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<?php
/**
* Copyright 2017 Google 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.
*/
namespace Google\Cloud\Core\Lock;
/**
* Contract for a basic locking mechanism.
*/
interface LockInterface
{
/**
* Acquires a lock.
*
* @param array $options [optional] {
* Configuration options.
*
* @type bool $blocking Whether the process should block while waiting
* to acquire the lock. **Defaults to** true.
* }
* @return bool
* @throws \RuntimeException If the lock fails to be acquired.
*/
public function acquire(array $options = []);
/**
* Releases the lock.
*
* @throws \RuntimeException
*/
public function release();
/**
* Execute a callable within a lock.
*
* @param callable $func The callable to execute.
* @param array $options [optional] {
* Configuration options.
*
* @type bool $blocking Whether the process should block while waiting
* to acquire the lock. **Defaults to** true.
* }
* @return mixed
*/
public function synchronize(callable $func, array $options = []);
}