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Diffstat (limited to 'nptl/tst-tpp.h')
| -rw-r--r-- | nptl/tst-tpp.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/nptl/tst-tpp.h b/nptl/tst-tpp.h new file mode 100644 index 0000000000..c5844b26dd --- /dev/null +++ b/nptl/tst-tpp.h @@ -0,0 +1,94 @@ +/* Copyright (C) 2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2006. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <pthread.h> +#include <sched.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/syscall.h> + +/* This test is Linux specific. */ +#define CHECK_TPP_PRIORITY(normal, boosted) \ + do \ + { \ + pid_t tid = syscall (__NR_gettid); \ + \ + struct sched_param cep_sp; \ + int cep_policy; \ + if (pthread_getschedparam (pthread_self (), &cep_policy, \ + &cep_sp) != 0) \ + { \ + puts ("getschedparam failed"); \ + ret = 1; \ + } \ + else if (cep_sp.sched_priority != (normal)) \ + { \ + printf ("unexpected priority %d != %d\n", \ + cep_sp.sched_priority, (normal)); \ + } \ + if (syscall (__NR_sched_getparam, tid, &cep_sp) == 0 \ + && cep_sp.sched_priority != (boosted)) \ + { \ + printf ("unexpected boosted priority %d != %d\n", \ + cep_sp.sched_priority, (boosted)); \ + ret = 1; \ + } \ + } \ + while (0) + +int fifo_min, fifo_max; + +void +init_tpp_test (void) +{ + fifo_min = sched_get_priority_min (SCHED_FIFO); + if (fifo_min < 0) + { + printf ("couldn't get min priority for SCHED_FIFO: %m\n"); + exit (1); + } + + fifo_max = sched_get_priority_max (SCHED_FIFO); + if (fifo_max < 0) + { + printf ("couldn't get max priority for SCHED_FIFO: %m\n"); + exit (1); + } + + if (fifo_min > 4 || fifo_max < 10) + { + printf ("%d..%d SCHED_FIFO priority interval not suitable for this test\n", + fifo_min, fifo_max); + exit (0); + } + + struct sched_param sp; + memset (&sp, 0, sizeof (sp)); + sp.sched_priority = 4; + int e = pthread_setschedparam (pthread_self (), SCHED_FIFO, &sp); + if (e != 0) + { + errno = e; + printf ("cannot set scheduling params: %m\n"); + exit (0); + } +} |