1 /* Copyright (C) 2003-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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.
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.
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/>. */
27 #if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0
28 static pthread_barrier_t b2;
29 static pthread_barrier_t bN;
35 int e = pthread_barrier_wait (&b2);
36 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
38 puts ("barrier_wait failed");
42 e = pthread_barrier_wait (&bN);
43 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
45 puts ("barrier_wait failed");
57 #if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0
60 # if _POSIX_THREAD_CPUTIME == 0
61 if (sysconf (_SC_THREAD_CPUTIME) < 0)
63 puts ("_POSIX_THREAD_CPUTIME option not available");
68 if (pthread_barrier_init (&b2, NULL, 2) != 0
69 || pthread_barrier_init (&bN, NULL, N + 1) != 0)
71 puts ("barrier_init failed");
75 struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 };
76 TEMP_FAILURE_RETRY (nanosleep (&ts, &ts));
80 # ifndef CLOCK_THREAD_CPUTIME_ID
81 if (pthread_getcpuclockid (pthread_self (), &cl[0]) != 0)
83 puts ("own pthread_getcpuclockid failed");
87 cl[0] = CLOCK_THREAD_CPUTIME_ID;
92 if (pthread_attr_init (&at) != 0)
94 puts ("attr_init failed");
98 if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
100 puts ("attr_setstacksize failed");
106 for (i = 0; i < N; ++i)
108 if (pthread_create (&th[i], &at, tf, NULL) != 0)
110 puts ("create failed");
114 e = pthread_barrier_wait (&b2);
115 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
117 puts ("barrier_wait failed");
122 ts.tv_nsec = 100000000;
123 TEMP_FAILURE_RETRY (nanosleep (&ts, &ts));
125 if (pthread_getcpuclockid (th[i], &cl[i + 1]) != 0)
127 puts ("pthread_getcpuclockid failed");
132 if (pthread_attr_destroy (&at) != 0)
134 puts ("attr_destroy failed");
138 struct timespec t[N + 1];
139 for (i = 0; i < N + 1; ++i)
140 if (clock_gettime (cl[i], &t[i]) != 0)
142 printf ("clock_gettime round %d failed\n", i);
146 for (i = 0; i < N; ++i)
148 struct timespec diff;
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)
154 diff.tv_nsec += 1000000000;
158 if (diff.tv_sec < 0 || (diff.tv_sec == 0 && diff.tv_nsec < 100000000))
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);
166 printf ("diff %d->%d: %ld.%09ld\n",
167 i, i + 1, (long int) diff.tv_sec, (long int) diff.tv_nsec);
172 for (i = 0; i < N + 1; ++i)
173 if (clock_settime (cl[i], &ts) != 0)
175 printf ("clock_settime(%d) round %d failed\n", cl[i], i);
179 for (i = 0; i < N + 1; ++i)
181 if (clock_gettime (cl[i], &ts) != 0)
183 puts ("clock_gettime failed");
187 if (ts.tv_sec > t[i].tv_sec
188 || (ts.tv_sec == t[i].tv_sec && ts.tv_nsec > t[i].tv_nsec))
190 puts ("clock_settime didn't reset clock");
200 #define TEST_FUNCTION do_test ()
201 #include "../test-skeleton.c"