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bfff8b1b | 1 | /* Copyright (C) 2003-2017 Free Software Foundation, Inc. |
4165d44d UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. | |
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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
4165d44d UD |
18 | |
19 | #include <errno.h> | |
20 | #include <pthread.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <time.h> | |
24 | #include <unistd.h> | |
25 | ||
26 | ||
f38a3086 | 27 | #if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0 |
4165d44d UD |
28 | static pthread_barrier_t b2; |
29 | static pthread_barrier_t bN; | |
30 | ||
31 | ||
32 | static void * | |
33 | tf (void *arg) | |
34 | { | |
35 | int e = pthread_barrier_wait (&b2); | |
36 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
37 | { | |
38 | puts ("barrier_wait failed"); | |
39 | exit (1); | |
40 | } | |
41 | ||
42 | e = pthread_barrier_wait (&bN); | |
43 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
44 | { | |
45 | puts ("barrier_wait failed"); | |
46 | exit (1); | |
47 | } | |
48 | ||
49 | return NULL; | |
50 | } | |
abca9f7f | 51 | #endif |
4165d44d UD |
52 | |
53 | ||
54 | int | |
55 | do_test (void) | |
56 | { | |
e4bb4853 | 57 | #if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0 |
4165d44d UD |
58 | # define N 10 |
59 | ||
c56da3a3 UD |
60 | # if _POSIX_THREAD_CPUTIME == 0 |
61 | if (sysconf (_SC_THREAD_CPUTIME) < 0) | |
62 | { | |
63 | puts ("_POSIX_THREAD_CPUTIME option not available"); | |
64 | return 0; | |
65 | } | |
66 | # endif | |
67 | ||
4165d44d UD |
68 | if (pthread_barrier_init (&b2, NULL, 2) != 0 |
69 | || pthread_barrier_init (&bN, NULL, N + 1) != 0) | |
70 | { | |
71 | puts ("barrier_init failed"); | |
72 | return 1; | |
73 | } | |
74 | ||
75 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 }; | |
76 | TEMP_FAILURE_RETRY (nanosleep (&ts, &ts)); | |
77 | ||
78 | pthread_t th[N + 1]; | |
79 | clockid_t cl[N + 1]; | |
abca9f7f | 80 | # ifndef CLOCK_THREAD_CPUTIME_ID |
4165d44d UD |
81 | if (pthread_getcpuclockid (pthread_self (), &cl[0]) != 0) |
82 | { | |
83 | puts ("own pthread_getcpuclockid failed"); | |
84 | return 1; | |
85 | } | |
abca9f7f | 86 | # else |
4165d44d | 87 | cl[0] = CLOCK_THREAD_CPUTIME_ID; |
abca9f7f | 88 | # endif |
4165d44d | 89 | |
4d1a02ef UD |
90 | pthread_attr_t at; |
91 | ||
92 | if (pthread_attr_init (&at) != 0) | |
93 | { | |
94 | puts ("attr_init failed"); | |
95 | return 1; | |
96 | } | |
97 | ||
98 | if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0) | |
99 | { | |
100 | puts ("attr_setstacksize failed"); | |
101 | return 1; | |
102 | } | |
103 | ||
4165d44d UD |
104 | int i; |
105 | int e; | |
106 | for (i = 0; i < N; ++i) | |
107 | { | |
4d1a02ef | 108 | if (pthread_create (&th[i], &at, tf, NULL) != 0) |
4165d44d UD |
109 | { |
110 | puts ("create failed"); | |
111 | return 1; | |
112 | } | |
113 | ||
114 | e = pthread_barrier_wait (&b2); | |
115 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
116 | { | |
117 | puts ("barrier_wait failed"); | |
118 | return 1; | |
119 | } | |
120 | ||
121 | ts.tv_sec = 0; | |
122 | ts.tv_nsec = 100000000; | |
123 | TEMP_FAILURE_RETRY (nanosleep (&ts, &ts)); | |
124 | ||
125 | if (pthread_getcpuclockid (th[i], &cl[i + 1]) != 0) | |
126 | { | |
127 | puts ("pthread_getcpuclockid failed"); | |
128 | return 1; | |
129 | } | |
130 | } | |
131 | ||
4d1a02ef UD |
132 | if (pthread_attr_destroy (&at) != 0) |
133 | { | |
134 | puts ("attr_destroy failed"); | |
135 | return 1; | |
136 | } | |
137 | ||
4165d44d UD |
138 | struct timespec t[N + 1]; |
139 | for (i = 0; i < N + 1; ++i) | |
140 | if (clock_gettime (cl[i], &t[i]) != 0) | |
141 | { | |
142 | printf ("clock_gettime round %d failed\n", i); | |
143 | return 1; | |
144 | } | |
145 | ||
146 | for (i = 0; i < N; ++i) | |
147 | { | |
148 | struct timespec diff; | |
149 | ||
150 | diff.tv_sec = t[i].tv_sec - t[i + 1].tv_sec; | |
151 | diff.tv_nsec = t[i].tv_nsec - t[i + 1].tv_nsec; | |
152 | if (diff.tv_nsec < 0) | |
153 | { | |
154 | diff.tv_nsec += 1000000000; | |
155 | --diff.tv_sec; | |
156 | } | |
157 | ||
158 | if (diff.tv_sec < 0 || (diff.tv_sec == 0 && diff.tv_nsec < 100000000)) | |
159 | { | |
160 | printf ("\ | |
161 | difference between thread %d and %d too small (%ld.%09ld)\n", | |
162 | i, i + 1, (long int) diff.tv_sec, (long int) diff.tv_nsec); | |
163 | return 1; | |
164 | } | |
165 | ||
166 | printf ("diff %d->%d: %ld.%09ld\n", | |
167 | i, i + 1, (long int) diff.tv_sec, (long int) diff.tv_nsec); | |
168 | } | |
169 | ||
170 | ts.tv_sec = 0; | |
171 | ts.tv_nsec = 0; | |
172 | for (i = 0; i < N + 1; ++i) | |
173 | if (clock_settime (cl[i], &ts) != 0) | |
174 | { | |
175 | printf ("clock_settime(%d) round %d failed\n", cl[i], i); | |
176 | return 1; | |
177 | } | |
178 | ||
179 | for (i = 0; i < N + 1; ++i) | |
180 | { | |
181 | if (clock_gettime (cl[i], &ts) != 0) | |
182 | { | |
183 | puts ("clock_gettime failed"); | |
184 | return 1; | |
185 | } | |
186 | ||
187 | if (ts.tv_sec > t[i].tv_sec | |
188 | || (ts.tv_sec == t[i].tv_sec && ts.tv_nsec > t[i].tv_nsec)) | |
189 | { | |
190 | puts ("clock_settime didn't reset clock"); | |
191 | return 1; | |
192 | } | |
193 | } | |
194 | #endif | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | ||
200 | #define TEST_FUNCTION do_test () | |
201 | #include "../test-skeleton.c" |