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2b5306585d
........ r43377 | chris_kohlhoff | 2008-02-23 09:43:54 +1100 (Sat, 23 Feb 2008) | 2 lines Use the correct vector of timer queues when dispatching timers. ........ r43437 | chris_kohlhoff | 2008-02-29 23:57:57 +1100 (Fri, 29 Feb 2008) | 2 lines Add missing tie(). ........ r43469 | chris_kohlhoff | 2008-03-04 00:21:05 +1100 (Tue, 04 Mar 2008) | 4 lines Disable use of CancelIo by default, due to the possibility of silent failure on some system configurations. Swallow error returned by CancelIoEx if there are no operations to be cancelled. ........ r43470 | chris_kohlhoff | 2008-03-04 00:27:06 +1100 (Tue, 04 Mar 2008) | 2 lines Add missing 'boost_' prefix to helper namespace. ........ r43471 | chris_kohlhoff | 2008-03-04 00:36:35 +1100 (Tue, 04 Mar 2008) | 2 lines Regenerate documentation. ........ r43472 | chris_kohlhoff | 2008-03-04 01:05:35 +1100 (Tue, 04 Mar 2008) | 1 line Update copyright notices. ........ r43473 | chris_kohlhoff | 2008-03-04 01:13:01 +1100 (Tue, 04 Mar 2008) | 2 lines Update copyright notices. ........ r43569 | chris_kohlhoff | 2008-03-13 00:25:49 +1100 (Thu, 13 Mar 2008) | 4 lines Revert to having the windows-bug workaround (short timeout on GetQueuedCompletionStatus) on all threads as there are still scenarios where threads can get stuck indefinitely. ........ [SVN r43571]
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
//
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// io_service_pool.cpp
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// ~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "server.hpp"
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#include <stdexcept>
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#include <boost/thread.hpp>
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#include <boost/bind.hpp>
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#include <boost/shared_ptr.hpp>
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namespace http {
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namespace server2 {
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io_service_pool::io_service_pool(std::size_t pool_size)
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: next_io_service_(0)
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{
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if (pool_size == 0)
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throw std::runtime_error("io_service_pool size is 0");
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// Give all the io_services work to do so that their run() functions will not
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// exit until they are explicitly stopped.
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for (std::size_t i = 0; i < pool_size; ++i)
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{
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io_service_ptr io_service(new boost::asio::io_service);
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work_ptr work(new boost::asio::io_service::work(*io_service));
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io_services_.push_back(io_service);
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work_.push_back(work);
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}
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}
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void io_service_pool::run()
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{
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// Create a pool of threads to run all of the io_services.
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std::vector<boost::shared_ptr<boost::thread> > threads;
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for (std::size_t i = 0; i < io_services_.size(); ++i)
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{
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boost::shared_ptr<boost::thread> thread(new boost::thread(
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boost::bind(&boost::asio::io_service::run, io_services_[i])));
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threads.push_back(thread);
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}
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// Wait for all threads in the pool to exit.
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for (std::size_t i = 0; i < threads.size(); ++i)
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threads[i]->join();
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}
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void io_service_pool::stop()
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{
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// Explicitly stop all io_services.
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for (std::size_t i = 0; i < io_services_.size(); ++i)
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io_services_[i]->stop();
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}
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boost::asio::io_service& io_service_pool::get_io_service()
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{
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// Use a round-robin scheme to choose the next io_service to use.
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boost::asio::io_service& io_service = *io_services_[next_io_service_];
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++next_io_service_;
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if (next_io_service_ == io_services_.size())
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next_io_service_ = 0;
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return io_service;
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}
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} // namespace server2
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} // namespace http
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