From d7c388321ad2f250cb35f01dc4c8dda7489c3416 Mon Sep 17 00:00:00 2001
From: Jennifer Averett <Jennifer.Averett@OARcorp.com>
Date: Thu, 21 Apr 2011 19:05:15 +0000
Subject: 2011-04-21	Jennifer Averett <Jennifer.Averett@OARcorp.com

	PR 1777/cpukit
	* libcsupport/src/malloc_deferred.c, libcsupport/src/realloc.c,
	score/Makefile.am, score/cpu/lm32/irq.c, score/cpu/nios2/irq.c,
	score/include/rtems/score/coremutex.h,
	score/include/rtems/score/thread.h,
	score/inline/rtems/score/thread.inl, score/src/heapfree.c,
	score/src/pheapwalk.c, score/src/smp.c, score/src/threaddispatch.c:
	Consolidated access to _Thread_Dispatch_disable_level.
	* score/src/threaddisabledispatch.c, score/src/threadenabledispatch.c:
	New files.
---
 cpukit/score/src/threaddisabledispatch.c | 54 ++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 cpukit/score/src/threaddisabledispatch.c

(limited to 'cpukit/score/src/threaddisabledispatch.c')

diff --git a/cpukit/score/src/threaddisabledispatch.c b/cpukit/score/src/threaddisabledispatch.c
new file mode 100644
index 0000000000..ea2b6fd73b
--- /dev/null
+++ b/cpukit/score/src/threaddisabledispatch.c
@@ -0,0 +1,54 @@
+/*
+ *  _Thread_Disable_dispatch
+ *
+ *
+ *  COPYRIGHT (c) 1989-2011.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/system.h>
+#include <rtems/score/thread.h>
+
+#if defined ( __THREAD_DO_NOT_INLINE_DISABLE_DISPATCH__ )
+void _Thread_Disable_dispatch( void )
+{
+  /*
+   *  This check is very brutal to system performance but is very helpful
+   *  at finding blown stack problems.  If you have a stack problem and
+   *  need help finding it, then uncomment this code.  Every system
+   *  call will check the stack and since mutexes are used frequently
+   *  in most systems, you might get lucky.
+   */
+  #if defined(RTEMS_HEAVY_STACK_DEBUG)
+    if (_System_state_Is_up(_System_state_Get()) && (_ISR_Nest_level == 0)) {
+      if ( rtems_stack_checker_is_blown() ) {
+	printk( "Stack blown!!\n" );
+	rtems_fatal_error_occurred( 99 );
+      }
+    }
+  #endif
+
+  _Thread_Dispatch_increment_disable_level();
+  RTEMS_COMPILER_MEMORY_BARRIER();
+
+  /*
+   * This check is even more brutal than the other one.  This enables
+   * malloc heap integrity checking upon entry to every system call.
+   */
+  #if defined(RTEMS_HEAVY_MALLOC_DEBUG)
+    if ( _Thread_Dispatch_get_disable_level() == 1 ) {
+      _Heap_Walk( RTEMS_Malloc_Heap,99, false );
+    }
+  #endif
+}
+#endif
-- 
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