jdk8-mips64-public/hotspot: src/share/vm/ci/ciExceptionHandler.hpp@ac27a9c85bea

     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  */

    25 #ifndef SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP

    26 #define SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP

    28 #include "ci/ciClassList.hpp"

    29 #include "ci/ciInstanceKlass.hpp"

    31 // ciExceptionHandler

    32 //

    33 // This class represents an exception handler for a method.

    34 class ciExceptionHandler : public ResourceObj {

    35 private:

    36   friend class ciMethod;

    38   // The loader to be used for resolving the exception

    39   // klass.

    40   ciInstanceKlass* _loading_klass;

    42   // Handler data.

    43   int _start;

    44   int _limit;

    45   int _handler_bci;

    46   int _catch_klass_index;

    48   // The exception klass that this handler catches.

    49   ciInstanceKlass* _catch_klass;

    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   }

    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; }

    68   // Get the exception klass that this handler catches.

    69   ciInstanceKlass* catch_klass();

    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; }

    80   void      print();

    81 };

    83 #endif // SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP

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