sysdeps/nacl/getsysstats.c

   1 /* getsysstats - Determine various system internal values.  NaCl version.
   2    Copyright (C) 2015-2017 Free Software Foundation, Inc.
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <sys/sysinfo.h>
  21 #include <nacl-interfaces.h>
  22
  23 #undef __native_client__
  24 #include "native_client/src/trusted/service_runtime/include/sys/unistd.h"
  25
  26
  27 int
  28 __get_nprocs_conf (void)
  29 {
  30   int nprocs;
  31   if (__nacl_irt_basic.sysconf (NACL_ABI__SC_NPROCESSORS_ONLN, &nprocs) != 0)
  32     /* On failure (which should be impossible), just report one processor.  */
  33     nprocs = 1;
  34   return nprocs;
  35 }
  36 weak_alias (__get_nprocs_conf, get_nprocs_conf)
  37
  38 int
  39 __get_nprocs (void)
  40 {
  41   return __get_nprocs_conf ();
  42 }
  43 weak_alias (__get_nprocs, get_nprocs)
  44
  45
  46 long int
  47 __get_phys_pages (void)
  48 {
  49   /* We have no general way to determine this value.  */
  50   __set_errno (ENOSYS);
  51   return -1;
  52 }
  53 weak_alias (__get_phys_pages, get_phys_pages)
  54 stub_warning (get_phys_pages)
  55
  56
  57 long int
  58 __get_avphys_pages (void)
  59 {
  60   /* We have no general way to determine this value.  */
  61   __set_errno (ENOSYS);
  62   return -1;
  63 }
  64 weak_alias (__get_avphys_pages, get_avphys_pages)
  65 stub_warning (get_avphys_pages)