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/* Copyright (C) 2002-2025 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <sys/time.h>
#include <stdint.h>
#include <config.h>
#include <support/check.h>
#include <support/timespec.h>
#include <support/xthread.h>
#ifdef ENABLE_PP
#include "tst-tpp.h"
#endif
#ifndef TYPE
# define TYPE PTHREAD_MUTEX_NORMAL
#endif
/* A bogus clock value that tells run_test to use
pthread_mutex_timedlock rather than pthread_mutex_clocklock. */
#define CLOCK_USE_TIMEDLOCK (-1)
static int
do_test_clock (clockid_t clockid, const char *fnname, int tmo_result)
{
pthread_mutex_t m;
pthread_mutexattr_t a;
const clockid_t clockid_for_get =
(clockid == CLOCK_USE_TIMEDLOCK) ? CLOCK_REALTIME : clockid;
TEST_COMPARE (pthread_mutexattr_init (&a), 0);
TEST_COMPARE (pthread_mutexattr_settype (&a, TYPE), 0);
#if defined ENABLE_PI
TEST_COMPARE (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT), 0);
#elif defined ENABLE_PP
TEST_COMPARE (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_PROTECT), 0);
TEST_COMPARE (pthread_mutexattr_setprioceiling (&a, 6), 0);
#endif
int err = pthread_mutex_init (&m, &a);
if (err != 0)
{
#ifdef ENABLE_PI
if (err == ENOTSUP)
FAIL_UNSUPPORTED ("PI mutexes unsupported");
#endif
FAIL_EXIT1 ("mutex_init failed");
}
TEST_COMPARE (pthread_mutexattr_destroy (&a), 0);
TEST_COMPARE (pthread_mutex_lock (&m), 0);
if (pthread_mutex_trylock (&m) == 0)
FAIL_EXIT1 ("mutex_trylock succeeded");
/* Wait 2 seconds. */
struct timespec ts_timeout = timespec_add (xclock_now (clockid_for_get),
make_timespec (2, 0));
if (clockid == CLOCK_USE_TIMEDLOCK)
TEST_COMPARE (pthread_mutex_timedlock (&m, &ts_timeout), tmo_result);
else
TEST_COMPARE (pthread_mutex_clocklock (&m, clockid, &ts_timeout),
tmo_result);
if (tmo_result == ETIMEDOUT)
TEST_TIMESPEC_BEFORE_NOW (ts_timeout, clockid_for_get);
/* The following makes the ts value invalid. */
ts_timeout.tv_nsec += 1000000000;
if (clockid == CLOCK_USE_TIMEDLOCK)
TEST_COMPARE (pthread_mutex_timedlock (&m, &ts_timeout), EINVAL);
else
TEST_COMPARE (pthread_mutex_clocklock (&m, clockid, &ts_timeout), EINVAL);
TEST_COMPARE (pthread_mutex_unlock (&m), 0);
const struct timespec ts_start = xclock_now (CLOCK_REALTIME);
/* Wait 2 seconds. */
ts_timeout = timespec_add (ts_start, make_timespec (2, 0));
if (clockid == CLOCK_USE_TIMEDLOCK)
TEST_COMPARE (pthread_mutex_timedlock (&m, &ts_timeout), 0);
else
TEST_COMPARE (pthread_mutex_clocklock (&m, clockid, &ts_timeout), 0);
const struct timespec ts_end = xclock_now (clockid_for_get);
/* Check that timedlock didn't delay. We use a limit of 0.1 secs. */
TEST_TIMESPEC_BEFORE (ts_end,
timespec_add (ts_start, make_timespec (0, 100000000)));
TEST_COMPARE (pthread_mutex_unlock (&m), 0);
TEST_COMPARE (pthread_mutex_destroy (&m), 0);
return 0;
}
static int do_test (void)
{
#ifdef ENABLE_PP
init_tpp_test ();
#endif
int monotonic_result =
#ifdef ENABLE_PI
support_mutex_pi_monotonic () ? ETIMEDOUT : EINVAL;
#else
ETIMEDOUT;
#endif
do_test_clock (CLOCK_USE_TIMEDLOCK, "timedlock", ETIMEDOUT);
do_test_clock (CLOCK_REALTIME, "clocklock(realtime)", ETIMEDOUT);
do_test_clock (CLOCK_MONOTONIC, "clocklock(monotonic)", monotonic_result);
return 0;
}
#include <support/test-driver.c>
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