1/*
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26#ifndef SHARE_GC_SHARED_GCARGUMENTS_HPP
27#define SHARE_GC_SHARED_GCARGUMENTS_HPP
28
29#include "memory/allocation.hpp"
30
31class CollectedHeap;
32
33extern size_t HeapAlignment;
34extern size_t SpaceAlignment;
35
36class GCArguments {
37protected:
38 // Initialize HeapAlignment, SpaceAlignment, and extra alignments (E.g. GenAlignment)
39 virtual void initialize_alignments() = 0;
40 virtual void initialize_heap_flags_and_sizes();
41 virtual void initialize_size_info();
42
43 DEBUG_ONLY(void assert_flags();)
44 DEBUG_ONLY(void assert_size_info();)
45
46public:
47 virtual void initialize();
48 virtual size_t conservative_max_heap_alignment() = 0;
49 virtual CollectedHeap* create_heap() = 0;
50
51 void initialize_heap_sizes();
52
53 static size_t compute_heap_alignment();
54
55 static bool check_args_consistency();
56};
57
58#endif // SHARE_GC_SHARED_GCARGUMENTS_HPP
59