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https://github.com/rakshasa/rtorrent.git
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rakshasa
4d313e6353
git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@1301 e378c898-3ddf-0310-93e7-cc216c733640
128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
// rTorrent - BitTorrent client
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// Copyright (C) 2005-2011, Jari Sundell
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations
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// including the two.
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//
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// You must obey the GNU General Public License in all respects for
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// all of the code used other than OpenSSL. If you modify file(s)
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// with this exception, you may extend this exception to your version
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// of the file(s), but you are not obligated to do so. If you do not
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// wish to do so, delete this exception statement from your version.
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// If you delete this exception statement from all source files in the
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// program, then also delete it here.
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//
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// Contact: Jari Sundell <jaris@ifi.uio.no>
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//
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// Skomakerveien 33
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// 3185 Skoppum, NORWAY
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#include "config.h"
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#include <cstring>
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#include <stdexcept>
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#include <unistd.h>
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#include <sys/time.h>
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#include <rak/allocators.h>
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#include <torrent/exceptions.h>
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#include <torrent/poll_select.h>
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#include <torrent/torrent.h>
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#include "poll_manager_select.h"
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#include "thread_base.h"
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namespace core {
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PollManagerSelect::PollManagerSelect(torrent::Poll* p) : PollManager(p) {
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#if defined USE_VARIABLE_FDSET
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m_setSize = (m_poll->open_max() + 7) / 8;
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char* buffer = rak::cacheline_allocator<char>::alloc_size(3 * m_setSize);
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std::memset(buffer, 0, 3 * m_setSize);
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m_readSet = (fd_set*)buffer;
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m_writeSet = (fd_set*)(buffer += m_setSize);
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m_errorSet = (fd_set*)(buffer += m_setSize);
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#else
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#error Only variable fdset supported atm.
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#endif
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}
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PollManagerSelect*
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PollManagerSelect::create(int maxOpenSockets) {
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torrent::PollSelect* p = torrent::PollSelect::create(maxOpenSockets);
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if (p == NULL)
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return NULL;
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return new PollManagerSelect(p);
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}
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PollManagerSelect::~PollManagerSelect() {
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free(m_readSet);
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}
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void
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PollManagerSelect::poll(rak::timer timeout) {
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torrent::perform();
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timeout = std::min(timeout, rak::timer(torrent::next_timeout())) + 1000;
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std::memset(m_readSet, 0, m_setSize);
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std::memset(m_writeSet, 0, m_setSize);
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std::memset(m_errorSet, 0, m_setSize);
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unsigned int maxFd = static_cast<torrent::PollSelect*>(m_poll)->fdset(m_readSet, m_writeSet, m_errorSet);
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timeval t = timeout.tval();
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ThreadBase::entering_main_polling();
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ThreadBase::release_global_lock();
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int status = select(maxFd + 1, m_readSet, m_writeSet, m_errorSet, &t);
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ThreadBase::leaving_main_polling();
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ThreadBase::acquire_global_lock();
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if (status == -1)
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return check_error();
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torrent::perform();
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static_cast<torrent::PollSelect*>(m_poll)->perform(m_readSet, m_writeSet, m_errorSet);
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}
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void
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PollManagerSelect::poll_simple(rak::timer timeout) {
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torrent::PollSelect* currentPoll = static_cast<torrent::PollSelect*>(m_poll);
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timeout = timeout + 1000;
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std::memset(m_readSet, 0, 3 * m_setSize);
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unsigned int maxFd = currentPoll->fdset(m_readSet, m_writeSet, m_errorSet);
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timeval t = timeout.tval();
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if (select(maxFd + 1, m_readSet, m_writeSet, m_errorSet, &t) == -1)
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return check_error();
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currentPoll->perform(m_readSet, m_writeSet, m_errorSet);
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}
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}
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