95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/* Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <pthread.h>
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#include <sched.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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#include <unistd.h>
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#include <sys/syscall.h>
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/* This test is Linux specific. */
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#define CHECK_TPP_PRIORITY(normal, boosted) \
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do \
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{ \
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pid_t tid = syscall (__NR_gettid); \
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\
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struct sched_param cep_sp; \
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int cep_policy; \
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if (pthread_getschedparam (pthread_self (), &cep_policy, \
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&cep_sp) != 0) \
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{ \
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puts ("getschedparam failed"); \
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ret = 1; \
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} \
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else if (cep_sp.sched_priority != (normal)) \
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{ \
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printf ("unexpected priority %d != %d\n", \
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cep_sp.sched_priority, (normal)); \
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} \
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if (syscall (__NR_sched_getparam, tid, &cep_sp) == 0 \
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&& cep_sp.sched_priority != (boosted)) \
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{ \
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printf ("unexpected boosted priority %d != %d\n", \
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cep_sp.sched_priority, (boosted)); \
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ret = 1; \
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} \
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} \
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while (0)
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int fifo_min, fifo_max;
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void
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init_tpp_test (void)
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{
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fifo_min = sched_get_priority_min (SCHED_FIFO);
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if (fifo_min < 0)
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{
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printf ("couldn't get min priority for SCHED_FIFO: %m\n");
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exit (1);
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}
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fifo_max = sched_get_priority_max (SCHED_FIFO);
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if (fifo_max < 0)
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{
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printf ("couldn't get max priority for SCHED_FIFO: %m\n");
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exit (1);
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}
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if (fifo_min > 4 || fifo_max < 10)
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{
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printf ("%d..%d SCHED_FIFO priority interval not suitable for this test\n",
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fifo_min, fifo_max);
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exit (0);
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}
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struct sched_param sp;
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memset (&sp, 0, sizeof (sp));
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sp.sched_priority = 4;
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int e = pthread_setschedparam (pthread_self (), SCHED_FIFO, &sp);
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if (e != 0)
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{
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errno = e;
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printf ("cannot set scheduling params: %m\n");
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exit (0);
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}
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}
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