10405
|
1 /*
|
|
2 * Copyright (c) 2012, 2013, 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_IMPLEMENTATION_SHARED_GCTIMER_HPP
|
|
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTIMER_HPP
|
|
27
|
|
28 #include "memory/allocation.hpp"
|
|
29 #include "prims/jni_md.h"
|
|
30 #include "utilities/macros.hpp"
|
|
31
|
|
32 class ConcurrentPhase;
|
|
33 class GCPhase;
|
|
34 class PausePhase;
|
|
35
|
|
36 template <class E> class GrowableArray;
|
|
37
|
|
38 class PhaseVisitor {
|
|
39 public:
|
|
40 virtual void visit(GCPhase* phase) = 0;
|
|
41 virtual void visit(PausePhase* phase) { visit((GCPhase*)phase); }
|
|
42 virtual void visit(ConcurrentPhase* phase) { visit((GCPhase*)phase); }
|
|
43 };
|
|
44
|
|
45 class GCPhase {
|
|
46 const char* _name;
|
|
47 int _level;
|
|
48 jlong _start;
|
|
49 jlong _end;
|
|
50
|
|
51 public:
|
|
52 void set_name(const char* name) { _name = name; }
|
|
53 const char* name() { return _name; }
|
|
54
|
|
55 int level() { return _level; }
|
|
56 void set_level(int level) { _level = level; }
|
|
57
|
|
58 jlong start() { return _start; }
|
|
59 void set_start(jlong time) { _start = time; }
|
|
60
|
|
61 jlong end() { return _end; }
|
|
62 void set_end(jlong time) { _end = time; }
|
|
63
|
|
64 virtual void accept(PhaseVisitor* visitor) = 0;
|
|
65 };
|
|
66
|
|
67 class PausePhase : public GCPhase {
|
|
68 public:
|
|
69 void accept(PhaseVisitor* visitor) {
|
|
70 visitor->visit(this);
|
|
71 }
|
|
72 };
|
|
73
|
|
74 class ConcurrentPhase : public GCPhase {
|
|
75 void accept(PhaseVisitor* visitor) {
|
|
76 visitor->visit(this);
|
|
77 }
|
|
78 };
|
|
79
|
|
80 class PhasesStack {
|
|
81 public:
|
|
82 // FIXME: Temporary set to 5 (used to be 4), since Reference processing needs it.
|
|
83 static const int PHASE_LEVELS = 5;
|
|
84
|
|
85 private:
|
|
86 int _phase_indices[PHASE_LEVELS];
|
|
87 int _next_phase_level;
|
|
88
|
|
89 public:
|
|
90 PhasesStack() { clear(); }
|
|
91 void clear();
|
|
92
|
|
93 void push(int phase_index);
|
|
94 int pop();
|
|
95 int count() const;
|
|
96 };
|
|
97
|
|
98 class TimePartitions {
|
|
99 static const int INITIAL_CAPACITY = 10;
|
|
100
|
|
101 // Currently we only support pause phases.
|
|
102 GrowableArray<PausePhase>* _phases;
|
|
103 PhasesStack _active_phases;
|
|
104
|
|
105 jlong _sum_of_pauses;
|
|
106 jlong _longest_pause;
|
|
107
|
|
108 public:
|
|
109 TimePartitions();
|
|
110 ~TimePartitions();
|
|
111 void clear();
|
|
112
|
|
113 void report_gc_phase_start(const char* name, jlong time);
|
|
114 void report_gc_phase_end(jlong time);
|
|
115
|
|
116 int num_phases() const;
|
|
117 GCPhase* phase_at(int index) const;
|
|
118
|
|
119 jlong sum_of_pauses();
|
|
120 jlong longest_pause();
|
|
121
|
|
122 bool has_active_phases();
|
|
123 private:
|
|
124 void update_statistics(GCPhase* phase);
|
|
125 };
|
|
126
|
|
127 class PhasesIterator {
|
|
128 public:
|
|
129 virtual bool has_next() = 0;
|
|
130 virtual GCPhase* next() = 0;
|
|
131 };
|
|
132
|
|
133 class GCTimer : public ResourceObj {
|
|
134 NOT_PRODUCT(friend class GCTimerTest;)
|
|
135 protected:
|
|
136 jlong _gc_start;
|
|
137 jlong _gc_end;
|
|
138 TimePartitions _time_partitions;
|
|
139
|
|
140 public:
|
|
141 virtual void register_gc_start(jlong time);
|
|
142 virtual void register_gc_end(jlong time);
|
|
143
|
|
144 void register_gc_phase_start(const char* name, jlong time);
|
|
145 void register_gc_phase_end(jlong time);
|
|
146
|
|
147 jlong gc_start() { return _gc_start; }
|
|
148 jlong gc_end() { return _gc_end; }
|
|
149
|
|
150 TimePartitions* time_partitions() { return &_time_partitions; }
|
|
151
|
|
152 long longest_pause();
|
|
153 long sum_of_pauses();
|
|
154
|
|
155 protected:
|
|
156 void register_gc_pause_start(const char* name, jlong time);
|
|
157 void register_gc_pause_end(jlong time);
|
|
158 };
|
|
159
|
|
160 class STWGCTimer : public GCTimer {
|
|
161 public:
|
|
162 virtual void register_gc_start(jlong time);
|
|
163 virtual void register_gc_end(jlong time);
|
|
164 };
|
|
165
|
|
166 class ConcurrentGCTimer : public GCTimer {
|
|
167 public:
|
|
168 void register_gc_pause_start(const char* name, jlong time);
|
|
169 void register_gc_pause_end(jlong time);
|
|
170 };
|
|
171
|
|
172 class TimePartitionPhasesIterator {
|
|
173 TimePartitions* _time_partitions;
|
|
174 int _next;
|
|
175
|
|
176 public:
|
|
177 TimePartitionPhasesIterator(TimePartitions* time_partitions) : _time_partitions(time_partitions), _next(0) { }
|
|
178
|
|
179 virtual bool has_next();
|
|
180 virtual GCPhase* next();
|
|
181 };
|
|
182
|
|
183
|
|
184 /////////////// Unit tests ///////////////
|
|
185
|
|
186 #ifndef PRODUCT
|
|
187
|
|
188 class GCTimerAllTest {
|
|
189 public:
|
|
190 static void all();
|
|
191 };
|
|
192
|
|
193 #endif
|
|
194
|
|
195 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTIMER_HPP
|