1/*
2 * Copyright (c) 1999, 2019, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#ifndef SHARE_CI_CIEXCEPTIONHANDLER_HPP
26#define SHARE_CI_CIEXCEPTIONHANDLER_HPP
27
28#include "ci/ciClassList.hpp"
29#include "ci/ciInstanceKlass.hpp"
30
31// ciExceptionHandler
32//
33// This class represents an exception handler for a method.
34class ciExceptionHandler : public ResourceObj {
35private:
36 friend class ciMethod;
37
38 // The loader to be used for resolving the exception
39 // klass.
40 ciInstanceKlass* _loading_klass;
41
42 // Handler data.
43 int _start;
44 int _limit;
45 int _handler_bci;
46 int _catch_klass_index;
47
48 // The exception klass that this handler catches.
49 ciInstanceKlass* _catch_klass;
50
51public:
52 ciExceptionHandler(ciInstanceKlass* loading_klass,
53 int start, int limit,
54 int handler_bci, int klass_index) {
55 _loading_klass = loading_klass;
56 _start = start;
57 _limit = limit;
58 _handler_bci = handler_bci;
59 _catch_klass_index = klass_index;
60 _catch_klass = NULL;
61 }
62
63 int start() { return _start; }
64 int limit() { return _limit; }
65 int handler_bci() { return _handler_bci; }
66 int catch_klass_index() { return _catch_klass_index; }
67
68 // Get the exception klass that this handler catches.
69 ciInstanceKlass* catch_klass();
70
71 bool is_catch_all() { return catch_klass_index() == 0; }
72 bool is_in_range(int bci) {
73 return start() <= bci && bci < limit();
74 }
75 bool catches(ciInstanceKlass *exc) {
76 return is_catch_all() || exc->is_subtype_of(catch_klass());
77 }
78 bool is_rethrow() { return handler_bci() == -1; }
79
80 void print();
81};
82
83#endif // SHARE_CI_CIEXCEPTIONHANDLER_HPP
84