sysdeps/mach/getsysstats.c

   1 /* System dependent pieces of sysconf; Mach version
   2    Copyright (C) 1996-2015 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 <mach.h>
  21 #include <hurd.h>
  22 #include <sys/sysinfo.h>
  23
  24
  25 /* Return the number of processors configured on the system. */
  26 int
  27 __get_nprocs_conf (void)
  28 {
  29   struct host_basic_info hbi;
  30   kern_return_t err;
  31   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  32
  33   err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
  34                      (host_info_t) &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 weak_alias (__get_nprocs_conf, get_nprocs_conf)
  43
  44 /* Return the number of processors currently available on the system. */
  45 int
  46 __get_nprocs (void)
  47 {
  48   struct host_basic_info hbi;
  49   kern_return_t err;
  50   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  51
  52   err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
  53                      (host_info_t) &hbi, &cnt);
  54   if (err)
  55     return __hurd_fail (err);
  56   else if (cnt != HOST_BASIC_INFO_COUNT)
  57     return __hurd_fail (EIEIO);
  58
  59   return hbi.avail_cpus;
  60 }
  61 weak_alias (__get_nprocs, get_nprocs)
  62
  63 /* Return the number of physical pages on the system. */
  64 long int
  65 __get_phys_pages (void)
  66 {
  67   struct host_basic_info hbi;
  68   kern_return_t err;
  69   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  70
  71   err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
  72                      (host_info_t) &hbi, &cnt);
  73   if (err)
  74     return __hurd_fail (err);
  75   else if (cnt != HOST_BASIC_INFO_COUNT)
  76     return __hurd_fail (EIEIO);
  77
  78   return hbi.memory_size / __vm_page_size;
  79 }
  80 weak_alias (__get_phys_pages, get_phys_pages)
  81
  82 /* Return the number of available physical pages */
  83 long int
  84 __get_avphys_pages (void)
  85 {
  86   vm_statistics_data_t vs;
  87   kern_return_t err;
  88
  89 #ifdef HOST_VM_INFO
  90   {
  91     mach_msg_type_number_t count = HOST_VM_INFO_COUNT;
  92     err = __host_info (__mach_host_self (), HOST_VM_INFO,
  93                        (host_info_t) &vs, &count);
  94     if (!err && count < HOST_VM_INFO_COUNT)
  95       err = EGRATUITOUS;
  96   }
  97 #else
  98   err = __vm_statistics (__mach_task_self (), &vs);
  99 #endif
 100   if (err)
 101     return __hurd_fail (err);
 102
 103   return vs.free_count;
 104 }
 105 weak_alias (__get_avphys_pages, get_avphys_pages)