1/*
2 * Copyright (c) 2012, 2019, 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_GC_SHARED_GCCONFIGURATION_HPP
26#define SHARE_GC_SHARED_GCCONFIGURATION_HPP
27
28#include "gc/shared/gcName.hpp"
29#include "oops/compressedOops.hpp"
30#include "utilities/globalDefinitions.hpp"
31
32class GCConfiguration {
33 public:
34 GCName young_collector() const;
35 GCName old_collector() const;
36 uint num_parallel_gc_threads() const;
37 uint num_concurrent_gc_threads() const;
38 bool uses_dynamic_gc_threads() const;
39 bool is_explicit_gc_concurrent() const;
40 bool is_explicit_gc_disabled() const;
41 uintx gc_time_ratio() const;
42
43 bool has_pause_target_default_value() const;
44 uintx pause_target() const;
45};
46
47class GCTLABConfiguration {
48 public:
49 bool uses_tlabs() const;
50 size_t min_tlab_size() const;
51 uint tlab_refill_waste_limit() const;
52};
53
54class GCSurvivorConfiguration {
55 public:
56 intx initial_tenuring_threshold() const;
57 intx max_tenuring_threshold() const;
58};
59
60class GCHeapConfiguration {
61 public:
62 size_t max_size() const;
63 size_t min_size() const;
64 size_t initial_size() const;
65 bool uses_compressed_oops() const;
66 CompressedOops::Mode narrow_oop_mode() const;
67 uint object_alignment_in_bytes() const;
68 int heap_address_size_in_bits() const;
69};
70
71class GCYoungGenerationConfiguration {
72 public:
73 bool has_max_size_default_value() const;
74 uintx max_size() const;
75
76 uintx min_size() const;
77 intx new_ratio() const;
78};
79
80#endif // SHARE_GC_SHARED_GCCONFIGURATION_HPP
81