summaryrefslogtreecommitdiff
path: root/src/event/DeferredMonitor.cxx
blob: 4ffffaa892126d047e620e18f176a4f21dceaea5 (plain)
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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
/*
 * Copyright (C) 2003-2013 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.
 */

#include "config.h"
#include "DeferredMonitor.hxx"
#include "Loop.hxx"

void
DeferredMonitor::Cancel()
{
#ifdef USE_EPOLL
	pending = false;
#else
	const auto id = source_id.exchange(0);
	if (id != 0)
		g_source_remove(id);
#endif
}

void
DeferredMonitor::Schedule()
{
#ifdef USE_EPOLL
	if (!pending.exchange(true))
		fd.Write();
#else
	const unsigned id = loop.AddIdle(Callback, this);
	const auto old_id = source_id.exchange(id);
	if (old_id != 0)
		g_source_remove(old_id);
#endif
}

#ifdef USE_EPOLL

bool
DeferredMonitor::OnSocketReady(unsigned)
{
	fd.Read();

	if (pending.exchange(false))
		RunDeferred();

	return true;
}

#else

void
DeferredMonitor::Run()
{
	const auto id = source_id.exchange(0);
	if (id != 0)
		RunDeferred();
}

gboolean
DeferredMonitor::Callback(gpointer data)
{
	DeferredMonitor &monitor = *(DeferredMonitor *)data;
	monitor.Run();
	return false;
}

#endif