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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-10-24 17:52:30 +0000 |
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| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-10-30 17:05:14 -0300 |
| commit | 0d563783490bf5b2d7d52cab205760fdff5d5650 (patch) | |
| tree | e1578f3d2c36b1ee5b4f0fb84705141ebcf1d301 /sysdeps/posix/time.c | |
| parent | c3f9aef063cd9d5911e20d4f2b919ff2914c7965 (diff) | |
| download | glibc-0d563783490bf5b2d7d52cab205760fdff5d5650.tar.gz glibc-0d563783490bf5b2d7d52cab205760fdff5d5650.tar.xz glibc-0d563783490bf5b2d7d52cab205760fdff5d5650.zip | |
Use clock_gettime to implement time.
Change the default implementation of time to call clock_gettime, to align with new Linux ports that are expected to only implement __NR_clock_gettime. Arch-specific implementation that either call the time vDSO or route to gettimeofday vDSO are not removed. Also for Linux, CLOCK_REALTIME_COARSE is used instead of generic CLOCK_REALTIME clockid. This takes less CPU time and its behavior better matches what the current glibc does. Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu. Co-authored-by: Zack Weinberg <zackw@panix.com> Reviewed-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'sysdeps/posix/time.c')
| -rw-r--r-- | sysdeps/posix/time.c | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/sysdeps/posix/time.c b/sysdeps/posix/time.c deleted file mode 100644 index 0ab31bd7b6..0000000000 --- a/sysdeps/posix/time.c +++ /dev/null @@ -1,40 +0,0 @@ -/* Copyright (C) 1991-2019 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 <stddef.h> /* For NULL. */ -#include <time.h> -#include <sys/time.h> - - -/* Return the current time as a `time_t' and also put it in *T if T is - not NULL. Time is represented as seconds from Jan 1 00:00:00 1970. */ -time_t -time (time_t *t) -{ - struct timeval tv; - time_t result; - - if (__gettimeofday (&tv, (struct timezone *) NULL)) - result = (time_t) -1; - else - result = (time_t) tv.tv_sec; - - if (t != NULL) - *t = result; - return result; -} -libc_hidden_def (time) |