//
|
// impl/system_context.ipp
|
// ~~~~~~~~~~~~~~~~~~~~~~~
|
//
|
// Copyright (c) 2003-2020 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 BOOST_ASIO_IMPL_SYSTEM_CONTEXT_IPP
|
#define BOOST_ASIO_IMPL_SYSTEM_CONTEXT_IPP
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
# pragma once
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
#include <boost/asio/detail/config.hpp>
|
#include <boost/asio/system_context.hpp>
|
|
#include <boost/asio/detail/push_options.hpp>
|
|
namespace boost {
|
namespace asio {
|
|
struct system_context::thread_function
|
{
|
detail::scheduler* scheduler_;
|
|
void operator()()
|
{
|
#if !defined(BOOST_ASIO_NO_EXCEPTIONS)
|
try
|
{
|
#endif// !defined(BOOST_ASIO_NO_EXCEPTIONS)
|
boost::system::error_code ec;
|
scheduler_->run(ec);
|
#if !defined(BOOST_ASIO_NO_EXCEPTIONS)
|
}
|
catch (...)
|
{
|
std::terminate();
|
}
|
#endif// !defined(BOOST_ASIO_NO_EXCEPTIONS)
|
}
|
};
|
|
system_context::system_context()
|
: scheduler_(add_scheduler(new detail::scheduler(*this, 0, false)))
|
{
|
scheduler_.work_started();
|
|
thread_function f = { &scheduler_ };
|
num_threads_ = detail::thread::hardware_concurrency() * 2;
|
num_threads_ = num_threads_ ? num_threads_ : 2;
|
threads_.create_threads(f, num_threads_);
|
}
|
|
system_context::~system_context()
|
{
|
scheduler_.work_finished();
|
scheduler_.stop();
|
threads_.join();
|
}
|
|
void system_context::stop()
|
{
|
scheduler_.stop();
|
}
|
|
bool system_context::stopped() const BOOST_ASIO_NOEXCEPT
|
{
|
return scheduler_.stopped();
|
}
|
|
void system_context::join()
|
{
|
scheduler_.work_finished();
|
threads_.join();
|
}
|
|
detail::scheduler& system_context::add_scheduler(detail::scheduler* s)
|
{
|
detail::scoped_ptr<detail::scheduler> scoped_impl(s);
|
boost::asio::add_service<detail::scheduler>(*this, scoped_impl.get());
|
return *scoped_impl.release();
|
}
|
|
} // namespace asio
|
} // namespace boost
|
|
#include <boost/asio/detail/pop_options.hpp>
|
|
#endif // BOOST_ASIO_IMPL_SYSTEM_CONTEXT_IPP
|
