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construct/include/ircd/js/timer.h
2018-02-05 21:24:34 -08:00

54 lines
1.5 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_JS_TIMER_H
namespace ircd {
namespace js {
struct timer
{
using steady_clock = std::chrono::steady_clock;
using time_point = steady_clock::time_point;
using callback = std::function<void () noexcept>;
private:
struct state
{
uint32_t sem;
bool running;
};
std::mutex mutex;
std::condition_variable cond;
bool finished;
callback timeout;
time_point started;
std::atomic<microseconds> limit;
std::atomic<struct state> state;
void handle(std::unique_lock<std::mutex> &lock);
void worker();
std::thread thread; //TODO: single extern thread plz
public:
void set(const microseconds &limit); // Set the time limit (only when not started)
void set(const callback &timeout); // Set the callback (only when not started)
bool cancel(); // Cancel (stop) the timer
time_point start(); // Start the timer
timer(const callback &timeout);
~timer() noexcept;
};
} // namespace js
} // namespace timer