From fee76896120acbf7b5fa41fc99fca05c54b1f8da Mon Sep 17 00:00:00 2001
From: Brian Norris <banorris@uci.edu>
Date: Thu, 26 Apr 2012 16:16:23 -0700
Subject: [PATCH] libatomic: add atomic_init()

---
 libatomic.cc | 5 +++++
 libatomic.h  | 2 ++
 userprog.c   | 2 ++
 3 files changed, 9 insertions(+)

diff --git a/libatomic.cc b/libatomic.cc
index 6734148..f552d93 100644
--- a/libatomic.cc
+++ b/libatomic.cc
@@ -15,3 +15,8 @@ int atomic_load_explicit(struct atomic_object *obj, memory_order order)
 	model->switch_to_master(new ModelAction(ATOMIC_READ, order, obj, VALUE_NONE));
 	return obj->value;
 }
+
+void atomic_init(struct atomic_object *obj, int value)
+{
+	obj->value = value;
+}
diff --git a/libatomic.h b/libatomic.h
index 684b213..1806f21 100644
--- a/libatomic.h
+++ b/libatomic.h
@@ -24,6 +24,8 @@ extern "C" {
 	int atomic_load_explicit(struct atomic_object *obj, memory_order order);
 #define atomic_load(A) atomic_load_explicit((A), memory_order_seq_cst)
 
+	void atomic_init(struct atomic_object *obj, int value);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/userprog.c b/userprog.c
index bab9f98..2847c1a 100644
--- a/userprog.c
+++ b/userprog.c
@@ -28,6 +28,8 @@ void user_main()
 	thrd_t t1, t2;
 	atomic_int obj;
 
+	atomic_init(&obj, 0);
+
 	printf("Creating 2 threads\n");
 	thrd_create(&t1, (thrd_start_t)&a, &obj);
 	thrd_create(&t2, (thrd_start_t)&a, &obj);
-- 
2.34.1