system_context.ipp
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//
// 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 ASIO_IMPL_SYSTEM_CONTEXT_IPP
#define ASIO_IMPL_SYSTEM_CONTEXT_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/system_context.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
struct system_context::thread_function
{
detail::scheduler* scheduler_;
void operator()()
{
#if !defined(ASIO_NO_EXCEPTIONS)
try
{
#endif// !defined(ASIO_NO_EXCEPTIONS)
asio::error_code ec;
scheduler_->run(ec);
#if !defined(ASIO_NO_EXCEPTIONS)
}
catch (...)
{
std::terminate();
}
#endif// !defined(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 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);
asio::add_service<detail::scheduler>(*this, scoped_impl.get());
return *scoped_impl.release();
}
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_IMPL_SYSTEM_CONTEXT_IPP