| /* |
| * Copyright (c) 1997, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_INTERPRETER_BYTECODETRACER_HPP |
| #define SHARE_VM_INTERPRETER_BYTECODETRACER_HPP |
| |
| #include "memory/allocation.hpp" |
| #include "utilities/ostream.hpp" |
| |
| // The BytecodeTracer is a helper class used by the interpreter for run-time |
| // bytecode tracing. If bytecode tracing is turned on, trace() will be called |
| // for each bytecode. |
| // |
| // By specialising the BytecodeClosure, all kinds of bytecode traces can |
| // be done. |
| |
| // class BytecodeTracer is used by TraceBytecodes option and PrintMethodData |
| |
| class BytecodeClosure; |
| class BytecodeTracer: AllStatic { |
| private: |
| static BytecodeClosure* _closure; |
| |
| public: |
| static BytecodeClosure* std_closure(); // a printing closure |
| static BytecodeClosure* closure() { return _closure; } |
| static void set_closure(BytecodeClosure* closure) { _closure = closure; } |
| |
| static void trace(const methodHandle& method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st = tty); |
| static void trace(const methodHandle& method, address bcp, outputStream* st = tty); |
| }; |
| |
| |
| // For each bytecode, a BytecodeClosure's trace() routine will be called. |
| |
| class BytecodeClosure { |
| public: |
| virtual void trace(const methodHandle& method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st) = 0; |
| virtual void trace(const methodHandle& method, address bcp, outputStream* st) = 0; |
| }; |
| |
| #endif // SHARE_VM_INTERPRETER_BYTECODETRACER_HPP |