Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/memory/generationSpec.hpp@710a3c8b516e (annotated)
src/share/vm/memory/generationSpec.hpp
Tue, 08 Aug 2017 15:57:29 +0800
- author
- aoqi
- date
- Tue, 08 Aug 2017 15:57:29 +0800
- changeset 6876
- 710a3c8b516e
- parent 4037
- da91efe96a93
- parent 0
- f90c822e73f8
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2001, 2012, 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_MEMORY_GENERATIONSPEC_HPP |
| aoqi@0 | 26 | #define SHARE_VM_MEMORY_GENERATIONSPEC_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "memory/generation.hpp" |
| aoqi@0 | 29 | |
| aoqi@0 | 30 | // The specification of a generation. This class also encapsulates |
| aoqi@0 | 31 | // some generation-specific behavior. This is done here rather than as a |
| aoqi@0 | 32 | // virtual function of Generation because these methods are needed in |
| aoqi@0 | 33 | // initialization of the Generations. |
| aoqi@0 | 34 | class GenerationSpec : public CHeapObj<mtGC> { |
| aoqi@0 | 35 | friend class VMStructs; |
| aoqi@0 | 36 | private: |
| aoqi@0 | 37 | Generation::Name _name; |
| aoqi@0 | 38 | size_t _init_size; |
| aoqi@0 | 39 | size_t _max_size; |
| aoqi@0 | 40 | |
| aoqi@0 | 41 | public: |
| aoqi@0 | 42 | GenerationSpec(Generation::Name name, size_t init_size, size_t max_size) { |
| aoqi@0 | 43 | _name = name; |
| aoqi@0 | 44 | _init_size = init_size; |
| aoqi@0 | 45 | _max_size = max_size; |
| aoqi@0 | 46 | } |
| aoqi@0 | 47 | |
| aoqi@0 | 48 | Generation* init(ReservedSpace rs, int level, GenRemSet* remset); |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | // Accessors |
| aoqi@0 | 51 | Generation::Name name() const { return _name; } |
| aoqi@0 | 52 | size_t init_size() const { return _init_size; } |
| aoqi@0 | 53 | void set_init_size(size_t size) { _init_size = size; } |
| aoqi@0 | 54 | size_t max_size() const { return _max_size; } |
| aoqi@0 | 55 | void set_max_size(size_t size) { _max_size = size; } |
| aoqi@0 | 56 | |
| aoqi@0 | 57 | // Alignment |
| aoqi@0 | 58 | void align(size_t alignment) { |
| aoqi@0 | 59 | set_init_size(align_size_up(init_size(), alignment)); |
| aoqi@0 | 60 | set_max_size(align_size_up(max_size(), alignment)); |
| aoqi@0 | 61 | } |
| aoqi@0 | 62 | |
| aoqi@0 | 63 | // Return the number of regions contained in the generation which |
| aoqi@0 | 64 | // might need to be independently covered by a remembered set. |
| aoqi@0 | 65 | virtual int n_covered_regions() const { return 1; } |
| aoqi@0 | 66 | }; |
| aoqi@0 | 67 | |
| aoqi@0 | 68 | typedef GenerationSpec* GenerationSpecPtr; |
| aoqi@0 | 69 | |
| aoqi@0 | 70 | #endif // SHARE_VM_MEMORY_GENERATIONSPEC_HPP |
