X-Git-Url: http://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu-bp.c;h=f3249b43b313decebc29e193b5c82ebf1114a735;hp=39a6cd0e9ab3ffe06f1d96eaeb889f77f692ac89;hb=53dae82521cfd35f6df58b85bd7f39f2aa20a231;hpb=dc745ef621c02934b89f5c1764fc0c51c51ccb1e

diff --git a/urcu-bp.c b/urcu-bp.c
index 39a6cd0..f3249b4 100644
--- a/urcu-bp.c
+++ b/urcu-bp.c
@@ -24,6 +24,7 @@
  */
 
 #define _GNU_SOURCE
+#define _LGPL_SOURCE
 #include <stdio.h>
 #include <pthread.h>
 #include <signal.h>
@@ -35,11 +36,15 @@
 #include <unistd.h>
 #include <sys/mman.h>
 
+#include "urcu/wfqueue.h"
 #include "urcu/map/urcu-bp.h"
-
 #include "urcu/static/urcu-bp.h"
+#include "urcu-pointer.h"
+
 /* Do not #define _LGPL_SOURCE to ensure we can emit the wrapper symbols */
+#undef _LGPL_SOURCE
 #include "urcu-bp.h"
+#define _LGPL_SOURCE
 
 #ifndef MAP_ANONYMOUS
 #define MAP_ANONYMOUS MAP_ANON
@@ -78,6 +83,11 @@ void *mremap(void *old_address, size_t old_size, size_t new_size, int flags)
 #define RCU_SLEEP_DELAY		1000
 #define ARENA_INIT_ALLOC	16
 
+/*
+ * Active attempts to check for reader Q.S. before calling sleep().
+ */
+#define RCU_QS_ACTIVE_ATTEMPTS 100
+
 void __attribute__((destructor)) rcu_bp_exit(void);
 
 static pthread_mutex_t rcu_gp_lock = PTHREAD_MUTEX_INITIALIZER;
@@ -295,7 +305,7 @@ static void add_thread(void)
 	if (registry_arena.len
 	    < registry_arena.used + sizeof(struct rcu_reader))
 		resize_arena(&registry_arena,
-		max(registry_arena.len << 1, ARENA_INIT_ALLOC));
+		caa_max(registry_arena.len << 1, ARENA_INIT_ALLOC));
 	/*
 	 * Find a free spot.
 	 */
@@ -364,9 +374,10 @@ end:
 	assert(!ret);
 }
 
-void rcu_bp_exit()
+void rcu_bp_exit(void)
 {
-	munmap(registry_arena.p, registry_arena.len);
+	if (registry_arena.p)
+		munmap(registry_arena.p, registry_arena.len);
 }
 
 /*
@@ -410,5 +421,28 @@ void rcu_bp_after_fork_child(void)
 	assert(!ret);
 }
 
+void *rcu_dereference_sym_bp(void *p)
+{
+	return _rcu_dereference(p);
+}
+
+void *rcu_set_pointer_sym_bp(void **p, void *v)
+{
+	cmm_wmb();
+	return uatomic_set(p, v);
+}
+
+void *rcu_xchg_pointer_sym_bp(void **p, void *v)
+{
+	cmm_wmb();
+	return uatomic_xchg(p, v);
+}
+
+void *rcu_cmpxchg_pointer_sym_bp(void **p, void *old, void *_new)
+{
+	cmm_wmb();
+	return uatomic_cmpxchg(p, old, _new);
+}
+
 #include "urcu-call-rcu-impl.h"
 #include "urcu-defer-impl.h"