From d1e2239ff0202c628ab9662403fd88ff4e4760fe Mon Sep 17 00:00:00 2001
From: Ulrich Weigand <weigand@informatik.uni-erlangen.de>
Date: Thu, 15 Apr 1999 15:30:33 +0000
Subject: [PATCH] Bugfix: Always release the Win16Lock in TASK_Reschedule.

---
 loader/task.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/loader/task.c b/loader/task.c
index 5624bd143d3..75dd7bf9f8d 100644
--- a/loader/task.c
+++ b/loader/task.c
@@ -780,8 +780,13 @@ BOOL TASK_Reschedule(void)
 
     if (hTask == hCurrentTask) 
     {
-       TRACE(task, "returning to the current task(%04x)\n", hTask );
-       return FALSE;  /* Nothing to do */
+        /* Allow Win32 threads to thunk down even while a Win16 task is
+           in a tight PeekMessage() or Yield() loop ... */
+        SYSLEVEL_ReleaseWin16Lock();
+        SYSLEVEL_RestoreWin16Lock();
+
+        TRACE(task, "returning to the current task(%04x)\n", hTask );
+        return FALSE;  /* Nothing to do */
     }
     pNewTask = (TDB *)GlobalLock16( hTask );
     TRACE(task, "Switching to task %04x (%.8s)\n",