69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2004 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/time.h>
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static volatile int done;
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static void
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handler (int sig)
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{
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done = 1;
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} /* handler */
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struct itimerval itime;
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struct sigaction action;
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/* The enum is so that GDB can easily see these macro values. */
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enum {
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itimer_real = ITIMER_REAL,
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itimer_virtual = ITIMER_VIRTUAL
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} itimer = ITIMER_VIRTUAL;
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main ()
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{
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/* Set up the signal handler. */
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memset (&action, 0, sizeof (action));
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action.sa_handler = handler;
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sigaction (SIGVTALRM, &action, NULL);
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sigaction (SIGALRM, &action, NULL);
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/* The values needed for the itimer. This needs to be at least long
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enough for the setitimer() call to return. */
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memset (&itime, 0, sizeof (itime));
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itime.it_value.tv_usec = 250 * 1000;
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/* Loop for ever, constantly taking an interrupt. */
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while (1)
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{
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/* Set up a one-off timer. A timer, rather than SIGSEGV, is
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used as after a timer handler finishes the interrupted code
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can safely resume. */
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setitimer (itimer, &itime, NULL);
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/* Wait. */
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while (!done);
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done = 0;
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}
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}
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