1/*
2 * Copyright (c) 2014, 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_SERVICES_NMTCOMMON_HPP
26#define SHARE_SERVICES_NMTCOMMON_HPP
27
28#include "memory/allocation.hpp"
29#include "utilities/align.hpp"
30#include "utilities/globalDefinitions.hpp"
31
32#define CALC_OBJ_SIZE_IN_TYPE(obj, type) (align_up_(sizeof(obj), sizeof(type))/sizeof(type))
33
34// Native memory tracking level
35enum NMT_TrackingLevel {
36 NMT_unknown = 0xFF,
37 NMT_off = 0x00,
38 NMT_minimal = 0x01,
39 NMT_summary = 0x02,
40 NMT_detail = 0x03
41};
42
43// Number of stack frames to capture. This is a
44// build time decision.
45const int NMT_TrackingStackDepth = 4;
46
47// A few common utilities for native memory tracking
48class NMTUtil : AllStatic {
49 public:
50 // Map memory type to index
51 static inline int flag_to_index(MEMFLAGS flag) {
52 const int index = flag & 0xff;
53 assert(index >= 0 && index < (int)mt_number_of_types, "Index out of bounds");
54 return index;
55 }
56
57 // Map memory type to human readable name
58 static const char* flag_to_name(MEMFLAGS flag) {
59 return _memory_type_names[flag_to_index(flag)];
60 }
61
62 // Map an index to memory type
63 static MEMFLAGS index_to_flag(int index) {
64 assert(index >= 0 && index < (int) mt_number_of_types, "Index out of bounds");
65 return (MEMFLAGS)index;
66 }
67
68 // Memory size scale
69 static const char* scale_name(size_t scale);
70 static size_t scale_from_name(const char* scale);
71
72 // Translate memory size in specified scale
73 static size_t amount_in_scale(size_t amount, size_t scale) {
74 return (amount + scale / 2) / scale;
75 }
76 private:
77 static const char* _memory_type_names[mt_number_of_types];
78};
79
80
81#endif // SHARE_SERVICES_NMTCOMMON_HPP
82