X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;ds=sidebyside;f=urcu.h;h=3c5b178d1a8254adb37331fea6b61698a58c459c;hb=5e7e64b952ac49cf61c4c3bfc02e5938c3691d94;hp=bee7715270794c3e83cede4acb1741a98d361ac6;hpb=41718ff94c4a07cb5f56d68084267798e471d1b1;p=urcu.git

diff --git a/urcu.h b/urcu.h
index bee7715..3c5b178 100644
--- a/urcu.h
+++ b/urcu.h
@@ -1,6 +1,22 @@
 #ifndef _URCU_H
 #define _URCU_H
 
+/*
+ * urcu.h
+ *
+ * Userspace RCU header
+ *
+ * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * Credits for Paul e. McKenney <paulmck@linux.vnet.ibm.com>
+ * for inspiration coming from the Linux kernel RCU and rcu-preempt.
+ *
+ * The barrier, mb, rmb, wmb, atomic_inc, smp_read_barrier_depends, ACCESS_ONCE
+ * and rcu_dereference primitives come from the Linux kernel.
+ *
+ * Distributed under GPLv2
+ */
+
 /* The "volatile" is due to gcc bugs */
 #define barrier() __asm__ __volatile__("": : :"memory")
 
@@ -9,9 +25,6 @@
 #define rmb()   asm volatile("lfence":::"memory")
 #define wmb()   asm volatile("sfence" ::: "memory")
 
-
-
-/* x86 32 */
 static inline void atomic_inc(int *v)
 {
 	asm volatile("lock; incl %0"
@@ -91,12 +104,18 @@ static inline void rcu_read_unlock(int urcu_parity)
 extern void rcu_write_lock(void);
 extern void rcu_write_unlock(void);
 
-extern void *urcu_publish_content(void **ptr, void *new);
+extern void *_urcu_publish_content(void **ptr, void *new);
+
+/*
+ * gcc does not like automatic &struct ... * -> void **.
+ * Remove the warning. (hopefully this is ok)
+ */
+#define urcu_publish_content(ptr, new) _urcu_publish_content((void **)ptr, new)
 
 /*
  * Reader thread registration.
  */
 extern void urcu_register_thread(void);
-extern void urcu_register_thread(void);
+extern void urcu_unregister_thread(void);
 
 #endif /* _URCU_H */