--- a/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp	Thu Jan 23 14:47:23 2014 +0100
+++ b/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp	Mon Jan 27 13:14:53 2014 +0100
@@ -173,6 +173,26 @@
   return lgrp_spaces()->at(i)->space()->capacity_in_bytes();
 }
 
+size_t MutableNUMASpace::tlab_used(Thread *thr) const {
+  // Please see the comments for tlab_capacity().
+  guarantee(thr != NULL, "No thread");
+  int lgrp_id = thr->lgrp_id();
+  if (lgrp_id == -1) {
+    if (lgrp_spaces()->length() > 0) {
+      return (used_in_bytes()) / lgrp_spaces()->length();
+    } else {
+      assert(false, "There should be at least one locality group");
+      return 0;
+    }
+  }
+  int i = lgrp_spaces()->find(&lgrp_id, LGRPSpace::equals);
+  if (i == -1) {
+    return 0;
+  }
+  return lgrp_spaces()->at(i)->space()->used_in_bytes();
+}
+
+
 size_t MutableNUMASpace::unsafe_max_tlab_alloc(Thread *thr) const {
   // Please see the comments for tlab_capacity().
   guarantee(thr != NULL, "No thread");