98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/* Test that pthread_create diagnoses invalid scheduling parameters.
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Copyright (C) 2014-2022 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 <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static void *
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thread_function (void *arg)
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{
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abort ();
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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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#if !defined SCHED_FIFO || !defined SCHED_OTHER
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puts ("SCHED_FIFO or SCHED_OTHER not available at compile time");
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return 0; /* 77 */
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#else
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int err;
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#define TRY(func, arglist) \
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if ((err = func arglist) != 0) \
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{ \
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printf ("%s: %s\n", #func, strerror (err)); \
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return 2; \
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}
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int fifo_max = sched_get_priority_max (SCHED_FIFO);
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if (fifo_max == -1)
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{
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assert (errno == ENOTSUP || errno == ENOSYS);
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puts ("SCHED_FIFO not supported, cannot test");
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return 0; /* 77 */
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}
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int other_max = sched_get_priority_max (SCHED_OTHER);
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if (other_max == -1)
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{
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assert (errno == ENOTSUP || errno == ENOSYS);
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puts ("SCHED_OTHER not supported, cannot test");
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return 0; /* 77 */
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}
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assert (fifo_max > other_max);
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pthread_attr_t attr;
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TRY (pthread_attr_init, (&attr));
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TRY (pthread_attr_setinheritsched, (&attr, PTHREAD_EXPLICIT_SCHED));
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TRY (pthread_attr_setschedpolicy, (&attr, SCHED_FIFO));
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/* This value is chosen so as to be valid for SCHED_FIFO but invalid for
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SCHED_OTHER. */
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struct sched_param param = { .sched_priority = other_max + 1 };
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TRY (pthread_attr_setschedparam, (&attr, ¶m));
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TRY (pthread_attr_setschedpolicy, (&attr, SCHED_OTHER));
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/* Now ATTR has a sched_param that is invalid for its policy. */
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pthread_t th;
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err = pthread_create (&th, &attr, &thread_function, NULL);
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if (err != EINVAL)
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{
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printf ("pthread_create returned %d (%s), expected %d (EINVAL: %s)\n",
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err, strerror (err), EINVAL, strerror (EINVAL));
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return 1;
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}
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return 0;
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#endif
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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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