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/*
* 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;
};
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