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