| 1 |
|
/* Calculate the size of physical memory. |
| 2 |
– |
Copyright 2000, 2001, 2003 Free Software Foundation, Inc. |
| 2 |
|
|
| 3 |
< |
This program is free software; you can redistribute it and/or modify |
| 3 |
> |
Copyright (C) 2000, 2001, 2003, 2005, 2006 Free Software |
| 4 |
> |
Foundation, Inc. |
| 5 |
> |
|
| 6 |
> |
This program is free software: you can redistribute it and/or modify |
| 7 |
|
it under the terms of the GNU General Public License as published by |
| 8 |
< |
the Free Software Foundation; either version 2, or (at your option) |
| 9 |
< |
any later version. |
| 8 |
> |
the Free Software Foundation; either version 3 of the License, or |
| 9 |
> |
(at your option) any later version. |
| 10 |
|
|
| 11 |
|
This program is distributed in the hope that it will be useful, |
| 12 |
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
|
GNU General Public License for more details. |
| 15 |
|
|
| 16 |
|
You should have received a copy of the GNU General Public License |
| 17 |
< |
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 |
> |
along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 18 |
|
|
| 19 |
|
/* Written by Paul Eggert. */ |
| 20 |
|
|
| 21 |
|
#include "config.h" |
| 22 |
|
|
| 23 |
< |
#if HAVE_UNISTD_H |
| 23 |
< |
# include <unistd.h> |
| 24 |
< |
#endif |
| 23 |
> |
#include "physmem.h" |
| 24 |
|
|
| 25 |
+ |
#include <unistd.h> |
| 26 |
+ |
|
| 27 |
|
#if HAVE_SYS_PSTAT_H |
| 28 |
|
# include <sys/pstat.h> |
| 29 |
|
#endif |
| 75 |
|
typedef WINBOOL (WINAPI *PFN_MS_EX) (lMEMORYSTATUSEX*); |
| 76 |
|
#endif |
| 77 |
|
|
| 78 |
+ |
#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) |
| 79 |
+ |
|
| 80 |
|
/* Return the total amount of physical memory. */ |
| 81 |
< |
RealType |
| 82 |
< |
physmem_total () |
| 81 |
> |
double |
| 82 |
> |
physmem_total (void) |
| 83 |
|
{ |
| 84 |
|
#if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE |
| 85 |
|
{ /* This works on linux-gnu, solaris2 and cygwin. */ |
| 86 |
< |
RealType pages = sysconf (_SC_PHYS_PAGES); |
| 87 |
< |
RealType pagesize = sysconf (_SC_PAGESIZE); |
| 86 |
> |
double pages = sysconf (_SC_PHYS_PAGES); |
| 87 |
> |
double pagesize = sysconf (_SC_PAGESIZE); |
| 88 |
|
if (0 <= pages && 0 <= pagesize) |
| 89 |
|
return pages * pagesize; |
| 90 |
|
} |
| 95 |
|
struct pst_static pss; |
| 96 |
|
if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0)) |
| 97 |
|
{ |
| 98 |
< |
RealType pages = pss.physical_memory; |
| 99 |
< |
RealType pagesize = pss.page_size; |
| 98 |
> |
double pages = pss.physical_memory; |
| 99 |
> |
double pagesize = pss.page_size; |
| 100 |
|
if (0 <= pages && 0 <= pagesize) |
| 101 |
|
return pages * pagesize; |
| 102 |
|
} |
| 108 |
|
struct rminfo realmem; |
| 109 |
|
if (sysmp (MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0) |
| 110 |
|
{ |
| 111 |
< |
RealType pagesize = sysconf (_SC_PAGESIZE); |
| 112 |
< |
RealType pages = realmem.physmem; |
| 111 |
> |
double pagesize = sysconf (_SC_PAGESIZE); |
| 112 |
> |
double pages = realmem.physmem; |
| 113 |
|
if (0 <= pages && 0 <= pagesize) |
| 114 |
|
return pages * pagesize; |
| 115 |
|
} |
| 123 |
|
if (getsysinfo (GSI_PHYSMEM, (caddr_t) &physmem, sizeof (physmem), |
| 124 |
|
NULL, NULL, NULL) == 1) |
| 125 |
|
{ |
| 126 |
< |
RealType kbytes = physmem; |
| 126 |
> |
double kbytes = physmem; |
| 127 |
|
|
| 128 |
|
if (0 <= kbytes) |
| 129 |
|
return kbytes * 1024.0; |
| 137 |
|
size_t len = sizeof physmem; |
| 138 |
|
static int mib[2] = { CTL_HW, HW_PHYSMEM }; |
| 139 |
|
|
| 140 |
< |
if (sysctl (mib, 2, &physmem, &len, NULL, 0) == 0 |
| 140 |
> |
if (sysctl (mib, ARRAY_SIZE (mib), &physmem, &len, NULL, 0) == 0 |
| 141 |
|
&& len == sizeof (physmem)) |
| 142 |
< |
return (RealType) physmem; |
| 142 |
> |
return (double) physmem; |
| 143 |
|
} |
| 144 |
|
#endif |
| 145 |
|
|
| 163 |
|
lms_ex.dwLength = sizeof lms_ex; |
| 164 |
|
if (!pfnex (&lms_ex)) |
| 165 |
|
return 0.0; |
| 166 |
< |
return (RealType) lms_ex.ullTotalPhys; |
| 166 |
> |
return (double) lms_ex.ullTotalPhys; |
| 167 |
|
} |
| 168 |
|
|
| 169 |
|
/* Fall back to GlobalMemoryStatus which is always available. |
| 172 |
|
{ |
| 173 |
|
MEMORYSTATUS ms; |
| 174 |
|
GlobalMemoryStatus (&ms); |
| 175 |
< |
return (RealType) ms.dwTotalPhys; |
| 175 |
> |
return (double) ms.dwTotalPhys; |
| 176 |
|
} |
| 177 |
|
} |
| 178 |
|
#endif |
| 179 |
|
|
| 180 |
< |
/* Return 0 if we can't determine the value. */ |
| 181 |
< |
return 0; |
| 180 |
> |
/* Guess 64 MB. It's probably an older host, so guess small. */ |
| 181 |
> |
return 64 * 1024 * 1024; |
| 182 |
|
} |
| 183 |
|
|
| 184 |
|
/* Return the amount of physical memory available. */ |
| 185 |
< |
RealType |
| 186 |
< |
physmem_available () |
| 185 |
> |
double |
| 186 |
> |
physmem_available (void) |
| 187 |
|
{ |
| 188 |
|
#if defined _SC_AVPHYS_PAGES && defined _SC_PAGESIZE |
| 189 |
|
{ /* This works on linux-gnu, solaris2 and cygwin. */ |
| 190 |
< |
RealType pages = sysconf (_SC_AVPHYS_PAGES); |
| 191 |
< |
RealType pagesize = sysconf (_SC_PAGESIZE); |
| 190 |
> |
double pages = sysconf (_SC_AVPHYS_PAGES); |
| 191 |
> |
double pagesize = sysconf (_SC_PAGESIZE); |
| 192 |
|
if (0 <= pages && 0 <= pagesize) |
| 193 |
|
return pages * pagesize; |
| 194 |
|
} |
| 201 |
|
if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0) |
| 202 |
|
&& 0 <= pstat_getdynamic (&psd, sizeof psd, 1, 0)) |
| 203 |
|
{ |
| 204 |
< |
RealType pages = psd.psd_free; |
| 205 |
< |
RealType pagesize = pss.page_size; |
| 204 |
> |
double pages = psd.psd_free; |
| 205 |
> |
double pagesize = pss.page_size; |
| 206 |
|
if (0 <= pages && 0 <= pagesize) |
| 207 |
|
return pages * pagesize; |
| 208 |
|
} |
| 214 |
|
struct rminfo realmem; |
| 215 |
|
if (sysmp (MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0) |
| 216 |
|
{ |
| 217 |
< |
RealType pagesize = sysconf (_SC_PAGESIZE); |
| 218 |
< |
RealType pages = realmem.availrmem; |
| 217 |
> |
double pagesize = sysconf (_SC_PAGESIZE); |
| 218 |
> |
double pages = realmem.availrmem; |
| 219 |
|
if (0 <= pages && 0 <= pagesize) |
| 220 |
|
return pages * pagesize; |
| 221 |
|
} |
| 228 |
|
|
| 229 |
|
if (table (TBL_VMSTATS, 0, &vmstats, 1, sizeof (vmstats)) == 1) |
| 230 |
|
{ |
| 231 |
< |
RealType pages = vmstats.free_count; |
| 232 |
< |
RealType pagesize = vmstats.pagesize; |
| 231 |
> |
double pages = vmstats.free_count; |
| 232 |
> |
double pagesize = vmstats.pagesize; |
| 233 |
|
|
| 234 |
|
if (0 <= pages && 0 <= pagesize) |
| 235 |
|
return pages * pagesize; |
| 243 |
|
size_t len = sizeof usermem; |
| 244 |
|
static int mib[2] = { CTL_HW, HW_USERMEM }; |
| 245 |
|
|
| 246 |
< |
if (sysctl (mib, 2, &usermem, &len, NULL, 0) == 0 |
| 246 |
> |
if (sysctl (mib, ARRAY_SIZE (mib), &usermem, &len, NULL, 0) == 0 |
| 247 |
|
&& len == sizeof (usermem)) |
| 248 |
< |
return (RealType) usermem; |
| 248 |
> |
return (double) usermem; |
| 249 |
|
} |
| 250 |
|
#endif |
| 251 |
|
|
| 264 |
|
lms_ex.dwLength = sizeof lms_ex; |
| 265 |
|
if (!pfnex (&lms_ex)) |
| 266 |
|
return 0.0; |
| 267 |
< |
return (RealType) lms_ex.ullAvailPhys; |
| 267 |
> |
return (double) lms_ex.ullAvailPhys; |
| 268 |
|
} |
| 269 |
|
|
| 270 |
|
/* Fall back to GlobalMemoryStatus which is always available. |
| 273 |
|
{ |
| 274 |
|
MEMORYSTATUS ms; |
| 275 |
|
GlobalMemoryStatus (&ms); |
| 276 |
< |
return (RealType) ms.dwAvailPhys; |
| 276 |
> |
return (double) ms.dwAvailPhys; |
| 277 |
|
} |
| 278 |
|
} |
| 279 |
|
#endif |
