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39 lines
790 B
39 lines
790 B
/*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <mutex>
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struct UnknownMutex {
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UnknownMutex() {}
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void lock() {}
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void unlock() {}
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UnknownMutex(const UnknownMutex&) = delete;
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UnknownMutex& operator=(const UnknownMutex&) = delete;
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};
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class Recursive {
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public:
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Recursive() {}
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void multi_ok() {
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std::lock_guard<std::recursive_mutex> l(recursive_mutex_);
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{ std::lock_guard<std::recursive_mutex> l(recursive_mutex_); }
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}
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void unknown_ok() {
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std::lock_guard<UnknownMutex> l(umutex_);
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{ std::lock_guard<UnknownMutex> l(umutex_); }
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}
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private:
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std::recursive_mutex recursive_mutex_;
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UnknownMutex umutex_;
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};
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