Kernel - Fixed threads entering EVENTSLEEP with event pending

[tpg/acess2.git] / KernelLand / Kernel / events.c

diff --git a/KernelLand/Kernel/events.c b/KernelLand/Kernel/events.c
index 2b39714..b0225ef 100644 (file)
--- a/KernelLand/Kernel/events.c
+++ b/KernelLand/Kernel/events.c
@@ -83,10 +83,13 @@ Uint32 Threads_WaitEvents(Uint32 EventMask)
        // Check if a wait is needed
        SHORTLOCK( &us->IsLocked );
        LOG("Locked and preparing for wait");
-       Threads_int_Sleep(THREAD_STAT_EVENTSLEEP, NULL, EventMask,
-               &us, NULL, &us->IsLocked);
-       // Woken when lock is acquired
-       SHORTLOCK( &us->IsLocked );
+       if( (us->EventState & EventMask) == 0 )
+       {
+               Threads_int_Sleep(THREAD_STAT_EVENTSLEEP, NULL, EventMask,
+                       &us, NULL, &us->IsLocked);
+               // Woken when lock is acquired
+               SHORTLOCK( &us->IsLocked );
+       }
        
        // Get return value and clear changed event bits
        rv = us->EventState & EventMask;