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f9a7554009
As for gettimeofday, time will be implemented based on clock_gettime on all platforms and internal code should use clock_gettime directly. In addition to removing a layer of indirection, this will allow us to remove the PLT-bypass gunk for gettimeofday. The changed code always assumes __clock_gettime (CLOCK_REALTIME) or __clock_gettime (CLOCK_REALTIME_COARSE) (for Linux case) cannot fail, using the same rationale for gettimeofday change. And internal helper was added (time_now). Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, powerpc64-linux-gnu, and powerpc-linux-gnu. Reviewed-by: Lukasz Majewski <lukma@denx.de>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* time -- Get number of seconds since Epoch. Linux/x86 version.
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Copyright (C) 2015-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <time.h>
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#include <sysdep.h>
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#ifdef HAVE_TIME_VSYSCALL
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# define HAVE_VSYSCALL
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#endif
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#include <sysdep-vdso.h>
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static time_t
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time_vsyscall (time_t *t)
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{
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return INLINE_VSYSCALL (time, 1, t);
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}
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#ifdef SHARED
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# include <dl-vdso.h>
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# include <libc-vdso.h>
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#undef INIT_ARCH
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#define INIT_ARCH()
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/* If the vDSO is not available we fall back on the syscall. */
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libc_ifunc (time, (get_vdso_symbol ("__vdso_time") ?: time_vsyscall))
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#else
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time_t
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time (time_t *t)
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{
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return time_vsyscall (t);
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}
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#endif
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