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_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/gcId.hpp"
31 #include "gc_implementation/shared/gcWhen.hpp"
32 #include "gc_implementation/shared/copyFailedInfo.hpp"
33 #include "memory/allocation.hpp"
34 #include "memory/metaspace.hpp"
35 #include "memory/referenceType.hpp"
36 #if INCLUDE_ALL_GCS
37 #include "gc_implementation/g1/g1YCTypes.hpp"
38 #endif
39 #include "utilities/macros.hpp"
40 #include "utilities/ticks.hpp"
41
42
43 class EvacuationInfo;
44 class GCHeapSummary;
45 class MetaspaceChunkFreeListSummary;
46 class MetaspaceSummary;
47 class PSHeapSummary;
48 class ReferenceProcessorStats;
49 class TimePartitions;
50 class BoolObjectClosure;
51
52 class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
53 private:
54 GCId _gc_id;
55 GCName _name;
56 GCCause::Cause _cause;
57 Ticks _start_timestamp;
58 Ticks _end_timestamp;
59 Tickspan _sum_of_pauses;
60 Tickspan _longest_pause;
61
62 public:
63 SharedGCInfo(GCName name) :
64 _gc_id(GCId::undefined()),
65 _name(name),
66 _cause(GCCause::_last_gc_cause),
67 _start_timestamp(),
68 _end_timestamp(),
69 _sum_of_pauses(),
70 _longest_pause() {
71 }
72
73 void set_gc_id(GCId gc_id) { _gc_id = gc_id; }
74 const GCId& gc_id() const { return _gc_id; }
75
76 void set_start_timestamp(const Ticks& timestamp) { _start_timestamp = timestamp; }
77 const Ticks start_timestamp() const { return _start_timestamp; }
78
79 void set_end_timestamp(const Ticks& timestamp) { _end_timestamp = timestamp; }
80 const Ticks end_timestamp() const { return _end_timestamp; }
81
82 void set_name(GCName name) { _name = name; }
83 GCName name() const { return _name; }
84
85 void set_cause(GCCause::Cause cause) { _cause = cause; }
86 GCCause::Cause cause() const { return _cause; }
87
88 void set_sum_of_pauses(const Tickspan& duration) { _sum_of_pauses = duration; }
89 const Tickspan sum_of_pauses() const { return _sum_of_pauses; }
90
91 void set_longest_pause(const Tickspan& duration) { _longest_pause = duration; }
92 const Tickspan longest_pause() const { return _longest_pause; }
93 };
94
95 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC {
96 void* _dense_prefix;
97 public:
98 ParallelOldGCInfo() : _dense_prefix(NULL) {}
99 void report_dense_prefix(void* addr) {
100 _dense_prefix = addr;
101 }
102 void* dense_prefix() const { return _dense_prefix; }
103 };
104
105 #if INCLUDE_ALL_GCS
106
107 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
108 G1YCType _type;
109 public:
110 G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
111 void set_type(G1YCType type) {
112 _type = type;
113 }
114 G1YCType type() const { return _type; }
115 };
116
117 #endif // INCLUDE_ALL_GCS
118
119 class GCTracer : public ResourceObj {
120 protected:
121 SharedGCInfo _shared_gc_info;
122
123 public:
124 void report_gc_start(GCCause::Cause cause, const Ticks& timestamp);
125 void report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions);
126 void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
127 void report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& metaspace_summary) const;
128 void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
129 void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;
130 bool has_reported_gc_start() const;
131 const GCId& gc_id() { return _shared_gc_info.gc_id(); }
132
133 protected:
134 GCTracer(GCName name) : _shared_gc_info(name) {}
135 void report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp);
136 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
137
138 private:
139 void send_garbage_collection_event() const;
140 void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
141 void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
142 void send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const;
143 void send_reference_stats_event(ReferenceType type, size_t count) const;
144 void send_phase_events(TimePartitions* time_partitions) const;
145 };
146
147 class YoungGCTracer : public GCTracer {
148 static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
149
150 uint _tenuring_threshold;
151
152 protected:
153 YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
154 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
155
156 public:
157 void report_promotion_failed(const PromotionFailedInfo& pf_info);
158 void report_tenuring_threshold(const uint tenuring_threshold);
159 /*
160 * Methods for reporting Promotion in new or outside PLAB Events.
161 *
162 * The object age is always required as it is not certain that the mark word
163 * of the oop can be trusted at this stage.
164 *
165 * obj_size is the size of the promoted object in bytes.
166 *
167 * tenured should be true if the object has been promoted to the old
168 * space during this GC, if the object is copied to survivor space
169 * from young space or survivor space (aging) tenured should be false.
170 *
171 * plab_size is the size of the newly allocated PLAB in bytes.
172 */
173 bool should_report_promotion_events() const;
174 bool should_report_promotion_in_new_plab_event() const;
175 bool should_report_promotion_outside_plab_event() const;
176 void report_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
177 uint age, bool tenured,
178 size_t plab_size) const;
179 void report_promotion_outside_plab_event(Klass* klass, size_t obj_size,
180 uint age, bool tenured) const;
181
182 private:
183 void send_young_gc_event() const;
184 void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
185 bool should_send_promotion_in_new_plab_event() const;
186 bool should_send_promotion_outside_plab_event() const;
187 void send_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
188 uint age, bool tenured,
189 size_t plab_size) const;
190 void send_promotion_outside_plab_event(Klass* klass, size_t obj_size,
191 uint age, bool tenured) const;
192 };
193
194 class OldGCTracer : public GCTracer {
195 protected:
196 OldGCTracer(GCName name) : GCTracer(name) {}
197 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
198
199 public:
200 void report_concurrent_mode_failure();
201
202 private:
203 void send_old_gc_event() const;
204 void send_concurrent_mode_failure_event();
205 };
206
207 class ParallelOldTracer : public OldGCTracer {
208 ParallelOldGCInfo _parallel_old_gc_info;
209
210 public:
211 ParallelOldTracer() : OldGCTracer(ParallelOld) {}
212 void report_dense_prefix(void* dense_prefix);
213
214 protected:
215 void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
216
217 private:
218 void send_parallel_old_event() const;
219 };
220
221 class SerialOldTracer : public OldGCTracer {
222 public:
223 SerialOldTracer() : OldGCTracer(SerialOld) {}
224 };
225
226 class ParallelScavengeTracer : public YoungGCTracer {
227 public:
228 ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}
229 };
230
231 class DefNewTracer : public YoungGCTracer {
232 public:
233 DefNewTracer() : YoungGCTracer(DefNew) {}
234 };
235
236 class ParNewTracer : public YoungGCTracer {
237 public:
238 ParNewTracer() : YoungGCTracer(ParNew) {}
239 };
240
241 #if INCLUDE_ALL_GCS
242 class G1MMUTracer : public AllStatic {
243 static void send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms);
244
245 public:
246 static void report_mmu(double time_slice_sec, double gc_time_sec, double max_time_sec);
247 };
248
249 class G1NewTracer : public YoungGCTracer {
250 G1YoungGCInfo _g1_young_gc_info;
251
252 public:
253 G1NewTracer() : YoungGCTracer(G1New) {}
254
255 void report_yc_type(G1YCType type);
256 void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
257 void report_evacuation_info(EvacuationInfo* info);
258 void report_evacuation_failed(EvacuationFailedInfo& ef_info);
259
260 private:
261 void send_g1_young_gc_event();
262 void send_evacuation_info_event(EvacuationInfo* info);
263 void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const;
264 };
265 #endif
266
267 class CMSTracer : public OldGCTracer {
268 public:
269 CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}
270 };
271
272 class G1OldTracer : public OldGCTracer {
273 public:
274 G1OldTracer() : OldGCTracer(G1Old) {}
275 };
276
277 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP