X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=doc%2Fexamples%2Furcu-flavors%2Fmb.c;h=e103e4f91f55f1d69078733136366d05145194a7;hp=24daaef75c5735580457476408a1e3424478b3a4;hb=b9050d917ab84db192b5609ba6dd9973a82d215a;hpb=944504819e236e0d1b59599c4dfbde44a7ced226

diff --git a/doc/examples/urcu-flavors/mb.c b/doc/examples/urcu-flavors/mb.c
index 24daaef..e103e4f 100644
--- a/doc/examples/urcu-flavors/mb.c
+++ b/doc/examples/urcu-flavors/mb.c
@@ -22,8 +22,7 @@
 #include <stdint.h>
 #include <inttypes.h>
 
-#define RCU_MB			/* Memory barrier RCU flavor */
-#include <urcu.h>
+#include <urcu/urcu-mb.h>	/* Memory barrier RCU flavor */
 #include <urcu/rculist.h>	/* List example */
 #include <urcu/compiler.h>	/* For CAA_ARRAY_SIZE */
 
@@ -75,7 +74,7 @@ int main(int argc, char **argv)
 	 * Each thread need using RCU read-side need to be explicitly
 	 * registered.
 	 */
-	rcu_register_thread();
+	urcu_mb_register_thread();
 
 	/*
 	 * Adding nodes to the linked-list. Safe against concurrent
@@ -92,7 +91,7 @@ int main(int argc, char **argv)
 	 * with rcu_read_lock() and rcu_read_unlock(). They can be
 	 * nested. Those are no-ops for the QSBR flavor.
 	 */
-	rcu_read_lock();
+	urcu_mb_read_lock();
 
 	/*
 	 * RCU traversal of the linked list.
@@ -100,7 +99,7 @@ int main(int argc, char **argv)
 	cds_list_for_each_entry_rcu(node, &mylist, node) {
 		printf("Value: %" PRIu64 "\n", node->value);
 	}
-	rcu_read_unlock();
+	urcu_mb_read_unlock();
 
 	/*
 	 * Removing nodes from linked list. Safe against concurrent RCU
@@ -108,9 +107,24 @@ int main(int argc, char **argv)
 	 */
 	cds_list_for_each_entry_safe(node, n, &mylist, node) {
 		cds_list_del_rcu(&node->node);
-		call_rcu(&node->rcu_head, rcu_free_node);
+		/*
+		 * call_rcu() will ensure that the handler
+		 * "rcu_free_node" is executed after a grace period.
+		 * call_rcu() can be called from RCU read-side critical
+		 * sections.
+		 */
+		urcu_mb_call_rcu(&node->rcu_head, rcu_free_node);
 	}
 
+	/*
+	 * We can also wait for a quiescent state by calling
+	 * synchronize_rcu() rather than using call_rcu(). It is usually
+	 * a slower approach than call_rcu(), because the latter can
+	 * batch work. Moreover, call_rcu() can be called from a RCU
+	 * read-side critical section, but synchronize_rcu() should not.
+	 */
+	urcu_mb_synchronize_rcu();
+
 	sleep(1);
 
 	/*
@@ -118,9 +132,9 @@ int main(int argc, char **argv)
 	 * before program exits, or in library destructors, is a good
 	 * practice.
 	 */
-	rcu_barrier();
+	urcu_mb_barrier();
 
 end:
-	rcu_unregister_thread();
+	urcu_mb_unregister_thread();
 	return ret;
 }