diff -r 000000000000 -r a61af66fc99e src/share/vm/memory/specialized_oop_closures.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/memory/specialized_oop_closures.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2001-2003 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_specialized_oop_closures.cpp.incl"
+
+// For keeping stats on effectiveness.
+#ifndef PRODUCT
+#if ENABLE_SPECIALIZATION_STATS
+
+int SpecializationStats::_numCallsAll;
+
+int SpecializationStats::_numCallsTotal[NUM_Kinds];
+int SpecializationStats::_numCalls_nv[NUM_Kinds];
+
+int SpecializationStats::_numDoOopCallsTotal[NUM_Kinds];
+int SpecializationStats::_numDoOopCalls_nv[NUM_Kinds];
+
+void SpecializationStats::clear() {
+  _numCallsAll = 0;
+  for (int k = ik; k < NUM_Kinds; k++) {
+    _numCallsTotal[k] = 0;
+    _numCalls_nv[k] = 0;
+
+    _numDoOopCallsTotal[k] = 0;
+    _numDoOopCalls_nv[k] = 0;
+  }
+}
+
+void SpecializationStats::print() {
+  const char* header_format = "    %20s %10s %11s %10s";
+  const char* line_format   = "    %20s %10d %11d %9.2f%%";
+  int all_numCallsTotal =
+    _numCallsTotal[ik] + _numCallsTotal[irk] + _numCallsTotal[oa];
+  int all_numCalls_nv =
+    _numCalls_nv[ik] + _numCalls_nv[irk] + _numCalls_nv[oa];
+  gclog_or_tty->print_cr("\nOf %d oop_oop_iterate calls %d (%6.3f%%) are in (ik, irk, oa).",
+                _numCallsAll, all_numCallsTotal,
+                100.0 * (float)all_numCallsTotal / (float)_numCallsAll);
+  // irk calls are double-counted.
+  int real_ik_numCallsTotal = _numCallsTotal[ik] - _numCallsTotal[irk];
+  int real_ik_numCalls_nv   = _numCalls_nv[ik]   - _numCalls_nv[irk];
+  gclog_or_tty->print_cr("");
+  gclog_or_tty->print_cr(header_format, "oop_oop_iterate:", "calls", "non-virtual", "pct");
+  gclog_or_tty->print_cr(header_format,
+                "----------",
+                "----------",
+                "-----------",
+                "----------");
+  gclog_or_tty->print_cr(line_format, "all",
+                all_numCallsTotal,
+                all_numCalls_nv,
+                100.0 * (float)all_numCalls_nv / (float)all_numCallsTotal);
+  gclog_or_tty->print_cr(line_format, "ik",
+                real_ik_numCallsTotal, real_ik_numCalls_nv,
+                100.0 * (float)real_ik_numCalls_nv /
+                (float)real_ik_numCallsTotal);
+  gclog_or_tty->print_cr(line_format, "irk",
+                _numCallsTotal[irk], _numCalls_nv[irk],
+                100.0 * (float)_numCalls_nv[irk] / (float)_numCallsTotal[irk]);
+  gclog_or_tty->print_cr(line_format, "oa",
+                _numCallsTotal[oa], _numCalls_nv[oa],
+                100.0 * (float)_numCalls_nv[oa] / (float)_numCallsTotal[oa]);
+
+
+  gclog_or_tty->print_cr("");
+  gclog_or_tty->print_cr(header_format, "do_oop:", "calls", "non-virtual", "pct");
+  gclog_or_tty->print_cr(header_format,
+                "----------",
+                "----------",
+                "-----------",
+                "----------");
+  int all_numDoOopCallsTotal =
+    _numDoOopCallsTotal[ik] + _numDoOopCallsTotal[irk] + _numDoOopCallsTotal[oa];
+  int all_numDoOopCalls_nv =
+    _numDoOopCalls_nv[ik] + _numDoOopCalls_nv[irk] + _numDoOopCalls_nv[oa];
+  gclog_or_tty->print_cr(line_format, "all",
+                all_numDoOopCallsTotal, all_numDoOopCalls_nv,
+                100.0 * (float)all_numDoOopCalls_nv /
+                (float)all_numDoOopCallsTotal);
+  const char* kind_names[] = { "ik", "irk", "oa" };
+  for (int k = ik; k < NUM_Kinds; k++) {
+    gclog_or_tty->print_cr(line_format, kind_names[k],
+                  _numDoOopCallsTotal[k], _numDoOopCalls_nv[k],
+                  (_numDoOopCallsTotal[k] > 0 ?
+                   100.0 * (float)_numDoOopCalls_nv[k] /
+                   (float)_numDoOopCallsTotal[k]
+                   : 0.0));
+  }
+}
+
+#endif  // ENABLE_SPECIALIZATION_STATS
+#endif  // !PRODUCT