X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fphysmem.c;h=4b532e1a083db6236548a9093493049a3c80f27f;hb=278d609ead8d065b4c4a94705b8fd127c3df367a;hp=4219c7011be2f2e0213b692f3c6c3ed9f9c4e92d;hpb=d774ba63aadfdf261e8b4b95f05d69948ad1b806;p=gnulib.git
diff --git a/lib/physmem.c b/lib/physmem.c
index 4219c7011..4b532e1a0 100644
--- a/lib/physmem.c
+++ b/lib/physmem.c
@@ -1,10 +1,12 @@
/* Calculate the size of physical memory.
- Copyright 2000, 2001 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 2000, 2001, 2003, 2005, 2006 Free Software
+ Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,31 +14,75 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see . */
/* Written by Paul Eggert. */
-#if HAVE_CONFIG_H
-# include
-#endif
+#include
#include "physmem.h"
-#if HAVE_UNISTD_H
-# include
-#endif
+#include
#if HAVE_SYS_PSTAT_H
# include
#endif
+#if HAVE_SYS_SYSMP_H
+# include
+#endif
+
+#if HAVE_SYS_SYSINFO_H && HAVE_MACHINE_HAL_SYSINFO_H
+# include
+# include
+#endif
+
+#if HAVE_SYS_TABLE_H
+# include
+#endif
+
+#include
+
+#if HAVE_SYS_PARAM_H
+# include
+#endif
+
+#if HAVE_SYS_SYSCTL_H
+# include
+#endif
+
+#if HAVE_SYS_SYSTEMCFG_H
+# include
+#endif
+
+#ifdef _WIN32
+# define WIN32_LEAN_AND_MEAN
+# include
+/* MEMORYSTATUSEX is missing from older windows headers, so define
+ a local replacement. */
+typedef struct
+{
+ DWORD dwLength;
+ DWORD dwMemoryLoad;
+ DWORDLONG ullTotalPhys;
+ DWORDLONG ullAvailPhys;
+ DWORDLONG ullTotalPageFile;
+ DWORDLONG ullAvailPageFile;
+ DWORDLONG ullTotalVirtual;
+ DWORDLONG ullAvailVirtual;
+ DWORDLONG ullAvailExtendedVirtual;
+} lMEMORYSTATUSEX;
+typedef WINBOOL (WINAPI *PFN_MS_EX) (lMEMORYSTATUSEX*);
+#endif
+
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
+
/* Return the total amount of physical memory. */
double
physmem_total (void)
{
#if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE
- {
+ { /* This works on linux-gnu, solaris2 and cygwin. */
double pages = sysconf (_SC_PHYS_PAGES);
double pagesize = sysconf (_SC_PAGESIZE);
if (0 <= pages && 0 <= pagesize)
@@ -45,7 +91,7 @@ physmem_total (void)
#endif
#if HAVE_PSTAT_GETSTATIC
- {
+ { /* This works on hpux11. */
struct pst_static pss;
if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0))
{
@@ -57,6 +103,80 @@ physmem_total (void)
}
#endif
+#if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE
+ { /* This works on irix6. */
+ struct rminfo realmem;
+ if (sysmp (MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0)
+ {
+ double pagesize = sysconf (_SC_PAGESIZE);
+ double pages = realmem.physmem;
+ if (0 <= pages && 0 <= pagesize)
+ return pages * pagesize;
+ }
+ }
+#endif
+
+#if HAVE_GETSYSINFO && defined GSI_PHYSMEM
+ { /* This works on Tru64 UNIX V4/5. */
+ int physmem;
+
+ if (getsysinfo (GSI_PHYSMEM, (caddr_t) &physmem, sizeof (physmem),
+ NULL, NULL, NULL) == 1)
+ {
+ double kbytes = physmem;
+
+ if (0 <= kbytes)
+ return kbytes * 1024.0;
+ }
+ }
+#endif
+
+#if HAVE_SYSCTL && defined HW_PHYSMEM
+ { /* This works on *bsd and darwin. */
+ unsigned int physmem;
+ size_t len = sizeof physmem;
+ static int mib[2] = { CTL_HW, HW_PHYSMEM };
+
+ if (sysctl (mib, ARRAY_SIZE (mib), &physmem, &len, NULL, 0) == 0
+ && len == sizeof (physmem))
+ return (double) physmem;
+ }
+#endif
+
+#if HAVE__SYSTEM_CONFIGURATION
+ /* This works on AIX. */
+ return _system_configuration.physmem;
+#endif
+
+#if defined _WIN32
+ { /* this works on windows */
+ PFN_MS_EX pfnex;
+ HMODULE h = GetModuleHandle ("kernel32.dll");
+
+ if (!h)
+ return 0.0;
+
+ /* Use GlobalMemoryStatusEx if available. */
+ if ((pfnex = (PFN_MS_EX) GetProcAddress (h, "GlobalMemoryStatusEx")))
+ {
+ lMEMORYSTATUSEX lms_ex;
+ lms_ex.dwLength = sizeof lms_ex;
+ if (!pfnex (&lms_ex))
+ return 0.0;
+ return (double) lms_ex.ullTotalPhys;
+ }
+
+ /* Fall back to GlobalMemoryStatus which is always available.
+ but returns wrong results for physical memory > 4GB. */
+ else
+ {
+ MEMORYSTATUS ms;
+ GlobalMemoryStatus (&ms);
+ return (double) ms.dwTotalPhys;
+ }
+ }
+#endif
+
/* Guess 64 MB. It's probably an older host, so guess small. */
return 64 * 1024 * 1024;
}
@@ -66,7 +186,7 @@ double
physmem_available (void)
{
#if defined _SC_AVPHYS_PAGES && defined _SC_PAGESIZE
- {
+ { /* This works on linux-gnu, solaris2 and cygwin. */
double pages = sysconf (_SC_AVPHYS_PAGES);
double pagesize = sysconf (_SC_PAGESIZE);
if (0 <= pages && 0 <= pagesize)
@@ -75,7 +195,7 @@ physmem_available (void)
#endif
#if HAVE_PSTAT_GETSTATIC && HAVE_PSTAT_GETDYNAMIC
- {
+ { /* This works on hpux11. */
struct pst_static pss;
struct pst_dynamic psd;
if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0)
@@ -89,6 +209,96 @@ physmem_available (void)
}
#endif
+#if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE
+ { /* This works on irix6. */
+ struct rminfo realmem;
+ if (sysmp (MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0)
+ {
+ double pagesize = sysconf (_SC_PAGESIZE);
+ double pages = realmem.availrmem;
+ if (0 <= pages && 0 <= pagesize)
+ return pages * pagesize;
+ }
+ }
+#endif
+
+#if HAVE_TABLE && defined TBL_VMSTATS
+ { /* This works on Tru64 UNIX V4/5. */
+ struct tbl_vmstats vmstats;
+
+ if (table (TBL_VMSTATS, 0, &vmstats, 1, sizeof (vmstats)) == 1)
+ {
+ double pages = vmstats.free_count;
+ double pagesize = vmstats.pagesize;
+
+ if (0 <= pages && 0 <= pagesize)
+ return pages * pagesize;
+ }
+ }
+#endif
+
+#if HAVE_SYSCTL && defined HW_USERMEM
+ { /* This works on *bsd and darwin. */
+ unsigned int usermem;
+ size_t len = sizeof usermem;
+ static int mib[2] = { CTL_HW, HW_USERMEM };
+
+ if (sysctl (mib, ARRAY_SIZE (mib), &usermem, &len, NULL, 0) == 0
+ && len == sizeof (usermem))
+ return (double) usermem;
+ }
+#endif
+
+#if defined _WIN32
+ { /* this works on windows */
+ PFN_MS_EX pfnex;
+ HMODULE h = GetModuleHandle ("kernel32.dll");
+
+ if (!h)
+ return 0.0;
+
+ /* Use GlobalMemoryStatusEx if available. */
+ if ((pfnex = (PFN_MS_EX) GetProcAddress (h, "GlobalMemoryStatusEx")))
+ {
+ lMEMORYSTATUSEX lms_ex;
+ lms_ex.dwLength = sizeof lms_ex;
+ if (!pfnex (&lms_ex))
+ return 0.0;
+ return (double) lms_ex.ullAvailPhys;
+ }
+
+ /* Fall back to GlobalMemoryStatus which is always available.
+ but returns wrong results for physical memory > 4GB */
+ else
+ {
+ MEMORYSTATUS ms;
+ GlobalMemoryStatus (&ms);
+ return (double) ms.dwAvailPhys;
+ }
+ }
+#endif
+
/* Guess 25% of physical memory. */
return physmem_total () / 4;
}
+
+
+#if DEBUG
+
+# include
+# include
+
+int
+main (void)
+{
+ printf ("%12.f %12.f\n", physmem_total (), physmem_available ());
+ exit (0);
+}
+
+#endif /* DEBUG */
+
+/*
+Local Variables:
+compile-command: "gcc -DDEBUG -g -O -Wall -W physmem.c"
+End:
+*/