1 /*
2 * Copyright (c) 2012, 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 "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/gcVMOperations.hpp"
36 #include "gc/shared/objectCountEventSender.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 #if INCLUDE_SHENANDOAHGC
66 #include "gc/shenandoah/shenandoahJfrSupport.hpp"
67 #endif
68 /**
69 * JfrPeriodic class
70 * Implementation of declarations in
71 * xsl generated traceRequestables.hpp
72 */
73 #define TRACE_REQUEST_FUNC(id) void JfrPeriodicEventSet::request##id(void)
74
75 TRACE_REQUEST_FUNC(JVMInformation) {
76 ResourceMark rm;
77 EventJVMInformation event;
78 event.set_jvmName(VM_Version::vm_name());
79 event.set_jvmVersion(VM_Version::internal_vm_info_string());
80 event.set_javaArguments(Arguments::java_command());
81 event.set_jvmArguments(Arguments::jvm_args());
82 event.set_jvmFlags(Arguments::jvm_flags());
83 event.set_jvmStartTime(Management::vm_init_done_time());
84 event.set_pid(os::current_process_id());
85 event.commit();
86 }
87
88 TRACE_REQUEST_FUNC(OSInformation) {
89 ResourceMark rm;
90 char* os_name = NEW_RESOURCE_ARRAY(char, 2048);
91 JfrOSInterface::os_version(&os_name);
92 EventOSInformation event;
93 event.set_osVersion(os_name);
94 event.commit();
95 }
96
97 TRACE_REQUEST_FUNC(ModuleRequire) {
98 JfrModuleEvent::generate_module_dependency_events();
99 }
100
101 TRACE_REQUEST_FUNC(ModuleExport) {
102 JfrModuleEvent::generate_module_export_events();
103 }
104
105 /*
106 * This is left empty on purpose, having ExecutionSample as a requestable
107 * is a way of getting the period. The period is passed to ThreadSampling::update_period.
108 * Implementation in jfrSamples.cpp
109 */
110 TRACE_REQUEST_FUNC(ExecutionSample) {
111 }
112 TRACE_REQUEST_FUNC(NativeMethodSample) {
113 }
114
115 TRACE_REQUEST_FUNC(ThreadDump) {
116 ResourceMark rm;
117 EventThreadDump event;
118 event.set_result(JfrDcmdEvent::thread_dump());
119 event.commit();
120 }
121
122 static int _native_library_callback(const char* name, address base, address top, void *param) {
123 EventNativeLibrary event(UNTIMED);
124 event.set_name(name);
125 event.set_baseAddress((u8)base);
126 event.set_topAddress((u8)top);
127 event.set_endtime(*(JfrTicks*) param);
128 event.commit();
129 return 0;
130 }
131
132 TRACE_REQUEST_FUNC(NativeLibrary) {
133 JfrTicks ts= JfrTicks::now();
134 os::get_loaded_modules_info(&_native_library_callback, (void *)&ts);
135 }
136
137 TRACE_REQUEST_FUNC(InitialEnvironmentVariable) {
138 JfrOSInterface::generate_initial_environment_variable_events();
139 }
140
141 TRACE_REQUEST_FUNC(CPUInformation) {
142 CPUInformation cpu_info;
143 int ret_val = JfrOSInterface::cpu_information(cpu_info);
144 if (ret_val == OS_ERR) {
145 log_debug(jfr, system)( "Unable to generate requestable event CPUInformation");
146 return;
147 }
148 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
149 return;
150 }
151 if (ret_val == OS_OK) {
152 EventCPUInformation event;
153 event.set_cpu(cpu_info.cpu_name());
154 event.set_description(cpu_info.cpu_description());
155 event.set_sockets(cpu_info.number_of_sockets());
156 event.set_cores(cpu_info.number_of_cores());
157 event.set_hwThreads(cpu_info.number_of_hardware_threads());
158 event.commit();
159 }
160 }
161
162 TRACE_REQUEST_FUNC(CPULoad) {
163 double u = 0; // user time
164 double s = 0; // kernel time
165 double t = 0; // total time
166 int ret_val = JfrOSInterface::cpu_loads_process(&u, &s, &t);
167 if (ret_val == OS_ERR) {
168 log_debug(jfr, system)( "Unable to generate requestable event CPULoad");
169 return;
170 }
171 if (ret_val == OS_OK) {
172 EventCPULoad event;
173 event.set_jvmUser((float)u);
174 event.set_jvmSystem((float)s);
175 event.set_machineTotal((float)t);
176 event.commit();
177 }
178 }
179
180 TRACE_REQUEST_FUNC(ThreadCPULoad) {
181 JfrThreadCPULoadEvent::send_events();
182 }
183
184 TRACE_REQUEST_FUNC(NetworkUtilization) {
185 JfrNetworkUtilization::send_events();
186 }
187
188 TRACE_REQUEST_FUNC(CPUTimeStampCounter) {
189 EventCPUTimeStampCounter event;
190 event.set_fastTimeEnabled(JfrTime::is_ft_enabled());
191 event.set_fastTimeAutoEnabled(JfrTime::is_ft_supported());
192 event.set_osFrequency(os::elapsed_frequency());
193 event.set_fastTimeFrequency(JfrTime::frequency());
194 event.commit();
195 }
196
197 TRACE_REQUEST_FUNC(SystemProcess) {
198 char pid_buf[16];
199 SystemProcess* processes = NULL;
200 int num_of_processes = 0;
201 JfrTicks start_time = JfrTicks::now();
202 int ret_val = JfrOSInterface::system_processes(&processes, &num_of_processes);
203 if (ret_val == OS_ERR) {
204 log_debug(jfr, system)( "Unable to generate requestable event SystemProcesses");
205 return;
206 }
207 JfrTicks end_time = JfrTicks::now();
208 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
209 return;
210 }
211 if (ret_val == OS_OK) {
212 // feature is implemented, write real event
213 while (processes != NULL) {
214 SystemProcess* tmp = processes;
215 const char* info = processes->command_line();
216 if (info == NULL) {
217 info = processes->path();
218 }
219 if (info == NULL) {
220 info = processes->name();
221 }
222 if (info == NULL) {
223 info = "?";
224 }
225 jio_snprintf(pid_buf, sizeof(pid_buf), "%d", processes->pid());
226 EventSystemProcess event(UNTIMED);
227 event.set_pid(pid_buf);
228 event.set_commandLine(info);
229 event.set_starttime(start_time);
230 event.set_endtime(end_time);
231 event.commit();
232 processes = processes->next();
233 delete tmp;
234 }
235 }
236 }
237
238 TRACE_REQUEST_FUNC(ThreadContextSwitchRate) {
239 double rate = 0.0;
240 int ret_val = JfrOSInterface::context_switch_rate(&rate);
241 if (ret_val == OS_ERR) {
242 log_debug(jfr, system)( "Unable to generate requestable event ThreadContextSwitchRate");
243 return;
244 }
245 if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
246 return;
247 }
248 if (ret_val == OS_OK) {
249 EventThreadContextSwitchRate event;
250 event.set_switchRate((float)rate + 0.0f);
251 event.commit();
252 }
253 }
254
255 #define SEND_FLAGS_OF_TYPE(eventType, flagType) \
256 do { \
257 JVMFlag *flag = JVMFlag::flags; \
258 while (flag->_name != NULL) { \
259 if (flag->is_ ## flagType()) { \
260 if (flag->is_unlocked()) { \
261 Event ## eventType event; \
262 event.set_name(flag->_name); \
263 event.set_value(flag->get_ ## flagType()); \
264 event.set_origin(flag->get_origin()); \
265 event.commit(); \
266 } \
267 } \
268 ++flag; \
269 } \
270 } while (0)
271
272 TRACE_REQUEST_FUNC(IntFlag) {
273 SEND_FLAGS_OF_TYPE(IntFlag, int);
274 }
275
276 TRACE_REQUEST_FUNC(UnsignedIntFlag) {
277 SEND_FLAGS_OF_TYPE(UnsignedIntFlag, uint);
278 }
279
280 TRACE_REQUEST_FUNC(LongFlag) {
281 SEND_FLAGS_OF_TYPE(LongFlag, intx);
282 }
283
284 TRACE_REQUEST_FUNC(UnsignedLongFlag) {
285 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uintx);
286 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uint64_t);
287 SEND_FLAGS_OF_TYPE(UnsignedLongFlag, size_t);
288 }
289
290 TRACE_REQUEST_FUNC(DoubleFlag) {
291 SEND_FLAGS_OF_TYPE(DoubleFlag, double);
292 }
293
294 TRACE_REQUEST_FUNC(BooleanFlag) {
295 SEND_FLAGS_OF_TYPE(BooleanFlag, bool);
296 }
297
298 TRACE_REQUEST_FUNC(StringFlag) {
299 SEND_FLAGS_OF_TYPE(StringFlag, ccstr);
300 }
301
302 class VM_GC_SendObjectCountEvent : public VM_GC_HeapInspection {
303 public:
304 VM_GC_SendObjectCountEvent() : VM_GC_HeapInspection(NULL, true) {}
305 virtual void doit() {
306 ObjectCountEventSender::enable_requestable_event();
307 collect();
308 ObjectCountEventSender::disable_requestable_event();
309 }
310 };
311
312 TRACE_REQUEST_FUNC(ObjectCount) {
313 VM_GC_SendObjectCountEvent op;
314 VMThread::execute(&op);
315 }
316
317 class VM_G1SendHeapRegionInfoEvents : public VM_Operation {
318 virtual void doit() {
319 G1HeapRegionEventSender::send_events();
320 }
321 virtual VMOp_Type type() const { return VMOp_HeapIterateOperation; }
322 };
323
324 TRACE_REQUEST_FUNC(G1HeapRegionInformation) {
325 if (UseG1GC) {
326 VM_G1SendHeapRegionInfoEvents op;
327 VMThread::execute(&op);
328 }
329 }
330
331 // Java Mission Control (JMC) uses (Java) Long.MIN_VALUE to describe that a
332 // long value is undefined.
333 static jlong jmc_undefined_long = min_jlong;
334
335 TRACE_REQUEST_FUNC(GCConfiguration) {
336 GCConfiguration conf;
337 jlong pause_target = conf.has_pause_target_default_value() ? jmc_undefined_long : conf.pause_target();
338 EventGCConfiguration event;
339 event.set_youngCollector(conf.young_collector());
340 event.set_oldCollector(conf.old_collector());
341 event.set_parallelGCThreads(conf.num_parallel_gc_threads());
342 event.set_concurrentGCThreads(conf.num_concurrent_gc_threads());
343 event.set_usesDynamicGCThreads(conf.uses_dynamic_gc_threads());
344 event.set_isExplicitGCConcurrent(conf.is_explicit_gc_concurrent());
345 event.set_isExplicitGCDisabled(conf.is_explicit_gc_disabled());
346 event.set_gcTimeRatio(conf.gc_time_ratio());
347 event.set_pauseTarget((s8)pause_target);
348 event.commit();
349 }
350
351 TRACE_REQUEST_FUNC(GCTLABConfiguration) {
352 GCTLABConfiguration conf;
353 EventGCTLABConfiguration event;
354 event.set_usesTLABs(conf.uses_tlabs());
355 event.set_minTLABSize(conf.min_tlab_size());
356 event.set_tlabRefillWasteLimit(conf.tlab_refill_waste_limit());
357 event.commit();
358 }
359
360 TRACE_REQUEST_FUNC(GCSurvivorConfiguration) {
361 GCSurvivorConfiguration conf;
362 EventGCSurvivorConfiguration event;
363 event.set_maxTenuringThreshold(conf.max_tenuring_threshold());
364 event.set_initialTenuringThreshold(conf.initial_tenuring_threshold());
365 event.commit();
366 }
367
368 TRACE_REQUEST_FUNC(GCHeapConfiguration) {
369 GCHeapConfiguration conf;
370 EventGCHeapConfiguration event;
371 event.set_minSize(conf.min_size());
372 event.set_maxSize(conf.max_size());
373 event.set_initialSize(conf.initial_size());
374 event.set_usesCompressedOops(conf.uses_compressed_oops());
375 event.set_compressedOopsMode(conf.narrow_oop_mode());
376 event.set_objectAlignment(conf.object_alignment_in_bytes());
377 event.set_heapAddressBits(conf.heap_address_size_in_bits());
378 event.commit();
379 }
380
381 TRACE_REQUEST_FUNC(YoungGenerationConfiguration) {
382 GCYoungGenerationConfiguration conf;
383 jlong max_size = conf.has_max_size_default_value() ? jmc_undefined_long : conf.max_size();
384 EventYoungGenerationConfiguration event;
385 event.set_maxSize((u8)max_size);
386 event.set_minSize(conf.min_size());
387 event.set_newRatio(conf.new_ratio());
388 event.commit();
389 }
390
391 TRACE_REQUEST_FUNC(InitialSystemProperty) {
392 SystemProperty* p = Arguments::system_properties();
393 JfrTicks time_stamp = JfrTicks::now();
394 while (p != NULL) {
395 if (!p->internal()) {
396 EventInitialSystemProperty event(UNTIMED);
397 event.set_key(p->key());
398 event.set_value(p->value());
399 event.set_endtime(time_stamp);
400 event.commit();
401 }
402 p = p->next();
403 }
404 }
405
406 TRACE_REQUEST_FUNC(ThreadAllocationStatistics) {
407 ResourceMark rm;
408 int initial_size = Threads::number_of_threads();
409 GrowableArray<jlong> allocated(initial_size);
410 GrowableArray<traceid> thread_ids(initial_size);
411 JfrTicks time_stamp = JfrTicks::now();
412 {
413 // Collect allocation statistics while holding threads lock
414 MutexLockerEx ml(Threads_lock);
415 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) {
416 allocated.append(jt->cooked_allocated_bytes());
417 thread_ids.append(JFR_THREAD_ID(jt));
418 }
419 }
420
421 // Write allocation statistics to buffer.
422 for(int i = 0; i < thread_ids.length(); i++) {
423 EventThreadAllocationStatistics event(UNTIMED);
424 event.set_allocated(allocated.at(i));
425 event.set_thread(thread_ids.at(i));
426 event.set_endtime(time_stamp);
427 event.commit();
428 }
429 }
430
431 /**
432 * PhysicalMemory event represents:
433 *
434 * @totalSize == The amount of physical memory (hw) installed and reported by the OS, in bytes.
435 * @usedSize == The amount of physical memory currently in use in the system (reserved/committed), in bytes.
436 *
437 * Both fields are systemwide, i.e. represents the entire OS/HW environment.
438 * These fields do not include virtual memory.
439 *
440 * If running inside a guest OS on top of a hypervisor in a virtualized environment,
441 * the total memory reported is the amount of memory configured for the guest OS by the hypervisor.
442 */
443 TRACE_REQUEST_FUNC(PhysicalMemory) {
444 u8 totalPhysicalMemory = os::physical_memory();
445 EventPhysicalMemory event;
446 event.set_totalSize(totalPhysicalMemory);
447 event.set_usedSize(totalPhysicalMemory - os::available_memory());
448 event.commit();
449 }
450
451 TRACE_REQUEST_FUNC(JavaThreadStatistics) {
452 EventJavaThreadStatistics event;
453 event.set_activeCount(ThreadService::get_live_thread_count());
454 event.set_daemonCount(ThreadService::get_daemon_thread_count());
455 event.set_accumulatedCount(ThreadService::get_total_thread_count());
456 event.set_peakCount(ThreadService::get_peak_thread_count());
457 event.commit();
458 }
459
460 TRACE_REQUEST_FUNC(ClassLoadingStatistics) {
461 EventClassLoadingStatistics event;
462 event.set_loadedClassCount(ClassLoadingService::loaded_class_count());
463 event.set_unloadedClassCount(ClassLoadingService::unloaded_class_count());
464 event.commit();
465 }
466
467 class JfrClassLoaderStatsClosure : public ClassLoaderStatsClosure {
468 public:
469 JfrClassLoaderStatsClosure() : ClassLoaderStatsClosure(NULL) {}
470
471 bool do_entry(oop const& key, ClassLoaderStats* const& cls) {
472 const ClassLoaderData* this_cld = cls->_class_loader != NULL ?
473 java_lang_ClassLoader::loader_data_acquire(cls->_class_loader) : NULL;
474 const ClassLoaderData* parent_cld = cls->_parent != NULL ?
475 java_lang_ClassLoader::loader_data_acquire(cls->_parent) : NULL;
476 EventClassLoaderStatistics event;
477 event.set_classLoader(this_cld);
478 event.set_parentClassLoader(parent_cld);
479 event.set_classLoaderData((intptr_t)cls->_cld);
480 event.set_classCount(cls->_classes_count);
481 event.set_chunkSize(cls->_chunk_sz);
482 event.set_blockSize(cls->_block_sz);
483 event.set_unsafeAnonymousClassCount(cls->_anon_classes_count);
484 event.set_unsafeAnonymousChunkSize(cls->_anon_chunk_sz);
485 event.set_unsafeAnonymousBlockSize(cls->_anon_block_sz);
486 event.commit();
487 return true;
488 }
489
490 void createEvents(void) {
491 _stats->iterate(this);
492 }
493 };
494
495 class JfrClassLoaderStatsVMOperation : public ClassLoaderStatsVMOperation {
496 public:
497 JfrClassLoaderStatsVMOperation() : ClassLoaderStatsVMOperation(NULL) { }
498
499 void doit() {
500 JfrClassLoaderStatsClosure clsc;
501 ClassLoaderDataGraph::loaded_cld_do(&clsc);
502 clsc.createEvents();
503 }
504 };
505
506 TRACE_REQUEST_FUNC(ClassLoaderStatistics) {
507 JfrClassLoaderStatsVMOperation op;
508 VMThread::execute(&op);
509 }
510
511 TRACE_REQUEST_FUNC(CompilerStatistics) {
512 EventCompilerStatistics event;
513 event.set_compileCount(CompileBroker::get_total_compile_count());
514 event.set_bailoutCount(CompileBroker::get_total_bailout_count());
515 event.set_invalidatedCount(CompileBroker::get_total_invalidated_count());
516 event.set_osrCompileCount(CompileBroker::get_total_osr_compile_count());
517 event.set_standardCompileCount(CompileBroker::get_total_standard_compile_count());
518 event.set_osrBytesCompiled(CompileBroker::get_sum_osr_bytes_compiled());
519 event.set_standardBytesCompiled(CompileBroker::get_sum_standard_bytes_compiled());
520 event.set_nmetodsSize(CompileBroker::get_sum_nmethod_size());
521 event.set_nmetodCodeSize(CompileBroker::get_sum_nmethod_code_size());
522 event.set_peakTimeSpent(CompileBroker::get_peak_compilation_time());
523 event.set_totalTimeSpent(CompileBroker::get_total_compilation_time());
524 event.commit();
525 }
526
527 TRACE_REQUEST_FUNC(CompilerConfiguration) {
528 EventCompilerConfiguration event;
529 event.set_threadCount(CICompilerCount);
530 event.set_tieredCompilation(TieredCompilation);
531 event.commit();
532 }
533
534 TRACE_REQUEST_FUNC(CodeCacheStatistics) {
535 // Emit stats for all available code heaps
536 for (int bt = 0; bt < CodeBlobType::NumTypes; ++bt) {
537 if (CodeCache::heap_available(bt)) {
538 EventCodeCacheStatistics event;
539 event.set_codeBlobType((u1)bt);
540 event.set_startAddress((u8)CodeCache::low_bound(bt));
541 event.set_reservedTopAddress((u8)CodeCache::high_bound(bt));
542 event.set_entryCount(CodeCache::blob_count(bt));
543 event.set_methodCount(CodeCache::nmethod_count(bt));
544 event.set_adaptorCount(CodeCache::adapter_count(bt));
545 event.set_unallocatedCapacity(CodeCache::unallocated_capacity(bt));
546 event.set_fullCount(CodeCache::get_codemem_full_count(bt));
547 event.commit();
548 }
549 }
550 }
551
552 TRACE_REQUEST_FUNC(CodeCacheConfiguration) {
553 EventCodeCacheConfiguration event;
554 event.set_initialSize(InitialCodeCacheSize);
555 event.set_reservedSize(ReservedCodeCacheSize);
556 event.set_nonNMethodSize(NonNMethodCodeHeapSize);
557 event.set_profiledSize(ProfiledCodeHeapSize);
558 event.set_nonProfiledSize(NonProfiledCodeHeapSize);
559 event.set_expansionSize(CodeCacheExpansionSize);
560 event.set_minBlockLength(CodeCacheMinBlockLength);
561 event.set_startAddress((u8)CodeCache::low_bound());
562 event.set_reservedTopAddress((u8)CodeCache::high_bound());
563 event.commit();
564 }
565
566 TRACE_REQUEST_FUNC(CodeSweeperStatistics) {
567 EventCodeSweeperStatistics event;
568 event.set_sweepCount(NMethodSweeper::traversal_count());
569 event.set_methodReclaimedCount(NMethodSweeper::total_nof_methods_reclaimed());
570 event.set_totalSweepTime(NMethodSweeper::total_time_sweeping());
571 event.set_peakFractionTime(NMethodSweeper::peak_sweep_fraction_time());
572 event.set_peakSweepTime(NMethodSweeper::peak_sweep_time());
573 event.commit();
574 }
575
576 TRACE_REQUEST_FUNC(CodeSweeperConfiguration) {
577 EventCodeSweeperConfiguration event;
578 event.set_sweeperEnabled(MethodFlushing);
579 event.set_flushingEnabled(UseCodeCacheFlushing);
580 event.commit();
581 }
582
583 #if INCLUDE_SHENANDOAHGC
584 TRACE_REQUEST_FUNC(ShenandoahHeapRegionInformation) {
585 if (UseShenandoahGC) {
586 VM_ShenandoahSendHeapRegionInfoEvents op;
587 VMThread::execute(&op);
588 }
589 }
590 #endif