[Assorted-commits] SF.net SVN: assorted: [390] cpp-commons/trunk/src/commons/region.h

[<yan...@us...>]

Revision: 390
          http://assorted.svn.sourceforge.net/assorted/?rev=390&view=rev
Author:   yangzhang
Date:     2008-02-12 08:45:07 -0800 (Tue, 12 Feb 2008)

Log Message:
-----------
implemented max_size

Modified Paths:
--------------
    cpp-commons/trunk/src/commons/region.h

Modified: cpp-commons/trunk/src/commons/region.h
===================================================================
--- cpp-commons/trunk/src/commons/region.h	2008-02-12 16:35:02 UTC (rev 389)
+++ cpp-commons/trunk/src/commons/region.h	2008-02-12 16:45:07 UTC (rev 390)
@@ -8,6 +8,8 @@
 namespace commons
 {
 
+  using namespace std;
+
   /**
    * Default chunk size is 100MB.
    */
@@ -121,10 +123,13 @@
     ~region_alloc() throw() { region->decref(); }
 
     /**
-     * Return maximum number of elements that can be allocated. Throws an
-     * exception.
+     * Return maximum number of elements that can be allocated. Simply return
+     * the size based on the size of memory.
      */
-    size_type max_size() const throw() { throw exception(); }
+    size_type max_size() const throw()
+    {
+      return numeric_limits<size_t>::max() / sizeof(T);
+    }
 
     /**
      * Allocate (but don't initialize) num elements of type T.


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