mirror of
https://github.com/Relintai/rcpp_framework.git
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115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
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// This file is originally from Trantor - Channel.cc
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// Copyright (c) 2016-2021, Tao An. All rights reserved.
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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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//
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// * 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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// * 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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// * Neither the name of Tao An nor the names of other contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "channel.h"
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#include "event_loop.h"
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#ifdef _WIN32
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#include "Wepoll.h"
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#define POLLIN EPOLLIN
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#define POLLPRI EPOLLPRI
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#define POLLOUT EPOLLOUT
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#define POLLHUP EPOLLHUP
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#define POLLNVAL 0
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#define POLLERR EPOLLERR
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#else
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#include <poll.h>
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#endif
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#include <iostream>
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namespace trantor {
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const int Channel::kNoneEvent = 0;
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const int Channel::kReadEvent = POLLIN | POLLPRI;
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const int Channel::kWriteEvent = POLLOUT;
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Channel::Channel(EventLoop *loop, int fd) :
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loop_(loop), fd_(fd), events_(0), revents_(0), index_(-1), tied_(false) {
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}
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void Channel::remove() {
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assert(events_ == kNoneEvent);
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addedToLoop_ = false;
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loop_->removeChannel(this);
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}
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void Channel::update() {
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loop_->updateChannel(this);
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}
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void Channel::handleEvent() {
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// LOG_TRACE<<"revents_="<<revents_;
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if (tied_) {
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std::shared_ptr<void> guard = tie_.lock();
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if (guard) {
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handleEventSafely();
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}
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} else {
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handleEventSafely();
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}
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}
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void Channel::handleEventSafely() {
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if (eventCallback_) {
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eventCallback_();
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return;
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}
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if ((revents_ & POLLHUP) && !(revents_ & POLLIN)) {
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// LOG_TRACE<<"handle close";
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if (closeCallback_)
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closeCallback_();
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}
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if (revents_ & (POLLNVAL | POLLERR)) {
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// LOG_TRACE<<"handle error";
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if (errorCallback_)
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errorCallback_();
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}
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#ifdef __linux__
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if (revents_ & (POLLIN | POLLPRI | POLLRDHUP))
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#else
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if (revents_ & (POLLIN | POLLPRI))
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#endif
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{
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// LOG_TRACE<<"handle read";
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if (readCallback_)
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readCallback_();
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}
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#ifdef _WIN32
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if ((revents_ & POLLOUT) && !(revents_ & POLLHUP))
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#else
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if (revents_ & POLLOUT)
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#endif
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{
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// LOG_TRACE<<"handle write";
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if (writeCallback_)
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writeCallback_();
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}
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}
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} // namespace trantor
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