MonetDB: Jun2010 - Detect memory properly on Darwin/OSX systems

[Fabian Groffen]

Changeset: e3577bc93042 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=e3577bc93042
Modified Files:
        MonetDB/src/gdk/gdk_system.mx
Branch: Jun2010
Log Message:

Detect memory properly on Darwin/OSX systems


diffs (25 lines):

diff -r 89070599e2d6 -r e3577bc93042 MonetDB/src/gdk/gdk_system.mx
--- a/MonetDB/src/gdk/gdk_system.mx     Tue Jun 29 14:50:44 2010 +0200
+++ b/MonetDB/src/gdk/gdk_system.mx     Tue Jun 29 15:02:54 2010 +0200
@@ -372,7 +372,20 @@
 #  if defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES)
        _MT_npages = sysconf(_SC_PHYS_PAGES);
 #  else
-#   error "don't know how to get the amount of physical memory for your OS"
+#   if defined(HAVE_SYS_SYSCTL_H) && defined(HW_MEMSIZE)
+       {
+               int mib[2] = { CTL_HW, HW_MEMSIZE };
+               unsigned int namelen = sizeof(mib) / sizeof(mib[0]);
+               uint64_t size;
+               size_t len = sizeof(size);
+
+               if (sysctl(mib, namelen, &size, &len, NULL, 0) >= 0) {
+                       _MT_npages = size / _MT_pagesize;
+               }
+       }
+#   else
+#    error "don't know how to get the amount of physical memory for your OS"
+#   endif /* sysctl */
 #  endif /* sysconf */
 # endif        /* GlobalMemoryStatus */
 #endif /* GlobalMemoryStatusEx */
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