/* Calculate the size of physical memory.
- Copyright 2000, 2001, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2000-2019 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
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. */
+ Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
/* Written by Paul Eggert. */
#endif
#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
/* 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;
+ 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
/* Return the total amount of physical memory. */
double
-physmem_total ()
+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)
double pagesize = sysconf (_SC_PAGESIZE);
double pages = realmem.physmem;
if (0 <= pages && 0 <= pagesize)
- return pages * pagesize;
+ return pages * pagesize;
}
}
#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};
+ size_t len = sizeof physmem;
+ static int mib[2] = { CTL_HW, HW_PHYSMEM };
- if (sysctl(mib, ARRAY_SIZE(mib), &physmem, &len, NULL, 0) == 0
+ if (sysctl (mib, ARRAY_SIZE (mib), &physmem, &len, NULL, 0) == 0
&& len == sizeof (physmem))
- return (double)physmem;
+ return (double) physmem;
}
#endif
#if HAVE__SYSTEM_CONFIGURATION
- /* This works on AIX. */
+ /* This works on AIX 4.3.3+. */
return _system_configuration.physmem;
#endif
#if defined _WIN32
{ /* this works on windows */
- PFN_MS_EX pfnex;
- HMODULE h = GetModuleHandle("kernel32.dll");
+ PFN_MS_EX pfnex;
+ HMODULE h = GetModuleHandle ("kernel32.dll");
- if (!h)
+ if (!h)
return 0.0;
- /* Use GlobalMemoryStatusEx if available. */
+ /* 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;
+ return (double) lms_ex.ullTotalPhys;
}
/* Fall back to GlobalMemoryStatus which is always available.
- but returns wrong results for physical memory > 4GB. */
+ but returns wrong results for physical memory > 4GB. */
else
{
- MEMORYSTATUS ms;
- GlobalMemoryStatus (&ms);
- return (double)ms.dwTotalPhys;
+ MEMORYSTATUS ms;
+ GlobalMemoryStatus (&ms);
+ return (double) ms.dwTotalPhys;
}
- }
+ }
#endif
/* Return 0 if we can't determine the value. */
/* Return the amount of physical memory available. */
double
-physmem_available ()
+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)
double pagesize = sysconf (_SC_PAGESIZE);
double pages = realmem.availrmem;
if (0 <= pages && 0 <= pagesize)
- return pages * 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};
+ size_t len = sizeof usermem;
+ static int mib[2] = { CTL_HW, HW_USERMEM };
- if (sysctl(mib, ARRAY_SIZE(mib), &usermem, &len, NULL, 0) == 0
+ if (sysctl (mib, ARRAY_SIZE (mib), &usermem, &len, NULL, 0) == 0
&& len == sizeof (usermem))
- return (double)usermem;
+ return (double) usermem;
}
#endif
#if defined _WIN32
{ /* this works on windows */
- PFN_MS_EX pfnex;
+ PFN_MS_EX pfnex;
HMODULE h = GetModuleHandle ("kernel32.dll");
if (!h)
return 0.0;
- /* Use GlobalMemoryStatusEx if available. */
+ /* Use GlobalMemoryStatusEx if available. */
if ((pfnex = (PFN_MS_EX) GetProcAddress (h, "GlobalMemoryStatusEx")))
{
lMEMORYSTATUSEX lms_ex;
}
/* Fall back to GlobalMemoryStatus which is always available.
- but returns wrong results for physical memory > 4GB */
+ but returns wrong results for physical memory > 4GB */
else
{
MEMORYSTATUS ms;
GlobalMemoryStatus (&ms);
- return (double)ms.dwAvailPhys;
+ return (double) ms.dwAvailPhys;
}
}
#endif
# include <stdlib.h>
int
-main ()
+main (void)
{
printf ("%12.f %12.f\n", physmem_total (), physmem_available ());
exit (0);