1 /*
2 * Copyright (c) 2012, 2018, 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 "jvm.h"
27 #include "classfile/classLoaderDataGraph.hpp"
28 #include "classfile/classLoaderStats.hpp"
29 #include "classfile/javaClasses.hpp"
30 #include "code/codeCache.hpp"
31 #include "compiler/compileBroker.hpp"
32 #include "gc/g1/g1HeapRegionEventSender.hpp"
33 #include "gc/shared/gcConfiguration.hpp"
34 #include "gc/shared/gcTrace.hpp"
35 #include "gc/shared/objectCountEventSender.hpp"
36 #include "gc/shared/vmGCOperations.hpp"
37 #include "jfr/jfrEvents.hpp"
38 #include "jfr/periodic/jfrModuleEvent.hpp"
39 #include "jfr/periodic/jfrOSInterface.hpp"
40 #include "jfr/periodic/jfrThreadCPULoadEvent.hpp"
41 #include "jfr/periodic/jfrThreadDumpEvent.hpp"
42 #include "jfr/periodic/jfrNetworkUtilization.hpp"
43 #include "jfr/recorder/jfrRecorder.hpp"
44 #include "jfr/support/jfrThreadId.hpp"
45 #include "jfr/utilities/jfrTime.hpp"
46 #include "jfrfiles/jfrPeriodic.hpp"
47 #include "logging/log.hpp"
48 #include "memory/heapInspection.hpp"
49 #include "memory/resourceArea.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "runtime/arguments.hpp"
52 #include "runtime/flags/jvmFlag.hpp"
53 #include "runtime/globals.hpp"
54 #include "runtime/os.hpp"
55 #include "runtime/os_perf.hpp"
56 #include "runtime/thread.inline.hpp"
57 #include "runtime/threadSMR.hpp"
58 #include "runtime/sweeper.hpp"
59 #include "runtime/vmThread.hpp"
60 #include "services/classLoadingService.hpp"
61 #include "services/management.hpp"
62 #include "services/threadService.hpp"
63 #include "utilities/exceptions.hpp"
64 #include "utilities/globalDefinitions.hpp"
65
66 /**
67 * JfrPeriodic class
68 * Implementation of declarations in
69 * xsl generated traceRequestables.hpp
70 */
71 #define TRACE_REQUEST_FUNC(id) void JfrPeriodicEventSet::request##id(void)
72
73 TRACE_REQUEST_FUNC(JVMInformation) {
74 ResourceMark rm;
75 EventJVMInformation event;
76 event.set_jvmName(VM_Version::vm_name());
77 event.set_jvmVersion(VM_Version::internal_vm_info_string());
78 event.set_javaArguments(Arguments::java_command());
79 event.set_jvmArguments(Arguments::jvm_args());
80 event.set_jvmFlags(Arguments::jvm_flags());
81 event.set_jvmStartTime(Management::vm_init_done_time());
82 event.commit();
83 }
84
85 TRACE_REQUEST_FUNC(OSInformation) {
86 ResourceMark rm;
87 char* os_name = NEW_RESOURCE_ARRAY(char, 2048);
88 JfrOSInterface::os_version(&os_name);
89 EventOSInformation event;
90 event.set_osVersion(os_name);
91 event.commit();
92 }
93
94 TRACE_REQUEST_FUNC(ModuleRequire) {
95 JfrModuleEvent::generate_module_dependency_events();
96 }
97
98 TRACE_REQUEST_FUNC(ModuleExport) {
99 JfrModuleEvent::generate_module_export_events();
100 }
101
102 /*
103 * This is left empty on purpose, having ExecutionSample as a requestable
104 * is a way of getting the period. The period is passed to ThreadSampling::update_period.
105 * Implementation in jfrSamples.cpp
106 */
107 TRACE_REQUEST_FUNC(ExecutionSample) {
108 }
109 TRACE_REQUEST_FUNC(NativeMethodSample) {
110 }
111
112 TRACE_REQUEST_FUNC(ThreadDump) {
113 ResourceMark rm;
114 EventThreadDump event;
115 event.set_result(JfrDcmdEvent::thread_dump());
116 event.commit();
117 }
118
119 static int _native_library_callback(const char* name, address base, address top, void *param) {
120 EventNativeLibrary event(UNTIMED);
121 event.set_name(name);
122 event.set_baseAddress((u8)base);
123 event.set_topAddress((u8)top);
124 event.set_endtime(*(JfrTicks*) param);
125 event.commit();
126 return 0;
127 }
128
129 TRACE_REQUEST_FUNC(NativeLibrary) {
130 JfrTicks ts= JfrTicks::now();
131 os::get_loaded_modules_info(&_native_library_callback, (void *)&ts);
132 }
133
134 TRACE_REQUEST_FUNC(InitialEnvironmentVariable) {
135 JfrOSInterface::generate_initial_environment_variable_events();
136 }
137
138 TRACE_REQUEST_FUNC(CPUInformation) {
139 CPUInformation cpu_info;
140 int ret_val = JfrOSInterface::cpu_information(cpu_info);
141 if (ret_val == OS_ERR) {
142 log_debug(jfr, system)( "Unable to generate requestable event CPUInformation");
143 return;
144 }
145 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
146 return;
147 }
148 if (ret_val == OS_OK) {
149 EventCPUInformation event;
150 event.set_cpu(cpu_info.cpu_name());
151 event.set_description(cpu_info.cpu_description());
152 event.set_sockets(cpu_info.number_of_sockets());
153 event.set_cores(cpu_info.number_of_cores());
154 event.set_hwThreads(cpu_info.number_of_hardware_threads());
155 event.commit();
156 }
157 }
158
159 TRACE_REQUEST_FUNC(CPULoad) {
160 double u = 0; // user time
161 double s = 0; // kernel time
162 double t = 0; // total time
163 int ret_val = JfrOSInterface::cpu_loads_process(&u, &s, &t);
164 if (ret_val == OS_ERR) {
165 log_debug(jfr, system)( "Unable to generate requestable event CPULoad");
166 return;
167 }
168 if (ret_val == OS_OK) {
169 EventCPULoad event;
170 event.set_jvmUser((float)u);
171 event.set_jvmSystem((float)s);
172 event.set_machineTotal((float)t);
173 event.commit();
174 }
175 }
176
177 TRACE_REQUEST_FUNC(ThreadCPULoad) {
178 JfrThreadCPULoadEvent::send_events();
179 }
180
181 TRACE_REQUEST_FUNC(NetworkUtilization) {
182 JfrNetworkUtilization::send_events();
183 }
184
185 TRACE_REQUEST_FUNC(CPUTimeStampCounter) {
186 EventCPUTimeStampCounter event;
187 event.set_fastTimeEnabled(JfrTime::is_ft_enabled());
188 event.set_fastTimeAutoEnabled(JfrTime::is_ft_supported());
189 event.set_osFrequency(os::elapsed_frequency());
190 event.set_fastTimeFrequency(JfrTime::frequency());
191 event.commit();
192 }
193
194 TRACE_REQUEST_FUNC(SystemProcess) {
195 char pid_buf[16];
196 SystemProcess* processes = NULL;
197 int num_of_processes = 0;
198 JfrTicks start_time = JfrTicks::now();
199 int ret_val = JfrOSInterface::system_processes(&processes, &num_of_processes);
200 if (ret_val == OS_ERR) {
201 log_debug(jfr, system)( "Unable to generate requestable event SystemProcesses");
202 return;
203 }
204 JfrTicks end_time = JfrTicks::now();
205 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
206 return;
207 }
208 if (ret_val == OS_OK) {
209 // feature is implemented, write real event
210 while (processes != NULL) {
211 SystemProcess* tmp = processes;
212 const char* info = processes->command_line();
213 if (info == NULL) {
214 info = processes->path();
215 }
216 if (info == NULL) {
217 info = processes->name();
218 }
219 if (info == NULL) {
220 info = "?";
221 }
222 jio_snprintf(pid_buf, sizeof(pid_buf), "%d", processes->pid());
223 EventSystemProcess event(UNTIMED);
224 event.set_pid(pid_buf);
225 event.set_commandLine(info);
226 event.set_starttime(start_time);
227 event.set_endtime(end_time);
228 event.commit();
229 processes = processes->next();
230 delete tmp;
231 }
232 }
233 }
234
235 TRACE_REQUEST_FUNC(ThreadContextSwitchRate) {
236 double rate = 0.0;
237 int ret_val = JfrOSInterface::context_switch_rate(&rate);
238 if (ret_val == OS_ERR) {
239 log_debug(jfr, system)( "Unable to generate requestable event ThreadContextSwitchRate");
240 return;
241 }
242 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
243 return;
244 }
245 if (ret_val == OS_OK) {
246 EventThreadContextSwitchRate event;
247 event.set_switchRate((float)rate + 0.0f);
248 event.commit();
249 }
250 }
251
252 #define SEND_FLAGS_OF_TYPE(eventType, flagType) \
253 do { \
254 JVMFlag *flag = JVMFlag::flags; \
255 while (flag->_name != NULL) { \
256 if (flag->is_ ## flagType()) { \
257 if (flag->is_unlocked()) { \
258 Event ## eventType event; \
259 event.set_name(flag->_name); \
260 event.set_value(flag->get_ ## flagType()); \
261 event.set_origin(flag->get_origin()); \
262 event.commit(); \
263 } \
264 } \
265 ++flag; \
266 } \
267 } while (0)
268
269 TRACE_REQUEST_FUNC(IntFlag) {
270 SEND_FLAGS_OF_TYPE(IntFlag, int);
271 }
272
273 TRACE_REQUEST_FUNC(UnsignedIntFlag) {
274 SEND_FLAGS_OF_TYPE(UnsignedIntFlag, uint);
275 }
276
277 TRACE_REQUEST_FUNC(LongFlag) {
278 SEND_FLAGS_OF_TYPE(LongFlag, intx);
279 }
280
281 TRACE_REQUEST_FUNC(UnsignedLongFlag) {
282 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uintx);
283 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uint64_t);
284 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, size_t);
285 }
286
287 TRACE_REQUEST_FUNC(DoubleFlag) {
288 SEND_FLAGS_OF_TYPE(DoubleFlag, double);
289 }
290
291 TRACE_REQUEST_FUNC(BooleanFlag) {
292 SEND_FLAGS_OF_TYPE(BooleanFlag, bool);
293 }
294
295 TRACE_REQUEST_FUNC(StringFlag) {
296 SEND_FLAGS_OF_TYPE(StringFlag, ccstr);
297 }
298
299 class VM_GC_SendObjectCountEvent : public VM_GC_HeapInspection {
300 public:
301 VM_GC_SendObjectCountEvent() : VM_GC_HeapInspection(NULL, true) {}
302 virtual void doit() {
303 ObjectCountEventSender::enable_requestable_event();
304 collect();
305 ObjectCountEventSender::disable_requestable_event();
306 }
307 };
308
309 TRACE_REQUEST_FUNC(ObjectCount) {
310 VM_GC_SendObjectCountEvent op;
311 VMThread::execute(&op);
312 }
313
314 class VM_G1SendHeapRegionInfoEvents : public VM_Operation {
315 virtual void doit() {
316 G1HeapRegionEventSender::send_events();
317 }
318 virtual VMOp_Type type() const { return VMOp_HeapIterateOperation; }
319 };
320
321 TRACE_REQUEST_FUNC(G1HeapRegionInformation) {
322 if (UseG1GC) {
323 VM_G1SendHeapRegionInfoEvents op;
324 VMThread::execute(&op);
325 }
326 }
327
328 // Java Mission Control (JMC) uses (Java) Long.MIN_VALUE to describe that a
329 // long value is undefined.
330 static jlong jmc_undefined_long = min_jlong;
331
332 TRACE_REQUEST_FUNC(GCConfiguration) {
333 GCConfiguration conf;
334 jlong pause_target = conf.has_pause_target_default_value() ? jmc_undefined_long : conf.pause_target();
335 EventGCConfiguration event;
336 event.set_youngCollector(conf.young_collector());
337 event.set_oldCollector(conf.old_collector());
338 event.set_parallelGCThreads(conf.num_parallel_gc_threads());
339 event.set_concurrentGCThreads(conf.num_concurrent_gc_threads());
340 event.set_usesDynamicGCThreads(conf.uses_dynamic_gc_threads());
341 event.set_isExplicitGCConcurrent(conf.is_explicit_gc_concurrent());
342 event.set_isExplicitGCDisabled(conf.is_explicit_gc_disabled());
343 event.set_gcTimeRatio(conf.gc_time_ratio());
344 event.set_pauseTarget((s8)pause_target);
345 event.commit();
346 }
347
348 TRACE_REQUEST_FUNC(GCTLABConfiguration) {
349 GCTLABConfiguration conf;
350 EventGCTLABConfiguration event;
351 event.set_usesTLABs(conf.uses_tlabs());
352 event.set_minTLABSize(conf.min_tlab_size());
353 event.set_tlabRefillWasteLimit(conf.tlab_refill_waste_limit());
354 event.commit();
355 }
356
357 TRACE_REQUEST_FUNC(GCSurvivorConfiguration) {
358 GCSurvivorConfiguration conf;
359 EventGCSurvivorConfiguration event;
360 event.set_maxTenuringThreshold(conf.max_tenuring_threshold());
361 event.set_initialTenuringThreshold(conf.initial_tenuring_threshold());
362 event.commit();
363 }
364
365 TRACE_REQUEST_FUNC(GCHeapConfiguration) {
366 GCHeapConfiguration conf;
367 EventGCHeapConfiguration event;
368 event.set_minSize(conf.min_size());
369 event.set_maxSize(conf.max_size());
370 event.set_initialSize(conf.initial_size());
371 event.set_usesCompressedOops(conf.uses_compressed_oops());
372 event.set_compressedOopsMode(conf.narrow_oop_mode());
373 event.set_objectAlignment(conf.object_alignment_in_bytes());
374 event.set_heapAddressBits(conf.heap_address_size_in_bits());
375 event.commit();
376 }
377
378 TRACE_REQUEST_FUNC(YoungGenerationConfiguration) {
379 GCYoungGenerationConfiguration conf;
380 jlong max_size = conf.has_max_size_default_value() ? jmc_undefined_long : conf.max_size();
381 EventYoungGenerationConfiguration event;
382 event.set_maxSize((u8)max_size);
383 event.set_minSize(conf.min_size());
384 event.set_newRatio(conf.new_ratio());
385 event.commit();
386 }
387
388 TRACE_REQUEST_FUNC(InitialSystemProperty) {
389 SystemProperty* p = Arguments::system_properties();
390 JfrTicks time_stamp = JfrTicks::now();
391 while (p != NULL) {
392 if (!p->internal()) {
393 EventInitialSystemProperty event(UNTIMED);
394 event.set_key(p->key());
395 event.set_value(p->value());
396 event.set_endtime(time_stamp);
397 event.commit();
398 }
399 p = p->next();
400 }
401 }
402
403 TRACE_REQUEST_FUNC(ThreadAllocationStatistics) {
404 ResourceMark rm;
405 int initial_size = Threads::number_of_threads();
406 GrowableArray<jlong> allocated(initial_size);
407 GrowableArray<traceid> thread_ids(initial_size);
408 JfrTicks time_stamp = JfrTicks::now();
409 {
410 // Collect allocation statistics while holding threads lock
411 MutexLockerEx ml(Threads_lock);
412 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) {
413 allocated.append(jt->cooked_allocated_bytes());
414 thread_ids.append(JFR_THREAD_ID(jt));
415 }
416 }
417
418 // Write allocation statistics to buffer.
419 for(int i = 0; i < thread_ids.length(); i++) {
420 EventThreadAllocationStatistics event(UNTIMED);
421 event.set_allocated(allocated.at(i));
422 event.set_thread(thread_ids.at(i));
423 event.set_endtime(time_stamp);
424 event.commit();
425 }
426 }
427
428 /**
429 * PhysicalMemory event represents:
430 *
431 * @totalSize == The amount of physical memory (hw) installed and reported by the OS, in bytes.
432 * @usedSize == The amount of physical memory currently in use in the system (reserved/committed), in bytes.
433 *
434 * Both fields are systemwide, i.e. represents the entire OS/HW environment.
435 * These fields do not include virtual memory.
436 *
437 * If running inside a guest OS on top of a hypervisor in a virtualized environment,
438 * the total memory reported is the amount of memory configured for the guest OS by the hypervisor.
439 */
440 TRACE_REQUEST_FUNC(PhysicalMemory) {
441 u8 totalPhysicalMemory = os::physical_memory();
442 EventPhysicalMemory event;
443 event.set_totalSize(totalPhysicalMemory);
444 event.set_usedSize(totalPhysicalMemory - os::available_memory());
445 event.commit();
446 }
447
448 TRACE_REQUEST_FUNC(JavaThreadStatistics) {
449 EventJavaThreadStatistics event;
450 event.set_activeCount(ThreadService::get_live_thread_count());
451 event.set_daemonCount(ThreadService::get_daemon_thread_count());
452 event.set_accumulatedCount(ThreadService::get_total_thread_count());
453 event.set_peakCount(ThreadService::get_peak_thread_count());
454 event.commit();
455 }
456
457 TRACE_REQUEST_FUNC(ClassLoadingStatistics) {
458 EventClassLoadingStatistics event;
459 event.set_loadedClassCount(ClassLoadingService::loaded_class_count());
460 event.set_unloadedClassCount(ClassLoadingService::unloaded_class_count());
461 event.commit();
462 }
463
464 class JfrClassLoaderStatsClosure : public ClassLoaderStatsClosure {
465 public:
466 JfrClassLoaderStatsClosure() : ClassLoaderStatsClosure(NULL) {}
467
468 bool do_entry(oop const& key, ClassLoaderStats* const& cls) {
469 const ClassLoaderData* this_cld = cls->_class_loader != NULL ?
470 java_lang_ClassLoader::loader_data_acquire(cls->_class_loader) : NULL;
471 const ClassLoaderData* parent_cld = cls->_parent != NULL ?
472 java_lang_ClassLoader::loader_data_acquire(cls->_parent) : NULL;
473 EventClassLoaderStatistics event;
474 event.set_classLoader(this_cld);
475 event.set_parentClassLoader(parent_cld);
476 event.set_classLoaderData((intptr_t)cls->_cld);
477 event.set_classCount(cls->_classes_count);
478 event.set_chunkSize(cls->_chunk_sz);
479 event.set_blockSize(cls->_block_sz);
480 event.set_unsafeAnonymousClassCount(cls->_anon_classes_count);
481 event.set_unsafeAnonymousChunkSize(cls->_anon_chunk_sz);
482 event.set_unsafeAnonymousBlockSize(cls->_anon_block_sz);
483 event.commit();
484 return true;
485 }
486
487 void createEvents(void) {
488 _stats->iterate(this);
489 }
490 };
491
492 class JfrClassLoaderStatsVMOperation : public ClassLoaderStatsVMOperation {
493 public:
494 JfrClassLoaderStatsVMOperation() : ClassLoaderStatsVMOperation(NULL) { }
495
496 void doit() {
497 JfrClassLoaderStatsClosure clsc;
498 ClassLoaderDataGraph::cld_do(&clsc);
499 clsc.createEvents();
500 }
501 };
502
503 TRACE_REQUEST_FUNC(ClassLoaderStatistics) {
504 JfrClassLoaderStatsVMOperation op;
505 VMThread::execute(&op);
506 }
507
508 TRACE_REQUEST_FUNC(CompilerStatistics) {
509 EventCompilerStatistics event;
510 event.set_compileCount(CompileBroker::get_total_compile_count());
511 event.set_bailoutCount(CompileBroker::get_total_bailout_count());
512 event.set_invalidatedCount(CompileBroker::get_total_invalidated_count());
513 event.set_osrCompileCount(CompileBroker::get_total_osr_compile_count());
514 event.set_standardCompileCount(CompileBroker::get_total_standard_compile_count());
515 event.set_osrBytesCompiled(CompileBroker::get_sum_osr_bytes_compiled());
516 event.set_standardBytesCompiled(CompileBroker::get_sum_standard_bytes_compiled());
517 event.set_nmetodsSize(CompileBroker::get_sum_nmethod_size());
518 event.set_nmetodCodeSize(CompileBroker::get_sum_nmethod_code_size());
519 event.set_peakTimeSpent(CompileBroker::get_peak_compilation_time());
520 event.set_totalTimeSpent(CompileBroker::get_total_compilation_time());
521 event.commit();
522 }
523
524 TRACE_REQUEST_FUNC(CompilerConfiguration) {
525 EventCompilerConfiguration event;
526 event.set_threadCount(CICompilerCount);
527 event.set_tieredCompilation(TieredCompilation);
528 event.commit();
529 }
530
531 TRACE_REQUEST_FUNC(CodeCacheStatistics) {
532 // Emit stats for all available code heaps
533 for (int bt = 0; bt < CodeBlobType::NumTypes; ++bt) {
534 if (CodeCache::heap_available(bt)) {
535 EventCodeCacheStatistics event;
536 event.set_codeBlobType((u1)bt);
537 event.set_startAddress((u8)CodeCache::low_bound(bt));
538 event.set_reservedTopAddress((u8)CodeCache::high_bound(bt));
539 event.set_entryCount(CodeCache::blob_count(bt));
540 event.set_methodCount(CodeCache::nmethod_count(bt));
541 event.set_adaptorCount(CodeCache::adapter_count(bt));
542 event.set_unallocatedCapacity(CodeCache::unallocated_capacity(bt));
543 event.set_fullCount(CodeCache::get_codemem_full_count(bt));
544 event.commit();
545 }
546 }
547 }
548
549 TRACE_REQUEST_FUNC(CodeCacheConfiguration) {
550 EventCodeCacheConfiguration event;
551 event.set_initialSize(InitialCodeCacheSize);
552 event.set_reservedSize(ReservedCodeCacheSize);
553 event.set_nonNMethodSize(NonNMethodCodeHeapSize);
554 event.set_profiledSize(ProfiledCodeHeapSize);
555 event.set_nonProfiledSize(NonProfiledCodeHeapSize);
556 event.set_expansionSize(CodeCacheExpansionSize);
557 event.set_minBlockLength(CodeCacheMinBlockLength);
558 event.set_startAddress((u8)CodeCache::low_bound());
559 event.set_reservedTopAddress((u8)CodeCache::high_bound());
560 event.commit();
561 }
562
563 TRACE_REQUEST_FUNC(CodeSweeperStatistics) {
564 EventCodeSweeperStatistics event;
565 event.set_sweepCount(NMethodSweeper::traversal_count());
566 event.set_methodReclaimedCount(NMethodSweeper::total_nof_methods_reclaimed());
567 event.set_totalSweepTime(NMethodSweeper::total_time_sweeping());
568 event.set_peakFractionTime(NMethodSweeper::peak_sweep_fraction_time());
569 event.set_peakSweepTime(NMethodSweeper::peak_sweep_time());
570 event.commit();
571 }
572
573 TRACE_REQUEST_FUNC(CodeSweeperConfiguration) {
574 EventCodeSweeperConfiguration event;
575 event.set_sweeperEnabled(MethodFlushing);
576 event.set_flushingEnabled(UseCodeCacheFlushing);
577 event.commit();
578 }