jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1_specialized_oop

6814437: G1: remove the _new_refs array
Summary: The per-worker _new_refs array is used to hold references that point into the collection set. It is populated during RSet updating and subsequently processed. In the event of an evacuation failure it processed again to recreate the RSets of regions in the collection set. Remove the per-worker _new_refs array by processing the references directly. Use a DirtyCardQueue to hold the cards containing the references so that the RSets of regions in the collection set can be recreated when handling an evacuation failure.
Reviewed-by: iveresov, jmasa, tonyp

     1 /*

     2  * Copyright (c) 2001, 2009, 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 // The following OopClosure types get specialized versions of

    26 // "oop_oop_iterate" that invoke the closures' do_oop methods

    27 // non-virtually, using a mechanism defined in this file.  Extend these

    28 // macros in the obvious way to add specializations for new closures.

    30 // Forward declarations.

    31 enum G1Barrier {

    32   G1BarrierNone, G1BarrierRS, G1BarrierEvac

    33 };

    35 template<bool do_gen_barrier, G1Barrier barrier,

    36          bool do_mark_forwardee>

    37 class G1ParCopyClosure;

    38 class G1ParScanClosure;

    39 class G1ParPushHeapRSClosure;

    41 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure;

    43 class FilterIntoCSClosure;

    44 class FilterOutOfRegionClosure;

    45 class FilterInHeapRegionAndIntoCSClosure;

    46 class FilterAndMarkInHeapRegionAndIntoCSClosure;

    48 #ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES

    49 #error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined."

    50 #endif

    52 #define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \

    53       f(G1ParScanHeapEvacClosure,_nv)                   \

    54       f(G1ParScanClosure,_nv)                           \

    55       f(G1ParPushHeapRSClosure,_nv)                     \

    56       f(FilterIntoCSClosure,_nv)                        \

    57       f(FilterOutOfRegionClosure,_nv)                   \

    58       f(FilterInHeapRegionAndIntoCSClosure,_nv)         \

    59       f(FilterAndMarkInHeapRegionAndIntoCSClosure,_nv)

    61 #ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES

    62 #error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined."

    63 #endif

    65 #define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f)

src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp@2d160770d2e5

src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp

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

src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp@2d160770d2e5

src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp