| /* This testcase is part of GDB, the GNU debugger. |
| |
| Copyright 2014-2016 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 <pthread.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <signal.h> |
| |
| #define NUM_THREADS 10 |
| const int num_threads = NUM_THREADS; |
| /* Allow for as much timeout as DejaGnu wants, plus a bit of |
| slack. */ |
| |
| volatile unsigned int timeout = TIMEOUT; |
| #define SECONDS (timeout + 20) |
| |
| pthread_t child_thread[NUM_THREADS]; |
| volatile pthread_t signal_thread; |
| volatile int got_sig; |
| |
| void |
| handler (int signo) |
| { |
| got_sig = 1; |
| } |
| |
| void |
| loop_broke (void) |
| { |
| } |
| |
| #define INF_LOOP \ |
| do \ |
| { \ |
| while (!got_sig) \ |
| ; \ |
| } \ |
| while (0) |
| |
| void * |
| child_function (void *arg) |
| { |
| pthread_t self = pthread_self (); |
| |
| while (1) |
| { |
| /* Reset the timer before going to INF_LOOP. */ |
| alarm (SECONDS); |
| INF_LOOP; /* set thread breakpoint here */ |
| loop_broke (); |
| } |
| } |
| |
| int |
| main (void) |
| { |
| int res; |
| int i; |
| |
| /* Call these early so that we're sure their PLTs are quickly |
| resolved now, instead of in the busy threads. */ |
| pthread_kill (pthread_self (), 0); |
| alarm (0); |
| |
| signal (SIGUSR1, handler); |
| |
| for (i = 0; i < NUM_THREADS; i++) |
| { |
| res = pthread_create (&child_thread[i], NULL, child_function, NULL); |
| } |
| |
| while (1) |
| { |
| pthread_kill (signal_thread, SIGUSR1); /* set kill breakpoint here */ |
| /* Reset the timer before going to INF_LOOP. */ |
| alarm (SECONDS); |
| INF_LOOP; |
| loop_broke (); |
| } |
| |
| exit(EXIT_SUCCESS); |
| } |