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Diffstat (limited to 'util/concurrency/synchronization.cpp')
-rw-r--r-- | util/concurrency/synchronization.cpp | 56 |
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 |