1 /*
2 * Copyright (c) 2016, 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 #include "precompiled.hpp"
26 #include "classfile/javaClasses.inline.hpp"
27 #include "code/codeBlob.hpp"
28 #include "code/codeCache.hpp"
29 #include "gc/shared/gcCause.hpp"
30 #include "gc/shared/gcName.hpp"
31 #include "gc/shared/gcTrace.hpp"
32 #include "gc/shared/gcWhen.hpp"
33 #include "jfr/leakprofiler/leakProfiler.hpp"
34 #include "jfr/recorder/checkpoint/jfrCheckpointWriter.hpp"
35 #include "jfr/recorder/checkpoint/types/jfrType.hpp"
36 #include "jfr/recorder/jfrRecorder.hpp"
37 #include "jfr/recorder/checkpoint/types/jfrThreadGroup.hpp"
38 #include "jfr/recorder/checkpoint/types/jfrThreadState.hpp"
39 #include "jfr/support/jfrThreadLocal.hpp"
40 #include "jfr/writers/jfrJavaEventWriter.hpp"
41 #include "jfr/utilities/jfrThreadIterator.hpp"
42 #include "memory/metaspaceGCThresholdUpdater.hpp"
43 #include "memory/referenceType.hpp"
44 #include "memory/universe.hpp"
45 #include "oops/compressedOops.hpp"
46 #include "runtime/flags/jvmFlag.hpp"
47 #include "runtime/mutexLocker.hpp"
48 #include "runtime/osThread.hpp"
49 #include "runtime/safepoint.hpp"
50 #include "runtime/synchronizer.hpp"
51 #include "runtime/thread.inline.hpp"
52 #include "runtime/vmOperations.hpp"
53
54 #ifdef COMPILER2
55 #include "opto/compile.hpp"
56 #include "opto/node.hpp"
57 #endif
58
59 // Requires a ResourceMark for get_thread_name/as_utf8
60 class JfrCheckpointThreadClosure : public ThreadClosure {
61 private:
62 JfrCheckpointWriter& _writer;
63 JfrCheckpointContext _ctx;
64 const int64_t _count_position;
65 Thread* const _curthread;
66 u4 _count;
67
68 public:
69 JfrCheckpointThreadClosure(JfrCheckpointWriter& writer) : _writer(writer),
70 _ctx(writer.context()),
71 _count_position(writer.reserve(sizeof(u4))),
72 _curthread(Thread::current()),
73 _count(0) {
74 }
75
76 ~JfrCheckpointThreadClosure() {
77 if (_count == 0) {
78 // restore
79 _writer.set_context(_ctx);
80 return;
81 }
82 _writer.write_count(_count, _count_position);
83 }
84
85 void do_thread(Thread* t);
86 };
87
88 void JfrCheckpointThreadClosure::do_thread(Thread* t) {
89 assert(t != NULL, "invariant");
90 ++_count;
91 _writer.write_key(JfrThreadId::jfr_id(t));
92 const char* const name = JfrThreadName::name(t);
93 assert(name != NULL, "invariant");
94 _writer.write(name);
95 _writer.write<traceid>(JfrThreadId::os_id(t));
96 if (t->is_Java_thread()) {
97 _writer.write(name);
98 _writer.write(JfrThreadId::id(t));
99 _writer.write(JfrThreadGroup::thread_group_id((JavaThread*)t, _curthread));
100 return;
101 }
102 _writer.write((const char*)NULL); // java name
103 _writer.write((traceid)0); // java thread id
104 _writer.write((traceid)0); // java thread group
105 }
106
107 void JfrThreadConstantSet::serialize(JfrCheckpointWriter& writer) {
108 JfrCheckpointThreadClosure tc(writer);
109 JfrJavaThreadIterator javathreads;
110 while (javathreads.has_next()) {
111 tc.do_thread(javathreads.next());
112 }
113 JfrNonJavaThreadIterator nonjavathreads;
114 while (nonjavathreads.has_next()) {
115 tc.do_thread(nonjavathreads.next());
116 }
117 }
118
119 void JfrThreadGroupConstant::serialize(JfrCheckpointWriter& writer) {
120 JfrThreadGroup::serialize(writer);
121 }
122
123 static const char* flag_value_origin_to_string(JVMFlag::Flags origin) {
124 switch (origin) {
125 case JVMFlag::DEFAULT: return "Default";
126 case JVMFlag::COMMAND_LINE: return "Command line";
127 case JVMFlag::ENVIRON_VAR: return "Environment variable";
128 case JVMFlag::CONFIG_FILE: return "Config file";
129 case JVMFlag::MANAGEMENT: return "Management";
130 case JVMFlag::ERGONOMIC: return "Ergonomic";
131 case JVMFlag::ATTACH_ON_DEMAND: return "Attach on demand";
132 case JVMFlag::INTERNAL: return "Internal";
133 case JVMFlag::JIMAGE_RESOURCE: return "JImage resource";
134 default: ShouldNotReachHere(); return "";
135 }
136 }
137
138 void FlagValueOriginConstant::serialize(JfrCheckpointWriter& writer) {
139 static const u4 nof_entries = JVMFlag::LAST_VALUE_ORIGIN + 1;
140 writer.write_count(nof_entries);
141 for (u4 i = 0; i < nof_entries; ++i) {
142 writer.write_key(i);
143 writer.write(flag_value_origin_to_string((JVMFlag::Flags)i));
144 }
145 }
146
147 void MonitorInflateCauseConstant::serialize(JfrCheckpointWriter& writer) {
148 static const u4 nof_entries = ObjectSynchronizer::inflate_cause_nof;
149 writer.write_count(nof_entries);
150 for (u4 i = 0; i < nof_entries; ++i) {
151 writer.write_key(i);
152 writer.write(ObjectSynchronizer::inflate_cause_name((ObjectSynchronizer::InflateCause)i));
153 }
154 }
155
156 void GCCauseConstant::serialize(JfrCheckpointWriter& writer) {
157 static const u4 nof_entries = GCCause::_last_gc_cause;
158 writer.write_count(nof_entries);
159 for (u4 i = 0; i < nof_entries; ++i) {
160 writer.write_key(i);
161 writer.write(GCCause::to_string((GCCause::Cause)i));
162 }
163 }
164
165 void GCNameConstant::serialize(JfrCheckpointWriter& writer) {
166 static const u4 nof_entries = GCNameEndSentinel;
167 writer.write_count(nof_entries);
168 for (u4 i = 0; i < nof_entries; ++i) {
169 writer.write_key(i);
170 writer.write(GCNameHelper::to_string((GCName)i));
171 }
172 }
173
174 void GCWhenConstant::serialize(JfrCheckpointWriter& writer) {
175 static const u4 nof_entries = GCWhen::GCWhenEndSentinel;
176 writer.write_count(nof_entries);
177 for (u4 i = 0; i < nof_entries; ++i) {
178 writer.write_key(i);
179 writer.write(GCWhen::to_string((GCWhen::Type)i));
180 }
181 }
182
183 void GCThresholdUpdaterConstant::serialize(JfrCheckpointWriter& writer) {
184 static const u4 nof_entries = MetaspaceGCThresholdUpdater::Last;
185 writer.write_count(nof_entries);
186 for (u4 i = 0; i < nof_entries; ++i) {
187 writer.write_key(i);
188 writer.write(MetaspaceGCThresholdUpdater::to_string((MetaspaceGCThresholdUpdater::Type)i));
189 }
190 }
191
192 void MetadataTypeConstant::serialize(JfrCheckpointWriter& writer) {
193 static const u4 nof_entries = Metaspace::MetadataTypeCount;
194 writer.write_count(nof_entries);
195 for (u4 i = 0; i < nof_entries; ++i) {
196 writer.write_key(i);
197 writer.write(Metaspace::metadata_type_name((Metaspace::MetadataType)i));
198 }
199 }
200
201 void MetaspaceObjectTypeConstant::serialize(JfrCheckpointWriter& writer) {
202 static const u4 nof_entries = MetaspaceObj::_number_of_types;
203 writer.write_count(nof_entries);
204 for (u4 i = 0; i < nof_entries; ++i) {
205 writer.write_key(i);
206 writer.write(MetaspaceObj::type_name((MetaspaceObj::Type)i));
207 }
208 }
209
210 static const char* reference_type_to_string(ReferenceType rt) {
211 switch (rt) {
212 case REF_NONE: return "None reference";
213 case REF_OTHER: return "Other reference";
214 case REF_SOFT: return "Soft reference";
215 case REF_WEAK: return "Weak reference";
216 case REF_FINAL: return "Final reference";
217 case REF_PHANTOM: return "Phantom reference";
218 default:
219 ShouldNotReachHere();
220 return NULL;
221 }
222 }
223
224 void ReferenceTypeConstant::serialize(JfrCheckpointWriter& writer) {
225 static const u4 nof_entries = REF_PHANTOM + 1;
226 writer.write_count(nof_entries);
227 for (u4 i = 0; i < nof_entries; ++i) {
228 writer.write_key(i);
229 writer.write(reference_type_to_string((ReferenceType)i));
230 }
231 }
232
233 void NarrowOopModeConstant::serialize(JfrCheckpointWriter& writer) {
234 static const u4 nof_entries = CompressedOops::HeapBasedNarrowOop + 1;
235 writer.write_count(nof_entries);
236 for (u4 i = 0; i < nof_entries; ++i) {
237 writer.write_key(i);
238 writer.write(CompressedOops::mode_to_string((CompressedOops::Mode)i));
239 }
240 }
241
242 void CompilerPhaseTypeConstant::serialize(JfrCheckpointWriter& writer) {
243 #ifdef COMPILER2
244 static const u4 nof_entries = PHASE_NUM_TYPES;
245 writer.write_count(nof_entries);
246 for (u4 i = 0; i < nof_entries; ++i) {
247 writer.write_key(i);
248 writer.write(CompilerPhaseTypeHelper::to_string((CompilerPhaseType)i));
249 }
250 #endif
251 }
252
253 void CodeBlobTypeConstant::serialize(JfrCheckpointWriter& writer) {
254 static const u4 nof_entries = CodeBlobType::NumTypes;
255 writer.write_count(nof_entries);
256 for (u4 i = 0; i < nof_entries; ++i) {
257 writer.write_key(i);
258 writer.write(CodeCache::get_code_heap_name(i));
259 }
260 };
261
262 void VMOperationTypeConstant::serialize(JfrCheckpointWriter& writer) {
263 static const u4 nof_entries = VM_Operation::VMOp_Terminating;
264 writer.write_count(nof_entries);
265 for (u4 i = 0; i < nof_entries; ++i) {
266 writer.write_key(i);
267 writer.write(VM_Operation::name(VM_Operation::VMOp_Type(i)));
268 }
269 }
270
271 void ThreadStateConstant::serialize(JfrCheckpointWriter& writer) {
272 JfrThreadState::serialize(writer);
273 }
274
275 void JfrThreadConstant::serialize(JfrCheckpointWriter& writer) {
276 assert(_thread != NULL, "invariant");
277 assert(_thread == Thread::current(), "invariant");
278 writer.write_count(1);
279 writer.write_key(JfrThreadId::jfr_id(_thread));
280 const char* const name = JfrThreadName::name(_thread);
281 writer.write(name);
282 writer.write(JfrThreadId::os_id(_thread));
283 if (_thread->is_Java_thread()) {
284 writer.write(name);
285 writer.write(JfrThreadId::id(_thread));
286 JavaThread* const jt = (JavaThread*)_thread;
287 const traceid thread_group_id = JfrThreadGroup::thread_group_id(jt, jt);
288 writer.write(thread_group_id);
289 JfrThreadGroup::serialize(&writer, thread_group_id);
290 return;
291 }
292 writer.write((const char*)NULL); // java name
293 writer.write((traceid)0); // java thread id
294 writer.write((traceid)0); // java thread group
295 }