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comparison src/share/vm/ci/ciExceptionHandler.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1999-2005 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 // ciExceptionHandler
26 //
27 // This class represents an exception handler for a method.
28 class ciExceptionHandler : public ResourceObj {
29 private:
30 friend class ciMethod;
31
32 // The loader to be used for resolving the exception
33 // klass.
34 ciInstanceKlass* _loading_klass;
35
36 // Handler data.
37 int _start;
38 int _limit;
39 int _handler_bci;
40 int _catch_klass_index;
41
42 // The exception klass that this handler catches.
43 ciInstanceKlass* _catch_klass;
44
45 public:
46 ciExceptionHandler(ciInstanceKlass* loading_klass,
47 int start, int limit,
48 int handler_bci, int klass_index) {
49 _loading_klass = loading_klass;
50 _start = start;
51 _limit = limit;
52 _handler_bci = handler_bci;
53 _catch_klass_index = klass_index;
54 _catch_klass = NULL;
55 }
56
57 int start() { return _start; }
58 int limit() { return _limit; }
59 int handler_bci() { return _handler_bci; }
60 int catch_klass_index() { return _catch_klass_index; }
61
62 // Get the exception klass that this handler catches.
63 ciInstanceKlass* catch_klass();
64
65 bool is_catch_all() { return catch_klass_index() == 0; }
66 bool is_in_range(int bci) {
67 return start() <= bci && bci < limit();
68 }
69 bool catches(ciInstanceKlass *exc) {
70 return is_catch_all() || exc->is_subtype_of(catch_klass());
71 }
72 bool is_rethrow() { return handler_bci() == -1; }
73
74 void print();
75 };