157 lines
4.5 KiB
C++
157 lines
4.5 KiB
C++
/*
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* Copyright (c) 2008-2011 Juli Mallett. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/errno.h>
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#include <errno.h>
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#include <poll.h>
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#include <unistd.h>
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#include <event/event_system.h>
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#include <event/io_service.h>
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////////////////////////////////////////////////////////////////////////////////
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// //
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// File: event_poll_poll.cc //
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// Description: IO event handling using standard poll functions //
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// Project: WANProxy XTech //
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// Adapted by: Andreu Vidal Bramfeld-Software //
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// Last modified: 2015-04-01 //
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// //
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////////////////////////////////////////////////////////////////////////////////
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void IoService::open_resources ()
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{
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}
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void IoService::close_resources ()
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{
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}
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void IoService::set_fd (int fd, int rd, int wr, IoNode* node)
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{
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}
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void IoService::poll (int ms)
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{
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struct pollfd fds[fd_map_.size () + 1];
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int i, j, f;
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int cnt;
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fds[0].fd = rfd_;
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fds[0].events = POLLIN;
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fds[0].revents = 0;
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j = 1;
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std::map<int, IoNode>::iterator it;
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for (it = fd_map_.begin (); it != fd_map_.end (); ++it)
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{
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if ((f = (it->second.reading ? POLLIN : 0) | (it->second.writing ? POLLOUT : 0)))
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{
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fds[j].fd = it->first;
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fds[j].events = f;
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fds[j].revents = 0;
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++j;
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}
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}
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cnt = ::poll (fds, j, ms);
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if (cnt < 0 && errno != EINTR)
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CRITICAL(log_) << "Could not poll.";
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for (i = 0; i < j; ++i)
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{
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if (fds[i].revents == 0)
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continue;
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if (cnt-- == 0)
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break;
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int sck = fds[i].fd;
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int flg = fds[i].revents;
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it = fd_map_.find (sck);
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IoNode* node = (it != fd_map_.end () ? &it->second : 0);
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EventAction* act;
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Event ok;
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if ((flg & POLLIN))
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{
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if (node && (act = node->read_action))
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{
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Event& ev = (act->callback_ ? act->callback_->param () : ok);
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if ((act->mode_ == StreamModeAccept && (ev.type_ = Event::Done)) || read_channel (sck, ev, 1))
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{
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schedule (act);
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node->reading = false;
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}
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}
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else if (node)
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read_channel (sck, ok, 0);
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}
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if ((flg & POLLOUT))
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{
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if (node && (act = node->write_action))
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{
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Event& ev = (act->callback_ ? act->callback_->param () : ok);
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if ((act->mode_ == StreamModeConnect && (ev.type_ = Event::Done)) ||
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(act->mode_ == StreamModeWrite && write_channel (sck, ev)) ||
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(act->mode_ == StreamModeEnd && close_channel (sck, ev)))
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{
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schedule (act);
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node->writing = false;
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}
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}
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}
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if (! (flg & (POLLIN | POLLOUT)))
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{
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if ((flg & (POLLERR | POLLNVAL)))
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{
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if (node && (act = node->read_action))
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{
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if (act->callback_)
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act->callback_->param ().type_ = Event::Error;
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schedule (act);
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node->reading = false;
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}
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if (node && (act = node->write_action))
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{
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if (act->callback_)
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act->callback_->param ().type_ = Event::Error;
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schedule (act);
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node->writing = false;
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}
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}
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else if ((flg & POLLHUP))
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{
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if (node && (act = node->read_action))
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{
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if (act->callback_)
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act->callback_->param ().type_ = Event::EOS;
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schedule (act);
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node->reading = false;
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}
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}
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}
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}
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}
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