aboutsummaryrefslogtreecommitdiffstats
path: root/src/event/PollGroupPoll.hxx
blob: 8d73280b4bb68535955556b62a7c89db2bd08376 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/*
 * Copyright (C) 2003-2015 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_EVENT_POLLGROUP_POLL_HXX
#define MPD_EVENT_POLLGROUP_POLL_HXX

#include "check.h"
#include "PollResultGeneric.hxx"

#include <vector>
#include <unordered_map>

#include <stddef.h>
#include <sys/poll.h>

class PollGroupPoll
{
	struct Item
	{
		size_t index;
		void *obj;
	};

	std::vector<pollfd> poll_events;
	std::unordered_map<int, Item> items;

	PollGroupPoll(PollGroupPoll &) = delete;
	PollGroupPoll &operator=(PollGroupPoll &) = delete;
public:
	static constexpr unsigned READ = POLLIN;
	static constexpr unsigned WRITE = POLLOUT;
	static constexpr unsigned ERROR = POLLERR;
	static constexpr unsigned HANGUP = POLLHUP;

	PollGroupPoll();
	~PollGroupPoll();

	void ReadEvents(PollResultGeneric &result, int timeout_ms);
	bool Add(int fd, unsigned events, void *obj);
	bool Modify(int fd, unsigned events, void *obj);
	bool Remove(int fd);
	bool Abandon(int fd) {
		return Remove(fd);
	}
};

#endif