117 lines
2.7 KiB
C++
117 lines
2.7 KiB
C++
/*
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* nghttp2 - HTTP/2.0 C Library
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*
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* Copyright (c) 2012 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "EventPoll_epoll.h"
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#include <unistd.h>
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#include <cassert>
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namespace nghttp2 {
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EventPoll::EventPoll(size_t max_events)
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: max_events_(max_events), num_events_(0)
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{
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epfd_ = epoll_create(1);
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assert(epfd_ != -1);
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evlist_ = new epoll_event[max_events_];
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}
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EventPoll::~EventPoll()
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{
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if(epfd_ != -1) {
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close(epfd_);
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}
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delete [] evlist_;
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}
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int EventPoll::poll(int timeout)
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{
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num_events_ = 0;
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int n = epoll_wait(epfd_, evlist_, max_events_, timeout);
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if(n > 0) {
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num_events_ = n;
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}
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return n;
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}
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int EventPoll::get_num_events()
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{
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return num_events_;
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}
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void* EventPoll::get_user_data(size_t p)
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{
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return evlist_[p].data.ptr;
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}
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int EventPoll::get_events(size_t p)
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{
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int events = 0;
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int revents = evlist_[p].events;
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if(revents & EPOLLIN) {
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events |= EP_POLLIN;
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}
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if(revents & EPOLLOUT) {
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events |= EP_POLLOUT;
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}
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if(revents & EPOLLHUP) {
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events |= EP_POLLHUP;
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}
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if(revents & EPOLLERR) {
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events |= EP_POLLERR;
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}
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return events;
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}
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namespace {
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int update_event(int epfd, int op, int fd, int events, void *user_data)
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{
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epoll_event ev;
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ev.events = 0;
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if(events & EP_POLLIN) {
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ev.events |= EPOLLIN;
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}
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if(events & EP_POLLOUT) {
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ev.events |= EPOLLOUT;
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}
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ev.data.ptr = user_data;
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return epoll_ctl(epfd, op, fd, &ev);
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}
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} // namespace
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int EventPoll::ctl_event(int op, int fd, int events, void *user_data)
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{
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if(op == EP_ADD) {
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op = EPOLL_CTL_ADD;
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} else if(op == EP_MOD) {
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op = EPOLL_CTL_MOD;
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} else {
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return -1;
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}
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return update_event(epfd_, op, fd, events, user_data);
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}
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} // namespace nghttp2
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