From 1797badafc5050ce2d24d5381ebc07ff4be94f97 Mon Sep 17 00:00:00 2001
From: Oliver Kowalke <oliver.kowalke@gmx.de>
Date: Sat, 19 Sep 2015 17:37:42 +0200
Subject: [PATCH] fix memory ordering for release-op
 (spinlock/mutex/recursive_mutex)

---
 src/detail/spinlock.cpp | 2 +-
 src/mutex.cpp           | 2 +-
 src/recursive_mutex.cpp | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/detail/spinlock.cpp b/src/detail/spinlock.cpp
index 178efbe2..7b94b03b 100644
--- a/src/detail/spinlock.cpp
+++ b/src/detail/spinlock.cpp
@@ -40,7 +40,7 @@ atomic_spinlock::lock() {
 void
 atomic_spinlock::unlock() noexcept {
     BOOST_ASSERT( atomic_spinlock_status::locked == state_);
-    state_ = atomic_spinlock_status::unlocked;
+    state_.store( atomic_spinlock_status::unlocked, std::memory_order_release);
 }
 
 }}}
diff --git a/src/mutex.cpp b/src/mutex.cpp
index 9bba3158..69a23a91 100644
--- a/src/mutex.cpp
+++ b/src/mutex.cpp
@@ -101,7 +101,7 @@ mutex::unlock() {
     }
     lk.unlock();
     owner_ = nullptr;
-	state_ = mutex_status::unlocked;
+	state_.store( mutex_status::unlocked, std::memory_order_release);
 
     if ( nullptr != ctx) {
         context::active()->set_ready( ctx);
diff --git a/src/recursive_mutex.cpp b/src/recursive_mutex.cpp
index ce382864..a2faa09e 100644
--- a/src/recursive_mutex.cpp
+++ b/src/recursive_mutex.cpp
@@ -115,7 +115,7 @@ recursive_mutex::unlock() {
         }
         lk.unlock();
         owner_ = nullptr;
-        state_ = mutex_status::unlocked;
+        state_.store( mutex_status::unlocked, std::memory_order_release);
 
         if ( nullptr != ctx) {
             context::active()->set_ready( ctx);