ciExceptionHandler.cpp revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 1999, 2009, 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#include "incls/_precompiled.incl"
26#include "incls/_ciExceptionHandler.cpp.incl"
27
28// ciExceptionHandler
29//
30// This class represents an exception handler for a method.
31
32// ------------------------------------------------------------------
33// ciExceptionHandler::catch_klass
34//
35// Get the exception klass that this handler catches.
36ciInstanceKlass* ciExceptionHandler::catch_klass() {
37  VM_ENTRY_MARK;
38  assert(!is_catch_all(), "bad index");
39  if (_catch_klass == NULL) {
40    bool will_link;
41    assert(_loading_klass->get_instanceKlass()->is_linked(), "must be linked before accessing constant pool");
42    constantPoolHandle cpool(_loading_klass->get_instanceKlass()->constants());
43    ciKlass* k = CURRENT_ENV->get_klass_by_index(cpool,
44                                                 _catch_klass_index,
45                                                 will_link,
46                                                 _loading_klass);
47    if (!will_link && k->is_loaded()) {
48      GUARDED_VM_ENTRY(
49        k = CURRENT_ENV->get_unloaded_klass(_loading_klass, k->name());
50      )
51    }
52    _catch_klass = k->as_instance_klass();
53  }
54  return _catch_klass;
55}
56
57// ------------------------------------------------------------------
58// ciExceptionHandler::print()
59void ciExceptionHandler::print() {
60  tty->print("<ciExceptionHandler start=%d limit=%d"
61             " handler_bci=%d ex_klass_index=%d",
62             start(), limit(), handler_bci(), catch_klass_index());
63  if (_catch_klass != NULL) {
64    tty->print(" ex_klass=");
65    _catch_klass->print();
66  }
67  tty->print(">");
68}
69