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