| /******************************************************************************/ |
| /* */ |
| /* Copyright (c) 2009 FUJITSU LIMITED */ |
| /* */ |
| /* 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 2 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, write to the Free Software */ |
| /* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ |
| /* */ |
| /* Author: Miao Xie <miaox@cn.fujitsu.com> */ |
| /* Restructure for LTP: Shi Weihua <shiwh@cn.fujitsu.com> */ |
| /* */ |
| /******************************************************************************/ |
| |
| #include <stdio.h> |
| #include <math.h> |
| #include <err.h> |
| #include <errno.h> |
| #include <signal.h> |
| |
| #define __USE_GNU |
| #include <sched.h> |
| |
| #define UNUSED __attribute__ ((unused)) |
| |
| unsigned long count; |
| volatile int start = 0; |
| volatile double f = 2744545.34456455; |
| |
| void sighandler(UNUSED int signo) |
| { |
| start = !start; |
| } |
| |
| int main(void) |
| { |
| sigset_t sigset; |
| struct sigaction sa; |
| |
| sa.sa_handler = sighandler; |
| if (sigemptyset(&sa.sa_mask) < 0) |
| err(1, "sigemptyset()"); |
| |
| sa.sa_flags = 0; |
| if (sigaction(SIGUSR1, &sa, NULL) < 0) |
| err(1, "sigaction()"); |
| |
| if (sigemptyset(&sigset) < 0) |
| err(1, "sigemptyset()"); |
| |
| sigsuspend(&sigset); |
| if (errno != EINTR) |
| err(1, "sigsuspend()"); |
| |
| while (start) { |
| f = sqrt(f * f); |
| } |
| |
| return 0; |
| } |