--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/gc_implementation/parNew/parOopClosures.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 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.
+ *
+ */
+
+// Closures for ParNewGeneration
+
+class ParScanThreadState;
+class ParNewGeneration;
+template<class E> class GenericTaskQueueSet;
+typedef GenericTaskQueueSet<oop> ObjToScanQueueSet;
+class ParallelTaskTerminator;
+
+class ParScanClosure: public OopsInGenClosure {
+protected:
+  ParScanThreadState* _par_scan_state;
+  ParNewGeneration* _g;
+  HeapWord* _boundary;
+  void do_oop_work(oop* p,
+                          bool gc_barrier,
+                          bool root_scan);
+
+  void par_do_barrier(oop* p);
+
+public:
+  ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state);
+};
+
+class ParScanWithBarrierClosure: public ParScanClosure {
+public:
+  void do_oop(oop* p)    { do_oop_work(p, true, false); }
+  void do_oop_nv(oop* p) { do_oop_work(p, true, false); }
+  ParScanWithBarrierClosure(ParNewGeneration* g,
+                            ParScanThreadState* par_scan_state) :
+    ParScanClosure(g, par_scan_state) {}
+};
+
+class ParScanWithoutBarrierClosure: public ParScanClosure {
+public:
+  ParScanWithoutBarrierClosure(ParNewGeneration* g,
+                               ParScanThreadState* par_scan_state) :
+    ParScanClosure(g, par_scan_state) {}
+  void do_oop(oop* p)    { do_oop_work(p, false, false); }
+  void do_oop_nv(oop* p) { do_oop_work(p, false, false); }
+};
+
+class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure {
+public:
+  ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g,
+                                       ParScanThreadState* par_scan_state) :
+    ParScanClosure(g, par_scan_state) {}
+  void do_oop(oop* p) { do_oop_work(p, true, true); }
+};
+
+class ParRootScanWithoutBarrierClosure: public ParScanClosure {
+public:
+  ParRootScanWithoutBarrierClosure(ParNewGeneration* g,
+                                   ParScanThreadState* par_scan_state) :
+    ParScanClosure(g, par_scan_state) {}
+  void do_oop(oop* p) { do_oop_work(p, false, true); }
+};
+
+class ParScanWeakRefClosure: public ScanWeakRefClosure {
+protected:
+  ParScanThreadState* _par_scan_state;
+public:
+  ParScanWeakRefClosure(ParNewGeneration* g,
+                        ParScanThreadState* par_scan_state);
+  void do_oop(oop* p);
+  void do_oop_nv(oop* p);
+};
+
+class ParEvacuateFollowersClosure: public VoidClosure {
+  ParScanThreadState* _par_scan_state;
+  ParScanThreadState* par_scan_state() { return _par_scan_state; }
+
+  // We want to preserve the specific types here (rather than "OopClosure")
+  // for later de-virtualization of do_oop calls.
+  ParScanWithoutBarrierClosure* _to_space_closure;
+  ParScanWithoutBarrierClosure* to_space_closure() {
+    return _to_space_closure;
+  }
+  ParRootScanWithoutBarrierClosure* _to_space_root_closure;
+  ParRootScanWithoutBarrierClosure* to_space_root_closure() {
+    return _to_space_root_closure;
+  }
+
+  ParScanWithBarrierClosure* _old_gen_closure;
+  ParScanWithBarrierClosure* old_gen_closure () {
+    return _old_gen_closure;
+  }
+  ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure;
+  ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () {
+    return _old_gen_root_closure;
+  }
+
+  ParNewGeneration* _par_gen;
+  ParNewGeneration* par_gen() { return _par_gen; }
+
+  ObjToScanQueueSet*  _task_queues;
+  ObjToScanQueueSet*  task_queues() { return _task_queues; }
+
+  ParallelTaskTerminator* _terminator;
+  ParallelTaskTerminator* terminator() { return _terminator; }
+
+public:
+  ParEvacuateFollowersClosure(
+    ParScanThreadState* par_scan_state_,
+    ParScanWithoutBarrierClosure* to_space_closure_,
+    ParScanWithBarrierClosure* old_gen_closure_,
+    ParRootScanWithoutBarrierClosure* to_space_root_closure_,
+    ParNewGeneration* par_gen_,
+    ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_,
+    ObjToScanQueueSet* task_queues_,
+    ParallelTaskTerminator* terminator_);
+  void do_void();
+};