util/system/mutex.h


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#pragma once

#include "guard.h" 
#include "defaults.h" 
 
#include <util/generic/ptr.h>
#include <util/generic/noncopyable.h>

class TFakeMutex: public TNonCopyable { 
public: 
    inline void Acquire() noexcept {
    } 

    inline bool TryAcquire() noexcept {
        return true; 
    } 

    inline void Release() noexcept {
    } 

    inline void lock() noexcept {
        Acquire();
    }

    inline bool try_lock() noexcept {
        return TryAcquire();
    }

    inline void unlock() noexcept {
        Release();
    }

    ~TFakeMutex() = default;
}; 

class TMutex {
public: 
    TMutex();
    TMutex(TMutex&&);
    ~TMutex();
 
    void Acquire() noexcept;
    bool TryAcquire() noexcept;
    void Release() noexcept;
 
    inline void lock() noexcept {
        Acquire();
    }

    inline bool try_lock() noexcept {
        return TryAcquire();
    }

    inline void unlock() noexcept {
        Release();
    }

    //return opaque pointer to real handler 
    void* Handle() const noexcept;
 
private: 
    class TImpl; 
    THolder<TImpl> Impl_; 
};