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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef SPRINGFUTEX_H
#define SPRINGFUTEX_H
#include <cinttypes>
#include <atomic>
#include "System/Misc/SpringTime.h"
class spring_futex
{
private:
typedef std::uint32_t native_type;
public:
typedef native_type* native_handle_type;
spring_futex() noexcept;
~spring_futex();
spring_futex(const spring_futex&) = delete;
spring_futex& operator=(const spring_futex&) = delete;
void lock();
bool try_lock() noexcept;
void unlock();
native_handle_type native_handle() { return &mtx; }
protected:
native_type mtx;
};
/*FIXME
class recursive_futex
{
private:
typedef std::uint32_t native_type;
public:
typedef native_type* native_handle_type;
recursive_futex() noexcept;
~recursive_futex();
recursive_futex(const recursive_futex&) = delete;
recursive_futex& operator=(const recursive_futex&) = delete;
void lock();
bool try_lock() noexcept;
void unlock();
native_handle_type native_handle() { return &mtx; }
protected:
native_type mtx;
};
*/
class linux_signal {
public:
linux_signal() noexcept;
~linux_signal();
linux_signal(const linux_signal&) = delete;
linux_signal& operator=(const linux_signal&) = delete;
void wait();
void wait_for(spring_time t);
void notify_all(const int min_sleepers = 1);
protected:
std::atomic_int sleepers;
std::atomic_int gen;
std::uint32_t mtx;
};
#endif // SPRINGFUTEX_H
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