1 /*
2 * Copyright (c) 2012, 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_GCTRACE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
27
28 #include "gc_interface/gcCause.hpp"
29 #include "gc_interface/gcName.hpp"
30 #include "gc_implementation/shared/gcWhen.hpp"
31 #include "gc_implementation/shared/copyFailedInfo.hpp"
32 #include "memory/allocation.hpp"
33 #include "memory/referenceType.hpp"
34 #ifndef SERIALGC
35 #include "gc_implementation/g1/g1YCTypes.hpp"
36 #endif
37
38 typedef uint GCId;
39
40 class EvacuationInfo;
41 class GCHeapSummary;
42 class PermGenSummary;
43 class PSHeapSummary;
44 class ReferenceProcessorStats;
45 class TimePartitions;
46 class BoolObjectClosure;
47
48 class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
49 static const jlong UNSET_TIMESTAMP = -1;
50
51 public:
52 static const GCId UNSET_GCID = (GCId)-1;
53
54 private:
55 GCId _id;
56 GCName _name;
57 GCCause::Cause _cause;
58 jlong _start_timestamp;
59 jlong _end_timestamp;
60 jlong _sum_of_pauses;
61 jlong _longest_pause;
62
63 public:
64 SharedGCInfo(GCName name) : _id(UNSET_GCID), _name(name), _cause(GCCause::_last_gc_cause),
65 _start_timestamp(UNSET_TIMESTAMP), _end_timestamp(UNSET_TIMESTAMP), _sum_of_pauses(0), _longest_pause(0) {}
66
67 void set_id(GCId id) { _id = id; }
68 GCId id() const { return _id; }
69
70 void set_start_timestamp(jlong timestamp) { _start_timestamp = timestamp; }
71 jlong start_timestamp() const { return _start_timestamp; }
72
73 void set_end_timestamp(jlong timestamp) { _end_timestamp = timestamp; }
74 jlong end_timestamp() const { return _end_timestamp; }
75
76 void set_name(GCName name) { _name = name; }
77 GCName name() const { return _name; }
78
79 void set_cause(GCCause::Cause cause) { _cause = cause; }
80 GCCause::Cause cause() const { return _cause; }
81
82 void set_sum_of_pauses(jlong duration) { _sum_of_pauses = duration; }
83 jlong sum_of_pauses() const { return _sum_of_pauses; }
84
85 void set_longest_pause(jlong duration) { _longest_pause = duration; }
86 jlong longest_pause() const { return _longest_pause; }
87 };
88
89 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC {
90 void* _dense_prefix;
91 public:
92 ParallelOldGCInfo() : _dense_prefix(NULL) {}
93 void report_dense_prefix(void* addr) {
94 _dense_prefix = addr;
95 }
96 void* dense_prefix() const { return _dense_prefix; }
97 };
98
99 #ifndef SERIALGC
100
101 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
102 G1YCType _type;
103 public:
104 G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
105 void set_type(G1YCType type) {
106 _type = type;
107 }
108 G1YCType type() const { return _type; }
109 };
110
111 #endif // SERIALGC
112
113 class GCTracer : public ResourceObj {
114 friend class ObjectCountEventSenderClosure;
115 protected:
116 SharedGCInfo _shared_gc_info;
117
118 public:
119 void report_gc_start(GCCause::Cause cause, jlong timestamp);
120 void report_gc_end(jlong timestamp, TimePartitions* time_partitions);
121 void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const PermGenSummary& perm_gen_summary) const;
122 void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
123 void report_object_count_after_gc(BoolObjectClosure* object_filter);
124
125 bool has_reported_gc_start() const;
126
127 protected:
128 GCTracer(GCName name) : _shared_gc_info(name) {}
129 virtual void report_gc_start_impl(GCCause::Cause cause, jlong timestamp);
130 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
131
132 private:
133 void send_garbage_collection_event() const;
134 void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
135 void send_perm_gen_summary_event(GCWhen::Type when, const PermGenSummary& perm_gen_summary) const;
136 void send_reference_stats_event(ReferenceType type, size_t count) const;
137 void send_phase_events(TimePartitions* time_partitions) const;
138 void send_object_count_after_gc_event(klassOop klass, jlong count, julong total_size) const;
139 bool should_send_object_count_after_gc_event() const;
140 };
141
142 class YoungGCTracer : public GCTracer {
143 static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
144
145 uint _tenuring_threshold;
146
147 protected:
148 YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
149 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
150
151 public:
152 void report_promotion_failed(const PromotionFailedInfo& pf_info);
153 void report_tenuring_threshold(const uint tenuring_threshold);
154
155 private:
156 void send_young_gc_event() const;
157 void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
158 };
159
160 class OldGCTracer : public GCTracer {
161 protected:
162 OldGCTracer(GCName name) : GCTracer(name) {}
163 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
164
165 public:
166 void report_concurrent_mode_failure();
167
168 private:
169 void send_old_gc_event() const;
170 void send_concurrent_mode_failure_event();
171 };
172
173 class ParallelOldTracer : public OldGCTracer {
174 ParallelOldGCInfo _parallel_old_gc_info;
175
176 public:
177 ParallelOldTracer() : OldGCTracer(ParallelOld) {}
178 void report_dense_prefix(void* dense_prefix);
179
180 protected:
181 void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
182
183 private:
184 void send_parallel_old_event() const;
185 };
186
187 class SerialOldTracer : public OldGCTracer {
188 public:
189 SerialOldTracer() : OldGCTracer(SerialOld) {}
190 };
191
192 class ParallelScavengeTracer : public YoungGCTracer {
193 public:
194 ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}
195 };
196
197 class DefNewTracer : public YoungGCTracer {
198 public:
199 DefNewTracer() : YoungGCTracer(DefNew) {}
200 };
201
202 class ParNewTracer : public YoungGCTracer {
203 public:
204 ParNewTracer() : YoungGCTracer(ParNew) {}
205 };
206
207 #ifndef SERIALGC
208 class G1NewTracer : public YoungGCTracer {
209 G1YoungGCInfo _g1_young_gc_info;
210
211 public:
212 G1NewTracer() : YoungGCTracer(G1New) {}
213
214 void report_yc_type(G1YCType type);
215 void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
216 void report_evacuation_info(EvacuationInfo* info);
217 void report_evacuation_failed(EvacuationFailedInfo& ef_info);
218
219 private:
220 void send_g1_young_gc_event();
221 void send_evacuation_info_event(EvacuationInfo* info);
222 void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const;
223 };
224 #endif
225
226 class CMSTracer : public OldGCTracer {
227 public:
228 CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}
229 };
230
231 class G1OldTracer : public OldGCTracer {
232 public:
233 G1OldTracer() : OldGCTracer(G1Old) {}
234 };
235
236 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP