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/iterator.hpp"
43 #include "memory/metaspaceGCThresholdUpdater.hpp"
44 #include "memory/referenceType.hpp"
45 #include "memory/universe.hpp"
46 #include "oops/compressedOops.hpp"
47 #include "runtime/flags/jvmFlag.hpp"
48 #include "runtime/mutexLocker.hpp"
49 #include "runtime/osThread.hpp"
50 #include "runtime/safepoint.hpp"
51 #include "runtime/synchronizer.hpp"
52 #include "runtime/thread.inline.hpp"
53 #include "runtime/vmOperations.hpp"
54
55 #ifdef COMPILER2
56 #include "opto/compile.hpp"
57 #include "opto/node.hpp"
58 #endif
59
60 // Requires a ResourceMark for get_thread_name/as_utf8
61 class JfrCheckpointThreadClosure : public ThreadClosure {
62 private:
63 JfrCheckpointWriter& _writer;
64 JfrCheckpointContext _ctx;
65 const int64_t _count_position;
66 Thread* const _curthread;
67 u4 _count;
68
69 public:
70 JfrCheckpointThreadClosure(JfrCheckpointWriter& writer) : _writer(writer),
71 _ctx(writer.context()),
72 _count_position(writer.reserve(sizeof(u4))),
73 _curthread(Thread::current()),
74 _count(0) {
75 }
76
77 ~JfrCheckpointThreadClosure() {
78 if (_count == 0) {
79 // restore
80 _writer.set_context(_ctx);
81 return;
82 }
83 _writer.write_count(_count, _count_position);
84 }
85
86 void do_thread(Thread* t);
87 };
88
89 void JfrCheckpointThreadClosure::do_thread(Thread* t) {
90 assert(t != NULL, "invariant");
91 ++_count;
92 _writer.write_key(JfrThreadId::jfr_id(t));
93 const char* const name = JfrThreadName::name(t);
94 assert(name != NULL, "invariant");
95 _writer.write(name);
96 _writer.write<traceid>(JfrThreadId::os_id(t));
97 if (t->is_Java_thread()) {
98 _writer.write(name);
99 _writer.write(JfrThreadId::id(t));
100 _writer.write(JfrThreadGroup::thread_group_id((JavaThread*)t, _curthread));
101 return;
102 }
103 _writer.write((const char*)NULL); // java name
104 _writer.write((traceid)0); // java thread id
105 _writer.write((traceid)0); // java thread group
106 }
107
108 void JfrThreadConstantSet::serialize(JfrCheckpointWriter& writer) {
109 JfrCheckpointThreadClosure tc(writer);
110 JfrJavaThreadIterator javathreads;
111 while (javathreads.has_next()) {
112 tc.do_thread(javathreads.next());
113 }
114 JfrNonJavaThreadIterator nonjavathreads;
115 while (nonjavathreads.has_next()) {
116 tc.do_thread(nonjavathreads.next());
117 }
118 }
119
120 void JfrThreadGroupConstant::serialize(JfrCheckpointWriter& writer) {
121 JfrThreadGroup::serialize(writer);
122 }
123
124 static const char* flag_value_origin_to_string(JVMFlag::Flags origin) {
125 switch (origin) {
126 case JVMFlag::DEFAULT: return "Default";
127 case JVMFlag::COMMAND_LINE: return "Command line";
128 case JVMFlag::ENVIRON_VAR: return "Environment variable";
129 case JVMFlag::CONFIG_FILE: return "Config file";
130 case JVMFlag::MANAGEMENT: return "Management";
131 case JVMFlag::ERGONOMIC: return "Ergonomic";
132 case JVMFlag::ATTACH_ON_DEMAND: return "Attach on demand";
133 case JVMFlag::INTERNAL: return "Internal";
134 case JVMFlag::JIMAGE_RESOURCE: return "JImage resource";
135 default: ShouldNotReachHere(); return "";
136 }
137 }
138
139 void FlagValueOriginConstant::serialize(JfrCheckpointWriter& writer) {
140 static const u4 nof_entries = JVMFlag::LAST_VALUE_ORIGIN + 1;
141 writer.write_count(nof_entries);
142 for (u4 i = 0; i < nof_entries; ++i) {
143 writer.write_key(i);
144 writer.write(flag_value_origin_to_string((JVMFlag::Flags)i));
145 }
146 }
147
148 void MonitorInflateCauseConstant::serialize(JfrCheckpointWriter& writer) {
149 static const u4 nof_entries = ObjectSynchronizer::inflate_cause_nof;
150 writer.write_count(nof_entries);
151 for (u4 i = 0; i < nof_entries; ++i) {
152 writer.write_key(i);
153 writer.write(ObjectSynchronizer::inflate_cause_name((ObjectSynchronizer::InflateCause)i));
154 }
155 }
156
157 void GCCauseConstant::serialize(JfrCheckpointWriter& writer) {
158 static const u4 nof_entries = GCCause::_last_gc_cause;
159 writer.write_count(nof_entries);
160 for (u4 i = 0; i < nof_entries; ++i) {
161 writer.write_key(i);
162 writer.write(GCCause::to_string((GCCause::Cause)i));
163 }
164 }
165
166 void GCNameConstant::serialize(JfrCheckpointWriter& writer) {
167 static const u4 nof_entries = GCNameEndSentinel;
168 writer.write_count(nof_entries);
169 for (u4 i = 0; i < nof_entries; ++i) {
170 writer.write_key(i);
171 writer.write(GCNameHelper::to_string((GCName)i));
172 }
173 }
174
175 void GCWhenConstant::serialize(JfrCheckpointWriter& writer) {
176 static const u4 nof_entries = GCWhen::GCWhenEndSentinel;
177 writer.write_count(nof_entries);
178 for (u4 i = 0; i < nof_entries; ++i) {
179 writer.write_key(i);
180 writer.write(GCWhen::to_string((GCWhen::Type)i));
181 }
182 }
183
184 void GCThresholdUpdaterConstant::serialize(JfrCheckpointWriter& writer) {
185 static const u4 nof_entries = MetaspaceGCThresholdUpdater::Last;
186 writer.write_count(nof_entries);
187 for (u4 i = 0; i < nof_entries; ++i) {
188 writer.write_key(i);
189 writer.write(MetaspaceGCThresholdUpdater::to_string((MetaspaceGCThresholdUpdater::Type)i));
190 }
191 }
192
193 void MetadataTypeConstant::serialize(JfrCheckpointWriter& writer) {
194 static const u4 nof_entries = Metaspace::MetadataTypeCount;
195 writer.write_count(nof_entries);
196 for (u4 i = 0; i < nof_entries; ++i) {
197 writer.write_key(i);
198 writer.write(Metaspace::metadata_type_name((Metaspace::MetadataType)i));
199 }
200 }
201
202 void MetaspaceObjectTypeConstant::serialize(JfrCheckpointWriter& writer) {
203 static const u4 nof_entries = MetaspaceObj::_number_of_types;
204 writer.write_count(nof_entries);
205 for (u4 i = 0; i < nof_entries; ++i) {
206 writer.write_key(i);
207 writer.write(MetaspaceObj::type_name((MetaspaceObj::Type)i));
208 }
209 }
210
211 static const char* reference_type_to_string(ReferenceType rt) {
212 switch (rt) {
213 case REF_NONE: return "None reference";
214 case REF_OTHER: return "Other reference";
215 case REF_SOFT: return "Soft reference";
216 case REF_WEAK: return "Weak reference";
217 case REF_FINAL: return "Final reference";
218 case REF_PHANTOM: return "Phantom reference";
219 default:
220 ShouldNotReachHere();
221 return NULL;
222 }
223 }
224
225 void ReferenceTypeConstant::serialize(JfrCheckpointWriter& writer) {
226 static const u4 nof_entries = REF_PHANTOM + 1;
227 writer.write_count(nof_entries);
228 for (u4 i = 0; i < nof_entries; ++i) {
229 writer.write_key(i);
230 writer.write(reference_type_to_string((ReferenceType)i));
231 }
232 }
233
234 void NarrowOopModeConstant::serialize(JfrCheckpointWriter& writer) {
235 static const u4 nof_entries = CompressedOops::HeapBasedNarrowOop + 1;
236 writer.write_count(nof_entries);
237 for (u4 i = 0; i < nof_entries; ++i) {
238 writer.write_key(i);
239 writer.write(CompressedOops::mode_to_string((CompressedOops::Mode)i));
240 }
241 }
242
243 void CompilerPhaseTypeConstant::serialize(JfrCheckpointWriter& writer) {
244 #ifdef COMPILER2
245 static const u4 nof_entries = PHASE_NUM_TYPES;
246 writer.write_count(nof_entries);
247 for (u4 i = 0; i < nof_entries; ++i) {
248 writer.write_key(i);
249 writer.write(CompilerPhaseTypeHelper::to_string((CompilerPhaseType)i));
250 }
251 #endif
252 }
253
254 void CodeBlobTypeConstant::serialize(JfrCheckpointWriter& writer) {
255 static const u4 nof_entries = CodeBlobType::NumTypes;
256 writer.write_count(nof_entries);
257 for (u4 i = 0; i < nof_entries; ++i) {
258 writer.write_key(i);
259 writer.write(CodeCache::get_code_heap_name(i));
260 }
261 };
262
263 void VMOperationTypeConstant::serialize(JfrCheckpointWriter& writer) {
264 static const u4 nof_entries = VM_Operation::VMOp_Terminating;
265 writer.write_count(nof_entries);
266 for (u4 i = 0; i < nof_entries; ++i) {
267 writer.write_key(i);
268 writer.write(VM_Operation::name(VM_Operation::VMOp_Type(i)));
269 }
270 }
271
272 void ThreadStateConstant::serialize(JfrCheckpointWriter& writer) {
273 JfrThreadState::serialize(writer);
274 }
275
276 void JfrThreadConstant::serialize(JfrCheckpointWriter& writer) {
277 assert(_thread != NULL, "invariant");
278 assert(_thread == Thread::current(), "invariant");
279 writer.write_count(1);
280 writer.write_key(JfrThreadId::jfr_id(_thread));
281 const char* const name = JfrThreadName::name(_thread);
282 writer.write(name);
283 writer.write(JfrThreadId::os_id(_thread));
284 if (_thread->is_Java_thread()) {
285 writer.write(name);
286 writer.write(JfrThreadId::id(_thread));
287 JavaThread* const jt = (JavaThread*)_thread;
288 const traceid thread_group_id = JfrThreadGroup::thread_group_id(jt, jt);
289 writer.write(thread_group_id);
290 JfrThreadGroup::serialize(&writer, thread_group_id);
291 return;
292 }
293 writer.write((const char*)NULL); // java name
294 writer.write((traceid)0); // java thread id
295 writer.write((traceid)0); // java thread group
296 }