atomic_stop_signal.hpp

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#pragma once
 
#include <atomic>
 
namespace pa {
 
class AtomicStopSignal {
  public:
    AtomicStopSignal()                         = default;
    AtomicStopSignal(const AtomicStopSignal &) : AtomicStopSignal() {}
    AtomicStopSignal &operator=(const AtomicStopSignal &) = delete;
    AtomicStopSignal(AtomicStopSignal &&) : AtomicStopSignal() {}
    AtomicStopSignal &operator=(AtomicStopSignal &&) { return *this; }
 
    void stop() { stop_flag.store(true, std::memory_order_relaxed); }
    bool stop_requested() const {
        return stop_flag.load(std::memory_order_relaxed);
    }
 
  private:
    std::atomic<bool> stop_flag{false};
};
 
} // namespace pa