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2003-03-02 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/bits/posix_opt.h: Define _POSIX_MONOTONIC_CLOCK. * linuxthreads/sysdeps/unix/sysv/linux/i386/bits/posix_opt.h: Likewise.
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Get file-specific information about a file. Linux version.
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Copyright (C) 2003 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <time.h>
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#include <unistd.h>
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static long int posix_sysconf (int name);
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/* Define this first, so it can be inlined. */
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#define __sysconf static posix_sysconf
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#include <sysdeps/posix/sysconf.c>
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/* Get the value of the system variable NAME. */
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long int
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__sysconf (int name)
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{
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switch (name)
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{
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#ifdef __NR_clock_getres
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case _SC_MONOTONIC_CLOCK:
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/* Check using the clock_getres system call. */
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{
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struct timespec ts;
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INTERNAL_SYSCALL_DECL (err);
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int r = INTERNAL_SYSCALL (clock_getres, err, 2, CLOCK_MONOTONIC, &ts);
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return INTERNAL_SYSCALL_ERROR_P (r, err) ? 0 : 1;
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}
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#endif
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default:
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return posix_sysconf (name);
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}
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}
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