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/* Copyright 2015 Google Inc. All Rights Reserved.
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.
==============================================================================*/
#ifndef TENSORFLOW_PLATFORM_DEFAULT_MUTEX_H_
#define TENSORFLOW_PLATFORM_DEFAULT_MUTEX_H_
#include <chrono>
#include <condition_variable>
#include <mutex>
namespace tensorflow {
enum LinkerInitialized { LINKER_INITIALIZED };
// A class that wraps around the std::mutex implementation, only adding an
// additional LinkerInitialized constructor interface.
class mutex : public std::mutex {
public:
mutex() {}
// The default implementation of std::mutex is safe to use after the linker
// initializations
explicit mutex(LinkerInitialized x) {}
};
using std::condition_variable;
typedef std::unique_lock<std::mutex> mutex_lock;
inline ConditionResult WaitForMilliseconds(mutex_lock* mu,
condition_variable* cv, int64 ms) {
std::cv_status s = cv->wait_for(*mu, std::chrono::milliseconds(ms));
return (s == std::cv_status::timeout) ? kCond_Timeout : kCond_MaybeNotified;
}
} // namespace tensorflow
#endif // TENSORFLOW_PLATFORM_DEFAULT_MUTEX_H_
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