mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
5a82c74822
Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/* clock_getres -- Get the resolution of a POSIX clockid_t.
|
|
Copyright (C) 1999-2019 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 <errno.h>
|
|
#include <stdint.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#include <libc-internal.h>
|
|
#include <shlib-compat.h>
|
|
|
|
static inline int
|
|
realtime_getres (struct timespec *res)
|
|
{
|
|
long int clk_tck = __sysconf (_SC_CLK_TCK);
|
|
|
|
if (__glibc_likely (clk_tck != -1))
|
|
{
|
|
/* This implementation assumes that the realtime clock has a
|
|
resolution higher than 1 second. This is the case for any
|
|
reasonable implementation. */
|
|
res->tv_sec = 0;
|
|
res->tv_nsec = 1000000000 / clk_tck;
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/* Get resolution of clock. */
|
|
int
|
|
__clock_getres (clockid_t clock_id, struct timespec *res)
|
|
{
|
|
int retval = -1;
|
|
|
|
switch (clock_id)
|
|
{
|
|
case CLOCK_REALTIME:
|
|
retval = realtime_getres (res);
|
|
break;
|
|
|
|
default:
|
|
__set_errno (EINVAL);
|
|
break;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
|
|
/* clock_getres moved to libc in version 2.17;
|
|
old binaries may expect the symbol version it had in librt. */
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
|
|
strong_alias (__clock_getres, __clock_getres_2);
|
|
compat_symbol (libc, __clock_getres_2, clock_getres, GLIBC_2_2);
|
|
#endif
|