From c2d6447df9969866e68a7087d8a2be83f23529fe Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Mon, 22 Jul 2013 10:01:37 +0200
Subject: posix: Protect ualarm()

Use thread dispatch disable/enable to ensure thread level mutual
exlusion.
---
 cpukit/posix/src/ualarm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cpukit/posix/src/ualarm.c b/cpukit/posix/src/ualarm.c
index c893800d09..e94eb12492 100644
--- a/cpukit/posix/src/ualarm.c
+++ b/cpukit/posix/src/ualarm.c
@@ -69,6 +69,8 @@ useconds_t ualarm(
 
   the_timer = &_POSIX_signals_Ualarm_timer;
 
+  _Thread_Disable_dispatch();
+
   state = _Watchdog_Remove( the_timer );
   if ( (state == WATCHDOG_ACTIVE) || (state == WATCHDOG_REMOVE_IT) ) {
     /*
@@ -103,5 +105,7 @@ useconds_t ualarm(
     _Watchdog_Insert_ticks( the_timer, _Timespec_To_ticks( &tp ) );
   }
 
+  _Thread_Enable_dispatch();
+
   return remaining;
 }
-- 
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