1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/ci/ciExceptionHandler.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,83 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP
1.29 +#define SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP
1.30 +
1.31 +#include "ci/ciClassList.hpp"
1.32 +#include "ci/ciInstanceKlass.hpp"
1.33 +
1.34 +// ciExceptionHandler
1.35 +//
1.36 +// This class represents an exception handler for a method.
1.37 +class ciExceptionHandler : public ResourceObj {
1.38 +private:
1.39 + friend class ciMethod;
1.40 +
1.41 + // The loader to be used for resolving the exception
1.42 + // klass.
1.43 + ciInstanceKlass* _loading_klass;
1.44 +
1.45 + // Handler data.
1.46 + int _start;
1.47 + int _limit;
1.48 + int _handler_bci;
1.49 + int _catch_klass_index;
1.50 +
1.51 + // The exception klass that this handler catches.
1.52 + ciInstanceKlass* _catch_klass;
1.53 +
1.54 +public:
1.55 + ciExceptionHandler(ciInstanceKlass* loading_klass,
1.56 + int start, int limit,
1.57 + int handler_bci, int klass_index) {
1.58 + _loading_klass = loading_klass;
1.59 + _start = start;
1.60 + _limit = limit;
1.61 + _handler_bci = handler_bci;
1.62 + _catch_klass_index = klass_index;
1.63 + _catch_klass = NULL;
1.64 + }
1.65 +
1.66 + int start() { return _start; }
1.67 + int limit() { return _limit; }
1.68 + int handler_bci() { return _handler_bci; }
1.69 + int catch_klass_index() { return _catch_klass_index; }
1.70 +
1.71 + // Get the exception klass that this handler catches.
1.72 + ciInstanceKlass* catch_klass();
1.73 +
1.74 + bool is_catch_all() { return catch_klass_index() == 0; }
1.75 + bool is_in_range(int bci) {
1.76 + return start() <= bci && bci < limit();
1.77 + }
1.78 + bool catches(ciInstanceKlass *exc) {
1.79 + return is_catch_all() || exc->is_subtype_of(catch_klass());
1.80 + }
1.81 + bool is_rethrow() { return handler_bci() == -1; }
1.82 +
1.83 + void print();
1.84 +};
1.85 +
1.86 +#endif // SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP
