Add library version information

[urcu.git] / urcu-pointer.h

diff --git a/urcu-pointer.h b/urcu-pointer.h
index 748a37a0e7fe3e2f7d493a7b0276602ef1efbc99..7b240a783d3ed45d7af6d4c5ee1ad83781b30762 100644 (file)
--- a/urcu-pointer.h
+++ b/urcu-pointer.h
@@ -6,7 +6,7 @@
  *
  * Userspace RCU header. Operations on pointers.
  *
- * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
  *
  * This library is free software; you can redistribute it and/or
@@ -28,7 +28,11 @@
 
 #include <urcu/compiler.h>
 #include <urcu/arch.h>
-#include <urcu/arch_uatomic.h>
+#include <urcu/uatomic_arch.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
 
 #ifdef _LGPL_SOURCE
 
@@ -58,39 +62,43 @@
 #define rcu_xchg_pointer       _rcu_xchg_pointer
 #define rcu_set_pointer                _rcu_set_pointer
 
-/*
- * type *rcu_publish_content(type **ptr, type *new)
- *
- * Exchanges the pointer and waits for quiescent state. The pointer returned
- * can be freed. You are encouraged to use either
- * - rcu_cmpxchg_pointer
- * - rcu_xchg_pointer
- * - rcu_set_pointer
- * with call_rcu(free, ptr) instead to deal with reclamation more efficiently.
- */
-#define rcu_publish_content    _rcu_publish_content
-
 #else /* !_LGPL_SOURCE */
 
-extern void *rcu_dereference(void *p);
+extern void *rcu_dereference_sym(void *p);
+#define rcu_dereference(p)                                                  \
+       ({                                                                   \
+               typeof(p) _________p1 =                                      \
+                       rcu_dereference_sym((void *)(p));                    \
+               (_________p1);                                               \
+       })
 
 extern void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new);
-#define rcu_cmpxchg_pointer(p, old, _new)              \
-       rcu_cmpxchg_pointer_sym((void **)(p), (old), (_new))
+#define rcu_cmpxchg_pointer(p, old, _new)                                   \
+       ({                                                                   \
+               typeof(*p) _________pold = (old);                            \
+               typeof(*p) _________pnew = (_new);                           \
+               typeof(*p) _________p1 =                                     \
+                       rcu_cmpxchg_pointer_sym((void **)(p), _________pold, \
+                                               _________pnew);              \
+               (_________p1);                                               \
+       })
 
 extern void *rcu_xchg_pointer_sym(void **p, void *v);
-#define rcu_xchg_pointer(p, v)                         \
-       rcu_xchg_pointer_sym((void **)(p), (v))
+#define rcu_xchg_pointer(p, v)                                              \
+       ({                                                                   \
+               typeof(*p) _________pv = (v);                                \
+               typeof(*p) _________p1 =                                     \
+                       rcu_xchg_pointer_sym((void **)(p), _________pv);     \
+               (_________p1);                                               \
+       })
 
 extern void *rcu_set_pointer_sym(void **p, void *v);
-#define rcu_set_pointer(p, v)                          \
-       rcu_set_pointer_sym((void **)(p), (v))
-
-extern void *rcu_publish_content_sym(void **p, void *v);
-#define rcu_publish_content(p, v)                      \
-       rcu_publish_content_sym((void **)(p), (v))
-
-extern void *rcu_assign_pointer_sym(void **p, void *v);
+#define rcu_set_pointer(p, v)                                               \
+       ({                                                                   \
+               typeof(*p) _________pv = (v);                                \
+               typeof(*p) _________p1 =                                     \
+                       rcu_set_pointer_sym((void **)(p), _________pv);      \
+       })
 
 #endif /* !_LGPL_SOURCE */
 
@@ -103,4 +111,8 @@ extern void *rcu_assign_pointer_sym(void **p, void *v);
  */
 #define rcu_assign_pointer(p, v)       rcu_set_pointer((&p), (v))
 
+#ifdef __cplusplus 
+}
+#endif
+
 #endif /* _URCU_POINTER_H */