nghttp2/examples/EventPoll_epoll.h

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/*
* Spdylay - SPDY Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef EVENT_POLL_EPOLL_H
#define EVENT_POLL_EPOLL_H
#include "spdylay_config.h"
#include <cstdlib>
#include <sys/epoll.h>
#include "EventPollEvent.h"
namespace spdylay {
class EventPoll {
public:
EventPoll(size_t max_events);
~EventPoll();
// Returns 0 if this function succeeds, or -1.
// On success
int poll(int timeout);
// Returns number of events detected in previous call of poll().
int get_num_events();
// Returns events of p-eth event.
int get_events(size_t p);
// Returns user data of p-th event.
void* get_user_data(size_t p);
// Adds/Modifies event to watch.
int ctl_event(int op, int fd, int events, void *user_data);
private:
int epfd_;
size_t max_events_;
epoll_event *evlist_;
size_t num_events_;
};
} // namespace spdylay
#endif // EVENT_POLL_EPOLL_H