1 /*
2 * Copyright (c) 2016, 2020, 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 "compiler/compilerDefinitions.hpp"
30 #include "gc/shared/gcCause.hpp"
31 #include "gc/shared/gcName.hpp"
32 #include "gc/shared/gcTrace.hpp"
33 #include "gc/shared/gcWhen.hpp"
34 #include "jfr/leakprofiler/leakProfiler.hpp"
35 #include "jfr/recorder/checkpoint/jfrCheckpointWriter.hpp"
36 #include "jfr/recorder/checkpoint/types/jfrType.hpp"
37 #include "jfr/recorder/jfrRecorder.hpp"
38 #include "jfr/recorder/checkpoint/types/jfrThreadGroup.hpp"
39 #include "jfr/recorder/checkpoint/types/jfrThreadState.hpp"
40 #include "jfr/support/jfrThreadLocal.hpp"
41 #include "jfr/writers/jfrJavaEventWriter.hpp"
42 #include "memory/metaspace.hpp"
43 #include "memory/metaspace/metaspaceEnums.hpp"
44 #include "jfr/utilities/jfrThreadIterator.hpp"
45 #include "memory/iterator.hpp"
46 #include "memory/referenceType.hpp"
47 #include "memory/universe.hpp"
48 #include "oops/compressedOops.hpp"
49 #include "runtime/flags/jvmFlag.hpp"
50 #include "runtime/mutexLocker.hpp"
51 #include "runtime/osThread.hpp"
52 #include "runtime/safepoint.hpp"
53 #include "runtime/synchronizer.hpp"
54 #include "runtime/thread.inline.hpp"
55 #include "runtime/vmOperations.hpp"
56
57 #ifdef COMPILER2
58 #include "opto/compile.hpp"
59 #include "opto/node.hpp"
60 #endif
61
62 // Requires a ResourceMark for get_thread_name/as_utf8
63 class JfrCheckpointThreadClosure : public ThreadClosure {
64 private:
65 JfrCheckpointWriter& _writer;
66 JfrCheckpointContext _ctx;
67 const int64_t _count_position;
68 Thread* const _curthread;
69 u4 _count;
70
71 public:
72 JfrCheckpointThreadClosure(JfrCheckpointWriter& writer) : _writer(writer),
73 _ctx(writer.context()),
74 _count_position(writer.reserve(sizeof(u4))),
75 _curthread(Thread::current()),
76 _count(0) {
77 }
78
79 ~JfrCheckpointThreadClosure() {
80 if (_count == 0) {
81 // restore
82 _writer.set_context(_ctx);
83 return;
84 }
85 _writer.write_count(_count, _count_position);
86 }
87
88 void do_thread(Thread* t);
89 };
90
91 void JfrCheckpointThreadClosure::do_thread(Thread* t) {
92 assert(t != NULL, "invariant");
93 ++_count;
94 _writer.write_key(JfrThreadId::jfr_id(t));
95 const char* const name = JfrThreadName::name(t);
96 assert(name != NULL, "invariant");
97 _writer.write(name);
98 _writer.write<traceid>(JfrThreadId::os_id(t));
99 if (t->is_Java_thread()) {
100 _writer.write(name);
101 _writer.write(JfrThreadId::id(t));
102 _writer.write(JfrThreadGroup::thread_group_id((JavaThread*)t, _curthread));
103 return;
104 }
105 _writer.write((const char*)NULL); // java name
106 _writer.write((traceid)0); // java thread id
107 _writer.write((traceid)0); // java thread group
108 }
109
110 void JfrThreadConstantSet::serialize(JfrCheckpointWriter& writer) {
111 JfrCheckpointThreadClosure tc(writer);
112 JfrJavaThreadIterator javathreads(false); // include not yet live threads (_thread_new)
113 while (javathreads.has_next()) {
114 tc.do_thread(javathreads.next());
115 }
116 JfrNonJavaThreadIterator nonjavathreads;
117 while (nonjavathreads.has_next()) {
118 tc.do_thread(nonjavathreads.next());
119 }
120 }
121
122 void JfrThreadGroupConstant::serialize(JfrCheckpointWriter& writer) {
123 JfrThreadGroup::serialize(writer);
124 }
125
126 static const char* flag_value_origin_to_string(JVMFlag::Flags origin) {
127 switch (origin) {
128 case JVMFlag::DEFAULT: return "Default";
129 case JVMFlag::COMMAND_LINE: return "Command line";
130 case JVMFlag::ENVIRON_VAR: return "Environment variable";
131 case JVMFlag::CONFIG_FILE: return "Config file";
132 case JVMFlag::MANAGEMENT: return "Management";
133 case JVMFlag::ERGONOMIC: return "Ergonomic";
134 case JVMFlag::ATTACH_ON_DEMAND: return "Attach on demand";
135 case JVMFlag::INTERNAL: return "Internal";
136 case JVMFlag::JIMAGE_RESOURCE: return "JImage resource";
137 default: ShouldNotReachHere(); return "";
138 }
139 }
140
141 void FlagValueOriginConstant::serialize(JfrCheckpointWriter& writer) {
142 static const u4 nof_entries = JVMFlag::LAST_VALUE_ORIGIN + 1;
143 writer.write_count(nof_entries);
144 for (u4 i = 0; i < nof_entries; ++i) {
145 writer.write_key(i);
146 writer.write(flag_value_origin_to_string((JVMFlag::Flags)i));
147 }
148 }
149
150 void MonitorInflateCauseConstant::serialize(JfrCheckpointWriter& writer) {
151 static const u4 nof_entries = ObjectSynchronizer::inflate_cause_nof;
152 writer.write_count(nof_entries);
153 for (u4 i = 0; i < nof_entries; ++i) {
154 writer.write_key(i);
155 writer.write(ObjectSynchronizer::inflate_cause_name((ObjectSynchronizer::InflateCause)i));
156 }
157 }
158
159 void GCCauseConstant::serialize(JfrCheckpointWriter& writer) {
160 static const u4 nof_entries = GCCause::_last_gc_cause;
161 writer.write_count(nof_entries);
162 for (u4 i = 0; i < nof_entries; ++i) {
163 writer.write_key(i);
164 writer.write(GCCause::to_string((GCCause::Cause)i));
165 }
166 }
167
168 void GCNameConstant::serialize(JfrCheckpointWriter& writer) {
169 static const u4 nof_entries = GCNameEndSentinel;
170 writer.write_count(nof_entries);
171 for (u4 i = 0; i < nof_entries; ++i) {
172 writer.write_key(i);
173 writer.write(GCNameHelper::to_string((GCName)i));
174 }
175 }
176
177 void GCWhenConstant::serialize(JfrCheckpointWriter& writer) {
178 static const u4 nof_entries = GCWhen::GCWhenEndSentinel;
179 writer.write_count(nof_entries);
180 for (u4 i = 0; i < nof_entries; ++i) {
181 writer.write_key(i);
182 writer.write(GCWhen::to_string((GCWhen::Type)i));
183 }
184 }
185
186 void GCThresholdUpdaterConstant::serialize(JfrCheckpointWriter& writer) {
187 static const u4 nof_entries = MetaspaceGCThresholdUpdater::Last;
188 writer.write_count(nof_entries);
189 for (u4 i = 0; i < nof_entries; ++i) {
190 writer.write_key(i);
191 writer.write(MetaspaceGCThresholdUpdater::to_string((MetaspaceGCThresholdUpdater::Type)i));
192 }
193 }
194
195 void MetadataTypeConstant::serialize(JfrCheckpointWriter& writer) {
196 static const u4 nof_entries = Metaspace::MetadataTypeCount;
197 writer.write_count(nof_entries);
198 for (u4 i = 0; i < nof_entries; ++i) {
199 writer.write_key(i);
200 writer.write(metaspace::describe_mdtype((Metaspace::MetadataType)i));
201 }
202 }
203
204 void MetaspaceObjectTypeConstant::serialize(JfrCheckpointWriter& writer) {
205 static const u4 nof_entries = MetaspaceObj::_number_of_types;
206 writer.write_count(nof_entries);
207 for (u4 i = 0; i < nof_entries; ++i) {
208 writer.write_key(i);
209 writer.write(MetaspaceObj::type_name((MetaspaceObj::Type)i));
210 }
211 }
212
213 static const char* reference_type_to_string(ReferenceType rt) {
214 switch (rt) {
215 case REF_NONE: return "None reference";
216 case REF_OTHER: return "Other reference";
217 case REF_SOFT: return "Soft reference";
218 case REF_WEAK: return "Weak reference";
219 case REF_FINAL: return "Final reference";
220 case REF_PHANTOM: return "Phantom reference";
221 default:
222 ShouldNotReachHere();
223 return NULL;
224 }
225 }
226
227 void ReferenceTypeConstant::serialize(JfrCheckpointWriter& writer) {
228 static const u4 nof_entries = REF_PHANTOM + 1;
229 writer.write_count(nof_entries);
230 for (u4 i = 0; i < nof_entries; ++i) {
231 writer.write_key(i);
232 writer.write(reference_type_to_string((ReferenceType)i));
233 }
234 }
235
236 void NarrowOopModeConstant::serialize(JfrCheckpointWriter& writer) {
237 static const u4 nof_entries = CompressedOops::HeapBasedNarrowOop + 1;
238 writer.write_count(nof_entries);
239 for (u4 i = 0; i < nof_entries; ++i) {
240 writer.write_key(i);
241 writer.write(CompressedOops::mode_to_string((CompressedOops::Mode)i));
242 }
243 }
244
245 void CodeBlobTypeConstant::serialize(JfrCheckpointWriter& writer) {
246 static const u4 nof_entries = CodeBlobType::NumTypes;
247 writer.write_count(nof_entries);
248 for (u4 i = 0; i < nof_entries; ++i) {
249 writer.write_key(i);
250 writer.write(CodeCache::get_code_heap_name(i));
251 }
252 };
253
254 void VMOperationTypeConstant::serialize(JfrCheckpointWriter& writer) {
255 static const u4 nof_entries = VM_Operation::VMOp_Terminating;
256 writer.write_count(nof_entries);
257 for (u4 i = 0; i < nof_entries; ++i) {
258 writer.write_key(i);
259 writer.write(VM_Operation::name(VM_Operation::VMOp_Type(i)));
260 }
261 }
262
263 void ThreadStateConstant::serialize(JfrCheckpointWriter& writer) {
264 JfrThreadState::serialize(writer);
265 }
266
267 void JfrThreadConstant::serialize(JfrCheckpointWriter& writer) {
268 assert(_thread != NULL, "invariant");
269 assert(_thread == Thread::current(), "invariant");
270 writer.write_count(1);
271 writer.write_key(JfrThreadId::jfr_id(_thread));
272 const char* const name = JfrThreadName::name(_thread);
273 writer.write(name);
274 writer.write(JfrThreadId::os_id(_thread));
275 if (_thread->is_Java_thread()) {
276 writer.write(name);
277 writer.write(JfrThreadId::id(_thread));
278 JavaThread* const jt = (JavaThread*)_thread;
279 const traceid thread_group_id = JfrThreadGroup::thread_group_id(jt, jt);
280 writer.write(thread_group_id);
281 JfrThreadGroup::serialize(&writer, thread_group_id);
282 return;
283 }
284 writer.write((const char*)NULL); // java name
285 writer.write((traceid)0); // java thread id
286 writer.write((traceid)0); // java thread group
287 }
288
289 void BytecodeConstant::serialize(JfrCheckpointWriter& writer) {
290 static const u4 nof_entries = Bytecodes::number_of_codes;
291 writer.write_count(nof_entries);
292 for (u4 i = 0; i < nof_entries; ++i) {
293 writer.write_key(i);
294 writer.write(Bytecodes::name((Bytecodes::Code)i));
295 }
296 }
297
298 void CompilerTypeConstant::serialize(JfrCheckpointWriter& writer) {
299 static const u4 nof_entries = compiler_number_of_types;
300 writer.write_count(nof_entries);
301 for (u4 i = 0; i < nof_entries; ++i) {
302 writer.write_key(i);
303 writer.write(compilertype2name((CompilerType)i));
304 }
305 }