sysdeps/mach/getsysstats.c

   1 /* System dependent pieces of sysconf; Mach version
   2 Copyright (C) 1996 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 Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 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 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, USA.  */
  19
  20 #include <errno.h>
  21 #include <mach.h>
  22 #include <hurd.h>
  23 #include <sys/sysinfo.h>
  24
  25
  26 /* Return the number of processors configured on the system. */
  27 int
  28 __get_nprocs_conf ()
  29 {
  30   struct host_basic_info hbi;
  31   kern_return_t err;
  32   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  33
  34   err = __host_info (__mach_host_self (), HOST_BASIC_INFO, &hbi, &cnt);
  35   if (err)
  36     return __hurd_fail (err);
  37   else if (cnt != HOST_BASIC_INFO_COUNT)
  38     return __hurd_fail (EIEIO);
  39
  40   return hbi.max_cpus;
  41 }
  42
  43 /* Return the number of processors currently available on the system. */
  44 int
  45 __get_nprocs ()
  46 {
  47   struct host_basic_info hbi;
  48   kern_return_t err;
  49   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  50
  51   err = __host_info (__mach_host_self (), HOST_BASIC_INFO, &hbi, &cnt);
  52   if (err)
  53     return __hurd_fail (err);
  54   else if (cnt != HOST_BASIC_INFO_COUNT)
  55     return __hurd_fail (EIEIO);
  56
  57   return hbi.avail_cpus;
  58 }
  59
  60 /* Return the number of physical pages on the system. */
  61 int
  62 __get_phys_pages ()
  63 {
  64   struct host_basic_info hbi;
  65   kern_return_t err;
  66   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  67
  68   err = __host_info (__mach_host_self (), HOST_BASIC_INFO, &hbi, &cnt);
  69   if (err)
  70     return __hurd_fail (err);
  71   else if (cnt != HOST_BASIC_INFO_COUNT)
  72     return __hurd_fail (EIEIO);
  73
  74   return hbi.memory_size / __vm_page_size;
  75 }
  76
  77 /* Return the number of available physical pages */
  78 int
  79 __get_avphys_pages ()
  80 {
  81   vm_statistics_data_t vs;
  82   kern_return_t err;
  83
  84   err = __vm_statistics (__mach_task_self (), &vs);
  85   if (err)
  86     return __hurd_fail (err);
  87
  88   return vs.free_count;
  89 }
  90