1 files changed, 58 insertions, 0 deletions
diff --git a/cpukit/score/include/rtems/score/threadsync.h b/cpukit/score/include/rtems/score/threadsync.h
new file mode 100644
index 0000000000..9b5e3dee96
--- /dev/null
+++ b/cpukit/score/include/rtems/score/threadsync.h
@@ -0,0 +1,58 @@
+/**
+ *  @file  rtems/score/threadsync.h
+ *
+ *  This include file contains all constants and structures associated
+ *  with synchronizing a thread blocking operation with potential
+ *  actions in an ISR.
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-2008.
+ *  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.
+ *
+ *  $Id$
+ */
+
+#ifndef _RTEMS_SCORE_THREAD_SYNC_H
+#define _RTEMS_SCORE_THREAD_SYNC_H
+
+/**
+ *  @defgroup ScoreThreadSync Thread Blocking Operation Synchronization Handler
+ *
+ *  This handler encapsulates functionality related to the management of
+ *  synchronization critical sections during blocking operations.
+ */
+/**@{*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ *  The following enumerated types indicate what happened while the thread
+ *  blocking was in the synchronization window.
+ */
+typedef enum {
+  THREAD_BLOCKING_OPERATION_SYNCHRONIZED,
+  THREAD_BLOCKING_OPERATION_NOTHING_HAPPENED,
+  THREAD_BLOCKING_OPERATION_TIMEOUT,
+  THREAD_BLOCKING_OPERATION_SATISFIED
+}  Thread_blocking_operation_States;
+
+/*
+ *  Operations require a thread pointer so they are prototyped
+ *  in thread.h
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+/**@}*/
+
+#endif
+/* end of include file */