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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FLUTTER_FML_SYNCHRONIZATION_SEMAPHORE_H_
#define FLUTTER_FML_SYNCHRONIZATION_SEMAPHORE_H_
#include <memory>
#include "flutter/fml/compiler_specific.h"
#include "flutter/fml/macros.h"
namespace fml {
class PlatformSemaphore;
class Semaphore {
public:
explicit Semaphore(uint32_t count);
~Semaphore();
bool IsValid() const;
[[nodiscard]] bool TryWait();
void Signal();
private:
std::unique_ptr<PlatformSemaphore> _impl;
FML_DISALLOW_COPY_AND_ASSIGN(Semaphore);
};
} // namespace fml
#endif // FLUTTER_FML_SYNCHRONIZATION_SEMAPHORE_H_