1 /* 2 * Copyright (c) 1999, 2005, 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 // 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 };