/*  Copyright (C) 2015  Povilas Kanapickas <povilas@radix.lt>

    This file is part of cppreference-doc

    This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
    Unported License. To view a copy of this license, visit
    http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative
    Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.

    Permission is granted to copy, distribute and/or modify this document
    under the terms of the GNU Free Documentation License, Version 1.3 or
    any later version published by the Free Software Foundation; with no
    Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
*/

#ifndef CPPREFERENCE_MUTEX_H
#define CPPREFERENCE_MUTEX_H

#if CPPREFERENCE_STDVER>= 2011

#include <chrono>

namespace std {

struct defer_lock_t { };
struct try_to_lock_t { };
struct adopt_lock_t { };

constexpr std::defer_lock_t defer_lock;
constexpr std::try_to_lock_t try_to_lock;
constexpr std::adopt_lock_t adopt_lock;

class mutex {
public:
    typedef void* native_handle_type; // actually impl-defined

    constexpr mutex();
    mutex(const mutex&) = delete;
    mutex& operator=(const mutex&) = delete;

    ~mutex();

    void lock();
    bool try_lock();
    void unlock();
    native_handle_type native_handle();
};

class recursive_mutex {
public:
    typedef void* native_handle_type; // actually impl-defined

    recursive_mutex();
    recursive_mutex(const recursive_mutex&) = delete;
    recursive_mutex& operator=(const recursive_mutex&) = delete;

    ~recursive_mutex();

    void lock();
    bool try_lock();
    void unlock();
    native_handle_type native_handle();
};

class timed_mutex {
public:
    typedef void* native_handle_type; // actually impl-defined

    timed_mutex();
    timed_mutex(const timed_mutex&) = delete;
    timed_mutex& operator=(const timed_mutex&) = delete;

    ~timed_mutex();

    void lock();
    bool try_lock();

    template<class Rep, class Period>
    bool try_lock_for(const std::chrono::duration<Rep, Period>& timeout_duration);

    template<class Clock, class Duration>
    bool try_lock_until(const std::chrono::time_point<Clock, Duration>& timeout_time);

    void unlock();
    native_handle_type native_handle();
};

class recursive_timed_mutex {
public:
    typedef void* native_handle_type; // actually impl-defined

    recursive_timed_mutex();
    recursive_timed_mutex(const recursive_timed_mutex&) = delete;
    recursive_timed_mutex& operator=(const recursive_timed_mutex&) = delete;

    ~recursive_timed_mutex();

    void lock();
    bool try_lock();

    template<class Rep, class Period>
    bool try_lock_for(const std::chrono::duration<Rep, Period>& timeout_duration);

    template<class Clock, class Duration>
    bool try_lock_until(const std::chrono::time_point<Clock, Duration>& timeout_time);

    void unlock();
    native_handle_type native_handle();
};


template<class Mutex>
class lock_guard {
public:
    typedef Mutex mutex_type;

    explicit lock_guard(mutex_type& m);
    lock_guard(mutex_type& m, std::adopt_lock_t t);
    lock_guard(const lock_guard&) = delete;
    lock_guard& operator=(const lock_guard&) = delete;
    ~lock_guard();
};

template<class Mutex>
class unique_lock {
public:
    typedef Mutex mutex_type;

    unique_lock();
    unique_lock(unique_lock&& other);
    explicit unique_lock(mutex_type& m);
    unique_lock(mutex_type& m, std::defer_lock_t t);
    unique_lock(mutex_type& m, std::try_to_lock_t t);
    unique_lock(mutex_type& m, std::adopt_lock_t t);

    template<class Rep, class Period>
    unique_lock(mutex_type& m,
                const std::chrono::duration<Rep, Period>& timeout_duration);

    template<class Clock, class Duration>
    unique_lock(mutex_type& m,
                const std::chrono::time_point<Clock, Duration>& timeout_time);

    ~unique_lock();
    unique_lock& operator=(unique_lock&& other);

    void lock();
    bool try_lock();
    template<class Rep, class Period>
    bool try_lock_for(const std::chrono::duration<Rep, Period>& timeout_duration);
    template<class Clock, class Duration>
    bool try_lock_until(const std::chrono::time_point<Clock, Duration>& timeout_time);
    void unlock();

    void swap(unique_lock<Mutex>& other);

    mutex_type* release();
    mutex_type* mutex() const;
    bool owns_lock() const;
    explicit operator bool() const;
};

template<class Mutex>
void swap(unique_lock<Mutex>& lhs,
          unique_lock<Mutex>& rhs);

class once_flag {
public:
    constexpr once_flag();
};

template<class Lockable1, class Lockable2, class... LockableN>
int try_lock(Lockable1& lock1, Lockable2& lock2, LockableN& ... lockn);

template<class Lockable1, class Lockable2, class... LockableN>
void lock(Lockable1& lock1, Lockable2& lock2, LockableN& ... lockn);

template<class Callable, class... Args>
void call_once(std::once_flag& flag, Callable&& f, Args&& ... args);

} // namespace std

#endif // CPPREFERENCE_STDVER>= 2011

#endif // CPPREFERENCE_MUTEX_H