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
|
/* This testcase is part of GDB, the GNU debugger.
Copyright 2004-2015 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <sys/time.h>
static volatile int done;
#ifdef SA_SIGINFO
static void /* HANDLER */
handler (int sig, siginfo_t *info, void *context)
{
done = 1;
} /* handler */
#else
static void
handler (int sig)
{
done = 1;
} /* handler */
#endif
int
main ()
{
/* Set up the signal handler. */
{
struct sigaction action;
memset (&action, 0, sizeof (action));
#ifdef SA_SIGINFO
action.sa_sigaction = handler;
action.sa_flags |= SA_SIGINFO;
#else
action.sa_handler = handler;
#endif
sigaction (SIGVTALRM, &action, NULL);
}
/* Set up a one-off timer. A timer, rather than SIGSEGV, is used as
after a timer handler finishes the interrupted code can safely
resume. */
{
struct itimerval itime;
memset (&itime, 0, sizeof (itime));
itime.it_value.tv_usec = 250 * 1000;
setitimer (ITIMER_VIRTUAL, &itime, NULL);
}
/* Wait. */
while (!done);
return 0;
} /* main */
|
