1 /* System dependent pieces of sysconf; Mach version
2 Copyright (C) 1996-2021 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
__get_nprocs_conf(void)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)
weak_alias(__get_nprocs_conf,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)
weak_alias(__get_nprocs,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
__get_phys_pages(void)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)
weak_alias(__get_phys_pages,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)
116