diff options
Diffstat (limited to 'lib/physmem.c')
| -rw-r--r-- | lib/physmem.c | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/lib/physmem.c b/lib/physmem.c index d0e252f1e..4219c7011 100644 --- a/lib/physmem.c +++ b/lib/physmem.c @@ -1,5 +1,5 @@ /* Calculate the size of physical memory. - Copyright 2000 Free Software Foundation, Inc. + Copyright 2000, 2001 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 @@ -27,15 +27,34 @@ # include <unistd.h> #endif +#if HAVE_SYS_PSTAT_H +# include <sys/pstat.h> +#endif + /* Return the total amount of physical memory. */ double physmem_total (void) { #if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE - double pages = sysconf (_SC_PHYS_PAGES); - double pagesize = sysconf (_SC_PAGESIZE); - if (0 <= pages && 0 <= pagesize) - return pages * pagesize; + { + double pages = sysconf (_SC_PHYS_PAGES); + double pagesize = sysconf (_SC_PAGESIZE); + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } +#endif + +#if HAVE_PSTAT_GETSTATIC + { + struct pst_static pss; + if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0)) + { + double pages = pss.physical_memory; + double pagesize = pss.page_size; + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } + } #endif /* Guess 64 MB. It's probably an older host, so guess small. */ @@ -47,10 +66,27 @@ double physmem_available (void) { #if defined _SC_AVPHYS_PAGES && defined _SC_PAGESIZE - double pages = sysconf (_SC_AVPHYS_PAGES); - double pagesize = sysconf (_SC_PAGESIZE); - if (0 <= pages && 0 <= pagesize) - return pages * pagesize; + { + double pages = sysconf (_SC_AVPHYS_PAGES); + double pagesize = sysconf (_SC_PAGESIZE); + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } +#endif + +#if HAVE_PSTAT_GETSTATIC && HAVE_PSTAT_GETDYNAMIC + { + struct pst_static pss; + struct pst_dynamic psd; + if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0) + && 0 <= pstat_getdynamic (&psd, sizeof psd, 1, 0)) + { + double pages = psd.psd_free; + double pagesize = pss.page_size; + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } + } #endif /* Guess 25% of physical memory. */ |