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//
// waitable_timer_service.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_WAITABLE_TIMER_SERVICE_HPP
#define ASIO_WAITABLE_TIMER_SERVICE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
#include <cstddef>
#include "asio/async_result.hpp"
#include "asio/detail/chrono_time_traits.hpp"
#include "asio/detail/deadline_timer_service.hpp"
#include "asio/io_context.hpp"
#include "asio/wait_traits.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
/// Default service implementation for a timer.
template <typename Clock,
typename WaitTraits = asio::wait_traits<Clock> >
class waitable_timer_service
#if defined(GENERATING_DOCUMENTATION)
: public asio::io_context::service
#else
: public asio::detail::service_base<
waitable_timer_service<Clock, WaitTraits> >
#endif
{
public:
#if defined(GENERATING_DOCUMENTATION)
/// The unique service identifier.
static asio::io_context::id id;
#endif
/// The clock type.
typedef Clock clock_type;
/// The duration type of the clock.
typedef typename clock_type::duration duration;
/// The time point type of the clock.
typedef typename clock_type::time_point time_point;
/// The wait traits type.
typedef WaitTraits traits_type;
private:
// The type of the platform-specific implementation.
typedef detail::deadline_timer_service<
detail::chrono_time_traits<Clock, WaitTraits> > service_impl_type;
public:
/// The implementation type of the waitable timer.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined implementation_type;
#else
typedef typename service_impl_type::implementation_type implementation_type;
#endif
/// Construct a new timer service for the specified io_context.
explicit waitable_timer_service(asio::io_context& io_context)
: asio::detail::service_base<
waitable_timer_service<Clock, WaitTraits> >(io_context),
service_impl_(io_context)
{
}
/// Construct a new timer implementation.
void construct(implementation_type& impl)
{
service_impl_.construct(impl);
}
/// Destroy a timer implementation.
void destroy(implementation_type& impl)
{
service_impl_.destroy(impl);
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a new timer implementation.
void move_construct(implementation_type& impl,
implementation_type& other_impl)
{
service_impl_.move_construct(impl, other_impl);
}
/// Move-assign from another timer implementation.
void move_assign(implementation_type& impl,
waitable_timer_service& other_service,
implementation_type& other_impl)
{
service_impl_.move_assign(impl, other_service.service_impl_, other_impl);
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Cancel any asynchronous wait operations associated with the timer.
std::size_t cancel(implementation_type& impl, asio::error_code& ec)
{
return service_impl_.cancel(impl, ec);
}
/// Cancels one asynchronous wait operation associated with the timer.
std::size_t cancel_one(implementation_type& impl,
asio::error_code& ec)
{
return service_impl_.cancel_one(impl, ec);
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use expiry().) Get the expiry time for the timer as an
/// absolute time.
time_point expires_at(const implementation_type& impl) const
{
return service_impl_.expiry(impl);
}
#endif // !defined(ASIO_NO_DEPRECATED)
/// Get the expiry time for the timer as an absolute time.
time_point expiry(const implementation_type& impl) const
{
return service_impl_.expiry(impl);
}
/// Set the expiry time for the timer as an absolute time.
std::size_t expires_at(implementation_type& impl,
const time_point& expiry_time, asio::error_code& ec)
{
return service_impl_.expires_at(impl, expiry_time, ec);
}
/// Set the expiry time for the timer relative to now.
std::size_t expires_after(implementation_type& impl,
const duration& expiry_time, asio::error_code& ec)
{
return service_impl_.expires_after(impl, expiry_time, ec);
}
#if !defined(ASIO_NO_DEPRECATED)
/// (Deprecated: Use expiry().) Get the expiry time for the timer relative to
/// now.
duration expires_from_now(const implementation_type& impl) const
{
typedef detail::chrono_time_traits<Clock, WaitTraits> traits;
return traits::subtract(service_impl_.expiry(impl), traits::now());
}
/// (Deprecated: Use expires_after().) Set the expiry time for the timer
/// relative to now.
std::size_t expires_from_now(implementation_type& impl,
const duration& expiry_time, asio::error_code& ec)
{
return service_impl_.expires_after(impl, expiry_time, ec);
}
#endif // !defined(ASIO_NO_DEPRECATED)
// Perform a blocking wait on the timer.
void wait(implementation_type& impl, asio::error_code& ec)
{
service_impl_.wait(impl, ec);
}
// Start an asynchronous wait on the timer.
template <typename WaitHandler>
ASIO_INITFN_RESULT_TYPE(WaitHandler,
void (asio::error_code))
async_wait(implementation_type& impl,
ASIO_MOVE_ARG(WaitHandler) handler)
{
async_completion<WaitHandler,
void (asio::error_code)> init(handler);
service_impl_.async_wait(impl, init.completion_handler);
return init.result.get();
}
private:
// Destroy all user-defined handler objects owned by the service.
void shutdown()
{
service_impl_.shutdown();
}
// The platform-specific implementation.
service_impl_type service_impl_;
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#endif // ASIO_WAITABLE_TIMER_SERVICE_HPP
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