0
|
1 /*
|
|
2 * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
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 };
|