*
* System definitions.
*
- * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
*
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*/
#include <urcu/compiler.h>
#include <urcu/arch.h>
/*
- * Identify a shared load. A smp_rmc() or smp_mc() should come before the load.
+ * Identify a shared load. A cmm_smp_rmc() or cmm_smp_mc() should come
+ * before the load.
*/
-#define _LOAD_SHARED(p) ACCESS_ONCE(p)
+#define _CMM_LOAD_SHARED(p) CMM_ACCESS_ONCE(p)
/*
* Load a data from shared memory, doing a cache flush if required.
*/
-#define LOAD_SHARED(p) \
+#define CMM_LOAD_SHARED(p) \
({ \
- smp_rmc(); \
- _LOAD_SHARED(p); \
+ cmm_smp_rmc(); \
+ _CMM_LOAD_SHARED(p); \
})
/*
- * Identify a shared store. A smp_wmc() or smp_mc() should follow the store.
+ * Identify a shared store. A cmm_smp_wmc() or cmm_smp_mc() should
+ * follow the store.
*/
-#define _STORE_SHARED(x, v) ({ ACCESS_ONCE(x) = (v); })
+#define _CMM_STORE_SHARED(x, v) ({ CMM_ACCESS_ONCE(x) = (v); })
/*
- * Store v into x, where x is located in shared memory. Performs the required
- * cache flush after writing. Returns v.
+ * Store v into x, where x is located in shared memory. Performs the
+ * required cache flush after writing. Returns v.
*/
-#define STORE_SHARED(x, v) \
- ({ \
- _STORE_SHARED(x, v); \
- smp_wmc(); \
- (v); \
+#define CMM_STORE_SHARED(x, v) \
+ ({ \
+ __typeof__(x) _v = _CMM_STORE_SHARED(x, v); \
+ cmm_smp_wmc(); \
+ _v = _v; /* Work around clang "unused result" */ \
})
#endif /* _URCU_SYSTEM_H */