/* This testcase is part of GDB, the GNU debugger. Copyright 2014-2015 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 . */ #include #include #include #include #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); }