--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/shark/sharkStateScanner.hpp	Wed Aug 11 05:51:21 2010 -0700
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2008, 2009 Red Hat, Inc.
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+class SharkState;
+
+class SharkStateScanner : public SharkTargetInvariants {
+ protected:
+  SharkStateScanner(SharkFunction* function)
+    : SharkTargetInvariants(function), _stack(function->stack()) {}
+
+ private:
+  SharkStack* _stack;
+
+ protected:
+  SharkStack* stack() const {
+    return _stack;
+  }
+
+  // Scan the frame
+ public:
+  void scan(SharkState* state);
+
+  // Callbacks
+  // Note that the offsets supplied to the various process_* callbacks
+  // are specified in wordSize words from the frame's unextended_sp.
+ protected:
+  virtual void start_frame()                                                 {}
+
+  virtual void start_stack(int stack_depth)                                  {}
+  virtual void process_stack_slot(int index, SharkValue** value, int offset) {}
+  virtual void end_stack()                                                   {}
+
+  virtual void start_monitors(int num_monitors)                              {}
+  virtual void process_monitor(int index, int box_offset, int obj_offset)    {}
+  virtual void end_monitors()                                                {}
+
+  virtual void start_frame_header()                                          {}
+  virtual void process_oop_tmp_slot(llvm::Value** value, int offset)         {}
+  virtual void process_method_slot(llvm::Value** value, int offset)          {}
+  virtual void process_pc_slot(int offset)                                   {}
+  virtual void end_frame_header()                                            {}
+
+  virtual void start_locals()                                                {}
+  virtual void process_local_slot(int index, SharkValue** value, int offset) {}
+  virtual void end_locals()                                                  {}
+
+  virtual void end_frame()                                                   {}
+
+  // Integrity checks
+ private:
+  void stack_integrity_checks(SharkState* state) PRODUCT_RETURN;
+  void locals_integrity_checks(SharkState* state) PRODUCT_RETURN;
+};