blob: d963a416ef9bead95f626fac455ae8a595e80471 (
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
|
///////////////////////////////////////////////////////////////////////////////
//
/// \file signals.h
/// \brief Handling signals to abort operation
//
// Copyright (C) 2007-2009 Lasse Collin
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
//
///////////////////////////////////////////////////////////////////////////////
/// If this is true, we will clean up the possibly incomplete output file,
/// return to main() as soon as practical. That is, the code needs to poll
/// this variable in various places.
extern volatile sig_atomic_t user_abort;
/// Initialize the signal handler, which will set user_abort to true when
/// user e.g. presses C-c.
extern void signals_init(void);
#ifndef _WIN32
/// Block the signals which don't have SA_RESTART and which would just set
/// user_abort to true. This is handy when we don't want to handle EINTR
/// and don't want SA_RESTART either.
extern void signals_block(void);
/// Unblock the signals blocked by signals_block().
extern void signals_unblock(void);
/// If user has sent us a signal earlier to terminate the process,
/// re-raise that signal to actually terminate the process.
extern void signals_exit(void);
#else
#define signals_block() do { } while (0)
#define signals_unblock() do { } while (0)
#define signals_exit() do { } while (0)
#endif
|
