Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
glibc/sysdeps/unix/sysv/linux/clock_gettime.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
47 lines (38 sloc)
1.63 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* clock_gettime -- Get current time from a POSIX clockid_t. Linux version. | |
Copyright (C) 2003-2016 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 | |
<http://www.gnu.org/licenses/>. */ | |
#include <sysdep.h> | |
#include <errno.h> | |
#include <time.h> | |
#include "kernel-posix-cpu-timers.h" | |
#ifdef HAVE_CLOCK_GETTIME_VSYSCALL | |
# define HAVE_VSYSCALL | |
#endif | |
#include <sysdep-vdso.h> | |
/* The REALTIME and MONOTONIC clock are definitely supported in the | |
kernel. */ | |
#define SYSDEP_GETTIME \ | |
SYSDEP_GETTIME_CPUTIME; \ | |
case CLOCK_REALTIME: \ | |
case CLOCK_MONOTONIC: \ | |
retval = INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp); \ | |
break | |
/* We handled the REALTIME clock here. */ | |
#define HANDLED_REALTIME 1 | |
#define HANDLED_CPUTIME 1 | |
#define SYSDEP_GETTIME_CPU(clock_id, tp) \ | |
retval = INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp); \ | |
break | |
#define SYSDEP_GETTIME_CPUTIME /* Default catches them too. */ | |
#include <sysdeps/unix/clock_gettime.c> |