sysdeps/mach/getsysstats.c

   1 /* System dependent pieces of sysconf; Mach version
   2    Copyright (C) 1996,97,99,2001,02 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 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,
  35                      (host_info_t) &hbi, &cnt);
  36   if (err)
  37     return __hurd_fail (err);
  38   else if (cnt != HOST_BASIC_INFO_COUNT)
  39     return __hurd_fail (EIEIO);
  40
  41   return hbi.max_cpus;
  42 }
  43
  44 /* Return the number of processors currently available on the system. */
  45 int
  46 __get_nprocs ()
  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
  62 /* Return the number of physical pages on the system. */
  63 long int
  64 __get_phys_pages ()
  65 {
  66   struct host_basic_info hbi;
  67   kern_return_t err;
  68   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  69
  70   err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
  71                      (host_info_t) &hbi, &cnt);
  72   if (err)
  73     return __hurd_fail (err);
  74   else if (cnt != HOST_BASIC_INFO_COUNT)
  75     return __hurd_fail (EIEIO);
  76
  77   return hbi.memory_size / __vm_page_size;
  78 }
  79
  80 /* Return the number of available physical pages */
  81 long int
  82 __get_avphys_pages ()
  83 {
  84   vm_statistics_data_t vs;
  85   kern_return_t err;
  86
  87 #ifdef HOST_VM_INFO
  88   {
  89     mach_msg_type_number_t count = HOST_VM_INFO_COUNT;
  90     err = __host_info (__mach_host_self (), HOST_VM_INFO,
  91                        (host_info_t) &vs, &count);
  92     if (!err && count < HOST_VM_INFO_COUNT)
  93       err = EGRATUITOUS;
  94   }
  95 #else
  96   err = __vm_statistics (__mach_task_self (), &vs);
  97 #endif
  98   if (err)
  99     return __hurd_fail (err);
 100
 101   return vs.free_count;
 102 }