1 /* 2 * Copyright (c) 1999, 2010, 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_VM_CI_CIEXCEPTIONHANDLER_HPP 26 #define SHARE_VM_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. 34 class ciExceptionHandler : public ResourceObj { 35 private: 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 51 public: 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_VM_CI_CIEXCEPTIONHANDLER_HPP