sysdeps/unix/sysv/linux/libc-vdso.h

   1 /* Copyright (C) 2009-2019 Free Software Foundation, Inc.
   2
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _LIBC_VDSO_H
  20 #define _LIBC_VDSO_H
  21
  22 #define VDSO_SYMBOL(__name) __vdso_##__name
  23
  24 #ifdef HAVE_CLOCK_GETTIME_VSYSCALL
  25 extern int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *)
  26   attribute_hidden;
  27 #endif
  28 #ifdef HAVE_CLOCK_GETRES_VSYSCALL
  29 extern int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *)
  30   attribute_hidden;
  31 #endif
  32 #ifdef HAVE_GETTIMEOFDAY_VSYSCALL
  33 extern int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
  34   attribute_hidden;
  35 #endif
  36 #ifdef HAVE_GETCPU_VSYSCALL
  37 extern long int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *, void *)
  38   attribute_hidden;
  39 #endif
  40 #ifdef HAVE_TIME_VSYSCALL
  41 extern time_t (*VDSO_SYMBOL(time)) (time_t *) attribute_hidden;
  42 #endif
  43
  44 #endif /* _LIBC_VDSO_H */