| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 "Latch.h" |
| |
| namespace pulsar { |
| |
| Latch::Latch(int count) : state_(std::make_shared<InternalState>()) { state_->count = count; } |
| |
| void Latch::countdown() { |
| Lock lock(state_->mutex); |
| |
| state_->count--; |
| |
| if (state_->count == 0) { |
| state_->condition.notify_all(); |
| } |
| } |
| |
| int Latch::getCount() { |
| Lock lock(state_->mutex); |
| |
| return state_->count; |
| } |
| |
| void Latch::wait() { |
| Lock lock(state_->mutex); |
| |
| state_->condition.wait(lock, CountIsZero(state_->count)); |
| } |
| |
| } /* namespace pulsar */ |