Kernel/x86 - Clean up some of the task switching code (possibly a little broken)

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

diff --git a/KernelLand/Kernel/messages.c b/KernelLand/Kernel/messages.c
index c991978..b9d7a6f 100644 (file)
--- a/KernelLand/Kernel/messages.c
+++ b/KernelLand/Kernel/messages.c
@@ -88,10 +88,11 @@ int Proc_GetMessage(Uint *Source, Uint BufSize, void *Buffer)
        void    *tmp;
        tThread *cur = Proc_GetCurThread();
 
-       ENTER("pSource pBuffer", Source, Buffer);
+       ENTER("pSource xBufSize pBuffer", Source, BufSize, Buffer);
        
        // Check if queue has any items
        if(!cur->Messages) {
+               LOG("empty queue");
                LEAVE('i', 0);
                return 0;
        }
@@ -137,10 +138,13 @@ int Proc_GetMessage(Uint *Source, Uint BufSize, void *Buffer)
        // Remove from list
        tmp = cur->Messages;
        cur->Messages = cur->Messages->Next;
+       // - Removed last message? Clear the end-of-list pointer
        if(cur->Messages == NULL)       cur->LastMessage = NULL;
+       //  > Otherwise, re-mark the IPCMSG event flag
+       else    cur->EventState |= THREAD_EVENT_IPCMSG;
        
        SHORTREL( &cur->IsLocked );
-       
+
        free(tmp);      // Free outside of lock
 
        LEAVE('i', ret);