jdk8-mips64-public/hotspot: src/share/vm/ci/ciExceptionHandler.cpp@dd57230ba8fe

6893268: additional dynamic language related optimizations in C2
Summary: C2 needs some additional optimizations to be able to handle MethodHandle invokes and invokedynamic instructions at the best performance.
Reviewed-by: kvn, never

     1 /*

     2  * Copyright 1999-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 #include "incls/_precompiled.incl"

    26 #include "incls/_ciExceptionHandler.cpp.incl"

    28 // ciExceptionHandler

    29 //

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

    32 // ------------------------------------------------------------------

    33 // ciExceptionHandler::catch_klass

    34 //

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

    36 ciInstanceKlass* ciExceptionHandler::catch_klass() {

    37   VM_ENTRY_MARK;

    38   assert(!is_catch_all(), "bad index");

    39   if (_catch_klass == NULL) {

    40     bool will_link;

    41     assert(_loading_klass->get_instanceKlass()->is_linked(), "must be linked before accessing constant pool");

    42     constantPoolHandle cpool(_loading_klass->get_instanceKlass()->constants());

    43     ciKlass* k = CURRENT_ENV->get_klass_by_index(cpool,

    44                                                  _catch_klass_index,

    45                                                  will_link,

    46                                                  _loading_klass);

    47     if (!will_link && k->is_loaded()) {

    48       GUARDED_VM_ENTRY(

    49         k = CURRENT_ENV->get_unloaded_klass(_loading_klass, k->name());

    50       )

    51     }

    52     _catch_klass = k->as_instance_klass();

    53   }

    54   return _catch_klass;

    55 }

    57 // ------------------------------------------------------------------

    58 // ciExceptionHandler::print()

    59 void ciExceptionHandler::print() {

    60   tty->print("<ciExceptionHandler start=%d limit=%d"

    61              " handler_bci=%d ex_klass_index=%d",

    62              start(), limit(), handler_bci(), catch_klass_index());

    63   if (_catch_klass != NULL) {

    64     tty->print(" ex_klass=");

    65     _catch_klass->print();

    66   }

    67   tty->print(">");

    68 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/ci/ciExceptionHandler.cpp@dd57230ba8fe

src/share/vm/ci/ciExceptionHandler.cpp