Warning: That file was not part of the compilation database. It may have many parsing errors.

1/* Test that pthread_create diagnoses invalid scheduling parameters.
2 Copyright (C) 2014-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <assert.h>
20#include <errno.h>
21#include <pthread.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25
26
27static void *
28thread_function (void *arg)
29{
30 abort ();
31}
32
33
34static int
35do_test (void)
36{
37#if !defined SCHED_FIFO || !defined SCHED_OTHER
38 puts ("SCHED_FIFO or SCHED_OTHER not available at compile time");
39 return 0; /* 77 */
40#else
41
42 int err;
43
44#define TRY(func, arglist) \
45 if ((err = func arglist) != 0) \
46 { \
47 printf ("%s: %s\n", #func, strerror (err)); \
48 return 2; \
49 }
50
51 int fifo_max = sched_get_priority_max (SCHED_FIFO);
52 if (fifo_max == -1)
53 {
54 assert (errno == ENOTSUP || errno == ENOSYS);
55 puts ("SCHED_FIFO not supported, cannot test");
56 return 0; /* 77 */
57 }
58
59 int other_max = sched_get_priority_max (SCHED_OTHER);
60 if (other_max == -1)
61 {
62 assert (errno == ENOTSUP || errno == ENOSYS);
63 puts ("SCHED_OTHER not supported, cannot test");
64 return 0; /* 77 */
65 }
66
67 assert (fifo_max > other_max);
68
69 pthread_attr_t attr;
70 TRY (pthread_attr_init, (&attr));
71 TRY (pthread_attr_setinheritsched, (&attr, PTHREAD_EXPLICIT_SCHED));
72 TRY (pthread_attr_setschedpolicy, (&attr, SCHED_FIFO));
73
74 /* This value is chosen so as to be valid for SCHED_FIFO but invalid for
75 SCHED_OTHER. */
76 struct sched_param param = { .sched_priority = other_max + 1 };
77 TRY (pthread_attr_setschedparam, (&attr, &param));
78
79 TRY (pthread_attr_setschedpolicy, (&attr, SCHED_OTHER));
80
81 /* Now ATTR has a sched_param that is invalid for its policy. */
82 pthread_t th;
83 err = pthread_create (&th, &attr, &thread_function, NULL);
84 if (err != EINVAL)
85 {
86 printf ("pthread_create returned %d (%s), expected %d (EINVAL: %s)\n",
87 err, strerror (err), EINVAL, strerror (EINVAL));
88 return 1;
89 }
90
91 return 0;
92#endif
93}
94
95
96#define TEST_FUNCTION do_test ()
97#include "../test-skeleton.c"
98

Warning: That file was not part of the compilation database. It may have many parsing errors.