70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// Created by raver on 8/29/2018.
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//
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#include <helpers/SimpleReadWriteLock.h>
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namespace nd4j {
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SimpleReadWriteLock::SimpleReadWriteLock(const SimpleReadWriteLock& other) {
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_read_locks.store(other._read_locks.load());
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_write_locks.store(other._write_locks.load());
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}
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SimpleReadWriteLock::SimpleReadWriteLock(){
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_read_locks.store(0);
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_write_locks.store(0);
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}
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void SimpleReadWriteLock::lockRead() {
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_mutex.lock();
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_read_locks++;
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while(_write_locks.load() > 0) {
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// just loop
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}
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_mutex.unlock();
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}
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void SimpleReadWriteLock::unlockRead() {
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_read_locks--;
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}
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// write lock
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void SimpleReadWriteLock::lockWrite() {
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_mutex.lock();
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_write_locks++;
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while (_read_locks.load() > 0) {
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// just loop
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}
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_mutex.unlock();
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}
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void SimpleReadWriteLock::unlockWrite() {
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_write_locks--;
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}
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SimpleReadWriteLock& SimpleReadWriteLock::operator= ( const SimpleReadWriteLock &other) {
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if (this == &other) return *this;
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this->_write_locks.store(other._write_locks.load());
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this->_read_locks.store(other._read_locks.load());
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return *this;
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}
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} |