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
|
// SignalHandler.hh for Fluxbox Window Manager
// Copyright (c) 2002 Henrik Kinnunen (fluxgen@linuxmail.org)
//
// 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.
// $Id: SignalHandler.hh,v 1.1 2002/08/13 23:57:04 fluxgen Exp $
#ifndef FBTK_SIGNALHANDLER_HH
#define FBTK_SIGNALHANDLER_HH
#include <signal.h>
namespace FbTk {
/**
Handles system signals, singleton.
*/
class SignalHandler {
public:
/**
Inherit this class to handle signals.
*/
class EventHandler {
public:
virtual void handleSignal(int signum) = 0;
};
/// get singleton object
static SignalHandler *instance();
/**
Register an event handler
@return true on success else false
@param signum signal number
@param eh event handler
@param oldhandler_ret return handler to old sighandler
*/
bool registerHandler(int signum, EventHandler *eh, EventHandler **oldhandler_ret = 0);
/**
removes the signum handler
@param signum signal number
*/
void removeHandler(int signum);
private:
SignalHandler();
static void handleSignal(int signum);
static EventHandler *s_signal_handler[NSIG]; ///< NSIG defined in signal.h
};
}; // end namespace FbTk
#endif // FBTK_SIGNALHANDLER_HH
|
