1 /*
2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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 };
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1 /*
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSOLDGEN_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSOLDGEN_HPP
27
28 #include "gc_implementation/parallelScavenge/objectStartArray.hpp"
29 #include "gc_implementation/parallelScavenge/psOldGen.hpp"
30 #include "gc_implementation/parallelScavenge/psVirtualspace.hpp"
31 #include "gc_implementation/shared/generationCounters.hpp"
32 #include "gc_implementation/shared/mutableSpace.hpp"
33 #include "gc_implementation/shared/spaceCounters.hpp"
34
35 class ASPSOldGen : public PSOldGen {
36 friend class VMStructs;
37 size_t _gen_size_limit; // Largest size the generation's reserved size
38 // can grow.
39 public:
40 ASPSOldGen(size_t initial_byte_size,
41 size_t minimum_byte_size,
42 size_t byte_size_limit,
43 const char* gen_name, int level);
44 ASPSOldGen(PSVirtualSpace* vs,
45 size_t initial_byte_size,
46 size_t minimum_byte_size,
47 size_t byte_size_limit,
48 const char* gen_name, int level);
49 size_t gen_size_limit() { return _gen_size_limit; }
50 size_t max_gen_size() { return _reserved.byte_size(); }
51 void set_gen_size_limit(size_t v) { _gen_size_limit = v; }
52
53 // After a shrink or expand reset the generation
54 void reset_after_change();
55
56 // Return number of bytes that the virtual space in the generation is willing
57 // to expand or contract. The results from these methods should feed into the
58 // decisions about adjusting the virtual space.
59 size_t available_for_expansion();
60 size_t available_for_contraction();
61
62 // Accessors
63 void set_reserved(MemRegion v) { _reserved = v; }
64
65 // Debugging support
66 virtual const char* short_name() const { return "ASPSOldGen"; }
67 };
68
69 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSOLDGEN_HPP
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