Semaphore.h

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// Copyright 2024 libsese
//
// 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.
 
 
#pragma once
 
#include <sese/Config.h>
 
#include <chrono>
 
namespace sese::system {
 
class Semaphore final {
public:
    using Ptr = std::unique_ptr<Semaphore>;
 
    static Ptr create(std::string name, uint32_t initial_count = 1);
 
    ~Semaphore();
 
    bool lock() const;
 
    bool unlock() const;
 
    bool tryLock(std::chrono::milliseconds ms) const;
 
private:
 
    class Impl;
    std::unique_ptr<Impl> impl;
 
    explicit Semaphore(std::unique_ptr<Impl> impl);
};
 
}