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1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
3 | Copyright 2004 Free Software Foundation, Inc. | |
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 | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include <signal.h> | |
23 | #include <sys/time.h> | |
24 | ||
25 | static volatile int done; | |
26 | ||
27 | #ifdef SA_SIGINFO | |
28 | static void /* HANDLER */ | |
29 | handler (int sig, siginfo_t *info, void *context) | |
30 | { | |
31 | done = 1; | |
32 | } /* handler */ | |
33 | #else | |
34 | static void | |
35 | handler (int sig) | |
36 | { | |
37 | done = 1; | |
38 | } /* handler */ | |
39 | #endif | |
40 | ||
41 | main () | |
42 | { | |
43 | /* Set up the signal handler. */ | |
44 | { | |
45 | struct sigaction action; | |
46 | memset (&action, 0, sizeof (action)); | |
47 | #ifdef SA_SIGINFO | |
48 | action.sa_sigaction = handler; | |
49 | action.sa_flags |= SA_SIGINFO; | |
50 | #else | |
51 | action.sa_handler = handler; | |
52 | #endif | |
53 | sigaction (SIGVTALRM, &action, NULL); | |
54 | } | |
55 | ||
56 | /* Set up a one-off timer. A timer, rather than SIGSEGV, is used as | |
57 | after a timer handler finishes the interrupted code can safely | |
58 | resume. */ | |
59 | { | |
60 | struct itimerval itime; | |
61 | memset (&itime, 0, sizeof (itime)); | |
62 | itime.it_value.tv_usec = 250 * 1000; | |
63 | setitimer (ITIMER_VIRTUAL, &itime, NULL); | |
64 | } | |
65 | /* Wait. */ | |
66 | while (!done); | |
67 | return 0; | |
68 | } /* main */ |