diff -r e2af886d540b -r 4bf3cbef0b3e src/share/vm/oops/methodOop.cpp
--- a/src/share/vm/oops/methodOop.cpp	Fri Jul 01 13:07:16 2011 -0700
+++ b/src/share/vm/oops/methodOop.cpp	Wed Jul 06 08:43:01 2011 -0700
@@ -49,6 +49,7 @@
 #include "runtime/relocator.hpp"
 #include "runtime/sharedRuntime.hpp"
 #include "runtime/signature.hpp"
+#include "utilities/quickSort.hpp"
 #include "utilities/xmlstream.hpp"
 
 
@@ -1207,41 +1208,6 @@
   if (WizardMode) signature()->print_symbol_on(st);
 }
 
-
-extern "C" {
-  static int method_compare(methodOop* a, methodOop* b) {
-    return (*a)->name()->fast_compare((*b)->name());
-  }
-
-  // Prevent qsort from reordering a previous valid sort by
-  // considering the address of the methodOops if two methods
-  // would otherwise compare as equal.  Required to preserve
-  // optimal access order in the shared archive.  Slower than
-  // method_compare, only used for shared archive creation.
-  static int method_compare_idempotent(methodOop* a, methodOop* b) {
-    int i = method_compare(a, b);
-    if (i != 0) return i;
-    return ( a < b ? -1 : (a == b ? 0 : 1));
-  }
-
-  // We implement special compare versions for narrow oops to avoid
-  // testing for UseCompressedOops on every comparison.
-  static int method_compare_narrow(narrowOop* a, narrowOop* b) {
-    methodOop m = (methodOop)oopDesc::load_decode_heap_oop(a);
-    methodOop n = (methodOop)oopDesc::load_decode_heap_oop(b);
-    return m->name()->fast_compare(n->name());
-  }
-
-  static int method_compare_narrow_idempotent(narrowOop* a, narrowOop* b) {
-    int i = method_compare_narrow(a, b);
-    if (i != 0) return i;
-    return ( a < b ? -1 : (a == b ? 0 : 1));
-  }
-
-  typedef int (*compareFn)(const void*, const void*);
-}
-
-
 // This is only done during class loading, so it is OK to assume method_idnum matches the methods() array
 static void reorder_based_on_method_index(objArrayOop methods,
                                           objArrayOop annotations,
@@ -1265,6 +1231,14 @@
   }
 }
 
+// Comparer for sorting an object array containing
+// methodOops.
+template <class T>
+static int method_comparator(T a, T b) {
+  methodOop m = (methodOop)oopDesc::decode_heap_oop_not_null(a);
+  methodOop n = (methodOop)oopDesc::decode_heap_oop_not_null(b);
+  return m->name()->fast_compare(n->name());
+}
 
 // This is only done during class loading, so it is OK to assume method_idnum matches the methods() array
 void methodOopDesc::sort_methods(objArrayOop methods,
@@ -1287,30 +1261,19 @@
         m->set_method_idnum(i);
       }
     }
-
-    // Use a simple bubble sort for small number of methods since
-    // qsort requires a functional pointer call for each comparison.
-    if (length < 8) {
-      bool sorted = true;
-      for (int i=length-1; i>0; i--) {
-        for (int j=0; j<i; j++) {
-          methodOop m1 = (methodOop)methods->obj_at(j);
-          methodOop m2 = (methodOop)methods->obj_at(j+1);
-          if ((uintptr_t)m1->name() > (uintptr_t)m2->name()) {
-            methods->obj_at_put(j, m2);
-            methods->obj_at_put(j+1, m1);
-            sorted = false;
-          }
-        }
-        if (sorted) break;
-          sorted = true;
+    {
+      No_Safepoint_Verifier nsv;
+      if (UseCompressedOops) {
+        QuickSort::sort<narrowOop>((narrowOop*)(methods->base()), length, method_comparator<narrowOop>, idempotent);
+      } else {
+        QuickSort::sort<oop>((oop*)(methods->base()), length, method_comparator<oop>, idempotent);
       }
-    } else {
-      compareFn compare =
-        (UseCompressedOops ?
-         (compareFn) (idempotent ? method_compare_narrow_idempotent : method_compare_narrow):
-         (compareFn) (idempotent ? method_compare_idempotent : method_compare));
-      qsort(methods->base(), length, heapOopSize, compare);
+      if (UseConcMarkSweepGC) {
+        // For CMS we need to dirty the cards for the array
+        BarrierSet* bs = Universe::heap()->barrier_set();
+        assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");
+        bs->write_ref_array(methods->base(), length);
+      }
     }
 
     // Sort annotations if necessary