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178 lines
5.2 KiB
C
178 lines
5.2 KiB
C
/* Copyright (C) 2002-2024 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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#include <errno.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/time.h>
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#include <support/check.h>
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#include <support/test-driver.h>
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#include <support/timespec.h>
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#include <support/xthread.h>
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#include <support/xtime.h>
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/* A bogus clock value that tells run_test to use pthread_rwlock_timedrdlock
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and pthread_rwlock_timedwrlock rather than pthread_rwlock_clockrdlock and
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pthread_rwlock_clockwrlock. */
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#define CLOCK_USE_TIMEDLOCK (-1)
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static int kind[] =
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{
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PTHREAD_RWLOCK_PREFER_READER_NP,
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PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
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PTHREAD_RWLOCK_PREFER_WRITER_NP,
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};
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struct thread_args
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{
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pthread_rwlock_t *rwlock;
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clockid_t clockid;
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const char *fnname;
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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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struct thread_args *args = arg;
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pthread_rwlock_t *r = args->rwlock;
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const clockid_t clockid = args->clockid;
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const clockid_t clockid_for_get =
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(clockid == CLOCK_USE_TIMEDLOCK) ? CLOCK_REALTIME : clockid;
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const char *fnname = args->fnname;
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/* Timeout: 0.3 secs. */
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struct timespec ts_start;
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xclock_gettime (clockid_for_get, &ts_start);
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struct timespec ts_timeout = timespec_add (ts_start,
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make_timespec (0, 300000000));
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verbose_printf ("child calling %srdlock\n", fnname);
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if (clockid == CLOCK_USE_TIMEDLOCK)
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TEST_COMPARE (pthread_rwlock_timedrdlock (r, &ts_timeout), ETIMEDOUT);
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else
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TEST_COMPARE (pthread_rwlock_clockrdlock (r, clockid, &ts_timeout),
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ETIMEDOUT);
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verbose_printf ("1st child %srdlock done\n", fnname);
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TEST_TIMESPEC_NOW_OR_AFTER (CLOCK_REALTIME, ts_timeout);
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xclock_gettime (clockid_for_get, &ts_timeout);
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ts_timeout.tv_sec += 10;
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/* Note that the following operation makes ts invalid. */
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ts_timeout.tv_nsec += 1000000000;
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if (clockid == CLOCK_USE_TIMEDLOCK)
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TEST_COMPARE (pthread_rwlock_timedrdlock (r, &ts_timeout), EINVAL);
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else
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TEST_COMPARE (pthread_rwlock_clockrdlock (r, clockid, &ts_timeout), EINVAL);
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verbose_printf ("2nd child %srdlock done\n", fnname);
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return NULL;
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}
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static int
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do_test_clock (clockid_t clockid, const char *fnname)
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{
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const clockid_t clockid_for_get =
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(clockid == CLOCK_USE_TIMEDLOCK) ? CLOCK_REALTIME : clockid;
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size_t cnt;
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for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt)
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{
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pthread_rwlock_t r;
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pthread_rwlockattr_t a;
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if (pthread_rwlockattr_init (&a) != 0)
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FAIL_EXIT1 ("round %zu: rwlockattr_t failed\n", cnt);
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if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0)
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FAIL_EXIT1 ("round %zu: rwlockattr_setkind failed\n", cnt);
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if (pthread_rwlock_init (&r, &a) != 0)
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FAIL_EXIT1 ("round %zu: rwlock_init failed\n", cnt);
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if (pthread_rwlockattr_destroy (&a) != 0)
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FAIL_EXIT1 ("round %zu: rwlockattr_destroy failed\n", cnt);
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struct timespec ts;
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xclock_gettime (clockid_for_get, &ts);
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++ts.tv_sec;
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/* Get a write lock. */
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int e = (clockid == CLOCK_USE_TIMEDLOCK)
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? pthread_rwlock_timedwrlock (&r, &ts)
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: pthread_rwlock_clockwrlock (&r, clockid, &ts);
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if (e != 0)
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FAIL_EXIT1 ("round %zu: %swrlock failed (%d)\n",
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cnt, fnname, e);
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verbose_printf ("1st %swrlock done\n", fnname);
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xclock_gettime (clockid_for_get, &ts);
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++ts.tv_sec;
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if (clockid == CLOCK_USE_TIMEDLOCK)
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TEST_COMPARE (pthread_rwlock_timedrdlock (&r, &ts), EDEADLK);
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else
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TEST_COMPARE (pthread_rwlock_clockrdlock (&r, clockid, &ts), EDEADLK);
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verbose_printf ("1st %srdlock done\n", fnname);
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xclock_gettime (clockid_for_get, &ts);
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++ts.tv_sec;
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if (clockid == CLOCK_USE_TIMEDLOCK)
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TEST_COMPARE (pthread_rwlock_timedwrlock (&r, &ts), EDEADLK);
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else
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TEST_COMPARE (pthread_rwlock_clockwrlock (&r, clockid, &ts), EDEADLK);
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verbose_printf ("2nd %swrlock done\n", fnname);
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struct thread_args args;
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args.rwlock = &r;
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args.clockid = clockid;
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args.fnname = fnname;
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pthread_t th = xpthread_create (NULL, tf, &args);
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puts ("started thread");
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(void) xpthread_join (th);
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puts ("joined thread");
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if (pthread_rwlock_destroy (&r) != 0)
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FAIL_EXIT1 ("round %zu: rwlock_destroy failed\n", cnt);
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}
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return 0;
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}
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static int do_test (void)
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{
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do_test_clock (CLOCK_USE_TIMEDLOCK, "timed");
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do_test_clock (CLOCK_REALTIME, "clock(realtime)");
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do_test_clock (CLOCK_MONOTONIC, "clock(monotonic)");
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return 0;
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}
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#include <support/test-driver.c>
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