Sun, 23 May 2010 01:38:26 -0700
6939207: refactor constant pool index processing
Summary: Factored cleanup of instruction decode which prepares for enhanced ldc semantics.
Reviewed-by: twisti
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // The BytecodeTracer is a helper class used by the interpreter for run-time |
duke@435 | 26 | // bytecode tracing. If bytecode tracing is turned on, trace() will be called |
duke@435 | 27 | // for each bytecode. |
duke@435 | 28 | // |
duke@435 | 29 | // By specialising the BytecodeClosure, all kinds of bytecode traces can |
duke@435 | 30 | // be done. |
duke@435 | 31 | |
duke@435 | 32 | #ifndef PRODUCT |
duke@435 | 33 | // class BytecodeTracer is only used by TraceBytecodes option |
duke@435 | 34 | |
duke@435 | 35 | class BytecodeClosure; |
duke@435 | 36 | class BytecodeTracer: AllStatic { |
duke@435 | 37 | private: |
duke@435 | 38 | static BytecodeClosure* _closure; |
duke@435 | 39 | |
duke@435 | 40 | public: |
duke@435 | 41 | static BytecodeClosure* std_closure(); // a printing closure |
duke@435 | 42 | static BytecodeClosure* closure() { return _closure; } |
duke@435 | 43 | static void set_closure(BytecodeClosure* closure) { _closure = closure; } |
duke@435 | 44 | |
duke@435 | 45 | static void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st = tty); |
duke@435 | 46 | static void trace(methodHandle method, address bcp, outputStream* st = tty); |
duke@435 | 47 | }; |
duke@435 | 48 | |
duke@435 | 49 | |
duke@435 | 50 | // For each bytecode, a BytecodeClosure's trace() routine will be called. |
duke@435 | 51 | |
duke@435 | 52 | class BytecodeClosure { |
duke@435 | 53 | public: |
duke@435 | 54 | virtual void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st) = 0; |
duke@435 | 55 | virtual void trace(methodHandle method, address bcp, outputStream* st) = 0; |
duke@435 | 56 | }; |
duke@435 | 57 | |
duke@435 | 58 | #endif // !PRODUCT |