score: Use self-contained API mutex

Use a self-contained recursive mutex for API_Mutex_Control.  The API
mutexes are protected against asynchronous thread cancellation.

Add dedicated mutexes for libatomic and TOD.

Close #2629.
Close #2630.

1 files changed, 37 insertions, 0 deletions

diff --git a/cpukit/score/src/allocatormutex.c b/cpukit/score/src/allocatormutex.c
new file mode 100644
index 0000000000..7f98a4008f
--- /dev/null
+++ b/cpukit/score/src/allocatormutex.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2017 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/score/apimutex.h>
+
+static API_Mutex_Control _RTEMS_Allocator_Mutex =
+  API_MUTEX_INITIALIZER( "_Allocator" );
+
+void _RTEMS_Lock_allocator( void )
+{
+  _API_Mutex_Lock( &_RTEMS_Allocator_Mutex );
+}
+
+void _RTEMS_Unlock_allocator( void )
+{
+  _API_Mutex_Unlock( &_RTEMS_Allocator_Mutex );
+}
+
+bool _RTEMS_Allocator_is_owner( void )
+{
+  return _API_Mutex_Is_owner( &_RTEMS_Allocator_Mutex );
+}