1 /*
2 * Copyright (c) 2020, 2022, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2020, 2022 SAP SE. All rights reserved.
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_MEMORY_METASPACE_RUNNINGCOUNTERS_HPP
27 #define SHARE_MEMORY_METASPACE_RUNNINGCOUNTERS_HPP
28
29 #include "memory/allStatic.hpp"
30 #include "memory/metaspace/counters.hpp"
31
32 namespace metaspace {
33
34 // This class is a convenience interface for accessing global metaspace counters.
35 class RunningCounters : public AllStatic {
36
37 static SizeAtomicCounter _used_class_counter;
38 static SizeAtomicCounter _used_nonclass_counter;
39
40 public:
41
42 // ---- virtual memory -----
43
44 // Return reserved size, in words, for Metaspace
45 static size_t reserved_words();
46 static size_t reserved_words_class();
47 static size_t reserved_words_nonclass();
48
49 // Return total committed size, in words, for Metaspace
50 static size_t committed_words();
51 static size_t committed_words_class();
52 static size_t committed_words_nonclass();
53
54 // ---- used chunks -----
55
56 // Returns size, in words, used for metadata.
57 static size_t used_words();
58 static size_t used_words_class();
59 static size_t used_words_nonclass();
60
61 // ---- free chunks -----
62
63 // Returns size, in words, of all chunks in all freelists.
64 static size_t free_chunks_words();
65 static size_t free_chunks_words_class();
66 static size_t free_chunks_words_nonclass();
67
68 // Direct access to the counters.
69 static SizeAtomicCounter* used_nonclass_counter() { return &_used_nonclass_counter; }
70 static SizeAtomicCounter* used_class_counter() { return &_used_class_counter; }
71
72 };
73
74 } // namespace metaspace
75
76 #endif // SHARE_MEMORY_METASPACE_RUNNINGCOUNTERS_HPP