| 1 | /* This testcase is part of GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright 2004, 2007 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 3 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, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | */ |
| 19 | |
| 20 | #include <stdio.h> |
| 21 | #include <string.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 */ |