Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/asPSYoungGen.hpp @ 1763:d6f45b55c972
4809552: Optimize Arrays.fill(...)
Reviewed-by: kvn
author | never |
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date | Fri, 27 Aug 2010 17:33:49 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 2003, 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 | |
25 class ASPSYoungGen : public PSYoungGen { | |
26 friend class VMStructs; | |
27 private: | |
28 size_t _gen_size_limit; | |
29 protected: | |
30 virtual size_t available_to_live(); | |
31 | |
32 public: | |
33 ASPSYoungGen(size_t initial_byte_size, | |
34 size_t minimum_byte_size, | |
35 size_t byte_size_limit); | |
36 | |
37 ASPSYoungGen(PSVirtualSpace* vs, | |
38 size_t initial_byte_size, | |
39 size_t minimum_byte_size, | |
40 size_t byte_size_limit); | |
41 | |
42 void initialize(ReservedSpace rs, size_t alignment); | |
43 void initialize_virtual_space(ReservedSpace rs, size_t alignment); | |
44 | |
45 size_t gen_size_limit() { return _gen_size_limit; } | |
46 void set_gen_size_limit(size_t v) { _gen_size_limit = v; } | |
47 | |
48 bool resize_generation(size_t eden_size, size_t survivor_size); | |
49 void resize_spaces(size_t eden_size, size_t survivor_size); | |
50 | |
51 // Adjust eden to be consistent with the virtual space. | |
52 void reset_after_change(); | |
53 | |
54 // Adaptive size policy support | |
55 // Return number of bytes that the generation can expand/contract. | |
56 size_t available_for_expansion(); | |
57 size_t available_for_contraction(); | |
58 | |
59 // Accessors | |
60 void set_reserved(MemRegion v) { _reserved = v; } | |
61 | |
62 // Printing support | |
63 virtual const char* short_name() const { return "ASPSYoungGen"; } | |
64 }; |