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