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/classLoaderStats.hpp"
28 #include "classfile/javaClasses.hpp"
29 #include "code/codeCache.hpp"
30 #include "compiler/compileBroker.hpp"
31 #include "gc/shared/gcConfiguration.hpp"
32 #include "gc/shared/gcTrace.hpp"
33 #include "gc/shared/objectCountEventSender.hpp"
34 #include "gc/shared/vmGCOperations.hpp"
35 #include "jfr/jfrEvents.hpp"
36 #include "jfr/periodic/jfrModuleEvent.hpp"
37 #include "jfr/periodic/jfrOSInterface.hpp"
38 #include "jfr/periodic/jfrThreadCPULoadEvent.hpp"
39 #include "jfr/periodic/jfrThreadDumpEvent.hpp"
40 #include "jfr/periodic/jfrNetworkUtilization.hpp"
41 #include "jfr/recorder/jfrRecorder.hpp"
42 #include "jfr/support/jfrThreadId.hpp"
43 #include "jfr/utilities/jfrTime.hpp"
44 #include "jfrfiles/jfrPeriodic.hpp"
45 #include "logging/log.hpp"
46 #include "memory/heapInspection.hpp"
47 #include "memory/resourceArea.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "runtime/arguments.hpp"
50 #include "runtime/flags/jvmFlag.hpp"
51 #include "runtime/globals.hpp"
52 #include "runtime/os.hpp"
53 #include "runtime/os_perf.hpp"
54 #include "runtime/thread.inline.hpp"
55 #include "runtime/threadSMR.hpp"
56 #include "runtime/sweeper.hpp"
57 #include "runtime/vmThread.hpp"
58 #include "services/classLoadingService.hpp"
59 #include "services/management.hpp"
60 #include "services/threadService.hpp"
61 #include "utilities/exceptions.hpp"
62 #include "utilities/globalDefinitions.hpp"
63 #if INCLUDE_G1GC
64 #include "gc/g1/g1HeapRegionEventSender.hpp"
65 #endif
66
67 /**
68 * JfrPeriodic class
69 * Implementation of declarations in
70 * xsl generated traceRequestables.hpp
71 */
72 #define TRACE_REQUEST_FUNC(id) void JfrPeriodicEventSet::request##id(void)
73
74 TRACE_REQUEST_FUNC(JVMInformation) {
75 ResourceMark rm;
76 EventJVMInformation event;
77 event.set_jvmName(VM_Version::vm_name());
78 event.set_jvmVersion(VM_Version::internal_vm_info_string());
79 event.set_javaArguments(Arguments::java_command());
80 event.set_jvmArguments(Arguments::jvm_args());
81 event.set_jvmFlags(Arguments::jvm_flags());
82 event.set_jvmStartTime(Management::vm_init_done_time());
83 event.set_pid(os::current_process_id());
84 event.commit();
85 }
86
87 TRACE_REQUEST_FUNC(OSInformation) {
88 ResourceMark rm;
89 char* os_name = NEW_RESOURCE_ARRAY(char, 2048);
90 JfrOSInterface::os_version(&os_name);
91 EventOSInformation event;
92 event.set_osVersion(os_name);
93 event.commit();
94 }
95
96 TRACE_REQUEST_FUNC(VirtualizationInformation) {
97 EventVirtualizationInformation event;
98 event.set_name(JfrOSInterface::virtualization_name());
99 event.commit();
100 }
101
102 TRACE_REQUEST_FUNC(ModuleRequire) {
103 JfrModuleEvent::generate_module_dependency_events();
104 }
105
106 TRACE_REQUEST_FUNC(ModuleExport) {
107 JfrModuleEvent::generate_module_export_events();
108 }
109
110 /*
111 * This is left empty on purpose, having ExecutionSample as a requestable
112 * is a way of getting the period. The period is passed to ThreadSampling::update_period.
113 * Implementation in jfrSamples.cpp
114 */
115 TRACE_REQUEST_FUNC(ExecutionSample) {
116 }
117 TRACE_REQUEST_FUNC(NativeMethodSample) {
118 }
119
120 TRACE_REQUEST_FUNC(ThreadDump) {
121 ResourceMark rm;
122 EventThreadDump event;
123 event.set_result(JfrDcmdEvent::thread_dump());
124 event.commit();
125 }
126
127 static int _native_library_callback(const char* name, address base, address top, void *param) {
128 EventNativeLibrary event(UNTIMED);
129 event.set_name(name);
130 event.set_baseAddress((u8)base);
131 event.set_topAddress((u8)top);
132 event.set_endtime(*(JfrTicks*) param);
133 event.commit();
134 return 0;
135 }
136
137 TRACE_REQUEST_FUNC(NativeLibrary) {
138 JfrTicks ts= JfrTicks::now();
139 os::get_loaded_modules_info(&_native_library_callback, (void *)&ts);
140 }
141
142 TRACE_REQUEST_FUNC(InitialEnvironmentVariable) {
143 JfrOSInterface::generate_initial_environment_variable_events();
144 }
145
146 TRACE_REQUEST_FUNC(CPUInformation) {
147 CPUInformation cpu_info;
148 int ret_val = JfrOSInterface::cpu_information(cpu_info);
149 if (ret_val == OS_ERR) {
150 log_debug(jfr, system)( "Unable to generate requestable event CPUInformation");
151 return;
152 }
153 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
154 return;
155 }
156 if (ret_val == OS_OK) {
157 EventCPUInformation event;
158 event.set_cpu(cpu_info.cpu_name());
159 event.set_description(cpu_info.cpu_description());
160 event.set_sockets(cpu_info.number_of_sockets());
161 event.set_cores(cpu_info.number_of_cores());
162 event.set_hwThreads(cpu_info.number_of_hardware_threads());
163 event.commit();
164 }
165 }
166
167 TRACE_REQUEST_FUNC(CPULoad) {
168 double u = 0; // user time
169 double s = 0; // kernel time
170 double t = 0; // total time
171 int ret_val = JfrOSInterface::cpu_loads_process(&u, &s, &t);
172 if (ret_val == OS_ERR) {
173 log_debug(jfr, system)( "Unable to generate requestable event CPULoad");
174 return;
175 }
176 if (ret_val == OS_OK) {
177 EventCPULoad event;
178 event.set_jvmUser((float)u);
179 event.set_jvmSystem((float)s);
180 event.set_machineTotal((float)t);
181 event.commit();
182 }
183 }
184
185 TRACE_REQUEST_FUNC(ThreadCPULoad) {
186 JfrThreadCPULoadEvent::send_events();
187 }
188
189 TRACE_REQUEST_FUNC(NetworkUtilization) {
190 JfrNetworkUtilization::send_events();
191 }
192
193 TRACE_REQUEST_FUNC(CPUTimeStampCounter) {
194 EventCPUTimeStampCounter event;
195 event.set_fastTimeEnabled(JfrTime::is_ft_enabled());
196 event.set_fastTimeAutoEnabled(JfrTime::is_ft_supported());
197 event.set_osFrequency(os::elapsed_frequency());
198 event.set_fastTimeFrequency(JfrTime::frequency());
199 event.commit();
200 }
201
202 TRACE_REQUEST_FUNC(SystemProcess) {
203 char pid_buf[16];
204 SystemProcess* processes = NULL;
205 int num_of_processes = 0;
206 JfrTicks start_time = JfrTicks::now();
207 int ret_val = JfrOSInterface::system_processes(&processes, &num_of_processes);
208 if (ret_val == OS_ERR) {
209 log_debug(jfr, system)( "Unable to generate requestable event SystemProcesses");
210 return;
211 }
212 JfrTicks end_time = JfrTicks::now();
213 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
214 return;
215 }
216 if (ret_val == OS_OK) {
217 // feature is implemented, write real event
218 while (processes != NULL) {
219 SystemProcess* tmp = processes;
220 const char* info = processes->command_line();
221 if (info == NULL) {
222 info = processes->path();
223 }
224 if (info == NULL) {
225 info = processes->name();
226 }
227 if (info == NULL) {
228 info = "?";
229 }
230 jio_snprintf(pid_buf, sizeof(pid_buf), "%d", processes->pid());
231 EventSystemProcess event(UNTIMED);
232 event.set_pid(pid_buf);
233 event.set_commandLine(info);
234 event.set_starttime(start_time);
235 event.set_endtime(end_time);
236 event.commit();
237 processes = processes->next();
238 delete tmp;
239 }
240 }
241 }
242
243 TRACE_REQUEST_FUNC(ThreadContextSwitchRate) {
244 double rate = 0.0;
245 int ret_val = JfrOSInterface::context_switch_rate(&rate);
246 if (ret_val == OS_ERR) {
247 log_debug(jfr, system)( "Unable to generate requestable event ThreadContextSwitchRate");
248 return;
249 }
250 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
251 return;
252 }
253 if (ret_val == OS_OK) {
254 EventThreadContextSwitchRate event;
255 event.set_switchRate((float)rate + 0.0f);
256 event.commit();
257 }
258 }
259
260 #define SEND_FLAGS_OF_TYPE(eventType, flagType) \
261 do { \
262 JVMFlag *flag = JVMFlag::flags; \
263 while (flag->_name != NULL) { \
264 if (flag->is_ ## flagType()) { \
265 if (flag->is_unlocked()) { \
266 Event ## eventType event; \
267 event.set_name(flag->_name); \
268 event.set_value(flag->get_ ## flagType()); \
269 event.set_origin(flag->get_origin()); \
270 event.commit(); \
271 } \
272 } \
273 ++flag; \
274 } \
275 } while (0)
276
277 TRACE_REQUEST_FUNC(IntFlag) {
278 SEND_FLAGS_OF_TYPE(IntFlag, int);
279 }
280
281 TRACE_REQUEST_FUNC(UnsignedIntFlag) {
282 SEND_FLAGS_OF_TYPE(UnsignedIntFlag, uint);
283 }
284
285 TRACE_REQUEST_FUNC(LongFlag) {
286 SEND_FLAGS_OF_TYPE(LongFlag, intx);
287 }
288
289 TRACE_REQUEST_FUNC(UnsignedLongFlag) {
290 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uintx);
291 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uint64_t);
292 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, size_t);
293 }
294
295 TRACE_REQUEST_FUNC(DoubleFlag) {
296 SEND_FLAGS_OF_TYPE(DoubleFlag, double);
297 }
298
299 TRACE_REQUEST_FUNC(BooleanFlag) {
300 SEND_FLAGS_OF_TYPE(BooleanFlag, bool);
301 }
302
303 TRACE_REQUEST_FUNC(StringFlag) {
304 SEND_FLAGS_OF_TYPE(StringFlag, ccstr);
305 }
306
307 class VM_GC_SendObjectCountEvent : public VM_GC_HeapInspection {
308 public:
309 VM_GC_SendObjectCountEvent() : VM_GC_HeapInspection(NULL, true) {}
310 virtual void doit() {
311 ObjectCountEventSender::enable_requestable_event();
312 collect();
313 ObjectCountEventSender::disable_requestable_event();
314 }
315 };
316
317 TRACE_REQUEST_FUNC(ObjectCount) {
318 VM_GC_SendObjectCountEvent op;
319 VMThread::execute(&op);
320 }
321
322 TRACE_REQUEST_FUNC(G1HeapRegionInformation) {
323 G1GC_ONLY(G1HeapRegionEventSender::send_events());
324 }
325
326 // Java Mission Control (JMC) uses (Java) Long.MIN_VALUE to describe that a
327 // long value is undefined.
328 static jlong jmc_undefined_long = min_jlong;
329
330 TRACE_REQUEST_FUNC(GCConfiguration) {
331 GCConfiguration conf;
332 jlong pause_target = conf.has_pause_target_default_value() ? jmc_undefined_long : conf.pause_target();
333 EventGCConfiguration event;
334 event.set_youngCollector(conf.young_collector());
335 event.set_oldCollector(conf.old_collector());
336 event.set_parallelGCThreads(conf.num_parallel_gc_threads());
337 event.set_concurrentGCThreads(conf.num_concurrent_gc_threads());
338 event.set_usesDynamicGCThreads(conf.uses_dynamic_gc_threads());
339 event.set_isExplicitGCConcurrent(conf.is_explicit_gc_concurrent());
340 event.set_isExplicitGCDisabled(conf.is_explicit_gc_disabled());
341 event.set_gcTimeRatio(conf.gc_time_ratio());
342 event.set_pauseTarget((s8)pause_target);
343 event.commit();
344 }
345
346 TRACE_REQUEST_FUNC(GCTLABConfiguration) {
347 GCTLABConfiguration conf;
348 EventGCTLABConfiguration event;
349 event.set_usesTLABs(conf.uses_tlabs());
350 event.set_minTLABSize(conf.min_tlab_size());
351 event.set_tlabRefillWasteLimit(conf.tlab_refill_waste_limit());
352 event.commit();
353 }
354
355 TRACE_REQUEST_FUNC(GCSurvivorConfiguration) {
356 GCSurvivorConfiguration conf;
357 EventGCSurvivorConfiguration event;
358 event.set_maxTenuringThreshold(conf.max_tenuring_threshold());
359 event.set_initialTenuringThreshold(conf.initial_tenuring_threshold());
360 event.commit();
361 }
362
363 TRACE_REQUEST_FUNC(GCHeapConfiguration) {
364 GCHeapConfiguration conf;
365 EventGCHeapConfiguration event;
366 event.set_minSize(conf.min_size());
367 event.set_maxSize(conf.max_size());
368 event.set_initialSize(conf.initial_size());
369 event.set_usesCompressedOops(conf.uses_compressed_oops());
370 event.set_compressedOopsMode(conf.narrow_oop_mode());
371 event.set_objectAlignment(conf.object_alignment_in_bytes());
372 event.set_heapAddressBits(conf.heap_address_size_in_bits());
373 event.commit();
374 }
375
376 TRACE_REQUEST_FUNC(YoungGenerationConfiguration) {
377 GCYoungGenerationConfiguration conf;
378 jlong max_size = conf.has_max_size_default_value() ? jmc_undefined_long : conf.max_size();
379 EventYoungGenerationConfiguration event;
380 event.set_maxSize((u8)max_size);
381 event.set_minSize(conf.min_size());
382 event.set_newRatio(conf.new_ratio());
383 event.commit();
384 }
385
386 TRACE_REQUEST_FUNC(InitialSystemProperty) {
387 SystemProperty* p = Arguments::system_properties();
388 JfrTicks time_stamp = JfrTicks::now();
389 while (p != NULL) {
390 if (!p->internal()) {
391 EventInitialSystemProperty event(UNTIMED);
392 event.set_key(p->key());
393 event.set_value(p->value());
394 event.set_endtime(time_stamp);
395 event.commit();
396 }
397 p = p->next();
398 }
399 }
400
401 TRACE_REQUEST_FUNC(ThreadAllocationStatistics) {
402 ResourceMark rm;
403 int initial_size = Threads::number_of_threads();
404 GrowableArray<jlong> allocated(initial_size);
405 GrowableArray<traceid> thread_ids(initial_size);
406 JfrTicks time_stamp = JfrTicks::now();
407 {
408 // Collect allocation statistics while holding threads lock
409 MutexLockerEx ml(Threads_lock);
410 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) {
411 allocated.append(jt->cooked_allocated_bytes());
412 thread_ids.append(JFR_THREAD_ID(jt));
413 }
414 }
415
416 // Write allocation statistics to buffer.
417 for(int i = 0; i < thread_ids.length(); i++) {
418 EventThreadAllocationStatistics event(UNTIMED);
419 event.set_allocated(allocated.at(i));
420 event.set_thread(thread_ids.at(i));
421 event.set_endtime(time_stamp);
422 event.commit();
423 }
424 }
425
426 /**
427 * PhysicalMemory event represents:
428 *
429 * @totalSize == The amount of physical memory (hw) installed and reported by the OS, in bytes.
430 * @usedSize == The amount of physical memory currently in use in the system (reserved/committed), in bytes.
431 *
432 * Both fields are systemwide, i.e. represents the entire OS/HW environment.
433 * These fields do not include virtual memory.
434 *
435 * If running inside a guest OS on top of a hypervisor in a virtualized environment,
436 * the total memory reported is the amount of memory configured for the guest OS by the hypervisor.
437 */
438 TRACE_REQUEST_FUNC(PhysicalMemory) {
439 u8 totalPhysicalMemory = os::physical_memory();
440 EventPhysicalMemory event;
441 event.set_totalSize(totalPhysicalMemory);
442 event.set_usedSize(totalPhysicalMemory - os::available_memory());
443 event.commit();
444 }
445
446 TRACE_REQUEST_FUNC(JavaThreadStatistics) {
447 EventJavaThreadStatistics event;
448 event.set_activeCount(ThreadService::get_live_thread_count());
449 event.set_daemonCount(ThreadService::get_daemon_thread_count());
450 event.set_accumulatedCount(ThreadService::get_total_thread_count());
451 event.set_peakCount(ThreadService::get_peak_thread_count());
452 event.commit();
453 }
454
455 TRACE_REQUEST_FUNC(ClassLoadingStatistics) {
456 EventClassLoadingStatistics event;
457 event.set_loadedClassCount(ClassLoadingService::loaded_class_count());
458 event.set_unloadedClassCount(ClassLoadingService::unloaded_class_count());
459 event.commit();
460 }
461
462 class JfrClassLoaderStatsClosure : public ClassLoaderStatsClosure {
463 public:
464 JfrClassLoaderStatsClosure() : ClassLoaderStatsClosure(NULL) {}
465
466 bool do_entry(oop const& key, ClassLoaderStats* const& cls) {
467 const ClassLoaderData* this_cld = cls->_class_loader != NULL ?
468 java_lang_ClassLoader::loader_data(cls->_class_loader) : (ClassLoaderData*)NULL;
469 const ClassLoaderData* parent_cld = cls->_parent != NULL ?
470 java_lang_ClassLoader::loader_data(cls->_parent) : (ClassLoaderData*)NULL;
471 EventClassLoaderStatistics event;
472 event.set_classLoader(this_cld);
473 event.set_parentClassLoader(parent_cld);
474 event.set_classLoaderData((intptr_t)cls->_cld);
475 event.set_classCount(cls->_classes_count);
476 event.set_chunkSize(cls->_chunk_sz);
477 event.set_blockSize(cls->_block_sz);
478 event.set_anonymousClassCount(cls->_anon_classes_count);
479 event.set_anonymousChunkSize(cls->_anon_chunk_sz);
480 event.set_anonymousBlockSize(cls->_anon_block_sz);
481 event.commit();
482 return true;
483 }
484
485 void createEvents(void) {
486 _stats->iterate(this);
487 }
488 };
489
490 class JfrClassLoaderStatsVMOperation : public ClassLoaderStatsVMOperation {
491 public:
492 JfrClassLoaderStatsVMOperation() : ClassLoaderStatsVMOperation(NULL) { }
493
494 void doit() {
495 JfrClassLoaderStatsClosure clsc;
496 ClassLoaderDataGraph::cld_do(&clsc);
497 clsc.createEvents();
498 }
499 };
500
501 TRACE_REQUEST_FUNC(ClassLoaderStatistics) {
502 JfrClassLoaderStatsVMOperation op;
503 VMThread::execute(&op);
504 }
505
506 TRACE_REQUEST_FUNC(CompilerStatistics) {
507 EventCompilerStatistics event;
508 event.set_compileCount(CompileBroker::get_total_compile_count());
509 event.set_bailoutCount(CompileBroker::get_total_bailout_count());
510 event.set_invalidatedCount(CompileBroker::get_total_invalidated_count());
511 event.set_osrCompileCount(CompileBroker::get_total_osr_compile_count());
512 event.set_standardCompileCount(CompileBroker::get_total_standard_compile_count());
513 event.set_osrBytesCompiled(CompileBroker::get_sum_osr_bytes_compiled());
514 event.set_standardBytesCompiled(CompileBroker::get_sum_standard_bytes_compiled());
515 event.set_nmethodsSize(CompileBroker::get_sum_nmethod_size());
516 event.set_nmethodCodeSize(CompileBroker::get_sum_nmethod_code_size());
517 event.set_peakTimeSpent(CompileBroker::get_peak_compilation_time());
518 event.set_totalTimeSpent(CompileBroker::get_total_compilation_time());
519 event.commit();
520 }
521
522 TRACE_REQUEST_FUNC(CompilerConfiguration) {
523 EventCompilerConfiguration event;
524 event.set_threadCount(CICompilerCount);
525 event.set_tieredCompilation(TieredCompilation);
526 event.commit();
527 }
528
529 TRACE_REQUEST_FUNC(CodeCacheStatistics) {
530 // Emit stats for all available code heaps
531 for (int bt = 0; bt < CodeBlobType::NumTypes; ++bt) {
532 if (CodeCache::heap_available(bt)) {
533 EventCodeCacheStatistics event;
534 event.set_codeBlobType((u1)bt);
535 event.set_startAddress((u8)CodeCache::low_bound(bt));
536 event.set_reservedTopAddress((u8)CodeCache::high_bound(bt));
537 event.set_entryCount(CodeCache::blob_count(bt));
538 event.set_methodCount(CodeCache::nmethod_count(bt));
539 event.set_adaptorCount(CodeCache::adapter_count(bt));
540 event.set_unallocatedCapacity(CodeCache::unallocated_capacity(bt));
541 event.set_fullCount(CodeCache::get_codemem_full_count(bt));
542 event.commit();
543 }
544 }
545 }
546
547 TRACE_REQUEST_FUNC(CodeCacheConfiguration) {
548 EventCodeCacheConfiguration event;
549 event.set_initialSize(InitialCodeCacheSize);
550 event.set_reservedSize(ReservedCodeCacheSize);
551 event.set_nonNMethodSize(NonNMethodCodeHeapSize);
552 event.set_profiledSize(ProfiledCodeHeapSize);
553 event.set_nonProfiledSize(NonProfiledCodeHeapSize);
554 event.set_expansionSize(CodeCacheExpansionSize);
555 event.set_minBlockLength(CodeCacheMinBlockLength);
556 event.set_startAddress((u8)CodeCache::low_bound());
557 event.set_reservedTopAddress((u8)CodeCache::high_bound());
558 event.commit();
559 }
560
561 TRACE_REQUEST_FUNC(CodeSweeperStatistics) {
562 EventCodeSweeperStatistics event;
563 event.set_sweepCount(NMethodSweeper::traversal_count());
564 event.set_methodReclaimedCount(NMethodSweeper::total_nof_methods_reclaimed());
565 event.set_totalSweepTime(NMethodSweeper::total_time_sweeping());
566 event.set_peakFractionTime(NMethodSweeper::peak_sweep_fraction_time());
567 event.set_peakSweepTime(NMethodSweeper::peak_sweep_time());
568 event.commit();
569 }
570
571 TRACE_REQUEST_FUNC(CodeSweeperConfiguration) {
572 EventCodeSweeperConfiguration event;
573 event.set_sweeperEnabled(MethodFlushing);
574 event.set_flushingEnabled(UseCodeCacheFlushing);
575 event.commit();
576 }