/* Test pthread_kill.c. Copyright (C) 2000-2023 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #define _GNU_SOURCE #include #include #include #include #include #include #include pthread_t testthread; int i; void * test (void *arg) { error_t err; printf ("test: %d\n", pthread_self ()); err = pthread_kill (pthread_self (), SIGINFO); if (err) error (1, err, "pthread_kill"); /* To avoid using condition variables in a signal handler. */ while (i == 0) sched_yield (); return 0; } static void handler (int sig) { assert (pthread_equal (pthread_self (), testthread)); printf ("handler: %d\n", pthread_self ()); i = 1; } int main (int argc, char **argv) { error_t err; struct sigaction sa; void *ret; printf ("main: %d\n", pthread_self ()); sa.sa_handler = handler; sa.sa_mask = 0; sa.sa_flags = 0; err = sigaction (SIGINFO, &sa, 0); if (err) error (1, err, "sigaction"); err = pthread_create (&testthread, 0, test, 0); if (err) error (1, err, "pthread_create"); err = pthread_join (testthread, &ret); if (err) error (1, err, "pthread_join"); assert (ret == 0); return 0; }