Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/asPSOldGen.hpp @ 1656:4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
Summary: G1 was not handling explicit GCs correctly in many ways. It does now. See the CR for the list of improvements contained in this changeset.
Reviewed-by: iveresov, ysr, johnc
author | tonyp |
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date | Mon, 28 Jun 2010 14:13:17 -0400 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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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. |
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5 * This code is free software; you can redistribute it and/or modify it | |
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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). | |
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15 * You should have received a copy of the GNU General Public License version | |
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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 ASPSOldGen : public PSOldGen { | |
26 friend class VMStructs; | |
27 size_t _gen_size_limit; // Largest size the generation's reserved size | |
28 // can grow. | |
29 public: | |
30 ASPSOldGen(size_t initial_byte_size, | |
31 size_t minimum_byte_size, | |
32 size_t byte_size_limit, | |
33 const char* gen_name, int level); | |
34 ASPSOldGen(PSVirtualSpace* vs, | |
35 size_t initial_byte_size, | |
36 size_t minimum_byte_size, | |
37 size_t byte_size_limit, | |
38 const char* gen_name, int level); | |
39 size_t gen_size_limit() { return _gen_size_limit; } | |
40 size_t max_gen_size() { return _reserved.byte_size(); } | |
41 void set_gen_size_limit(size_t v) { _gen_size_limit = v; } | |
42 | |
43 // After a shrink or expand reset the generation | |
44 void reset_after_change(); | |
45 | |
46 // Return number of bytes that the virtual space in the generation is willing | |
47 // to expand or contract. The results from these methods should feed into the | |
48 // decisions about adjusting the virtual space. | |
49 size_t available_for_expansion(); | |
50 size_t available_for_contraction(); | |
51 | |
52 // Accessors | |
53 void set_reserved(MemRegion v) { _reserved = v; } | |
54 | |
55 // Debugging support | |
56 virtual const char* short_name() const { return "ASPSOldGen"; } | |
57 }; |