1 /* This testcase is part of GDB, the GNU debugger.
3 Copyright 2004, 2007 Free Software Foundation, Inc.
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 3 of the License, or
8 (at your option) any later version.
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.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 static volatile int done
;
33 struct itimerval itime
;
34 struct sigaction action
;
36 /* The enum is so that GDB can easily see these macro values. */
38 itimer_real
= ITIMER_REAL
,
39 itimer_virtual
= ITIMER_VIRTUAL
40 } itimer
= ITIMER_VIRTUAL
;
45 /* Set up the signal handler. */
46 memset (&action
, 0, sizeof (action
));
47 action
.sa_handler
= handler
;
48 sigaction (SIGVTALRM
, &action
, NULL
);
49 sigaction (SIGALRM
, &action
, NULL
);
51 /* The values needed for the itimer. This needs to be at least long
52 enough for the setitimer() call to return. */
53 memset (&itime
, 0, sizeof (itime
));
54 itime
.it_value
.tv_usec
= 250 * 1000;
56 /* Loop for ever, constantly taking an interrupt. */
59 /* Set up a one-off timer. A timer, rather than SIGSEGV, is
60 used as after a timer handler finishes the interrupted code
62 setitimer (itimer
, &itime
, NULL
);
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