sysdeps/mach/getsysstats.c

   1 /* System dependent pieces of sysconf; Mach version
   2    Copyright (C) 1996-2022 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    <https://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 libc_hidden_def (__get_nprocs_conf)
  43 weak_alias (__get_nprocs_conf, get_nprocs_conf)
  44
  45 /* Return the number of processors currently available on the system. */
  46 int
  47 __get_nprocs (void)
  48 {
  49   struct host_basic_info hbi;
  50   kern_return_t err;
  51   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  52
  53   err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
  54                      (host_info_t) &hbi, &cnt);
  55   if (err)
  56     return __hurd_fail (err);
  57   else if (cnt != HOST_BASIC_INFO_COUNT)
  58     return __hurd_fail (EIEIO);
  59
  60   return hbi.avail_cpus;
  61 }
  62 libc_hidden_def (__get_nprocs)
  63 weak_alias (__get_nprocs, get_nprocs)
  64
  65 int
  66 __get_nprocs_sched (void)
  67 {
  68   return __get_nprocs ();
  69 }
  70
  71 /* Return the number of physical pages on the system. */
  72 long int
  73 __get_phys_pages (void)
  74 {
  75   struct host_basic_info hbi;
  76   kern_return_t err;
  77   mach_msg_type_number_t cnt = HOST_BASIC_INFO_COUNT;
  78
  79   err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
  80                      (host_info_t) &hbi, &cnt);
  81   if (err)
  82     return __hurd_fail (err);
  83   else if (cnt != HOST_BASIC_INFO_COUNT)
  84     return __hurd_fail (EIEIO);
  85
  86   return hbi.memory_size / __vm_page_size;
  87 }
  88 libc_hidden_def (__get_phys_pages)
  89 weak_alias (__get_phys_pages, get_phys_pages)
  90
  91 /* Return the number of available physical pages */
  92 long int
  93 __get_avphys_pages (void)
  94 {
  95   vm_statistics_data_t vs;
  96   kern_return_t err;
  97
  98 #ifdef HOST_VM_INFO
  99   {
 100     mach_msg_type_number_t count = HOST_VM_INFO_COUNT;
 101     err = __host_info (__mach_host_self (), HOST_VM_INFO,
 102                        (host_info_t) &vs, &count);
 103     if (!err && count < HOST_VM_INFO_COUNT)
 104       err = EGRATUITOUS;
 105   }
 106 #else
 107   err = __vm_statistics (__mach_task_self (), &vs);
 108 #endif
 109   if (err)
 110     return __hurd_fail (err);
 111
 112   return vs.free_count;
 113 }
 114 libc_hidden_def (__get_avphys_pages)
 115 weak_alias (__get_avphys_pages, get_avphys_pages)