From a2ebdce0c7f7c2b6fe6089080caaf0cc17d5db89 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Mon, 5 Jan 2009 11:47:59 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@580
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 src/include/ch.h  | 10 +------
 src/include/sys.h | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 82 insertions(+), 9 deletions(-)
 create mode 100644 src/include/sys.h

(limited to 'src/include')

diff --git a/src/include/ch.h b/src/include/ch.h
index 0c3eb2a64..82348a044 100644
--- a/src/include/ch.h
+++ b/src/include/ch.h
@@ -54,6 +54,7 @@
 #include <chtypes.h>
 #include "lists.h"
 #include <chcore.h>
+#include "sys.h"
 #include "vt.h"
 #include "scheduler.h"
 #include "semaphores.h"
@@ -79,15 +80,6 @@
 #define TRUE        (!FALSE)
 #endif
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-  void chSysInit(void);
-  void chSysTimerHandlerI(void);
-#ifdef __cplusplus
-}
-#endif
-
 #endif /* _CH_H_ */
 
 /** @} */
diff --git a/src/include/sys.h b/src/include/sys.h
new file mode 100644
index 000000000..8765c8d49
--- /dev/null
+++ b/src/include/sys.h
@@ -0,0 +1,81 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @addtogroup Core
+ * @{
+ */
+
+#ifndef _SYS_H_
+#define _SYS_H_
+
+#if defined(CH_USE_REENTRANT_LOCKS) || defined(_DOXYGEN_)
+/**
+ * Enters the ChibiOS/RT system mutual exclusion zone.
+ * @note The use of system mutual exclusion zone is not recommended in
+ *       the user code, it is a better idea to use the semaphores or mutexes
+ *       instead.
+ * @note The code of this API is always inlined regardless the
+ *       @p CH_OPTIMIZE_SPEED setting. This function is meant to be used in
+ *       places where the performance is always preferred.
+ * @see CH_USE_NESTED_LOCKS
+ */
+#define chSysLockInline() {                                             \
+  if (currp->p_locks == 0) {                                            \
+    currp->p_locks++;                                                   \
+    sys_disable();                                                      \
+  }                                                                     \
+}
+
+/**
+ * Leaves the ChibiOS/RT system mutual exclusion zone.
+ * @note The use of system mutual exclusion zone is not recommended in
+ *       the user code, it is a better idea to use the semaphores or mutexes
+ *       instead.
+ * @note The code of this API is always inlined regardless the
+ *       @p CH_OPTIMIZE_SPEED setting. This function is meant to be used in
+ *       places where the performance is always preferred.
+ * @see CH_USE_NESTED_LOCKS
+ */
+#define chSysUnlockInline() {                                           \
+  if (--currp->p_locks == 0)                                            \
+    sys_enable();                                                       \
+}
+#else /* defined(CH_USE_REENTRANT_LOCKS) || defined(_DOXYGEN_) */
+#define chSysLockInline() sys_disable()
+#define chSysUnlockInline() sys_enable()
+#endif /* !defined(CH_USE_REENTRANT_LOCKS) && !defined(_DOXYGEN_) */
+
+#if defined(CH_OPTIMIZE_SPEED)
+#define chSysLock() chSysLockInline()
+#define chSysUnlock chSysUnlockInline()
+#endif /* defined(CH_OPTIMIZE_SPEED) */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void chSysInit(void);
+  void chSysTimerHandlerI(void);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_H_ */
+
+/** @} */
-- 
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