2003-05-30 08:03:38 +02:00
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/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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2012-02-10 00:18:22 +01:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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2003-05-30 08:03:38 +02:00
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#include <pthread.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define N 2
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static pthread_barrier_t bar;
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static struct
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{
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void *p;
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pthread_t s;
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} ti[N];
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static int sig1;
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static void
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handler (int sig)
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{
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pthread_t self = pthread_self ();
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size_t i;
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for (i = 0; i < N; ++i)
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if (ti[i].s == self)
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{
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if ((uintptr_t) ti[i].p <= (uintptr_t) &self
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&& (uintptr_t) ti[i].p + 2 * MINSIGSTKSZ > (uintptr_t) &self)
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{
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puts ("alt stack not used");
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exit (1);
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}
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printf ("thread %zu used alt stack for signal %d\n", i, sig);
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return;
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}
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puts ("handler: thread not found");
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exit (1);
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}
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static void *
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tf (void *arg)
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{
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size_t nr = (uintptr_t) arg;
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if (nr >= N)
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{
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puts ("wrong nr parameter");
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exit (1);
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}
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sigset_t ss;
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sigemptyset (&ss);
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size_t i;
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for (i = 0; i < N; ++i)
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if (i != nr)
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if (sigaddset (&ss, sig1 + i) != 0)
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{
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puts ("tf: sigaddset failed");
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exit (1);
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}
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if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
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{
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puts ("tf: sigmask failed");
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exit (1);
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}
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void *p = malloc (2 * MINSIGSTKSZ);
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if (p == NULL)
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{
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puts ("tf: malloc failed");
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exit (1);
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}
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stack_t s;
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s.ss_sp = p;
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s.ss_size = 2 * MINSIGSTKSZ;
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s.ss_flags = 0;
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if (sigaltstack (&s, NULL) != 0)
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{
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puts ("tf: sigaltstack failed");
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exit (1);
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}
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ti[nr].p = p;
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ti[nr].s = pthread_self ();
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pthread_barrier_wait (&bar);
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pthread_barrier_wait (&bar);
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return NULL;
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}
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static int
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do_test (void)
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{
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sig1 = SIGRTMIN;
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if (sig1 + N > SIGRTMAX)
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{
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puts ("too few RT signals");
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return 0;
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}
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struct sigaction sa;
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sa.sa_handler = handler;
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sa.sa_flags = 0;
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sigemptyset (&sa.sa_mask);
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if (sigaction (sig1, &sa, NULL) != 0
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|| sigaction (sig1 + 1, &sa, NULL) != 0
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|| sigaction (sig1 + 2, &sa, NULL) != 0)
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{
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puts ("sigaction failed");
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return 1;
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}
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if (pthread_barrier_init (&bar, NULL, 1 + N) != 0)
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{
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puts ("barrier_init failed");
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return 1;
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}
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pthread_t th[N];
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size_t i;
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for (i = 0; i < N; ++i)
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if (pthread_create (&th[i], NULL, tf, (void *) (long int) i) != 0)
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{
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puts ("create failed");
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return 1;
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}
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/* Block the three signals. */
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sigset_t ss;
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sigemptyset (&ss);
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for (i = 0; i <= N; ++i)
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sigaddset (&ss, sig1 + i);
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if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
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{
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puts ("main: sigmask failed");
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return 1;
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}
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pthread_barrier_wait (&bar);
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/* Send some signals. */
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pid_t me = getpid ();
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kill (me, sig1 + N);
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for (i = 0; i < N; ++i)
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kill (me, sig1 + i);
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kill (me, sig1 + N);
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/* Give the signals a chance to be worked on. */
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sleep (1);
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pthread_barrier_wait (&bar);
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for (i = 0; i < N; ++i)
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if (pthread_join (th[i], NULL) != 0)
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{
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puts ("join failed");
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return 1;
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}
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return 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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