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4938384a | 1 | /* Calculate the size of physical memory. |
192cbe66 | 2 | Copyright 2000, 2001, 2003 Free Software Foundation, Inc. |
4938384a DD |
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 | ||
192cbe66 | 18 | /* Written by Paul Eggert and Jim Meyering. */ |
4938384a DD |
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 | ||
192cbe66 DD |
32 | #if HAVE_SYS_SYSMP_H |
33 | #include <sys/sysmp.h> | |
34 | #endif | |
35 | ||
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 | ||
45 | #include "libiberty.h" | |
46 | ||
4938384a DD |
47 | /* Return the total amount of physical memory. */ |
48 | double | |
900d2082 | 49 | physmem_total () |
4938384a DD |
50 | { |
51 | #if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE | |
52 | { | |
53 | double pages = sysconf (_SC_PHYS_PAGES); | |
54 | double pagesize = sysconf (_SC_PAGESIZE); | |
55 | if (0 <= pages && 0 <= pagesize) | |
56 | return pages * pagesize; | |
57 | } | |
58 | #endif | |
59 | ||
60 | #if HAVE_PSTAT_GETSTATIC | |
192cbe66 | 61 | { /* This works on hpux11. */ |
4938384a DD |
62 | struct pst_static pss; |
63 | if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0)) | |
64 | { | |
65 | double pages = pss.physical_memory; | |
66 | double pagesize = pss.page_size; | |
67 | if (0 <= pages && 0 <= pagesize) | |
68 | return pages * pagesize; | |
69 | } | |
70 | } | |
71 | #endif | |
72 | ||
192cbe66 DD |
73 | #if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE |
74 | { /* This works on irix6. */ | |
75 | struct rminfo realmem; | |
76 | if (sysmp(MP_SAGET, MPSA_RMINFO, &realmem, sizeof(realmem)) == 0) | |
77 | { | |
78 | double pagesize = sysconf (_SC_PAGESIZE); | |
79 | double pages = realmem.physmem; | |
80 | if (0 <= pages && 0 <= pagesize) | |
81 | return pages * pagesize; | |
82 | } | |
83 | } | |
84 | #endif | |
85 | ||
86 | #if HAVE_GETSYSINFO | |
87 | { /* This works on Tru64 UNIX V4/5. */ | |
88 | int physmem; | |
89 | ||
90 | if (getsysinfo (GSI_PHYSMEM, (caddr_t) &physmem, sizeof (physmem), | |
91 | NULL, NULL, NULL) == 1) | |
92 | { | |
93 | double kbytes = physmem; | |
94 | ||
95 | if (0 <= kbytes) | |
96 | return kbytes * 1024.0; | |
97 | } | |
98 | } | |
99 | #endif | |
100 | ||
4938384a DD |
101 | /* Return 0 if we can't determine the value. */ |
102 | return 0; | |
103 | } | |
104 | ||
105 | /* Return the amount of physical memory available. */ | |
106 | double | |
900d2082 | 107 | physmem_available () |
4938384a DD |
108 | { |
109 | #if defined _SC_AVPHYS_PAGES && defined _SC_PAGESIZE | |
110 | { | |
111 | double pages = sysconf (_SC_AVPHYS_PAGES); | |
112 | double pagesize = sysconf (_SC_PAGESIZE); | |
113 | if (0 <= pages && 0 <= pagesize) | |
114 | return pages * pagesize; | |
115 | } | |
116 | #endif | |
117 | ||
118 | #if HAVE_PSTAT_GETSTATIC && HAVE_PSTAT_GETDYNAMIC | |
192cbe66 | 119 | { /* This works on hpux11. */ |
4938384a DD |
120 | struct pst_static pss; |
121 | struct pst_dynamic psd; | |
122 | if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0) | |
123 | && 0 <= pstat_getdynamic (&psd, sizeof psd, 1, 0)) | |
124 | { | |
125 | double pages = psd.psd_free; | |
126 | double pagesize = pss.page_size; | |
127 | if (0 <= pages && 0 <= pagesize) | |
128 | return pages * pagesize; | |
129 | } | |
130 | } | |
131 | #endif | |
132 | ||
192cbe66 DD |
133 | #if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE |
134 | { /* This works on irix6. */ | |
135 | struct rminfo realmem; | |
136 | if (sysmp(MP_SAGET, MPSA_RMINFO, &realmem, sizeof(realmem)) == 0) | |
137 | { | |
138 | double pagesize = sysconf (_SC_PAGESIZE); | |
139 | double pages = realmem.availrmem; | |
140 | if (0 <= pages && 0 <= pagesize) | |
141 | return pages * pagesize; | |
142 | } | |
143 | } | |
144 | #endif | |
145 | ||
146 | #if HAVE_TABLE && HAVE_SYS_TABLE_H | |
147 | { /* This works on Tru64 UNIX V4/5. */ | |
148 | struct tbl_vmstats vmstats; | |
149 | ||
150 | if (table (TBL_VMSTATS, 0, &vmstats, 1, sizeof (vmstats)) == 1) | |
151 | { | |
152 | double pages = vmstats.free_count; | |
153 | double pagesize = vmstats.pagesize; | |
154 | ||
155 | if (0 <= pages && 0 <= pagesize) | |
156 | return pages * pagesize; | |
157 | } | |
158 | } | |
159 | #endif | |
160 | ||
4938384a DD |
161 | /* Guess 25% of physical memory. */ |
162 | return physmem_total () / 4; | |
163 | } | |
192cbe66 DD |
164 | |
165 | ||
166 | #if DEBUG | |
167 | ||
168 | # include <stdio.h> | |
169 | # include <stdlib.h> | |
170 | ||
171 | int | |
172 | main () | |
173 | { | |
174 | printf ("%12.f %12.f\n", physmem_total (), physmem_available ()); | |
175 | exit (0); | |
176 | } | |
177 | ||
178 | #endif /* DEBUG */ | |
179 | ||
180 | /* | |
181 | Local Variables: | |
182 | compile-command: "gcc -DDEBUG -DHAVE_CONFIG_H -I.. -g -O -Wall -W physmem.c" | |
183 | End: | |
184 | */ |