Merge commit 'upstream/1.8.0

1 files changed, 56 insertions, 0 deletions

diff --git a/util/concurrency/synchronization.cpp b/util/concurrency/synchronization.cpp
new file mode 100644
index 0000000..12e2894
--- /dev/null
+++ b/util/concurrency/synchronization.cpp
@@ -0,0 +1,56 @@
+// synchronization.cpp
+
+/*    Copyright 2010 10gen Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#include "pch.h"
+#include "synchronization.h"
+
+namespace mongo {
+
+    Notification::Notification() : _mutex ( "Notification" ) , _notified( false ) { }
+
+    Notification::~Notification() { }
+
+    void Notification::waitToBeNotified() {
+        scoped_lock lock( _mutex );
+        while ( ! _notified )
+            _condition.wait( lock.boost() );
+    }
+
+    void Notification::notifyOne() {
+        scoped_lock lock( _mutex );
+        assert( !_notified );
+        _notified = true;
+        _condition.notify_one();
+    }
+
+    NotifyAll::NotifyAll() : _mutex("NotifyAll"), _counter(0) { }
+
+    void NotifyAll::wait() {
+        scoped_lock lock( _mutex );
+        unsigned long long old = _counter;
+        while( old == _counter ) {
+            _condition.wait( lock.boost() );
+        }
+    }
+
+    void NotifyAll::notifyAll() {
+        scoped_lock lock( _mutex );
+        ++_counter;
+        _condition.notify_all();
+    }
+
+} // namespace mongo