correct bug in release of semaphore

svn path=/trunk/; revision=357

diff --git a/reactos/ntoskrnl/ke/wait.c b/reactos/ntoskrnl/ke/wait.c
index 9573898..31dee72 100644 (file)
--- a/reactos/ntoskrnl/ke/wait.c
+++ b/reactos/ntoskrnl/ke/wait.c
@@ -107,6 +107,8 @@ static BOOLEAN KeDispatcherObjectWakeOne(DISPATCHER_HEADER* hdr)
                               WaitListEntry);
    DPRINT("current_entry %x current %x\n",current_entry,current);
    DPRINT("Waking %x\n",current->Thread);
+   if (hdr->Type == SemaphoreType)
+      hdr->SignalState--;
    PsResumeThread(CONTAINING_RECORD(current->Thread,ETHREAD,Tcb));
    return(TRUE);
 }
@@ -136,12 +138,15 @@ BOOLEAN KeDispatcherObjectWake(DISPATCHER_HEADER* hdr)
        return(Ret);
        
       case SemaphoreType:
-       Ret = KeDispatcherObjectWakeOne(hdr);
-       if (Ret)
-         {
-            hdr->SignalState--;
-         }
-       return(Ret);
+       if(hdr->SignalState>0)
+       {
+          do
+          {
+           Ret = KeDispatcherObjectWakeOne(hdr);
+          } while(hdr->SignalState > 0 &&  Ret) ;
+         return(Ret);
+       }
+       else return FALSE;
        
       case ProcessType:
        return(KeDispatcherObjectWakeAll(hdr));
@@ -190,7 +195,6 @@ NTSTATUS KeWaitForSingleObject(PVOID Object,
           break;
           
         case SemaphoreType:
-          hdr->SignalState--;
           break;
        }
       KeReleaseDispatcherDatabaseLock(FALSE);