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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [testsuite/] [gdb.base/] [sigstep.c] - Rev 841
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/* This testcase is part of GDB, the GNU debugger. Copyright 2004, 2007, 2008 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> #include <errno.h> static volatile int done; static void handler (int sig) { done = 1; } /* handler */ struct itimerval itime; struct sigaction action; /* The enum is so that GDB can easily see these macro values. */ enum { itimer_real = ITIMER_REAL, itimer_virtual = ITIMER_VIRTUAL } itimer = ITIMER_VIRTUAL; int main () { int res; /* Set up the signal handler. */ memset (&action, 0, sizeof (action)); action.sa_handler = handler; sigaction (SIGVTALRM, &action, NULL); sigaction (SIGALRM, &action, NULL); /* The values needed for the itimer. This needs to be at least long enough for the setitimer() call to return. */ memset (&itime, 0, sizeof (itime)); itime.it_value.tv_usec = 250 * 1000; /* Loop for ever, constantly taking an interrupt. */ while (1) { /* 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. */ res = setitimer (itimer, &itime, NULL); if (res == -1) { printf ("First call to setitimer failed, errno = %d\r\n",errno); itimer = ITIMER_REAL; res = setitimer (itimer, &itime, NULL); if (res == -1) { printf ("Second call to setitimer failed, errno = %d\r\n",errno); return 1; } } /* Wait. */ while (!done); done = 0; } return 0; }
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