Add Irix6 support to physmem.c.

(irix_sysget): New function.
(IRIX_SYSGET_TOTAL, IRIX_SYSGET_AVAILABLE): New macros.
(physmem_total, physmem_available): Use them.

1 files changed, 42 insertions, 2 deletions

diff --git a/lib/physmem.c b/lib/physmem.c
index 4219c7011..31436c993 100644
--- a/lib/physmem.c
+++ b/lib/physmem.c
@@ -1,5 +1,5 @@
 /* Calculate the size of physical memory.
-   Copyright 2000, 2001 Free Software Foundation, Inc.
+   Copyright 2000, 2001, 2003 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
@@ -15,7 +15,7 @@
    along with this program; if not, write to the Free Software Foundation,
    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
-/* Written by Paul Eggert.  */
+/* Written by Paul Eggert and Jim Meyering.  */
 
 #if HAVE_CONFIG_H
 # include <config.h>
@@ -31,6 +31,42 @@
 # include <sys/pstat.h>
 #endif
 
+#if HAVE_SYSGET && HAVE_SYS_SYSGET_H && HAVE_SYS_SYSINFO_H && SGT_COOKIE_INIT
+# include <sys/types.h>
+# include <sys/sysget.h>
+# include <sys/sysinfo.h>
+
+# define IRIX_SYSGET_TOTAL \
+    do { double tot; if (irix_sysget (&tot, NULL) == 0) return tot; } while (0)
+# define IRIX_SYSGET_AVAILABLE \
+    do { double fr; if (irix_sysget (NULL, &fr) == 0) return fr; } while (0)
+
+/* If TOTAL is non-NULL, set *TOTAL to the number of bytes of physical memory.
+   If AVAIL is non-NULL, set *AVAIL to the number of bytes of available memory.
+   Return nonzero immediately if sysget fails.
+   Otherwise, set the requested value(s) and return zero.  */
+static int
+irix_sysget (double *total, double *avail)
+{
+  nodeinfo_t buf;
+  sgt_cookie_t cookie;
+
+  SGT_COOKIE_INIT (&cookie);
+  if (sysget (SGT_NODE_INFO, (char *) &buf, sizeof buf, SGT_READ, &cookie)
+      != sizeof buf)
+    return 1;
+
+  if (total)
+    *total = buf.totalmem;
+  if (avail)
+    *avail = buf.freemem;
+  return 0;
+}
+#else
+# define IRIX_SYSGET_TOTAL
+# define IRIX_SYSGET_AVAILABLE
+#endif
+
 /* Return the total amount of physical memory.  */
 double
 physmem_total (void)
@@ -57,6 +93,8 @@ physmem_total (void)
   }
 #endif
 
+  IRIX_SYSGET_TOTAL;
+
   /* Guess 64 MB.  It's probably an older host, so guess small.  */
   return 64 * 1024 * 1024;
 }
@@ -89,6 +127,8 @@ physmem_available (void)
   }
 #endif
 
+  IRIX_SYSGET_AVAILABLE;
+
   /* Guess 25% of physical memory.  */
   return physmem_total () / 4;
 }