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a354191e | 1 | /* Calculate the size of physical memory. |
64c7e556 | 2 | Copyright 2000, 2001, 2003 Free Software Foundation, Inc. |
a354191e KG |
3 | |
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2, or (at your option) | |
7 | any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software Foundation, | |
16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
17 | ||
64c7e556 | 18 | /* Written by Paul Eggert and Jim Meyering. */ |
a354191e KG |
19 | |
20 | #if HAVE_CONFIG_H | |
21 | # include <config.h> | |
22 | #endif | |
23 | ||
24 | #if HAVE_UNISTD_H | |
25 | # include <unistd.h> | |
26 | #endif | |
27 | ||
28 | #if HAVE_SYS_PSTAT_H | |
29 | # include <sys/pstat.h> | |
30 | #endif | |
31 | ||
64c7e556 KG |
32 | #if HAVE_SYS_SYSMP_H |
33 | #include <sys/sysmp.h> | |
34 | #endif | |
35 | ||
4a06f7f2 RO |
36 | #if HAVE_SYS_SYSINFO_H && HAVE_MACHINE_HAL_SYSINFO_H |
37 | # include <sys/sysinfo.h> | |
38 | # include <machine/hal_sysinfo.h> | |
39 | #endif | |
40 | ||
41 | #if HAVE_SYS_TABLE_H | |
42 | # include <sys/table.h> | |
43 | #endif | |
44 | ||
170230b7 KG |
45 | #include <sys/types.h> |
46 | ||
47 | #if HAVE_SYS_PARAM_H | |
48 | #include <sys/param.h> | |
49 | #endif | |
50 | ||
51 | #if HAVE_SYS_SYSCTL_H | |
52 | #include <sys/sysctl.h> | |
53 | #endif | |
54 | ||
64c7e556 KG |
55 | #include "libiberty.h" |
56 | ||
a354191e KG |
57 | /* Return the total amount of physical memory. */ |
58 | double | |
e9019af6 | 59 | physmem_total () |
a354191e KG |
60 | { |
61 | #if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE | |
62 | { | |
63 | double pages = sysconf (_SC_PHYS_PAGES); | |
64 | double pagesize = sysconf (_SC_PAGESIZE); | |
65 | if (0 <= pages && 0 <= pagesize) | |
66 | return pages * pagesize; | |
67 | } | |
68 | #endif | |
69 | ||
70 | #if HAVE_PSTAT_GETSTATIC | |
64c7e556 | 71 | { /* This works on hpux11. */ |
a354191e KG |
72 | struct pst_static pss; |
73 | if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0)) | |
74 | { | |
75 | double pages = pss.physical_memory; | |
76 | double pagesize = pss.page_size; | |
77 | if (0 <= pages && 0 <= pagesize) | |
78 | return pages * pagesize; | |
79 | } | |
80 | } | |
81 | #endif | |
82 | ||
64c7e556 KG |
83 | #if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE |
84 | { /* This works on irix6. */ | |
85 | struct rminfo realmem; | |
86 | if (sysmp(MP_SAGET, MPSA_RMINFO, &realmem, sizeof(realmem)) == 0) | |
87 | { | |
88 | double pagesize = sysconf (_SC_PAGESIZE); | |
89 | double pages = realmem.physmem; | |
90 | if (0 <= pages && 0 <= pagesize) | |
91 | return pages * pagesize; | |
92 | } | |
93 | } | |
94 | #endif | |
95 | ||
4a06f7f2 RO |
96 | #if HAVE_GETSYSINFO |
97 | { /* This works on Tru64 UNIX V4/5. */ | |
98 | int physmem; | |
99 | ||
100 | if (getsysinfo (GSI_PHYSMEM, (caddr_t) &physmem, sizeof (physmem), | |
101 | NULL, NULL, NULL) == 1) | |
102 | { | |
103 | double kbytes = physmem; | |
104 | ||
105 | if (0 <= kbytes) | |
106 | return kbytes * 1024.0; | |
107 | } | |
108 | } | |
109 | #endif | |
110 | ||
170230b7 KG |
111 | #if HAVE_SYSCTL && defined HW_PHYSMEM |
112 | { /* This works on *bsd and darwin. */ | |
113 | unsigned int physmem; | |
114 | size_t len = sizeof(physmem); | |
115 | static int mib[2] = {CTL_HW, HW_PHYSMEM}; | |
116 | ||
117 | if (sysctl(mib, ARRAY_SIZE(mib), &physmem, &len, NULL, 0) == 0 | |
118 | && len == sizeof (physmem)) | |
119 | return (double)physmem; | |
120 | } | |
121 | #endif | |
122 | ||
a354191e KG |
123 | /* Return 0 if we can't determine the value. */ |
124 | return 0; | |
125 | } | |
126 | ||
127 | /* Return the amount of physical memory available. */ | |
128 | double | |
e9019af6 | 129 | physmem_available () |
a354191e KG |
130 | { |
131 | #if defined _SC_AVPHYS_PAGES && defined _SC_PAGESIZE | |
132 | { | |
133 | double pages = sysconf (_SC_AVPHYS_PAGES); | |
134 | double pagesize = sysconf (_SC_PAGESIZE); | |
135 | if (0 <= pages && 0 <= pagesize) | |
136 | return pages * pagesize; | |
137 | } | |
138 | #endif | |
139 | ||
140 | #if HAVE_PSTAT_GETSTATIC && HAVE_PSTAT_GETDYNAMIC | |
64c7e556 | 141 | { /* This works on hpux11. */ |
a354191e KG |
142 | struct pst_static pss; |
143 | struct pst_dynamic psd; | |
144 | if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0) | |
145 | && 0 <= pstat_getdynamic (&psd, sizeof psd, 1, 0)) | |
146 | { | |
147 | double pages = psd.psd_free; | |
148 | double pagesize = pss.page_size; | |
149 | if (0 <= pages && 0 <= pagesize) | |
150 | return pages * pagesize; | |
151 | } | |
152 | } | |
153 | #endif | |
154 | ||
64c7e556 KG |
155 | #if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE |
156 | { /* This works on irix6. */ | |
157 | struct rminfo realmem; | |
158 | if (sysmp(MP_SAGET, MPSA_RMINFO, &realmem, sizeof(realmem)) == 0) | |
159 | { | |
160 | double pagesize = sysconf (_SC_PAGESIZE); | |
161 | double pages = realmem.availrmem; | |
162 | if (0 <= pages && 0 <= pagesize) | |
163 | return pages * pagesize; | |
164 | } | |
165 | } | |
166 | #endif | |
167 | ||
4a06f7f2 RO |
168 | #if HAVE_TABLE && HAVE_SYS_TABLE_H |
169 | { /* This works on Tru64 UNIX V4/5. */ | |
170 | struct tbl_vmstats vmstats; | |
171 | ||
172 | if (table (TBL_VMSTATS, 0, &vmstats, 1, sizeof (vmstats)) == 1) | |
173 | { | |
174 | double pages = vmstats.free_count; | |
175 | double pagesize = vmstats.pagesize; | |
176 | ||
177 | if (0 <= pages && 0 <= pagesize) | |
178 | return pages * pagesize; | |
179 | } | |
180 | } | |
181 | #endif | |
182 | ||
170230b7 KG |
183 | #if HAVE_SYSCTL && defined HW_USERMEM |
184 | { /* This works on *bsd and darwin. */ | |
185 | unsigned int usermem; | |
186 | size_t len = sizeof(usermem); | |
187 | static int mib[2] = {CTL_HW, HW_USERMEM}; | |
188 | ||
189 | if (sysctl(mib, ARRAY_SIZE(mib), &usermem, &len, NULL, 0) == 0 | |
190 | && len == sizeof (usermem)) | |
191 | return (double)usermem; | |
192 | } | |
193 | #endif | |
194 | ||
a354191e KG |
195 | /* Guess 25% of physical memory. */ |
196 | return physmem_total () / 4; | |
197 | } | |
64c7e556 KG |
198 | |
199 | ||
200 | #if DEBUG | |
201 | ||
202 | # include <stdio.h> | |
203 | # include <stdlib.h> | |
204 | ||
205 | int | |
206 | main () | |
207 | { | |
208 | printf ("%12.f %12.f\n", physmem_total (), physmem_available ()); | |
209 | exit (0); | |
210 | } | |
211 | ||
212 | #endif /* DEBUG */ | |
213 | ||
214 | /* | |
215 | Local Variables: | |
216 | compile-command: "gcc -DDEBUG -DHAVE_CONFIG_H -I.. -g -O -Wall -W physmem.c" | |
217 | End: | |
218 | */ |