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4d1a02ef | 1 | /* Copyright (C) 2003, 2004 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 | |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
19 | ||
20 | #include <errno.h> | |
21 | #include <pthread.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <time.h> | |
25 | #include <unistd.h> | |
26 | ||
27 | ||
f38a3086 | 28 | #if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0 |
4165d44d UD |
29 | static pthread_barrier_t b2; |
30 | static pthread_barrier_t bN; | |
31 | ||
32 | ||
33 | static void * | |
34 | tf (void *arg) | |
35 | { | |
36 | int e = pthread_barrier_wait (&b2); | |
37 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
38 | { | |
39 | puts ("barrier_wait failed"); | |
40 | exit (1); | |
41 | } | |
42 | ||
43 | e = pthread_barrier_wait (&bN); | |
44 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
45 | { | |
46 | puts ("barrier_wait failed"); | |
47 | exit (1); | |
48 | } | |
49 | ||
50 | return NULL; | |
51 | } | |
abca9f7f | 52 | #endif |
4165d44d UD |
53 | |
54 | ||
55 | int | |
56 | do_test (void) | |
57 | { | |
e4bb4853 | 58 | #if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0 |
4165d44d UD |
59 | # define N 10 |
60 | ||
c56da3a3 UD |
61 | # if _POSIX_THREAD_CPUTIME == 0 |
62 | if (sysconf (_SC_THREAD_CPUTIME) < 0) | |
63 | { | |
64 | puts ("_POSIX_THREAD_CPUTIME option not available"); | |
65 | return 0; | |
66 | } | |
67 | # endif | |
68 | ||
4165d44d UD |
69 | if (pthread_barrier_init (&b2, NULL, 2) != 0 |
70 | || pthread_barrier_init (&bN, NULL, N + 1) != 0) | |
71 | { | |
72 | puts ("barrier_init failed"); | |
73 | return 1; | |
74 | } | |
75 | ||
76 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 }; | |
77 | TEMP_FAILURE_RETRY (nanosleep (&ts, &ts)); | |
78 | ||
79 | pthread_t th[N + 1]; | |
80 | clockid_t cl[N + 1]; | |
abca9f7f | 81 | # ifndef CLOCK_THREAD_CPUTIME_ID |
4165d44d UD |
82 | if (pthread_getcpuclockid (pthread_self (), &cl[0]) != 0) |
83 | { | |
84 | puts ("own pthread_getcpuclockid failed"); | |
85 | return 1; | |
86 | } | |
abca9f7f | 87 | # else |
4165d44d | 88 | cl[0] = CLOCK_THREAD_CPUTIME_ID; |
abca9f7f | 89 | # endif |
4165d44d | 90 | |
4d1a02ef UD |
91 | pthread_attr_t at; |
92 | ||
93 | if (pthread_attr_init (&at) != 0) | |
94 | { | |
95 | puts ("attr_init failed"); | |
96 | return 1; | |
97 | } | |
98 | ||
99 | if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0) | |
100 | { | |
101 | puts ("attr_setstacksize failed"); | |
102 | return 1; | |
103 | } | |
104 | ||
4165d44d UD |
105 | int i; |
106 | int e; | |
107 | for (i = 0; i < N; ++i) | |
108 | { | |
4d1a02ef | 109 | if (pthread_create (&th[i], &at, tf, NULL) != 0) |
4165d44d UD |
110 | { |
111 | puts ("create failed"); | |
112 | return 1; | |
113 | } | |
114 | ||
115 | e = pthread_barrier_wait (&b2); | |
116 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
117 | { | |
118 | puts ("barrier_wait failed"); | |
119 | return 1; | |
120 | } | |
121 | ||
122 | ts.tv_sec = 0; | |
123 | ts.tv_nsec = 100000000; | |
124 | TEMP_FAILURE_RETRY (nanosleep (&ts, &ts)); | |
125 | ||
126 | if (pthread_getcpuclockid (th[i], &cl[i + 1]) != 0) | |
127 | { | |
128 | puts ("pthread_getcpuclockid failed"); | |
129 | return 1; | |
130 | } | |
131 | } | |
132 | ||
4d1a02ef UD |
133 | if (pthread_attr_destroy (&at) != 0) |
134 | { | |
135 | puts ("attr_destroy failed"); | |
136 | return 1; | |
137 | } | |
138 | ||
4165d44d UD |
139 | struct timespec t[N + 1]; |
140 | for (i = 0; i < N + 1; ++i) | |
141 | if (clock_gettime (cl[i], &t[i]) != 0) | |
142 | { | |
143 | printf ("clock_gettime round %d failed\n", i); | |
144 | return 1; | |
145 | } | |
146 | ||
147 | for (i = 0; i < N; ++i) | |
148 | { | |
149 | struct timespec diff; | |
150 | ||
151 | diff.tv_sec = t[i].tv_sec - t[i + 1].tv_sec; | |
152 | diff.tv_nsec = t[i].tv_nsec - t[i + 1].tv_nsec; | |
153 | if (diff.tv_nsec < 0) | |
154 | { | |
155 | diff.tv_nsec += 1000000000; | |
156 | --diff.tv_sec; | |
157 | } | |
158 | ||
159 | if (diff.tv_sec < 0 || (diff.tv_sec == 0 && diff.tv_nsec < 100000000)) | |
160 | { | |
161 | printf ("\ | |
162 | difference between thread %d and %d too small (%ld.%09ld)\n", | |
163 | i, i + 1, (long int) diff.tv_sec, (long int) diff.tv_nsec); | |
164 | return 1; | |
165 | } | |
166 | ||
167 | printf ("diff %d->%d: %ld.%09ld\n", | |
168 | i, i + 1, (long int) diff.tv_sec, (long int) diff.tv_nsec); | |
169 | } | |
170 | ||
171 | ts.tv_sec = 0; | |
172 | ts.tv_nsec = 0; | |
173 | for (i = 0; i < N + 1; ++i) | |
174 | if (clock_settime (cl[i], &ts) != 0) | |
175 | { | |
176 | printf ("clock_settime(%d) round %d failed\n", cl[i], i); | |
177 | return 1; | |
178 | } | |
179 | ||
180 | for (i = 0; i < N + 1; ++i) | |
181 | { | |
182 | if (clock_gettime (cl[i], &ts) != 0) | |
183 | { | |
184 | puts ("clock_gettime failed"); | |
185 | return 1; | |
186 | } | |
187 | ||
188 | if (ts.tv_sec > t[i].tv_sec | |
189 | || (ts.tv_sec == t[i].tv_sec && ts.tv_nsec > t[i].tv_nsec)) | |
190 | { | |
191 | puts ("clock_settime didn't reset clock"); | |
192 | return 1; | |
193 | } | |
194 | } | |
195 | #endif | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | ||
201 | #define TEST_FUNCTION do_test () | |
202 | #include "../test-skeleton.c" |