82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
/*
|
|
* Copyright (C) 2003-2014 The Music Player Daemon Project
|
|
* http://www.musicpd.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#ifndef MPD_EPOLL_FD_HXX
|
|
#define MPD_EPOLL_FD_HXX
|
|
|
|
#include <assert.h>
|
|
#include <sys/epoll.h>
|
|
#include <unistd.h>
|
|
#include <stdint.h>
|
|
|
|
#include "check.h"
|
|
|
|
struct epoll_event;
|
|
|
|
/**
|
|
* A class that wraps Linux epoll.
|
|
*
|
|
* Errors in the constructor are fatal.
|
|
*/
|
|
class EPollFD {
|
|
const int fd;
|
|
|
|
public:
|
|
EPollFD();
|
|
|
|
~EPollFD() {
|
|
assert(fd >= 0);
|
|
|
|
::close(fd);
|
|
}
|
|
|
|
EPollFD(const EPollFD &other) = delete;
|
|
EPollFD &operator=(const EPollFD &other) = delete;
|
|
|
|
int Wait(epoll_event *events, int maxevents, int timeout) {
|
|
return ::epoll_wait(fd, events, maxevents, timeout);
|
|
}
|
|
|
|
bool Control(int op, int _fd, epoll_event *event) {
|
|
return ::epoll_ctl(fd, op, _fd, event) >= 0;
|
|
}
|
|
|
|
bool Add(int _fd, uint32_t events, void *ptr) {
|
|
epoll_event e;
|
|
e.events = events;
|
|
e.data.ptr = ptr;
|
|
|
|
return Control(EPOLL_CTL_ADD, _fd, &e);
|
|
}
|
|
|
|
bool Modify(int _fd, uint32_t events, void *ptr) {
|
|
epoll_event e;
|
|
e.events = events;
|
|
e.data.ptr = ptr;
|
|
|
|
return Control(EPOLL_CTL_MOD, _fd, &e);
|
|
}
|
|
|
|
bool Remove(int _fd) {
|
|
return Control(EPOLL_CTL_DEL, _fd, nullptr);
|
|
}
|
|
};
|
|
|
|
#endif
|