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MaskMonitor.hxx
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1 /*
2 * Copyright 2003-2017 The Music Player Daemon Project
3 * http://www.musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef MPD_EVENT_MASK_MONITOR_HXX
21 #define MPD_EVENT_MASK_MONITOR_HXX
22
23 #include "check.h"
24 #include "DeferredMonitor.hxx"
25 #include "util/BindMethod.hxx"
26
27 #include <atomic>
28
35 class MaskMonitor final : DeferredMonitor {
36 typedef BoundMethod<void(unsigned)> Callback;
37 const Callback callback;
38
39 std::atomic_uint pending_mask;
40
41 public:
42 MaskMonitor(EventLoop &_loop, Callback _callback)
43 :DeferredMonitor(_loop), callback(_callback), pending_mask(0) {}
44
45 using DeferredMonitor::GetEventLoop;
46 using DeferredMonitor::Cancel;
47
48 void OrMask(unsigned new_mask);
49
50 protected:
51 /* virtual methode from class DeferredMonitor */
52 void RunDeferred() override;
53 };
54
55 #endif
check.h
DeferredMonitor::GetEventLoop
EventLoop & GetEventLoop()
Definition: DeferredMonitor.hxx:46
EventLoop
An event loop that polls for events on file/socket descriptors.
Definition: Loop.hxx:51
MaskMonitor
Manage a bit mask of events that have occurred.
Definition: MaskMonitor.hxx:35
DeferredMonitor
Defer execution of an event into an EventLoop.
Definition: DeferredMonitor.hxx:32
BoundMethod
This object stores a function pointer wrapping a method, and a reference to an instance of the method...
Definition: BindMethod.hxx:44
MaskMonitor::OrMask
void OrMask(unsigned new_mask)
BindMethod.hxx
MaskMonitor::RunDeferred
void RunDeferred() override
DeferredMonitor::Cancel
void Cancel()
DeferredMonitor.hxx
MaskMonitor::MaskMonitor
MaskMonitor(EventLoop &_loop, Callback _callback)
Definition: MaskMonitor.hxx:42