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/*-----------------------------------------------------------------------------------*/
/* INRIA 2005 */
/* Allan CORNET */
/* References
http://nixdoc.net/man-pages/Tru64/man2/getsysinfo.2.html
http://www.opensource.apple.com/darwinsource/projects/other/gccfast-1621.1/libiberty/physmem.c
http://lists.gnu.org/archive/html/bug-gnulib/2003-08/msg00102.html
*/
#include "getmemory.h"
int getfreememory()
{
#define kooctet 1024
#undef MEMOK
#if defined(WIN32)
{
#define MEMOK 1
MEMORYSTATUS stat;
GlobalMemoryStatus (&stat);
return stat.dwAvailPhys/kooctet;
}
#endif
#if defined(hpux)
#define MEMOK 1
{
struct pst_static pst;
/* pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0);
memorysizeKO=(pst.psd_free)/kooctet;*/
return 0;
}
#endif
#if defined(__APPLE__)
#define MEMOK 1
{
vm_statistics_data_t page_info;
vm_size_t pagesize;
mach_msg_type_number_t count;
kern_return_t kret;
pagesize = 0;
kret = host_page_size (mach_host_self(), &pagesize);
count = HOST_VM_INFO_COUNT;
kret = host_statistics (mach_host_self(), HOST_VM_INFO,(host_info_t)&page_info, &count);
return page_info.free_count*pagesize / 1024;
}
#endif
#if HAVE_TABLE && defined TBL_VMSTATS
#define MEMOK 1
{ /* 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;
else
return 0;
}
}
#endif
#ifndef MEMOK
/* Linux ,Solaris and others assumed*/
return (sysconf(_SC_AVPHYS_PAGES)*sysconf(_SC_PAGESIZE))/kooctet;
#endif
}
/*-----------------------------------------------------------------------------------*/
int getmemorysize()
{
#define kooctet 1024
#undef MEMOK
#if defined(WIN32)
#define MEMOK 1
{
MEMORYSTATUS stat;
GlobalMemoryStatus (&stat);
return stat.dwTotalPhys/kooctet;
}
#endif
#if defined(hpux)
#define MEMOK 1
{
struct pst_static pst;
pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0);
return (pst.physical_memory)/kooctet;
}
#endif
#if defined(__APPLE__)
#define MEMOK 1
{
size_t len;
int total;
int mib[2];
mib[0] = CTL_HW;
mib[1] = HW_PHYSMEM;
len = sizeof (total);
sysctl(mib, 2, &total, &len, NULL, 0);
return total/1024;
}
#endif
#if HAVE_GETSYSINFO && defined GSI_PHYSMEM
#define MEMOK 1
{ /* 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;
else
return 0;
}
}
#endif
#ifndef MEMOK
/* Linux ,Solaris and others */
return (sysconf(_SC_PHYS_PAGES)*sysconf(_SC_PAGESIZE))/kooctet;
#endif
}
/*-----------------------------------------------------------------------------------*/
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