Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parNew/asParNewGeneration.hpp @ 6862:8a5ea0a9ccc4
7127708: G1: change task num types from int to uint in concurrent mark
Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich.
Reviewed-by: johnc
Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>
| author | johnc |
|---|---|
| date | Sat, 06 Oct 2012 01:17:44 -0700 |
| parents | f95d63e2154a |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARNEW_ASPARNEWGENERATION_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_PARNEW_ASPARNEWGENERATION_HPP | |
| 27 | |
| 28 #include "gc_implementation/parNew/parNewGeneration.hpp" | |
| 29 #include "gc_implementation/shared/adaptiveSizePolicy.hpp" | |
| 30 | |
| 0 | 31 // A Generation that does parallel young-gen collection extended |
| 32 // for adaptive size policy. | |
| 33 | |
| 34 // Division of generation into spaces | |
| 35 // done by DefNewGeneration::compute_space_boundaries() | |
| 36 // +---------------+ | |
| 37 // | uncommitted | | |
| 38 // |---------------| | |
| 39 // | ss0 | | |
| 40 // |---------------| | |
| 41 // | ss1 | | |
| 42 // |---------------| | |
| 43 // | | | |
| 44 // | eden | | |
| 45 // | | | |
| 46 // +---------------+ <-- low end of VirtualSpace | |
| 47 // | |
| 48 class ASParNewGeneration: public ParNewGeneration { | |
| 49 | |
| 50 size_t _min_gen_size; | |
| 51 | |
| 52 // Resize the generation based on the desired sizes of | |
| 53 // the constituent spaces. | |
| 54 bool resize_generation(size_t eden_size, size_t survivor_size); | |
| 55 // Resize the spaces based on their desired sizes but | |
| 56 // respecting the maximum size of the generation. | |
| 57 void resize_spaces(size_t eden_size, size_t survivor_size); | |
| 58 // Return the byte size remaining to the minimum generation size. | |
| 59 size_t available_to_min_gen(); | |
| 60 // Return the byte size remaining to the live data in the generation. | |
| 61 size_t available_to_live() const; | |
| 62 // Return the byte size that the generation is allowed to shrink. | |
| 63 size_t limit_gen_shrink(size_t bytes); | |
| 64 // Reset the size of the spaces after a shrink of the generation. | |
| 65 void reset_survivors_after_shrink(); | |
| 66 | |
| 67 // Accessor | |
| 68 VirtualSpace* virtual_space() { return &_virtual_space; } | |
| 69 | |
| 70 virtual void adjust_desired_tenuring_threshold(); | |
| 71 | |
| 72 public: | |
| 73 | |
| 74 ASParNewGeneration(ReservedSpace rs, | |
| 75 size_t initial_byte_size, | |
| 76 size_t min_byte_size, | |
| 77 int level); | |
| 78 | |
| 79 virtual const char* short_name() const { return "ASParNew"; } | |
| 80 virtual const char* name() const; | |
| 81 virtual Generation::Name kind() { return ASParNew; } | |
| 82 | |
| 83 // Change the sizes of eden and the survivor spaces in | |
| 84 // the generation. The parameters are desired sizes | |
| 85 // and are not guaranteed to be met. For example, if | |
| 86 // the total is larger than the generation. | |
| 87 void resize(size_t eden_size, size_t survivor_size); | |
| 88 | |
| 89 virtual void compute_new_size(); | |
| 90 | |
| 91 size_t max_gen_size() { return _reserved.byte_size(); } | |
| 92 size_t min_gen_size() const { return _min_gen_size; } | |
| 93 | |
| 94 // Space boundary invariant checker | |
| 95 void space_invariants() PRODUCT_RETURN; | |
| 96 }; | |
| 1972 | 97 |
| 98 #endif // SHARE_VM_GC_IMPLEMENTATION_PARNEW_ASPARNEWGENERATION_HPP |