Thu, 12 Jun 2008 13:50:55 -0700
Merge
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2001-2004 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // The specification of a generation. This class also encapsulates |
duke@435 | 26 | // some generation-specific behavior. This is done here rather than as a |
duke@435 | 27 | // virtual function of Generation because these methods are needed in |
duke@435 | 28 | // initialization of the Generations. |
duke@435 | 29 | class GenerationSpec : public CHeapObj { |
duke@435 | 30 | friend class VMStructs; |
duke@435 | 31 | private: |
duke@435 | 32 | Generation::Name _name; |
duke@435 | 33 | size_t _init_size; |
duke@435 | 34 | size_t _max_size; |
duke@435 | 35 | |
duke@435 | 36 | public: |
duke@435 | 37 | GenerationSpec(Generation::Name name, size_t init_size, size_t max_size) { |
duke@435 | 38 | _name = name; |
duke@435 | 39 | _init_size = init_size; |
duke@435 | 40 | _max_size = max_size; |
duke@435 | 41 | } |
duke@435 | 42 | |
duke@435 | 43 | Generation* init(ReservedSpace rs, int level, GenRemSet* remset); |
duke@435 | 44 | |
duke@435 | 45 | // Accessors |
duke@435 | 46 | Generation::Name name() const { return _name; } |
duke@435 | 47 | size_t init_size() const { return _init_size; } |
duke@435 | 48 | void set_init_size(size_t size) { _init_size = size; } |
duke@435 | 49 | size_t max_size() const { return _max_size; } |
duke@435 | 50 | void set_max_size(size_t size) { _max_size = size; } |
duke@435 | 51 | |
duke@435 | 52 | // Alignment |
duke@435 | 53 | void align(size_t alignment) { |
duke@435 | 54 | set_init_size(align_size_up(init_size(), alignment)); |
duke@435 | 55 | set_max_size(align_size_up(max_size(), alignment)); |
duke@435 | 56 | } |
duke@435 | 57 | |
duke@435 | 58 | // Return the number of regions contained in the generation which |
duke@435 | 59 | // might need to be independently covered by a remembered set. |
duke@435 | 60 | virtual int n_covered_regions() const { return 1; } |
duke@435 | 61 | }; |
duke@435 | 62 | |
duke@435 | 63 | typedef GenerationSpec* GenerationSpecPtr; |
duke@435 | 64 | |
duke@435 | 65 | // The specification of a permanent generation. This class is very |
duke@435 | 66 | // similar to GenerationSpec in use. Due to PermGen's not being a |
duke@435 | 67 | // true Generation, we cannot combine the spec classes either. |
duke@435 | 68 | class PermanentGenerationSpec : public CHeapObj { |
duke@435 | 69 | friend class VMStructs; |
duke@435 | 70 | private: |
duke@435 | 71 | PermGen::Name _name; |
duke@435 | 72 | size_t _init_size; |
duke@435 | 73 | size_t _max_size; |
duke@435 | 74 | size_t _read_only_size; |
duke@435 | 75 | size_t _read_write_size; |
duke@435 | 76 | size_t _misc_data_size; |
duke@435 | 77 | size_t _misc_code_size; |
duke@435 | 78 | bool _enable_shared_spaces; |
duke@435 | 79 | |
duke@435 | 80 | enum { |
duke@435 | 81 | _n_spaces = 2 |
duke@435 | 82 | }; |
duke@435 | 83 | |
duke@435 | 84 | public: |
duke@435 | 85 | PermanentGenerationSpec(PermGen::Name name, size_t init_size, |
duke@435 | 86 | size_t max_size, size_t read_only_size, |
duke@435 | 87 | size_t read_write_size, size_t misc_data_size, |
duke@435 | 88 | size_t misc_code_size); |
duke@435 | 89 | |
duke@435 | 90 | PermGen* init(ReservedSpace rs, size_t init_size, GenRemSet* remset); |
duke@435 | 91 | |
duke@435 | 92 | void disable_sharing() { |
duke@435 | 93 | _enable_shared_spaces = false; |
duke@435 | 94 | _read_only_size = 0; |
duke@435 | 95 | _read_write_size = 0; |
duke@435 | 96 | _misc_data_size = 0; |
duke@435 | 97 | _misc_code_size = 0; |
duke@435 | 98 | } |
duke@435 | 99 | |
duke@435 | 100 | // Accessors |
duke@435 | 101 | PermGen::Name name() const { return _name; } |
duke@435 | 102 | size_t init_size() const { return _init_size; } |
duke@435 | 103 | void set_init_size(size_t size) { _init_size = size; } |
duke@435 | 104 | |
duke@435 | 105 | // Max size for user DOES NOT include shared spaces. |
duke@435 | 106 | // Max size for space allocation DOES include shared spaces. |
duke@435 | 107 | size_t max_size() const { |
duke@435 | 108 | return _max_size + _read_only_size + _read_write_size; |
duke@435 | 109 | } |
duke@435 | 110 | |
duke@435 | 111 | // Need one covered region for the main space, and one for the shared |
duke@435 | 112 | // spaces (together). |
duke@435 | 113 | int n_covered_regions() const { return 2; } |
duke@435 | 114 | |
duke@435 | 115 | void align(size_t alignment); |
duke@435 | 116 | |
duke@435 | 117 | size_t read_only_size() const { return _read_only_size; } |
duke@435 | 118 | size_t read_write_size() const { return _read_write_size; } |
duke@435 | 119 | size_t misc_data_size() const { return _misc_data_size; } |
duke@435 | 120 | size_t misc_code_size() const { return _misc_code_size; } |
duke@435 | 121 | bool enable_shared_spaces() const { return _enable_shared_spaces; } |
duke@435 | 122 | }; |