn path=/trunk/; revision=33288
---
 reactos/subsystems/win32/win32k/objects/dc.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/reactos/subsystems/win32/win32k/objects/dc.c b/reactos/subsystems/win32/win32k/objects/dc.c
index d99b9080656..b0bec444313 100644
--- a/reactos/subsystems/win32/win32k/objects/dc.c
+++ b/reactos/subsystems/win32/win32k/objects/dc.c
@@ -2699,16 +2699,27 @@ IntEnumHDev(VOID)
    return &PrimarySurface;
 }
 
+HSEMAPHORE hsemDriverMgmt = NULL; // Hax, should be in dllmain.c and global.
+
 VOID FASTCALL
 IntGdiReferencePdev(PGDIDEVICE pPDev)
 {
+  if(!hsemDriverMgmt) hsemDriverMgmt = EngCreateSemaphore(); // Hax, should be in dllmain.c
+  EngAcquireSemaphore(hsemDriverMgmt);
   pPDev->cPdevRefs++;
+  EngReleaseSemaphore(hsemDriverMgmt);
 }
 
 VOID FASTCALL
 IntGdiUnreferencePdev(PGDIDEVICE pPDev, DWORD CleanUpType) 
 {
+  EngAcquireSemaphore(hsemDriverMgmt);
   pPDev->cPdevRefs--;
+  if (!pPDev->cPdevRefs)
+  {
+     // Handle the destruction of pPDev or GDIDEVICE or PDEVOBJ or PDEV etc.
+  }
+  EngReleaseSemaphore(hsemDriverMgmt);
 }