1 /*
2 * Copyright (c) 2018, 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_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP
26 #define SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP
27
28 #include "memory/allocation.hpp"
29 #include "runtime/os.hpp"
30
31 // Macros for GC log output formating
32 #define STRDEDUP_OBJECTS_FORMAT UINTX_FORMAT_W(12)
33 #define STRDEDUP_TIME_FORMAT "%.3fs"
34 #define STRDEDUP_TIME_PARAM(time) (time)
35 #define STRDEDUP_TIME_FORMAT_MS "%.3fms"
36 #define STRDEDUP_TIME_PARAM_MS(time) ((time) * MILLIUNITS)
37 #define STRDEDUP_PERCENT_FORMAT "%5.1f%%"
38 #define STRDEDUP_PERCENT_FORMAT_NS "%.1f%%"
39 #define STRDEDUP_BYTES_FORMAT "%8.1f%s"
40 #define STRDEDUP_BYTES_FORMAT_NS "%.1f%s"
41 #define STRDEDUP_BYTES_PARAM(bytes) byte_size_in_proper_unit((double)(bytes)), proper_unit_for_byte_size((bytes))
42
43 //
44 // Statistics gathered by the deduplication thread.
45 //
46 class StringDedupStat : public CHeapObj<mtGC> {
47 protected:
48 // Counters
49 uintx _inspected;
50 uintx _skipped;
51 uintx _hashed;
52 uintx _known;
53 uintx _new;
54 uintx _new_bytes;
55 uintx _deduped;
56 uintx _deduped_bytes;
57 uintx _idle;
58 uintx _exec;
59 uintx _block;
60
61 // Time spent by the deduplication thread in different phases
62 double _start_concurrent;
63 double _end_concurrent;
64 double _start_phase;
65 double _idle_elapsed;
66 double _exec_elapsed;
67 double _block_elapsed;
68
69 public:
70 StringDedupStat();
71
72 void inc_inspected() {
73 _inspected++;
74 }
75
76 void inc_skipped() {
77 _skipped++;
78 }
79
80 void inc_hashed() {
81 _hashed++;
82 }
83
84 void inc_known() {
85 _known++;
86 }
87
88 void inc_new(uintx bytes) {
89 _new++;
90 _new_bytes += bytes;
91 }
92
93 virtual void deduped(oop obj, uintx bytes) {
94 _deduped++;
95 _deduped_bytes += bytes;
96 }
97
98 void mark_idle() {
99 _start_phase = os::elapsedTime();
100 _idle++;
101 }
102
103 void mark_exec() {
104 double now = os::elapsedTime();
105 _idle_elapsed = now - _start_phase;
106 _start_phase = now;
107 _start_concurrent = now;
108 _exec++;
109 }
110
111 void mark_block() {
112 double now = os::elapsedTime();
113 _exec_elapsed += now - _start_phase;
114 _start_phase = now;
115 _block++;
116 }
117
118 void mark_unblock() {
119 double now = os::elapsedTime();
120 _block_elapsed += now - _start_phase;
121 _start_phase = now;
122 }
123
124 void mark_done() {
125 double now = os::elapsedTime();
126 _exec_elapsed += now - _start_phase;
127 _end_concurrent = now;
128 }
129
130 virtual void reset();
131 virtual void add(const StringDedupStat* const stat);
132 virtual void print_statistics(bool total) const;
133
134 static void print_start(const StringDedupStat* last_stat);
135 static void print_end(const StringDedupStat* last_stat, const StringDedupStat* total_stat);
136 };
137
138 #endif // SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP
139