1 /*
2 * Copyright (c) 2016, 2021, 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/metaspaceUtils.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:
JfrCheckpointThreadClosure(JfrCheckpointWriter & writer)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
~JfrCheckpointThreadClosure()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
do_thread(Thread * t)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(t->as_Java_thread(), _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
serialize(JfrCheckpointWriter & writer)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
serialize(JfrCheckpointWriter & writer)122 void JfrThreadGroupConstant::serialize(JfrCheckpointWriter& writer) {
123 JfrThreadGroup::serialize(writer);
124 }
125
flag_value_origin_to_string(JVMFlagOrigin origin)126 static const char* flag_value_origin_to_string(JVMFlagOrigin origin) {
127 switch (origin) {
128 case JVMFlagOrigin::DEFAULT: return "Default";
129 case JVMFlagOrigin::COMMAND_LINE: return "Command line";
130 case JVMFlagOrigin::ENVIRON_VAR: return "Environment variable";
131 case JVMFlagOrigin::CONFIG_FILE: return "Config file";
132 case JVMFlagOrigin::MANAGEMENT: return "Management";
133 case JVMFlagOrigin::ERGONOMIC: return "Ergonomic";
134 case JVMFlagOrigin::ATTACH_ON_DEMAND: return "Attach on demand";
135 case JVMFlagOrigin::INTERNAL: return "Internal";
136 case JVMFlagOrigin::JIMAGE_RESOURCE: return "JImage resource";
137 default: ShouldNotReachHere(); return "";
138 }
139 }
140
serialize(JfrCheckpointWriter & writer)141 void FlagValueOriginConstant::serialize(JfrCheckpointWriter& writer) {
142 constexpr EnumRange<JVMFlagOrigin> range{};
143 writer.write_count(static_cast<u4>(range.size()));
144
145 for (JVMFlagOrigin origin : range) {
146 writer.write_key(static_cast<u4>(origin));
147 writer.write(flag_value_origin_to_string(origin));
148 }
149 }
150
serialize(JfrCheckpointWriter & writer)151 void MonitorInflateCauseConstant::serialize(JfrCheckpointWriter& writer) {
152 static const u4 nof_entries = ObjectSynchronizer::inflate_cause_nof;
153 writer.write_count(nof_entries);
154 for (u4 i = 0; i < nof_entries; ++i) {
155 writer.write_key(i);
156 writer.write(ObjectSynchronizer::inflate_cause_name((ObjectSynchronizer::InflateCause)i));
157 }
158 }
159
serialize(JfrCheckpointWriter & writer)160 void GCCauseConstant::serialize(JfrCheckpointWriter& writer) {
161 static const u4 nof_entries = GCCause::_last_gc_cause;
162 writer.write_count(nof_entries);
163 for (u4 i = 0; i < nof_entries; ++i) {
164 writer.write_key(i);
165 writer.write(GCCause::to_string((GCCause::Cause)i));
166 }
167 }
168
serialize(JfrCheckpointWriter & writer)169 void GCNameConstant::serialize(JfrCheckpointWriter& writer) {
170 static const u4 nof_entries = GCNameEndSentinel;
171 writer.write_count(nof_entries);
172 for (u4 i = 0; i < nof_entries; ++i) {
173 writer.write_key(i);
174 writer.write(GCNameHelper::to_string((GCName)i));
175 }
176 }
177
serialize(JfrCheckpointWriter & writer)178 void GCWhenConstant::serialize(JfrCheckpointWriter& writer) {
179 static const u4 nof_entries = GCWhen::GCWhenEndSentinel;
180 writer.write_count(nof_entries);
181 for (u4 i = 0; i < nof_entries; ++i) {
182 writer.write_key(i);
183 writer.write(GCWhen::to_string((GCWhen::Type)i));
184 }
185 }
186
serialize(JfrCheckpointWriter & writer)187 void GCThresholdUpdaterConstant::serialize(JfrCheckpointWriter& writer) {
188 static const u4 nof_entries = MetaspaceGCThresholdUpdater::Last;
189 writer.write_count(nof_entries);
190 for (u4 i = 0; i < nof_entries; ++i) {
191 writer.write_key(i);
192 writer.write(MetaspaceGCThresholdUpdater::to_string((MetaspaceGCThresholdUpdater::Type)i));
193 }
194 }
195
serialize(JfrCheckpointWriter & writer)196 void MetadataTypeConstant::serialize(JfrCheckpointWriter& writer) {
197 static const u4 nof_entries = Metaspace::MetadataTypeCount;
198 writer.write_count(nof_entries);
199 for (u4 i = 0; i < nof_entries; ++i) {
200 writer.write_key(i);
201 writer.write(Metaspace::metadata_type_name((Metaspace::MetadataType)i));
202 }
203 }
204
serialize(JfrCheckpointWriter & writer)205 void MetaspaceObjectTypeConstant::serialize(JfrCheckpointWriter& writer) {
206 static const u4 nof_entries = MetaspaceObj::_number_of_types;
207 writer.write_count(nof_entries);
208 for (u4 i = 0; i < nof_entries; ++i) {
209 writer.write_key(i);
210 writer.write(MetaspaceObj::type_name((MetaspaceObj::Type)i));
211 }
212 }
213
reference_type_to_string(ReferenceType rt)214 static const char* reference_type_to_string(ReferenceType rt) {
215 switch (rt) {
216 case REF_NONE: return "None reference";
217 case REF_OTHER: return "Other reference";
218 case REF_SOFT: return "Soft reference";
219 case REF_WEAK: return "Weak reference";
220 case REF_FINAL: return "Final reference";
221 case REF_PHANTOM: return "Phantom reference";
222 default:
223 ShouldNotReachHere();
224 return NULL;
225 }
226 }
227
serialize(JfrCheckpointWriter & writer)228 void ReferenceTypeConstant::serialize(JfrCheckpointWriter& writer) {
229 static const u4 nof_entries = REF_PHANTOM + 1;
230 writer.write_count(nof_entries);
231 for (u4 i = 0; i < nof_entries; ++i) {
232 writer.write_key(i);
233 writer.write(reference_type_to_string((ReferenceType)i));
234 }
235 }
236
serialize(JfrCheckpointWriter & writer)237 void NarrowOopModeConstant::serialize(JfrCheckpointWriter& writer) {
238 static const u4 nof_entries = CompressedOops::HeapBasedNarrowOop + 1;
239 writer.write_count(nof_entries);
240 for (u4 i = 0; i < nof_entries; ++i) {
241 writer.write_key(i);
242 writer.write(CompressedOops::mode_to_string((CompressedOops::Mode)i));
243 }
244 }
245
serialize(JfrCheckpointWriter & writer)246 void CodeBlobTypeConstant::serialize(JfrCheckpointWriter& writer) {
247 static const u4 nof_entries = CodeBlobType::NumTypes;
248 writer.write_count(nof_entries);
249 for (u4 i = 0; i < nof_entries; ++i) {
250 writer.write_key(i);
251 writer.write(CodeCache::get_code_heap_name(i));
252 }
253 };
254
serialize(JfrCheckpointWriter & writer)255 void VMOperationTypeConstant::serialize(JfrCheckpointWriter& writer) {
256 static const u4 nof_entries = VM_Operation::VMOp_Terminating;
257 writer.write_count(nof_entries);
258 for (u4 i = 0; i < nof_entries; ++i) {
259 writer.write_key(i);
260 writer.write(VM_Operation::name(VM_Operation::VMOp_Type(i)));
261 }
262 }
263
serialize(JfrCheckpointWriter & writer)264 void ThreadStateConstant::serialize(JfrCheckpointWriter& writer) {
265 JfrThreadState::serialize(writer);
266 }
267
serialize(JfrCheckpointWriter & writer)268 void JfrThreadConstant::serialize(JfrCheckpointWriter& writer) {
269 assert(_thread != NULL, "invariant");
270 assert(_thread == Thread::current(), "invariant");
271 writer.write_count(1);
272 writer.write_key(JfrThreadId::jfr_id(_thread));
273 const char* const name = JfrThreadName::name(_thread);
274 writer.write(name);
275 writer.write(JfrThreadId::os_id(_thread));
276 if (_thread->is_Java_thread()) {
277 writer.write(name);
278 writer.write(JfrThreadId::id(_thread));
279 JavaThread* const jt = _thread->as_Java_thread();
280 const traceid thread_group_id = JfrThreadGroup::thread_group_id(jt, jt);
281 writer.write(thread_group_id);
282 JfrThreadGroup::serialize(&writer, thread_group_id);
283 return;
284 }
285 writer.write((const char*)NULL); // java name
286 writer.write((traceid)0); // java thread id
287 writer.write((traceid)0); // java thread group
288 }
289
serialize(JfrCheckpointWriter & writer)290 void BytecodeConstant::serialize(JfrCheckpointWriter& writer) {
291 static const u4 nof_entries = Bytecodes::number_of_codes;
292 writer.write_count(nof_entries);
293 for (u4 i = 0; i < nof_entries; ++i) {
294 writer.write_key(i);
295 writer.write(Bytecodes::name((Bytecodes::Code)i));
296 }
297 }
298
serialize(JfrCheckpointWriter & writer)299 void CompilerTypeConstant::serialize(JfrCheckpointWriter& writer) {
300 static const u4 nof_entries = compiler_number_of_types;
301 writer.write_count(nof_entries);
302 for (u4 i = 0; i < nof_entries; ++i) {
303 writer.write_key(i);
304 writer.write(compilertype2name((CompilerType)i));
305 }
306 }
307