Wed, 03 Jul 2019 20:42:37 +0800
Merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #ifndef SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP |
aoqi@0 | 26 | #define SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP |
aoqi@0 | 27 | |
aoqi@0 | 28 | #include "ci/ciClassList.hpp" |
aoqi@0 | 29 | #include "ci/ciInstanceKlass.hpp" |
aoqi@0 | 30 | |
aoqi@0 | 31 | // ciExceptionHandler |
aoqi@0 | 32 | // |
aoqi@0 | 33 | // This class represents an exception handler for a method. |
aoqi@0 | 34 | class ciExceptionHandler : public ResourceObj { |
aoqi@0 | 35 | private: |
aoqi@0 | 36 | friend class ciMethod; |
aoqi@0 | 37 | |
aoqi@0 | 38 | // The loader to be used for resolving the exception |
aoqi@0 | 39 | // klass. |
aoqi@0 | 40 | ciInstanceKlass* _loading_klass; |
aoqi@0 | 41 | |
aoqi@0 | 42 | // Handler data. |
aoqi@0 | 43 | int _start; |
aoqi@0 | 44 | int _limit; |
aoqi@0 | 45 | int _handler_bci; |
aoqi@0 | 46 | int _catch_klass_index; |
aoqi@0 | 47 | |
aoqi@0 | 48 | // The exception klass that this handler catches. |
aoqi@0 | 49 | ciInstanceKlass* _catch_klass; |
aoqi@0 | 50 | |
aoqi@0 | 51 | public: |
aoqi@0 | 52 | ciExceptionHandler(ciInstanceKlass* loading_klass, |
aoqi@0 | 53 | int start, int limit, |
aoqi@0 | 54 | int handler_bci, int klass_index) { |
aoqi@0 | 55 | _loading_klass = loading_klass; |
aoqi@0 | 56 | _start = start; |
aoqi@0 | 57 | _limit = limit; |
aoqi@0 | 58 | _handler_bci = handler_bci; |
aoqi@0 | 59 | _catch_klass_index = klass_index; |
aoqi@0 | 60 | _catch_klass = NULL; |
aoqi@0 | 61 | } |
aoqi@0 | 62 | |
aoqi@0 | 63 | int start() { return _start; } |
aoqi@0 | 64 | int limit() { return _limit; } |
aoqi@0 | 65 | int handler_bci() { return _handler_bci; } |
aoqi@0 | 66 | int catch_klass_index() { return _catch_klass_index; } |
aoqi@0 | 67 | |
aoqi@0 | 68 | // Get the exception klass that this handler catches. |
aoqi@0 | 69 | ciInstanceKlass* catch_klass(); |
aoqi@0 | 70 | |
aoqi@0 | 71 | bool is_catch_all() { return catch_klass_index() == 0; } |
aoqi@0 | 72 | bool is_in_range(int bci) { |
aoqi@0 | 73 | return start() <= bci && bci < limit(); |
aoqi@0 | 74 | } |
aoqi@0 | 75 | bool catches(ciInstanceKlass *exc) { |
aoqi@0 | 76 | return is_catch_all() || exc->is_subtype_of(catch_klass()); |
aoqi@0 | 77 | } |
aoqi@0 | 78 | bool is_rethrow() { return handler_bci() == -1; } |
aoqi@0 | 79 | |
aoqi@0 | 80 | void print(); |
aoqi@0 | 81 | }; |
aoqi@0 | 82 | |
aoqi@0 | 83 | #endif // SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP |