cavis/libnd4j/include/execution/impl/BlockingQueue.cpp

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/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// @author raver119@gmail.com
//
#include <execution/BlockingQueue.h>
#include <execution/CallableWithArguments.h>
#include <thread>
namespace samediff {
template <typename T>
BlockingQueue<T>::BlockingQueue(int queueSize) {
_size = 0;
_available = true;
}
template <typename T>
T BlockingQueue<T>::poll() {
// locking untill there's something within queue
std::unique_lock<std::mutex> lock(_lock);
_condition.wait(lock, [&]{ return this->_size.load() != 0; });
T t(std::move(_queue.front()));
_queue.pop();
_size--;
return t;
}
template <typename T>
void BlockingQueue<T>::put(const T &t) {
{
// locking before push, unlocking after
std::unique_lock<std::mutex> lock(_lock);
_queue.push(t);
_size++;
}
// notifying condition
_condition.notify_one();
}
template <typename T>
bool BlockingQueue<T>::available() {
return _available.load();
}
template <typename T>
void BlockingQueue<T>::markAvailable() {
_available = true;
}
template <typename T>
void BlockingQueue<T>::markUnavailable() {
_available = false;
}
template class BlockingQueue<CallableWithArguments*>;
}