/proc to be mounted. However, different than fexecve, if the syscall is not
supported by the kernel an error is returned instead of trying a fallback.
+* The ISO C2X function timespec_getres has been added.
+
Deprecated and removed features, and other changes affecting compatibility:
* The function pthread_mutex_consistent_np has been deprecated; programs
extern __typeof (clock_settime) __clock_settime;
libc_hidden_proto (__clock_settime)
+extern __typeof (clock_getres) __clock_getres;
+libc_hidden_proto (__clock_getres)
+
extern __typeof (clock_nanosleep) __clock_nanosleep;
libc_hidden_proto (__clock_nanosleep);
# define __clock_nanosleep_time64 __clock_nanosleep
# define __clock_gettime64 __clock_gettime
# define __timespec_get64 __timespec_get
+# define __timespec_getres64 __timespec_getres
#else
extern int __clock_nanosleep_time64 (clockid_t clock_id,
int flags, const struct __timespec64 *req,
libc_hidden_proto (__clock_gettime64)
extern int __timespec_get64 (struct __timespec64 *ts, int base);
libc_hidden_proto (__timespec_get64)
+extern int __timespec_getres64 (struct __timespec64 *ts, int base);
+libc_hidden_proto (__timespec_getres64)
#endif
#if __TIMESIZE == 64
GLIBC_2.34 __libc_start_main F
GLIBC_2.34 _hurd_libc_proc_init F
GLIBC_2.34 execveat F
+GLIBC_2.34 timespec_getres F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
return retval;
}
+libc_hidden_def (__clock_getres)
versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
/* clock_getres moved to libc in version 2.17;
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
return retval;
}
#endif
+libc_hidden_def (__clock_getres)
versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
/* clock_getres moved to libc in version 2.17;
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
--- /dev/null
+/* Get resolution of a time base.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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.
+
+ 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, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <time.h>
+
+/* Set TS to resolution of time base BASE. */
+int
+__timespec_getres64 (struct __timespec64 *ts, int base)
+{
+ if (base == TIME_UTC)
+ {
+ __clock_getres64 (CLOCK_REALTIME, ts);
+ return base;
+ }
+ return 0;
+}
+
+#if __TIMESIZE != 64
+libc_hidden_def (__timespec_getres64)
+
+int
+__timespec_getres (struct timespec *ts, int base)
+{
+ int ret;
+ struct __timespec64 tp64;
+
+ ret = __timespec_getres64 (&tp64, base);
+
+ if (ret == TIME_UTC && ts != NULL)
+ *ts = valid_timespec64_to_timespec (tp64);
+
+ return ret;
+}
+#endif
+strong_alias (__timespec_getres, timespec_getres);
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
GLIBC_2.34 thrd_detach F
GLIBC_2.34 thrd_exit F
GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
GLIBC_2.34 tss_create F
GLIBC_2.34 tss_delete F
GLIBC_2.34 tss_get F
stime dysize timegm ftime \
getdate strptime strptime_l \
strftime wcsftime strftime_l wcsftime_l \
- timespec_get \
+ timespec_get timespec_getres \
clock_getcpuclockid clock_getres \
clock_gettime clock_settime clock_nanosleep
tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1 \
tst-adjtime tst-ctime tst-difftime tst-mktime4 tst-clock_settime \
tst-settimeofday tst-itimer tst-gmtime tst-timegm \
- tst-timespec_get
+ tst-timespec_get tst-timespec_getres
include ../Rules
clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
clock_nanosleep;
}
+ GLIBC_2.34 {
+ timespec_getres;
+ }
GLIBC_PRIVATE {
# same as clock_gettime; used in other libraries
__clock_gettime;
__set_errno (ENOSYS);
return -1;
}
+libc_hidden_def (__clock_getres)
versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
/* clock_getres moved to libc in version 2.17;
#endif
+#if __GLIBC_USE (ISOC2X)
+/* Set TS to resolution of time base BASE. */
+extern int timespec_getres (struct timespec *__ts, int __base)
+ __THROW;
+#endif
+
+
#ifdef __USE_XOPEN_EXTENDED
/* Set to one of the following values to indicate an error.
1 the DATEMSK environment variable is null or undefined,
--- /dev/null
+/* Get resolution of a time base.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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.
+
+ 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, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <time.h>
+
+
+/* Set TS to resolution of time base BASE. */
+int
+timespec_getres (struct timespec *ts, int base)
+{
+ if (base == TIME_UTC)
+ {
+ __clock_getres (CLOCK_REALTIME, ts);
+ return base;
+ }
+ return 0;
+}
--- /dev/null
+/* Basic tests for timespec_getres.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <time.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ {
+ struct timespec ts;
+ TEST_COMPARE (timespec_getres (&ts, 0), 0);
+ TEST_COMPARE (timespec_getres (NULL, 0), 0);
+ }
+
+ {
+ struct timespec ts;
+ TEST_COMPARE (timespec_getres (&ts, TIME_UTC), TIME_UTC);
+ /* Expect all supported systems to support TIME_UTC with
+ resolution better than one second. */
+ TEST_VERIFY (ts.tv_sec == 0);
+ TEST_VERIFY (ts.tv_nsec > 0);
+ TEST_VERIFY (ts.tv_nsec < 1000000000);
+ TEST_COMPARE (timespec_getres (NULL, TIME_UTC), TIME_UTC);
+ /* Expect the resolution to be the same as that reported for
+ CLOCK_REALTIME with clock_getres. */
+ struct timespec cts;
+ TEST_COMPARE (clock_getres (CLOCK_REALTIME, &cts), 0);
+ TEST_COMPARE (ts.tv_sec, cts.tv_sec);
+ TEST_COMPARE (ts.tv_nsec, cts.tv_nsec);
+ }
+
+ return 0;
+}
+
+#include <support/test-driver.c>