Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/gc_implementation/shared/copyFailedInfo.hpp@55a0da3d420b (annotated)
src/share/vm/gc_implementation/shared/copyFailedInfo.hpp
Tue, 26 Nov 2013 14:35:38 +0100
- author
- sjohanss
- date
- Tue, 26 Nov 2013 14:35:38 +0100
- changeset 6148
- 55a0da3d420b
- parent 0
- f90c822e73f8
- permissions
- -rw-r--r--
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
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP |
| aoqi@0 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "runtime/thread.hpp" |
| aoqi@0 | 29 | #include "utilities/globalDefinitions.hpp" |
| aoqi@0 | 30 | |
| aoqi@0 | 31 | class CopyFailedInfo : public CHeapObj<mtGC> { |
| aoqi@0 | 32 | size_t _first_size; |
| aoqi@0 | 33 | size_t _smallest_size; |
| aoqi@0 | 34 | size_t _total_size; |
| aoqi@0 | 35 | uint _count; |
| aoqi@0 | 36 | |
| aoqi@0 | 37 | public: |
| aoqi@0 | 38 | CopyFailedInfo() : _first_size(0), _smallest_size(0), _total_size(0), _count(0) {} |
| aoqi@0 | 39 | |
| aoqi@0 | 40 | virtual void register_copy_failure(size_t size) { |
| aoqi@0 | 41 | if (_first_size == 0) { |
| aoqi@0 | 42 | _first_size = size; |
| aoqi@0 | 43 | _smallest_size = size; |
| aoqi@0 | 44 | } else if (size < _smallest_size) { |
| aoqi@0 | 45 | _smallest_size = size; |
| aoqi@0 | 46 | } |
| aoqi@0 | 47 | _total_size += size; |
| aoqi@0 | 48 | _count++; |
| aoqi@0 | 49 | } |
| aoqi@0 | 50 | |
| aoqi@0 | 51 | virtual void reset() { |
| aoqi@0 | 52 | _first_size = 0; |
| aoqi@0 | 53 | _smallest_size = 0; |
| aoqi@0 | 54 | _total_size = 0; |
| aoqi@0 | 55 | _count = 0; |
| aoqi@0 | 56 | } |
| aoqi@0 | 57 | |
| aoqi@0 | 58 | bool has_failed() const { return _count != 0; } |
| aoqi@0 | 59 | size_t first_size() const { return _first_size; } |
| aoqi@0 | 60 | size_t smallest_size() const { return _smallest_size; } |
| aoqi@0 | 61 | size_t total_size() const { return _total_size; } |
| aoqi@0 | 62 | uint failed_count() const { return _count; } |
| aoqi@0 | 63 | }; |
| aoqi@0 | 64 | |
| aoqi@0 | 65 | class PromotionFailedInfo : public CopyFailedInfo { |
| aoqi@0 | 66 | OSThread* _thread; |
| aoqi@0 | 67 | |
| aoqi@0 | 68 | public: |
| aoqi@0 | 69 | PromotionFailedInfo() : CopyFailedInfo(), _thread(NULL) {} |
| aoqi@0 | 70 | |
| aoqi@0 | 71 | void register_copy_failure(size_t size) { |
| aoqi@0 | 72 | CopyFailedInfo::register_copy_failure(size); |
| aoqi@0 | 73 | if (_thread == NULL) { |
| aoqi@0 | 74 | _thread = Thread::current()->osthread(); |
| aoqi@0 | 75 | } else { |
| aoqi@0 | 76 | assert(_thread == Thread::current()->osthread(), "The PromotionFailedInfo should be thread local."); |
| aoqi@0 | 77 | } |
| aoqi@0 | 78 | } |
| aoqi@0 | 79 | |
| aoqi@0 | 80 | void reset() { |
| aoqi@0 | 81 | CopyFailedInfo::reset(); |
| aoqi@0 | 82 | _thread = NULL; |
| aoqi@0 | 83 | } |
| aoqi@0 | 84 | |
| aoqi@0 | 85 | OSThread* thread() const { return _thread; } |
| aoqi@0 | 86 | }; |
| aoqi@0 | 87 | |
| aoqi@0 | 88 | class EvacuationFailedInfo : public CopyFailedInfo {}; |
| aoqi@0 | 89 | |
| aoqi@0 | 90 | #endif /* SHARE_VM_GC_IMPLEMENTATION_SHARED_COPYFAILEDINFO_HPP */ |
