aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_INTERPRETER_BYTECODETRACER_HPP
aoqi@0: #define SHARE_VM_INTERPRETER_BYTECODETRACER_HPP
aoqi@0: 
aoqi@0: #include "memory/allocation.hpp"
aoqi@0: 
aoqi@0: // The BytecodeTracer is a helper class used by the interpreter for run-time
aoqi@0: // bytecode tracing. If bytecode tracing is turned on, trace() will be called
aoqi@0: // for each bytecode.
aoqi@0: //
aoqi@0: // By specialising the BytecodeClosure, all kinds of bytecode traces can
aoqi@0: // be done.
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0: // class BytecodeTracer is only used by TraceBytecodes option
aoqi@0: 
aoqi@0: class BytecodeClosure;
aoqi@0: class BytecodeTracer: AllStatic {
aoqi@0:  private:
aoqi@0:   static BytecodeClosure* _closure;
aoqi@0: 
aoqi@0:  public:
aoqi@0:   static BytecodeClosure* std_closure();                        // a printing closure
aoqi@0:   static BytecodeClosure* closure()                                                   { return _closure; }
aoqi@0:   static void             set_closure(BytecodeClosure* closure) { _closure = closure; }
aoqi@0: 
aoqi@0:   static void             trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st = tty);
aoqi@0:   static void             trace(methodHandle method, address bcp, outputStream* st = tty);
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: // For each bytecode, a BytecodeClosure's trace() routine will be called.
aoqi@0: 
aoqi@0: class BytecodeClosure {
aoqi@0:  public:
aoqi@0:   virtual void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st) = 0;
aoqi@0:   virtual void trace(methodHandle method, address bcp, outputStream* st) = 0;
aoqi@0: };
aoqi@0: 
aoqi@0: #endif // !PRODUCT
aoqi@0: 
aoqi@0: #endif // SHARE_VM_INTERPRETER_BYTECODETRACER_HPP