mirror of
https://sourceware.org/git/glibc.git
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433 lines
9.0 KiB
C
433 lines
9.0 KiB
C
/* Copyright (C) 2003-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* This test checks behavior not required by POSIX. */
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#include <errno.h>
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#include <pthread.h>
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#include <stdbool.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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#include <elf/dl-tunables.h>
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static pthread_mutex_t *m;
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static pthread_barrier_t b;
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static pthread_cond_t c;
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static bool done;
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static void
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cl (void *arg)
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{
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if (pthread_mutex_unlock (m) != 0)
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{
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puts ("cl: mutex_unlocked failed");
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exit (1);
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}
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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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if (pthread_mutex_lock (m) != 0)
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{
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puts ("tf: mutex_lock failed");
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return (void *) 1l;
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}
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int e = pthread_barrier_wait (&b);
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if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("barrier_wait failed");
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return (void *) 1l;
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}
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if (arg == NULL)
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do
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if (pthread_cond_wait (&c, m) != 0)
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{
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puts ("tf: cond_wait failed");
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return (void *) 1l;
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}
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while (! done);
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else
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do
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{
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pthread_cleanup_push (cl, NULL);
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if (pthread_cond_wait (&c, m) != 0)
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{
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puts ("tf: cond_wait failed");
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return (void *) 1l;
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}
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pthread_cleanup_pop (0);
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}
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while (! done);
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if (pthread_mutex_unlock (m) != 0)
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{
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puts ("tf: mutex_unlock failed");
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return (void *) 1l;
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}
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return NULL;
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}
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static int
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check_type (const char *mas, pthread_mutexattr_t *ma)
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{
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int e;
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/* Check if a mutex will be elided. Lock elision can only be activated via
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the tunables framework. By default, lock elision is disabled. */
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bool assume_elided_mutex = false;
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int ma_type = PTHREAD_MUTEX_TIMED_NP;
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if (ma != NULL)
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{
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e = pthread_mutexattr_gettype (ma, &ma_type);
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if (e != 0)
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{
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printf ("pthread_mutexattr_gettype failed with %d (%m)\n", e);
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return 1;
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}
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}
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if (ma_type == PTHREAD_MUTEX_TIMED_NP)
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{
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/* This type of mutex can be elided if elision is enabled via the tunables
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framework. Some tests below are failing if the mutex is elided.
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Thus we only run those if we assume that the mutex won't be elided. */
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if (TUNABLE_GET_FULL (glibc, elision, enable, int32_t, NULL) == 1)
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assume_elided_mutex = true;
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}
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e = pthread_mutex_init (m, ma);
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if (e != 0)
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{
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#ifdef ENABLE_PI
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if (e == ENOTSUP)
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{
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puts ("PI mutexes unsupported");
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return 0;
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}
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#endif
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printf ("1st mutex_init failed for %s\n", mas);
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return 1;
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}
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if (pthread_mutex_destroy (m) != 0)
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{
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printf ("immediate mutex_destroy failed for %s\n", mas);
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return 1;
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}
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if (pthread_mutex_init (m, ma) != 0)
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{
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printf ("2nd mutex_init failed for %s\n", mas);
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return 1;
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}
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if (pthread_mutex_lock (m) != 0)
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{
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printf ("1st mutex_lock failed for %s\n", mas);
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return 1;
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}
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/* Elided mutexes don't fail destroy, thus only test this if we don't assume
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elision. */
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if (assume_elided_mutex == false)
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{
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e = pthread_mutex_destroy (m);
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if (e == 0)
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{
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printf ("mutex_destroy of self-locked mutex succeeded for %s\n", mas);
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return 1;
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}
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if (e != EBUSY)
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{
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printf ("\
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mutex_destroy of self-locked mutex did not return EBUSY %s\n",
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mas);
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return 1;
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}
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}
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if (pthread_mutex_unlock (m) != 0)
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{
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printf ("1st mutex_unlock failed for %s\n", mas);
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return 1;
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}
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if (pthread_mutex_trylock (m) != 0)
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{
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printf ("mutex_trylock failed for %s\n", mas);
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return 1;
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}
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/* Elided mutexes don't fail destroy. */
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if (assume_elided_mutex == false)
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{
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e = pthread_mutex_destroy (m);
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if (e == 0)
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{
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printf ("mutex_destroy of self-trylocked mutex succeeded for %s\n",
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mas);
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return 1;
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}
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if (e != EBUSY)
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{
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printf ("\
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mutex_destroy of self-trylocked mutex did not return EBUSY %s\n",
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mas);
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return 1;
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}
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}
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if (pthread_mutex_unlock (m) != 0)
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{
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printf ("2nd mutex_unlock failed for %s\n", mas);
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return 1;
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}
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pthread_t th;
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if (pthread_create (&th, NULL, tf, NULL) != 0)
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{
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puts ("1st create failed");
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return 1;
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}
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done = false;
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e = pthread_barrier_wait (&b);
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if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("1st barrier_wait failed");
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return 1;
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}
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if (pthread_mutex_lock (m) != 0)
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{
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printf ("2nd mutex_lock failed for %s\n", mas);
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return 1;
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}
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if (pthread_mutex_unlock (m) != 0)
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{
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printf ("3rd mutex_unlock failed for %s\n", mas);
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return 1;
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}
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/* Elided mutexes don't fail destroy. */
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if (assume_elided_mutex == false)
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{
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e = pthread_mutex_destroy (m);
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if (e == 0)
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{
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printf ("mutex_destroy of condvar-used mutex succeeded for %s\n",
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mas);
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return 1;
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}
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if (e != EBUSY)
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{
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printf ("\
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mutex_destroy of condvar-used mutex did not return EBUSY for %s\n", mas);
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return 1;
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}
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}
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done = true;
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if (pthread_cond_signal (&c) != 0)
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{
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puts ("cond_signal failed");
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return 1;
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}
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void *r;
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if (pthread_join (th, &r) != 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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if (r != NULL)
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{
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puts ("thread didn't return NULL");
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return 1;
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}
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if (pthread_mutex_destroy (m) != 0)
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{
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printf ("mutex_destroy after condvar-use failed for %s\n", mas);
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return 1;
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}
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if (pthread_mutex_init (m, ma) != 0)
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{
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printf ("3rd mutex_init failed for %s\n", mas);
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return 1;
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}
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if (pthread_create (&th, NULL, tf, (void *) 1) != 0)
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{
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puts ("2nd create failed");
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return 1;
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}
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done = false;
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e = pthread_barrier_wait (&b);
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if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("2nd barrier_wait failed");
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return 1;
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}
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if (pthread_mutex_lock (m) != 0)
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{
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printf ("3rd mutex_lock failed for %s\n", mas);
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return 1;
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}
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if (pthread_mutex_unlock (m) != 0)
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{
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printf ("4th mutex_unlock failed for %s\n", mas);
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return 1;
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}
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/* Elided mutexes don't fail destroy. */
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if (assume_elided_mutex == false)
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{
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e = pthread_mutex_destroy (m);
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if (e == 0)
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{
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printf ("2nd mutex_destroy of condvar-used mutex succeeded for %s\n",
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mas);
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return 1;
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}
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if (e != EBUSY)
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{
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printf ("\
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2nd mutex_destroy of condvar-used mutex did not return EBUSY for %s\n",
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mas);
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return 1;
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}
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}
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if (pthread_cancel (th) != 0)
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{
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puts ("cond_cancel failed");
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return 1;
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}
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if (pthread_join (th, &r) != 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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if (r != PTHREAD_CANCELED)
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{
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puts ("thread not canceled");
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return 1;
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}
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if (pthread_mutex_destroy (m) != 0)
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{
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printf ("mutex_destroy after condvar-canceled failed for %s\n", mas);
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return 1;
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}
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return 0;
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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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pthread_mutex_t mm;
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m = &mm;
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if (pthread_barrier_init (&b, NULL, 2) != 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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if (pthread_cond_init (&c, NULL) != 0)
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{
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puts ("cond_init failed");
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return 1;
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}
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puts ("check normal mutex");
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int res = check_type ("normal", NULL);
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pthread_mutexattr_t ma;
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if (pthread_mutexattr_init (&ma) != 0)
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{
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puts ("1st mutexattr_init failed");
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return 1;
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}
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if (pthread_mutexattr_settype (&ma, PTHREAD_MUTEX_RECURSIVE) != 0)
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{
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puts ("1st mutexattr_settype failed");
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return 1;
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}
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#ifdef ENABLE_PI
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if (pthread_mutexattr_setprotocol (&ma, PTHREAD_PRIO_INHERIT))
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{
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puts ("1st pthread_mutexattr_setprotocol failed");
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return 1;
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}
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#endif
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puts ("check recursive mutex");
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res |= check_type ("recursive", &ma);
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if (pthread_mutexattr_destroy (&ma) != 0)
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{
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puts ("1st mutexattr_destroy failed");
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return 1;
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}
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if (pthread_mutexattr_init (&ma) != 0)
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{
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puts ("2nd mutexattr_init failed");
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return 1;
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}
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if (pthread_mutexattr_settype (&ma, PTHREAD_MUTEX_ERRORCHECK) != 0)
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{
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puts ("2nd mutexattr_settype failed");
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return 1;
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}
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#ifdef ENABLE_PI
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if (pthread_mutexattr_setprotocol (&ma, PTHREAD_PRIO_INHERIT))
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{
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puts ("2nd pthread_mutexattr_setprotocol failed");
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return 1;
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}
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#endif
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puts ("check error-checking mutex");
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res |= check_type ("error-checking", &ma);
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if (pthread_mutexattr_destroy (&ma) != 0)
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{
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puts ("2nd mutexattr_destroy failed");
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return 1;
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}
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return res;
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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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