--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/oops/oop.pcgc.inline.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2005-2007 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.
+ *
+ */
+
+inline void oopDesc::update_contents(ParCompactionManager* cm) {
+  // The klass field must be updated before anything else
+  // can be done.
+  DEBUG_ONLY(klassOopDesc* original_klass = klass());
+
+  // Can the option to update and/or copy be moved up in the
+  // call chain to avoid calling into here?
+
+  if (PSParallelCompact::should_update_klass(klass())) {
+    update_header();
+    assert(klass()->is_klass(), "Not updated correctly");
+  } else {
+    assert(klass()->is_klass(), "Not updated");
+  }
+
+  Klass* new_klass = blueprint();
+  if (!new_klass->oop_is_typeArray()) {
+    // It might contain oops beyond the header, so take the virtual call.
+    new_klass->oop_update_pointers(cm, this);
+  }
+  // Else skip it.  The typeArrayKlass in the header never needs scavenging.
+}
+
+inline void oopDesc::update_contents(ParCompactionManager* cm,
+                                     HeapWord* begin_limit,
+                                     HeapWord* end_limit) {
+  // The klass field must be updated before anything else
+  // can be done.
+  debug_only(klassOopDesc* original_klass = klass());
+
+  update_contents(cm, klass(), begin_limit, end_limit);
+}
+
+inline void oopDesc::update_contents(ParCompactionManager* cm,
+                                     klassOop old_klass,
+                                     HeapWord* begin_limit,
+                                     HeapWord* end_limit) {
+
+  klassOop updated_klass =
+    PSParallelCompact::summary_data().calc_new_klass(old_klass);
+
+  // Needs to be boundary aware for the 64 bit case
+  // update_header();
+  // The klass has moved.  Is the location of the klass
+  // within the limits?
+  if ((((HeapWord*)&_klass) >= begin_limit) &&
+      (((HeapWord*)&_klass) < end_limit)) {
+    set_klass(updated_klass);
+  }
+
+  Klass* klass = updated_klass->klass_part();
+  if (!klass->oop_is_typeArray()) {
+    // It might contain oops beyond the header, so take the virtual call.
+    klass->oop_update_pointers(cm, this, begin_limit, end_limit);
+  }
+  // Else skip it.  The typeArrayKlass in the header never needs scavenging.
+}
+
+inline void oopDesc::follow_contents(ParCompactionManager* cm) {
+  assert (PSParallelCompact::mark_bitmap()->is_marked(this),
+    "should be marked");
+  blueprint()->oop_follow_contents(cm, this);
+}
+
+// Used by parallel old GC.
+
+inline void oopDesc::follow_header(ParCompactionManager* cm) {
+  PSParallelCompact::mark_and_push(cm, (oop*)&_klass);
+}
+
+inline oop oopDesc::forward_to_atomic(oop p) {
+  assert(ParNewGeneration::is_legal_forward_ptr(p),
+         "illegal forwarding pointer value.");
+  markOop oldMark = mark();
+  markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p);
+  markOop curMark;
+
+  assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable");
+  assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this.");
+
+  while (!is_forwarded()) {
+    curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark);
+    if (curMark == oldMark) {
+      assert(is_forwarded(), "the CAS should have succeeded.");
+      return NULL;
+    }
+    oldMark = curMark;
+  }
+  return forwardee();
+}
+
+inline void oopDesc::update_header() {
+  PSParallelCompact::adjust_pointer((oop*)&_klass);
+}
+
+inline void oopDesc::update_header(HeapWord* beg_addr, HeapWord* end_addr) {
+  PSParallelCompact::adjust_pointer((oop*)&_klass, beg_addr, end_addr);
+}