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cebde437a1
* Revert "Revert "Guard the service protocol's global handlers list with a reader/writer lock (#6888) #6895" (#6899)" This reverts commit b6e93759faa92a96650e326b0e82578a6803c46d and applies fix for tests on Windows. * Reland guard the service protocol's global handlers list with a reader/writer lock. * Remove blank line
51 lines
1.2 KiB
C++
51 lines
1.2 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_FML_SYNCHRONIZATION_SHARED_MUTEX_H_
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#define FLUTTER_FML_SYNCHRONIZATION_SHARED_MUTEX_H_
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namespace fml {
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// Interface for a reader/writer lock.
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class SharedMutex {
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public:
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static SharedMutex* Create();
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virtual ~SharedMutex() = default;
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virtual void Lock() = 0;
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virtual void LockShared() = 0;
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virtual void Unlock() = 0;
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virtual void UnlockShared() = 0;
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};
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// RAII wrapper that does a shared acquire of a SharedMutex.
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class SharedLock {
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public:
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explicit SharedLock(SharedMutex& shared_mutex) : shared_mutex_(shared_mutex) {
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shared_mutex_.LockShared();
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}
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~SharedLock() { shared_mutex_.UnlockShared(); }
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private:
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SharedMutex& shared_mutex_;
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};
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// RAII wrapper that does an exclusive acquire of a SharedMutex.
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class UniqueLock {
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public:
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explicit UniqueLock(SharedMutex& shared_mutex) : shared_mutex_(shared_mutex) {
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shared_mutex_.Lock();
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}
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~UniqueLock() { shared_mutex_.Unlock(); }
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private:
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SharedMutex& shared_mutex_;
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};
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} // namespace fml
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#endif // FLUTTER_FML_SYNCHRONIZATION_SHARED_MUTEX_H_
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