bytecodeTracer.hpp revision 0:a61af66fc99e 
1/*
2 * Copyright 1997-2003 Sun Microsystems, Inc.  All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25// The BytecodeTracer is a helper class used by the interpreter for run-time
26// bytecode tracing. If bytecode tracing is turned on, trace() will be called
27// for each bytecode.
28//
29// By specialising the BytecodeClosure, all kinds of bytecode traces can
30// be done.
31
32#ifndef PRODUCT
33// class BytecodeTracer is only used by TraceBytecodes option
34
35class BytecodeClosure;
36class BytecodeTracer: AllStatic {
37 private:
38  static BytecodeClosure* _closure;
39
40 public:
41  static BytecodeClosure* std_closure();                        // a printing closure
42  static BytecodeClosure* closure()                                                   { return _closure; }
43  static void             set_closure(BytecodeClosure* closure) { _closure = closure; }
44
45  static void             trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st = tty);
46  static void             trace(methodHandle method, address bcp, outputStream* st = tty);
47};
48
49
50// For each bytecode, a BytecodeClosure's trace() routine will be called.
51
52class BytecodeClosure {
53 public:
54  virtual void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st) = 0;
55  virtual void trace(methodHandle method, address bcp, outputStream* st) = 0;
56};
57
58#endif // !PRODUCT
59