jdk8-mips64-public/hotspot: src/cpu/zero/vm/javaFrameAnchor

6908267: Zero fails to unlock synchronized native methods on exception
Reviewed-by: never
Contributed-by: Gary Benson <gbenson@redhat.com>

     1 /*

     2  * Copyright 2003-2005 Sun Microsystems, Inc.  All Rights Reserved.

     3  * Copyright 2007, 2008 Red Hat, Inc.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

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

    22  * have any questions.

    23  *

    24  */

    26  public:

    27   // Each arch must define reset, save, restore

    28   // These are used by objects that only care about:

    29   //  1 - initializing a new state (thread creation, javaCalls)

    30   //  2 - saving a current state (javaCalls)

    31   //  3 - restoring an old state (javaCalls)

    33   void clear() {

    34     // clearing _last_Java_sp must be first

    35     _last_Java_sp = NULL;

    36     // fence?

    37     _last_Java_pc = NULL;

    38   }

    40   void copy(JavaFrameAnchor* src) {

    41     // In order to make sure the transition state is valid for "this"

    42     // We must clear _last_Java_sp before copying the rest of the new

    43     // data

    44     //

    45     // Hack Alert: Temporary bugfix for 4717480/4721647 To act like

    46     // previous version (pd_cache_state) don't NULL _last_Java_sp

    47     // unless the value is changing

    48     //

    49     if (_last_Java_sp != src->_last_Java_sp)

    50       _last_Java_sp = NULL;

    52     _last_Java_pc = src->_last_Java_pc;

    53     // Must be last so profiler will always see valid frame if

    54     // has_last_frame() is true

    55     _last_Java_sp = src->_last_Java_sp;

    56   }

    58   bool walkable() {

    59     return true;

    60   }

    62   void make_walkable(JavaThread* thread) {

    63     // nothing to do

    64   }

    66   intptr_t* last_Java_sp() const {

    67     return _last_Java_sp;

    68   }

    70   void set_last_Java_sp(intptr_t* sp) {

    71     _last_Java_sp = sp;

    72   }

src/cpu/zero/vm/javaFrameAnchor_zero.hpp@b6f06e395428