jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/shared/copyFailedInfo.hpp@55a0da3d420b

8027675: Full collections with Serial slower in JDK 8 compared to 7u40
Summary: Reduced the number of calls to follow_class_loader and instead marked and pushed the klass holder directly. Also removed unneeded calls to adjust_klass.
Reviewed-by: coleenp, jmasa, mgerdin, tschatzl

     1 /*

     2  * Copyright (c) 2012, 2013, 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_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP

    26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP

    28 #include "runtime/thread.hpp"

    29 #include "utilities/globalDefinitions.hpp"

    31 class CopyFailedInfo : public CHeapObj<mtGC> {

    32   size_t    _first_size;

    33   size_t    _smallest_size;

    34   size_t    _total_size;

    35   uint      _count;

    37  public:

    38   CopyFailedInfo() : _first_size(0), _smallest_size(0), _total_size(0), _count(0) {}

    40   virtual void register_copy_failure(size_t size) {

    41     if (_first_size == 0) {

    42       _first_size = size;

    43       _smallest_size = size;

    44     } else if (size < _smallest_size) {

    45       _smallest_size = size;

    46     }

    47     _total_size += size;

    48     _count++;

    49   }

    51   virtual void reset() {

    52     _first_size = 0;

    53     _smallest_size = 0;

    54     _total_size = 0;

    55     _count = 0;

    56   }

    58   bool has_failed() const { return _count != 0; }

    59   size_t first_size() const { return _first_size; }

    60   size_t smallest_size() const { return _smallest_size; }

    61   size_t total_size() const { return _total_size; }

    62   uint failed_count() const { return _count; }

    63 };

    65 class PromotionFailedInfo : public CopyFailedInfo {

    66   OSThread* _thread;

    68  public:

    69   PromotionFailedInfo() : CopyFailedInfo(), _thread(NULL) {}

    71   void register_copy_failure(size_t size) {

    72     CopyFailedInfo::register_copy_failure(size);

    73     if (_thread == NULL) {

    74       _thread = Thread::current()->osthread();

    75     } else {

    76       assert(_thread == Thread::current()->osthread(), "The PromotionFailedInfo should be thread local.");

    77     }

    78   }

    80   void reset() {

    81     CopyFailedInfo::reset();

    82     _thread = NULL;

    83   }

    85   OSThread* thread() const { return _thread; }

    86 };

    88 class EvacuationFailedInfo : public CopyFailedInfo {};

    90 #endif /* SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP */

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

src/share/vm/gc_implementation/shared/copyFailedInfo.hpp@55a0da3d420b

src/share/vm/gc_implementation/shared/copyFailedInfo.hpp