1 /*
2 * Copyright (c) 2003, 2015, 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 "classfile/systemDictionary.hpp"
27 #include "compiler/compileBroker.hpp"
28 #include "memory/iterator.hpp"
29 #include "memory/oopFactory.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "oops/klass.hpp"
32 #include "oops/objArrayKlass.hpp"
33 #include "oops/objArrayOop.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "runtime/arguments.hpp"
36 #include "runtime/globals.hpp"
37 #include "runtime/handles.inline.hpp"
38 #include "runtime/interfaceSupport.hpp"
39 #include "runtime/javaCalls.hpp"
40 #include "runtime/jniHandles.hpp"
41 #include "runtime/os.hpp"
42 #include "runtime/serviceThread.hpp"
43 #include "runtime/thread.inline.hpp"
44 #include "services/classLoadingService.hpp"
45 #include "services/diagnosticCommand.hpp"
46 #include "services/diagnosticFramework.hpp"
47 #include "services/writeableFlags.hpp"
48 #include "services/heapDumper.hpp"
49 #include "services/jmm.h"
50 #include "services/lowMemoryDetector.hpp"
51 #include "services/gcNotifier.hpp"
52 #include "services/nmtDCmd.hpp"
53 #include "services/management.hpp"
54 #include "services/memoryManager.hpp"
55 #include "services/memoryPool.hpp"
56 #include "services/memoryService.hpp"
57 #include "services/runtimeService.hpp"
58 #include "services/threadService.hpp"
59 #include "utilities/macros.hpp"
60
61 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
62
63 PerfVariable* Management::_begin_vm_creation_time = NULL;
64 PerfVariable* Management::_end_vm_creation_time = NULL;
65 PerfVariable* Management::_vm_init_done_time = NULL;
66
67 Klass* Management::_sensor_klass = NULL;
68 Klass* Management::_threadInfo_klass = NULL;
69 Klass* Management::_memoryUsage_klass = NULL;
70 Klass* Management::_memoryPoolMXBean_klass = NULL;
71 Klass* Management::_memoryManagerMXBean_klass = NULL;
72 Klass* Management::_garbageCollectorMXBean_klass = NULL;
73 Klass* Management::_managementFactory_klass = NULL;
74 Klass* Management::_garbageCollectorImpl_klass = NULL;
75 Klass* Management::_gcInfo_klass = NULL;
76 Klass* Management::_diagnosticCommandImpl_klass = NULL;
77 Klass* Management::_managementFactoryHelper_klass = NULL;
78
79
80 jmmOptionalSupport Management::_optional_support = {0};
81 TimeStamp Management::_stamp;
82
83 void management_init() {
84 #if INCLUDE_MANAGEMENT
85 Management::init();
86 ThreadService::init();
87 RuntimeService::init();
88 ClassLoadingService::init();
89 #else
90 ThreadService::init();
91 // Make sure the VM version is initialized
92 // This is normally called by RuntimeService::init().
93 // Since that is conditionalized out, we need to call it here.
94 Abstract_VM_Version::initialize();
95 #endif // INCLUDE_MANAGEMENT
96 }
97
98 #if INCLUDE_MANAGEMENT
99
100 void Management::init() {
101 EXCEPTION_MARK;
102
103 // These counters are for java.lang.management API support.
104 // They are created even if -XX:-UsePerfData is set and in
105 // that case, they will be allocated on C heap.
106
107 _begin_vm_creation_time =
108 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime",
109 PerfData::U_None, CHECK);
110
111 _end_vm_creation_time =
112 PerfDataManager::create_variable(SUN_RT, "createVmEndTime",
113 PerfData::U_None, CHECK);
114
115 _vm_init_done_time =
116 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime",
117 PerfData::U_None, CHECK);
118
119 // Initialize optional support
120 _optional_support.isLowMemoryDetectionSupported = 1;
121 _optional_support.isCompilationTimeMonitoringSupported = 1;
122 _optional_support.isThreadContentionMonitoringSupported = 1;
123
124 if (os::is_thread_cpu_time_supported()) {
125 _optional_support.isCurrentThreadCpuTimeSupported = 1;
126 _optional_support.isOtherThreadCpuTimeSupported = 1;
127 } else {
128 _optional_support.isCurrentThreadCpuTimeSupported = 0;
129 _optional_support.isOtherThreadCpuTimeSupported = 0;
130 }
131
132 _optional_support.isBootClassPathSupported = 1;
133 _optional_support.isObjectMonitorUsageSupported = 1;
134 #if INCLUDE_SERVICES
135 // This depends on the heap inspector
136 _optional_support.isSynchronizerUsageSupported = 1;
137 #endif // INCLUDE_SERVICES
138 _optional_support.isThreadAllocatedMemorySupported = 1;
139 _optional_support.isRemoteDiagnosticCommandsSupported = 1;
140
141 // Registration of the diagnostic commands
142 DCmdRegistrant::register_dcmds();
143 DCmdRegistrant::register_dcmds_ext();
144 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
145 | DCmd_Source_MBean;
146 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(full_export, true, false));
147 }
148
149 void Management::initialize(TRAPS) {
150 // Start the service thread
151 ServiceThread::initialize();
152
153 if (ManagementServer) {
154 ResourceMark rm(THREAD);
155 HandleMark hm(THREAD);
156
157 // Load and initialize the sun.management.Agent class
158 // invoke startAgent method to start the management server
159 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
160 Klass* k = SystemDictionary::resolve_or_null(vmSymbols::sun_management_Agent(),
161 loader,
162 Handle(),
163 THREAD);
164 if (k == NULL) {
165 vm_exit_during_initialization("Management agent initialization failure: "
166 "class sun.management.Agent not found.");
167 }
168 instanceKlassHandle ik (THREAD, k);
169
170 JavaValue result(T_VOID);
171 JavaCalls::call_static(&result,
172 ik,
173 vmSymbols::startAgent_name(),
174 vmSymbols::void_method_signature(),
175 CHECK);
176 }
177 }
178
179 void Management::get_optional_support(jmmOptionalSupport* support) {
180 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport));
181 }
182
183 Klass* Management::load_and_initialize_klass(Symbol* sh, TRAPS) {
184 Klass* k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL);
185 instanceKlassHandle ik (THREAD, k);
186 if (ik->should_be_initialized()) {
187 ik->initialize(CHECK_NULL);
188 }
189 // If these classes change to not be owned by the boot loader, they need
190 // to be walked to keep their class loader alive in oops_do.
191 assert(ik->class_loader() == NULL, "need to follow in oops_do");
192 return ik();
193 }
194
195 void Management::record_vm_startup_time(jlong begin, jlong duration) {
196 // if the performance counter is not initialized,
197 // then vm initialization failed; simply return.
198 if (_begin_vm_creation_time == NULL) return;
199
200 _begin_vm_creation_time->set_value(begin);
201 _end_vm_creation_time->set_value(begin + duration);
202 PerfMemory::set_accessible(true);
203 }
204
205 jlong Management::timestamp() {
206 TimeStamp t;
207 t.update();
208 return t.ticks() - _stamp.ticks();
209 }
210
211 void Management::oops_do(OopClosure* f) {
212 MemoryService::oops_do(f);
213 ThreadService::oops_do(f);
214 }
215
216 Klass* Management::java_lang_management_ThreadInfo_klass(TRAPS) {
217 if (_threadInfo_klass == NULL) {
218 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL);
219 }
220 return _threadInfo_klass;
221 }
222
223 Klass* Management::java_lang_management_MemoryUsage_klass(TRAPS) {
224 if (_memoryUsage_klass == NULL) {
225 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL);
226 }
227 return _memoryUsage_klass;
228 }
229
230 Klass* Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) {
231 if (_memoryPoolMXBean_klass == NULL) {
232 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL);
233 }
234 return _memoryPoolMXBean_klass;
235 }
236
237 Klass* Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) {
238 if (_memoryManagerMXBean_klass == NULL) {
239 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL);
240 }
241 return _memoryManagerMXBean_klass;
242 }
243
244 Klass* Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) {
245 if (_garbageCollectorMXBean_klass == NULL) {
246 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL);
247 }
248 return _garbageCollectorMXBean_klass;
249 }
250
251 Klass* Management::sun_management_Sensor_klass(TRAPS) {
252 if (_sensor_klass == NULL) {
253 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL);
254 }
255 return _sensor_klass;
256 }
257
258 Klass* Management::sun_management_ManagementFactory_klass(TRAPS) {
259 if (_managementFactory_klass == NULL) {
260 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL);
261 }
262 return _managementFactory_klass;
263 }
264
265 Klass* Management::sun_management_GarbageCollectorImpl_klass(TRAPS) {
266 if (_garbageCollectorImpl_klass == NULL) {
267 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL);
268 }
269 return _garbageCollectorImpl_klass;
270 }
271
272 Klass* Management::com_sun_management_GcInfo_klass(TRAPS) {
273 if (_gcInfo_klass == NULL) {
274 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL);
275 }
276 return _gcInfo_klass;
277 }
278
279 Klass* Management::sun_management_DiagnosticCommandImpl_klass(TRAPS) {
280 if (_diagnosticCommandImpl_klass == NULL) {
281 _diagnosticCommandImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_DiagnosticCommandImpl(), CHECK_NULL);
282 }
283 return _diagnosticCommandImpl_klass;
284 }
285
286 Klass* Management::sun_management_ManagementFactoryHelper_klass(TRAPS) {
287 if (_managementFactoryHelper_klass == NULL) {
288 _managementFactoryHelper_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactoryHelper(), CHECK_NULL);
289 }
290 return _managementFactoryHelper_klass;
291 }
292
293 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) {
294 Handle snapshot_thread(THREAD, snapshot->threadObj());
295
296 jlong contended_time;
297 jlong waited_time;
298 if (ThreadService::is_thread_monitoring_contention()) {
299 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks());
300 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks());
301 } else {
302 // set them to -1 if thread contention monitoring is disabled.
303 contended_time = max_julong;
304 waited_time = max_julong;
305 }
306
307 int thread_status = snapshot->thread_status();
308 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object");
309 if (snapshot->is_ext_suspended()) {
310 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED;
311 }
312 if (snapshot->is_in_native()) {
313 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE;
314 }
315
316 ThreadStackTrace* st = snapshot->get_stack_trace();
317 Handle stacktrace_h;
318 if (st != NULL) {
319 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK);
320 } else {
321 stacktrace_h = Handle();
322 }
323
324 args->push_oop(snapshot_thread);
325 args->push_int(thread_status);
326 args->push_oop(Handle(THREAD, snapshot->blocker_object()));
327 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner()));
328 args->push_long(snapshot->contended_enter_count());
329 args->push_long(contended_time);
330 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count());
331 args->push_long(waited_time);
332 args->push_oop(stacktrace_h);
333 }
334
335 // Helper function to construct a ThreadInfo object
336 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) {
337 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL);
338 instanceKlassHandle ik (THREAD, k);
339
340 JavaValue result(T_VOID);
341 JavaCallArguments args(14);
342
343 // First allocate a ThreadObj object and
344 // push the receiver as the first argument
345 Handle element = ik->allocate_instance_handle(CHECK_NULL);
346 args.push_oop(element);
347
348 // initialize the arguments for the ThreadInfo constructor
349 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL);
350
351 // Call ThreadInfo constructor with no locked monitors and synchronizers
352 JavaCalls::call_special(&result,
353 ik,
354 vmSymbols::object_initializer_name(),
355 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(),
356 &args,
357 CHECK_NULL);
358
359 return (instanceOop) element();
360 }
361
362 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot,
363 objArrayHandle monitors_array,
364 typeArrayHandle depths_array,
365 objArrayHandle synchronizers_array,
366 TRAPS) {
367 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL);
368 instanceKlassHandle ik (THREAD, k);
369
370 JavaValue result(T_VOID);
371 JavaCallArguments args(17);
372
373 // First allocate a ThreadObj object and
374 // push the receiver as the first argument
375 Handle element = ik->allocate_instance_handle(CHECK_NULL);
376 args.push_oop(element);
377
378 // initialize the arguments for the ThreadInfo constructor
379 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL);
380
381 // push the locked monitors and synchronizers in the arguments
382 args.push_oop(monitors_array);
383 args.push_oop(depths_array);
384 args.push_oop(synchronizers_array);
385
386 // Call ThreadInfo constructor with locked monitors and synchronizers
387 JavaCalls::call_special(&result,
388 ik,
389 vmSymbols::object_initializer_name(),
390 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(),
391 &args,
392 CHECK_NULL);
393
394 return (instanceOop) element();
395 }
396
397
398 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) {
399 if (mgr == NULL) {
400 THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
401 }
402 oop mgr_obj = JNIHandles::resolve(mgr);
403 instanceHandle h(THREAD, (instanceOop) mgr_obj);
404
405 Klass* k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL);
406 if (!h->is_a(k)) {
407 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
408 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class",
409 NULL);
410 }
411
412 MemoryManager* gc = MemoryService::get_memory_manager(h);
413 if (gc == NULL || !gc->is_gc_memory_manager()) {
414 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
415 "Invalid GC memory manager",
416 NULL);
417 }
418 return (GCMemoryManager*) gc;
419 }
420
421 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) {
422 if (obj == NULL) {
423 THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
424 }
425
426 oop pool_obj = JNIHandles::resolve(obj);
427 assert(pool_obj->is_instance(), "Should be an instanceOop");
428 instanceHandle ph(THREAD, (instanceOop) pool_obj);
429
430 return MemoryService::get_memory_pool(ph);
431 }
432
433 #endif // INCLUDE_MANAGEMENT
434
435 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) {
436 int num_threads = ids_ah->length();
437
438 // Validate input thread IDs
439 int i = 0;
440 for (i = 0; i < num_threads; i++) {
441 jlong tid = ids_ah->long_at(i);
442 if (tid <= 0) {
443 // throw exception if invalid thread id.
444 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
445 "Invalid thread ID entry");
446 }
447 }
448 }
449
450 #if INCLUDE_MANAGEMENT
451
452 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) {
453 // check if the element of infoArray is of type ThreadInfo class
454 Klass* threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK);
455 Klass* element_klass = ObjArrayKlass::cast(infoArray_h->klass())->element_klass();
456 if (element_klass != threadinfo_klass) {
457 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
458 "infoArray element type is not ThreadInfo class");
459 }
460 }
461
462
463 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) {
464 if (obj == NULL) {
465 THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
466 }
467
468 oop mgr_obj = JNIHandles::resolve(obj);
469 assert(mgr_obj->is_instance(), "Should be an instanceOop");
470 instanceHandle mh(THREAD, (instanceOop) mgr_obj);
471
472 return MemoryService::get_memory_manager(mh);
473 }
474
475 // Returns a version string and sets major and minor version if
476 // the input parameters are non-null.
477 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env))
478 return JMM_VERSION;
479 JVM_END
480
481 // Gets the list of VM monitoring and management optional supports
482 // Returns 0 if succeeded; otherwise returns non-zero.
483 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support))
484 if (support == NULL) {
485 return -1;
486 }
487 Management::get_optional_support(support);
488 return 0;
489 JVM_END
490
491 // Returns a java.lang.String object containing the input arguments to the VM.
492 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env))
493 ResourceMark rm(THREAD);
494
495 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) {
496 return NULL;
497 }
498
499 char** vm_flags = Arguments::jvm_flags_array();
500 char** vm_args = Arguments::jvm_args_array();
501 int num_flags = Arguments::num_jvm_flags();
502 int num_args = Arguments::num_jvm_args();
503
504 size_t length = 1; // null terminator
505 int i;
506 for (i = 0; i < num_flags; i++) {
507 length += strlen(vm_flags[i]);
508 }
509 for (i = 0; i < num_args; i++) {
510 length += strlen(vm_args[i]);
511 }
512 // add a space between each argument
513 length += num_flags + num_args - 1;
514
515 // Return the list of input arguments passed to the VM
516 // and preserve the order that the VM processes.
517 char* args = NEW_RESOURCE_ARRAY(char, length);
518 args[0] = '\0';
519 // concatenate all jvm_flags
520 if (num_flags > 0) {
521 strcat(args, vm_flags[0]);
522 for (i = 1; i < num_flags; i++) {
523 strcat(args, " ");
524 strcat(args, vm_flags[i]);
525 }
526 }
527
528 if (num_args > 0 && num_flags > 0) {
529 // append a space if args already contains one or more jvm_flags
530 strcat(args, " ");
531 }
532
533 // concatenate all jvm_args
534 if (num_args > 0) {
535 strcat(args, vm_args[0]);
536 for (i = 1; i < num_args; i++) {
537 strcat(args, " ");
538 strcat(args, vm_args[i]);
539 }
540 }
541
542 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL);
543 return JNIHandles::make_local(env, hargs());
544 JVM_END
545
546 // Returns an array of java.lang.String object containing the input arguments to the VM.
547 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env))
548 ResourceMark rm(THREAD);
549
550 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) {
551 return NULL;
552 }
553
554 char** vm_flags = Arguments::jvm_flags_array();
555 char** vm_args = Arguments::jvm_args_array();
556 int num_flags = Arguments::num_jvm_flags();
557 int num_args = Arguments::num_jvm_args();
558
559 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass());
560 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL);
561 objArrayHandle result_h(THREAD, r);
562
563 int index = 0;
564 for (int j = 0; j < num_flags; j++, index++) {
565 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL);
566 result_h->obj_at_put(index, h());
567 }
568 for (int i = 0; i < num_args; i++, index++) {
569 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL);
570 result_h->obj_at_put(index, h());
571 }
572 return (jobjectArray) JNIHandles::make_local(env, result_h());
573 JVM_END
574
575 // Returns an array of java/lang/management/MemoryPoolMXBean object
576 // one for each memory pool if obj == null; otherwise returns
577 // an array of memory pools for a given memory manager if
578 // it is a valid memory manager.
579 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj))
580 ResourceMark rm(THREAD);
581
582 int num_memory_pools;
583 MemoryManager* mgr = NULL;
584 if (obj == NULL) {
585 num_memory_pools = MemoryService::num_memory_pools();
586 } else {
587 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL);
588 if (mgr == NULL) {
589 return NULL;
590 }
591 num_memory_pools = mgr->num_memory_pools();
592 }
593
594 // Allocate the resulting MemoryPoolMXBean[] object
595 Klass* k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL);
596 instanceKlassHandle ik (THREAD, k);
597 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL);
598 objArrayHandle poolArray(THREAD, r);
599
600 if (mgr == NULL) {
601 // Get all memory pools
602 for (int i = 0; i < num_memory_pools; i++) {
603 MemoryPool* pool = MemoryService::get_memory_pool(i);
604 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL);
605 instanceHandle ph(THREAD, p);
606 poolArray->obj_at_put(i, ph());
607 }
608 } else {
609 // Get memory pools managed by a given memory manager
610 for (int i = 0; i < num_memory_pools; i++) {
611 MemoryPool* pool = mgr->get_memory_pool(i);
612 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL);
613 instanceHandle ph(THREAD, p);
614 poolArray->obj_at_put(i, ph());
615 }
616 }
617 return (jobjectArray) JNIHandles::make_local(env, poolArray());
618 JVM_END
619
620 // Returns an array of java/lang/management/MemoryManagerMXBean object
621 // one for each memory manager if obj == null; otherwise returns
622 // an array of memory managers for a given memory pool if
623 // it is a valid memory pool.
624 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj))
625 ResourceMark rm(THREAD);
626
627 int num_mgrs;
628 MemoryPool* pool = NULL;
629 if (obj == NULL) {
630 num_mgrs = MemoryService::num_memory_managers();
631 } else {
632 pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
633 if (pool == NULL) {
634 return NULL;
635 }
636 num_mgrs = pool->num_memory_managers();
637 }
638
639 // Allocate the resulting MemoryManagerMXBean[] object
640 Klass* k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL);
641 instanceKlassHandle ik (THREAD, k);
642 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL);
643 objArrayHandle mgrArray(THREAD, r);
644
645 if (pool == NULL) {
646 // Get all memory managers
647 for (int i = 0; i < num_mgrs; i++) {
648 MemoryManager* mgr = MemoryService::get_memory_manager(i);
649 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL);
650 instanceHandle ph(THREAD, p);
651 mgrArray->obj_at_put(i, ph());
652 }
653 } else {
654 // Get memory managers for a given memory pool
655 for (int i = 0; i < num_mgrs; i++) {
656 MemoryManager* mgr = pool->get_memory_manager(i);
657 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL);
658 instanceHandle ph(THREAD, p);
659 mgrArray->obj_at_put(i, ph());
660 }
661 }
662 return (jobjectArray) JNIHandles::make_local(env, mgrArray());
663 JVM_END
664
665
666 // Returns a java/lang/management/MemoryUsage object containing the memory usage
667 // of a given memory pool.
668 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj))
669 ResourceMark rm(THREAD);
670
671 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
672 if (pool != NULL) {
673 MemoryUsage usage = pool->get_memory_usage();
674 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
675 return JNIHandles::make_local(env, h());
676 } else {
677 return NULL;
678 }
679 JVM_END
680
681 // Returns a java/lang/management/MemoryUsage object containing the memory usage
682 // of a given memory pool.
683 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj))
684 ResourceMark rm(THREAD);
685
686 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
687 if (pool != NULL) {
688 MemoryUsage usage = pool->get_peak_memory_usage();
689 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
690 return JNIHandles::make_local(env, h());
691 } else {
692 return NULL;
693 }
694 JVM_END
695
696 // Returns a java/lang/management/MemoryUsage object containing the memory usage
697 // of a given memory pool after most recent GC.
698 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj))
699 ResourceMark rm(THREAD);
700
701 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
702 if (pool != NULL && pool->is_collected_pool()) {
703 MemoryUsage usage = pool->get_last_collection_usage();
704 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
705 return JNIHandles::make_local(env, h());
706 } else {
707 return NULL;
708 }
709 JVM_END
710
711 // Sets the memory pool sensor for a threshold type
712 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj))
713 if (obj == NULL || sensorObj == NULL) {
714 THROW(vmSymbols::java_lang_NullPointerException());
715 }
716
717 Klass* sensor_klass = Management::sun_management_Sensor_klass(CHECK);
718 oop s = JNIHandles::resolve(sensorObj);
719 assert(s->is_instance(), "Sensor should be an instanceOop");
720 instanceHandle sensor_h(THREAD, (instanceOop) s);
721 if (!sensor_h->is_a(sensor_klass)) {
722 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
723 "Sensor is not an instance of sun.management.Sensor class");
724 }
725
726 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK);
727 assert(mpool != NULL, "MemoryPool should exist");
728
729 switch (type) {
730 case JMM_USAGE_THRESHOLD_HIGH:
731 case JMM_USAGE_THRESHOLD_LOW:
732 // have only one sensor for threshold high and low
733 mpool->set_usage_sensor_obj(sensor_h);
734 break;
735 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH:
736 case JMM_COLLECTION_USAGE_THRESHOLD_LOW:
737 // have only one sensor for threshold high and low
738 mpool->set_gc_usage_sensor_obj(sensor_h);
739 break;
740 default:
741 assert(false, "Unrecognized type");
742 }
743
744 JVM_END
745
746
747 // Sets the threshold of a given memory pool.
748 // Returns the previous threshold.
749 //
750 // Input parameters:
751 // pool - the MemoryPoolMXBean object
752 // type - threshold type
753 // threshold - the new threshold (must not be negative)
754 //
755 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold))
756 if (threshold < 0) {
757 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
758 "Invalid threshold value",
759 -1);
760 }
761
762 if ((size_t)threshold > max_uintx) {
763 stringStream st;
764 st.print("Invalid valid threshold value. Threshold value (" UINT64_FORMAT ") > max value of size_t (" SIZE_FORMAT ")", (size_t)threshold, max_uintx);
765 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1);
766 }
767
768 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L));
769 assert(pool != NULL, "MemoryPool should exist");
770
771 jlong prev = 0;
772 switch (type) {
773 case JMM_USAGE_THRESHOLD_HIGH:
774 if (!pool->usage_threshold()->is_high_threshold_supported()) {
775 return -1;
776 }
777 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold);
778 break;
779
780 case JMM_USAGE_THRESHOLD_LOW:
781 if (!pool->usage_threshold()->is_low_threshold_supported()) {
782 return -1;
783 }
784 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold);
785 break;
786
787 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH:
788 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) {
789 return -1;
790 }
791 // return and the new threshold is effective for the next GC
792 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold);
793
794 case JMM_COLLECTION_USAGE_THRESHOLD_LOW:
795 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) {
796 return -1;
797 }
798 // return and the new threshold is effective for the next GC
799 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold);
800
801 default:
802 assert(false, "Unrecognized type");
803 return -1;
804 }
805
806 // When the threshold is changed, reevaluate if the low memory
807 // detection is enabled.
808 if (prev != threshold) {
809 LowMemoryDetector::recompute_enabled_for_collected_pools();
810 LowMemoryDetector::detect_low_memory(pool);
811 }
812 return prev;
813 JVM_END
814
815 // Returns a java/lang/management/MemoryUsage object representing
816 // the memory usage for the heap or non-heap memory.
817 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap))
818 ResourceMark rm(THREAD);
819
820 // Calculate the memory usage
821 size_t total_init = 0;
822 size_t total_used = 0;
823 size_t total_committed = 0;
824 size_t total_max = 0;
825 bool has_undefined_init_size = false;
826 bool has_undefined_max_size = false;
827
828 for (int i = 0; i < MemoryService::num_memory_pools(); i++) {
829 MemoryPool* pool = MemoryService::get_memory_pool(i);
830 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) {
831 MemoryUsage u = pool->get_memory_usage();
832 total_used += u.used();
833 total_committed += u.committed();
834
835 if (u.init_size() == (size_t)-1) {
836 has_undefined_init_size = true;
837 }
838 if (!has_undefined_init_size) {
839 total_init += u.init_size();
840 }
841
842 if (u.max_size() == (size_t)-1) {
843 has_undefined_max_size = true;
844 }
845 if (!has_undefined_max_size) {
846 total_max += u.max_size();
847 }
848 }
849 }
850
851 // if any one of the memory pool has undefined init_size or max_size,
852 // set it to -1
853 if (has_undefined_init_size) {
854 total_init = (size_t)-1;
855 }
856 if (has_undefined_max_size) {
857 total_max = (size_t)-1;
858 }
859
860 MemoryUsage usage((heap ? InitialHeapSize : total_init),
861 total_used,
862 total_committed,
863 (heap ? Universe::heap()->max_capacity() : total_max));
864
865 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
866 return JNIHandles::make_local(env, obj());
867 JVM_END
868
869 // Returns the boolean value of a given attribute.
870 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att))
871 switch (att) {
872 case JMM_VERBOSE_GC:
873 return MemoryService::get_verbose();
874 case JMM_VERBOSE_CLASS:
875 return ClassLoadingService::get_verbose();
876 case JMM_THREAD_CONTENTION_MONITORING:
877 return ThreadService::is_thread_monitoring_contention();
878 case JMM_THREAD_CPU_TIME:
879 return ThreadService::is_thread_cpu_time_enabled();
880 case JMM_THREAD_ALLOCATED_MEMORY:
881 return ThreadService::is_thread_allocated_memory_enabled();
882 default:
883 assert(0, "Unrecognized attribute");
884 return false;
885 }
886 JVM_END
887
888 // Sets the given boolean attribute and returns the previous value.
889 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag))
890 switch (att) {
891 case JMM_VERBOSE_GC:
892 return MemoryService::set_verbose(flag != 0);
893 case JMM_VERBOSE_CLASS:
894 return ClassLoadingService::set_verbose(flag != 0);
895 case JMM_THREAD_CONTENTION_MONITORING:
896 return ThreadService::set_thread_monitoring_contention(flag != 0);
897 case JMM_THREAD_CPU_TIME:
898 return ThreadService::set_thread_cpu_time_enabled(flag != 0);
899 case JMM_THREAD_ALLOCATED_MEMORY:
900 return ThreadService::set_thread_allocated_memory_enabled(flag != 0);
901 default:
902 assert(0, "Unrecognized attribute");
903 return false;
904 }
905 JVM_END
906
907
908 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) {
909 switch (att) {
910 case JMM_GC_TIME_MS:
911 return mgr->gc_time_ms();
912
913 case JMM_GC_COUNT:
914 return mgr->gc_count();
915
916 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE:
917 // current implementation only has 1 ext attribute
918 return 1;
919
920 default:
921 assert(0, "Unrecognized GC attribute");
922 return -1;
923 }
924 }
925
926 class VmThreadCountClosure: public ThreadClosure {
927 private:
928 int _count;
929 public:
930 VmThreadCountClosure() : _count(0) {};
931 void do_thread(Thread* thread);
932 int count() { return _count; }
933 };
934
935 void VmThreadCountClosure::do_thread(Thread* thread) {
936 // exclude externally visible JavaThreads
937 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) {
938 return;
939 }
940
941 _count++;
942 }
943
944 static jint get_vm_thread_count() {
945 VmThreadCountClosure vmtcc;
946 {
947 MutexLockerEx ml(Threads_lock);
948 Threads::threads_do(&vmtcc);
949 }
950
951 return vmtcc.count();
952 }
953
954 static jint get_num_flags() {
955 // last flag entry is always NULL, so subtract 1
956 int nFlags = (int) Flag::numFlags - 1;
957 int count = 0;
958 for (int i = 0; i < nFlags; i++) {
959 Flag* flag = &Flag::flags[i];
960 // Exclude the locked (diagnostic, experimental) flags
961 if (flag->is_unlocked() || flag->is_unlocker()) {
962 count++;
963 }
964 }
965 return count;
966 }
967
968 static jlong get_long_attribute(jmmLongAttribute att) {
969 switch (att) {
970 case JMM_CLASS_LOADED_COUNT:
971 return ClassLoadingService::loaded_class_count();
972
973 case JMM_CLASS_UNLOADED_COUNT:
974 return ClassLoadingService::unloaded_class_count();
975
976 case JMM_THREAD_TOTAL_COUNT:
977 return ThreadService::get_total_thread_count();
978
979 case JMM_THREAD_LIVE_COUNT:
980 return ThreadService::get_live_thread_count();
981
982 case JMM_THREAD_PEAK_COUNT:
983 return ThreadService::get_peak_thread_count();
984
985 case JMM_THREAD_DAEMON_COUNT:
986 return ThreadService::get_daemon_thread_count();
987
988 case JMM_JVM_INIT_DONE_TIME_MS:
989 return Management::vm_init_done_time();
990
991 case JMM_JVM_UPTIME_MS:
992 return Management::ticks_to_ms(os::elapsed_counter());
993
994 case JMM_COMPILE_TOTAL_TIME_MS:
995 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks());
996
997 case JMM_OS_PROCESS_ID:
998 return os::current_process_id();
999
1000 // Hotspot-specific counters
1001 case JMM_CLASS_LOADED_BYTES:
1002 return ClassLoadingService::loaded_class_bytes();
1003
1004 case JMM_CLASS_UNLOADED_BYTES:
1005 return ClassLoadingService::unloaded_class_bytes();
1006
1007 case JMM_SHARED_CLASS_LOADED_COUNT:
1008 return ClassLoadingService::loaded_shared_class_count();
1009
1010 case JMM_SHARED_CLASS_UNLOADED_COUNT:
1011 return ClassLoadingService::unloaded_shared_class_count();
1012
1013
1014 case JMM_SHARED_CLASS_LOADED_BYTES:
1015 return ClassLoadingService::loaded_shared_class_bytes();
1016
1017 case JMM_SHARED_CLASS_UNLOADED_BYTES:
1018 return ClassLoadingService::unloaded_shared_class_bytes();
1019
1020 case JMM_TOTAL_CLASSLOAD_TIME_MS:
1021 return ClassLoader::classloader_time_ms();
1022
1023 case JMM_VM_GLOBAL_COUNT:
1024 return get_num_flags();
1025
1026 case JMM_SAFEPOINT_COUNT:
1027 return RuntimeService::safepoint_count();
1028
1029 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS:
1030 return RuntimeService::safepoint_sync_time_ms();
1031
1032 case JMM_TOTAL_STOPPED_TIME_MS:
1033 return RuntimeService::safepoint_time_ms();
1034
1035 case JMM_TOTAL_APP_TIME_MS:
1036 return RuntimeService::application_time_ms();
1037
1038 case JMM_VM_THREAD_COUNT:
1039 return get_vm_thread_count();
1040
1041 case JMM_CLASS_INIT_TOTAL_COUNT:
1042 return ClassLoader::class_init_count();
1043
1044 case JMM_CLASS_INIT_TOTAL_TIME_MS:
1045 return ClassLoader::class_init_time_ms();
1046
1047 case JMM_CLASS_VERIFY_TOTAL_TIME_MS:
1048 return ClassLoader::class_verify_time_ms();
1049
1050 case JMM_METHOD_DATA_SIZE_BYTES:
1051 return ClassLoadingService::class_method_data_size();
1052
1053 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES:
1054 return os::physical_memory();
1055
1056 default:
1057 return -1;
1058 }
1059 }
1060
1061
1062 // Returns the long value of a given attribute.
1063 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att))
1064 if (obj == NULL) {
1065 return get_long_attribute(att);
1066 } else {
1067 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L));
1068 if (mgr != NULL) {
1069 return get_gc_attribute(mgr, att);
1070 }
1071 }
1072 return -1;
1073 JVM_END
1074
1075 // Gets the value of all attributes specified in the given array
1076 // and sets the value in the result array.
1077 // Returns the number of attributes found.
1078 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env,
1079 jobject obj,
1080 jmmLongAttribute* atts,
1081 jint count,
1082 jlong* result))
1083
1084 int num_atts = 0;
1085 if (obj == NULL) {
1086 for (int i = 0; i < count; i++) {
1087 result[i] = get_long_attribute(atts[i]);
1088 if (result[i] != -1) {
1089 num_atts++;
1090 }
1091 }
1092 } else {
1093 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0);
1094 for (int i = 0; i < count; i++) {
1095 result[i] = get_gc_attribute(mgr, atts[i]);
1096 if (result[i] != -1) {
1097 num_atts++;
1098 }
1099 }
1100 }
1101 return num_atts;
1102 JVM_END
1103
1104 // Helper function to do thread dump for a specific list of threads
1105 static void do_thread_dump(ThreadDumpResult* dump_result,
1106 typeArrayHandle ids_ah, // array of thread ID (long[])
1107 int num_threads,
1108 int max_depth,
1109 bool with_locked_monitors,
1110 bool with_locked_synchronizers,
1111 TRAPS) {
1112
1113 // First get an array of threadObj handles.
1114 // A JavaThread may terminate before we get the stack trace.
1115 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads);
1116 {
1117 MutexLockerEx ml(Threads_lock);
1118 for (int i = 0; i < num_threads; i++) {
1119 jlong tid = ids_ah->long_at(i);
1120 JavaThread* jt = Threads::find_java_thread_from_java_tid(tid);
1121 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL);
1122 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj);
1123 thread_handle_array->append(threadObj_h);
1124 }
1125 }
1126
1127 // Obtain thread dumps and thread snapshot information
1128 VM_ThreadDump op(dump_result,
1129 thread_handle_array,
1130 num_threads,
1131 max_depth, /* stack depth */
1132 with_locked_monitors,
1133 with_locked_synchronizers);
1134 VMThread::execute(&op);
1135 }
1136
1137 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo
1138 // for the thread ID specified in the corresponding entry in
1139 // the given array of thread IDs; or NULL if the thread does not exist
1140 // or has terminated.
1141 //
1142 // Input parameters:
1143 // ids - array of thread IDs
1144 // maxDepth - the maximum depth of stack traces to be dumped:
1145 // maxDepth == -1 requests to dump entire stack trace.
1146 // maxDepth == 0 requests no stack trace.
1147 // infoArray - array of ThreadInfo objects
1148 //
1149 // QQQ - Why does this method return a value instead of void?
1150 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray))
1151 // Check if threads is null
1152 if (ids == NULL || infoArray == NULL) {
1153 THROW_(vmSymbols::java_lang_NullPointerException(), -1);
1154 }
1155
1156 if (maxDepth < -1) {
1157 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1158 "Invalid maxDepth", -1);
1159 }
1160
1161 ResourceMark rm(THREAD);
1162 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids));
1163 typeArrayHandle ids_ah(THREAD, ta);
1164
1165 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray);
1166 objArrayOop oa = objArrayOop(infoArray_obj);
1167 objArrayHandle infoArray_h(THREAD, oa);
1168
1169 // validate the thread id array
1170 validate_thread_id_array(ids_ah, CHECK_0);
1171
1172 // validate the ThreadInfo[] parameters
1173 validate_thread_info_array(infoArray_h, CHECK_0);
1174
1175 // infoArray must be of the same length as the given array of thread IDs
1176 int num_threads = ids_ah->length();
1177 if (num_threads != infoArray_h->length()) {
1178 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1179 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1);
1180 }
1181
1182 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
1183 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0);
1184
1185 // Must use ThreadDumpResult to store the ThreadSnapshot.
1186 // GC may occur after the thread snapshots are taken but before
1187 // this function returns. The threadObj and other oops kept
1188 // in the ThreadSnapshot are marked and adjusted during GC.
1189 ThreadDumpResult dump_result(num_threads);
1190
1191 if (maxDepth == 0) {
1192 // no stack trace dumped - do not need to stop the world
1193 {
1194 MutexLockerEx ml(Threads_lock);
1195 for (int i = 0; i < num_threads; i++) {
1196 jlong tid = ids_ah->long_at(i);
1197 JavaThread* jt = Threads::find_java_thread_from_java_tid(tid);
1198 ThreadSnapshot* ts;
1199 if (jt == NULL) {
1200 // if the thread does not exist or now it is terminated,
1201 // create dummy snapshot
1202 ts = new ThreadSnapshot();
1203 } else {
1204 ts = new ThreadSnapshot(jt);
1205 }
1206 dump_result.add_thread_snapshot(ts);
1207 }
1208 }
1209 } else {
1210 // obtain thread dump with the specific list of threads with stack trace
1211 do_thread_dump(&dump_result,
1212 ids_ah,
1213 num_threads,
1214 maxDepth,
1215 false, /* no locked monitor */
1216 false, /* no locked synchronizers */
1217 CHECK_0);
1218 }
1219
1220 int num_snapshots = dump_result.num_snapshots();
1221 assert(num_snapshots == num_threads, "Must match the number of thread snapshots");
1222 int index = 0;
1223 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) {
1224 // For each thread, create an java/lang/management/ThreadInfo object
1225 // and fill with the thread information
1226
1227 if (ts->threadObj() == NULL) {
1228 // if the thread does not exist or now it is terminated, set threadinfo to NULL
1229 infoArray_h->obj_at_put(index, NULL);
1230 continue;
1231 }
1232
1233 // Create java.lang.management.ThreadInfo object
1234 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0);
1235 infoArray_h->obj_at_put(index, info_obj);
1236 }
1237 return 0;
1238 JVM_END
1239
1240 // Dump thread info for the specified threads.
1241 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo
1242 // for the thread ID specified in the corresponding entry in
1243 // the given array of thread IDs; or NULL if the thread does not exist
1244 // or has terminated.
1245 //
1246 // Input parameter:
1247 // ids - array of thread IDs; NULL indicates all live threads
1248 // locked_monitors - if true, dump locked object monitors
1249 // locked_synchronizers - if true, dump locked JSR-166 synchronizers
1250 //
1251 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers))
1252 ResourceMark rm(THREAD);
1253
1254 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
1255 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL);
1256
1257 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids));
1258 int num_threads = (ta != NULL ? ta->length() : 0);
1259 typeArrayHandle ids_ah(THREAD, ta);
1260
1261 ThreadDumpResult dump_result(num_threads); // can safepoint
1262
1263 if (ids_ah() != NULL) {
1264
1265 // validate the thread id array
1266 validate_thread_id_array(ids_ah, CHECK_NULL);
1267
1268 // obtain thread dump of a specific list of threads
1269 do_thread_dump(&dump_result,
1270 ids_ah,
1271 num_threads,
1272 -1, /* entire stack */
1273 (locked_monitors ? true : false), /* with locked monitors */
1274 (locked_synchronizers ? true : false), /* with locked synchronizers */
1275 CHECK_NULL);
1276 } else {
1277 // obtain thread dump of all threads
1278 VM_ThreadDump op(&dump_result,
1279 -1, /* entire stack */
1280 (locked_monitors ? true : false), /* with locked monitors */
1281 (locked_synchronizers ? true : false) /* with locked synchronizers */);
1282 VMThread::execute(&op);
1283 }
1284
1285 int num_snapshots = dump_result.num_snapshots();
1286
1287 // create the result ThreadInfo[] object
1288 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL);
1289 instanceKlassHandle ik (THREAD, k);
1290 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL);
1291 objArrayHandle result_h(THREAD, r);
1292
1293 int index = 0;
1294 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) {
1295 if (ts->threadObj() == NULL) {
1296 // if the thread does not exist or now it is terminated, set threadinfo to NULL
1297 result_h->obj_at_put(index, NULL);
1298 continue;
1299 }
1300
1301 ThreadStackTrace* stacktrace = ts->get_stack_trace();
1302 assert(stacktrace != NULL, "Must have a stack trace dumped");
1303
1304 // Create Object[] filled with locked monitors
1305 // Create int[] filled with the stack depth where a monitor was locked
1306 int num_frames = stacktrace->get_stack_depth();
1307 int num_locked_monitors = stacktrace->num_jni_locked_monitors();
1308
1309 // Count the total number of locked monitors
1310 for (int i = 0; i < num_frames; i++) {
1311 StackFrameInfo* frame = stacktrace->stack_frame_at(i);
1312 num_locked_monitors += frame->num_locked_monitors();
1313 }
1314
1315 objArrayHandle monitors_array;
1316 typeArrayHandle depths_array;
1317 objArrayHandle synchronizers_array;
1318
1319 if (locked_monitors) {
1320 // Constructs Object[] and int[] to contain the object monitor and the stack depth
1321 // where the thread locked it
1322 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL);
1323 objArrayHandle mh(THREAD, array);
1324 monitors_array = mh;
1325
1326 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL);
1327 typeArrayHandle dh(THREAD, tarray);
1328 depths_array = dh;
1329
1330 int count = 0;
1331 int j = 0;
1332 for (int depth = 0; depth < num_frames; depth++) {
1333 StackFrameInfo* frame = stacktrace->stack_frame_at(depth);
1334 int len = frame->num_locked_monitors();
1335 GrowableArray<oop>* locked_monitors = frame->locked_monitors();
1336 for (j = 0; j < len; j++) {
1337 oop monitor = locked_monitors->at(j);
1338 assert(monitor != NULL, "must be a Java object");
1339 monitors_array->obj_at_put(count, monitor);
1340 depths_array->int_at_put(count, depth);
1341 count++;
1342 }
1343 }
1344
1345 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors();
1346 for (j = 0; j < jni_locked_monitors->length(); j++) {
1347 oop object = jni_locked_monitors->at(j);
1348 assert(object != NULL, "must be a Java object");
1349 monitors_array->obj_at_put(count, object);
1350 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info
1351 depths_array->int_at_put(count, -1);
1352 count++;
1353 }
1354 assert(count == num_locked_monitors, "number of locked monitors doesn't match");
1355 }
1356
1357 if (locked_synchronizers) {
1358 // Create Object[] filled with locked JSR-166 synchronizers
1359 assert(ts->threadObj() != NULL, "Must be a valid JavaThread");
1360 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks();
1361 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL);
1362 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0);
1363
1364 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL);
1365 objArrayHandle sh(THREAD, array);
1366 synchronizers_array = sh;
1367
1368 for (int k = 0; k < num_locked_synchronizers; k++) {
1369 synchronizers_array->obj_at_put(k, locks->at(k));
1370 }
1371 }
1372
1373 // Create java.lang.management.ThreadInfo object
1374 instanceOop info_obj = Management::create_thread_info_instance(ts,
1375 monitors_array,
1376 depths_array,
1377 synchronizers_array,
1378 CHECK_NULL);
1379 result_h->obj_at_put(index, info_obj);
1380 }
1381
1382 return (jobjectArray) JNIHandles::make_local(env, result_h());
1383 JVM_END
1384
1385 // Returns an array of Class objects.
1386 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env))
1387 ResourceMark rm(THREAD);
1388
1389 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter
1390
1391 int num_classes = lce.num_loaded_classes();
1392 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0);
1393 objArrayHandle classes_ah(THREAD, r);
1394
1395 for (int i = 0; i < num_classes; i++) {
1396 KlassHandle kh = lce.get_klass(i);
1397 oop mirror = kh()->java_mirror();
1398 classes_ah->obj_at_put(i, mirror);
1399 }
1400
1401 return (jobjectArray) JNIHandles::make_local(env, classes_ah());
1402 JVM_END
1403
1404 // Reset statistic. Return true if the requested statistic is reset.
1405 // Otherwise, return false.
1406 //
1407 // Input parameters:
1408 // obj - specify which instance the statistic associated with to be reset
1409 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object.
1410 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID.
1411 // type - the type of statistic to be reset
1412 //
1413 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type))
1414 ResourceMark rm(THREAD);
1415
1416 switch (type) {
1417 case JMM_STAT_PEAK_THREAD_COUNT:
1418 ThreadService::reset_peak_thread_count();
1419 return true;
1420
1421 case JMM_STAT_THREAD_CONTENTION_COUNT:
1422 case JMM_STAT_THREAD_CONTENTION_TIME: {
1423 jlong tid = obj.j;
1424 if (tid < 0) {
1425 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE);
1426 }
1427
1428 // Look for the JavaThread of this given tid
1429 MutexLockerEx ml(Threads_lock);
1430 if (tid == 0) {
1431 // reset contention statistics for all threads if tid == 0
1432 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) {
1433 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) {
1434 ThreadService::reset_contention_count_stat(java_thread);
1435 } else {
1436 ThreadService::reset_contention_time_stat(java_thread);
1437 }
1438 }
1439 } else {
1440 // reset contention statistics for a given thread
1441 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(tid);
1442 if (java_thread == NULL) {
1443 return false;
1444 }
1445
1446 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) {
1447 ThreadService::reset_contention_count_stat(java_thread);
1448 } else {
1449 ThreadService::reset_contention_time_stat(java_thread);
1450 }
1451 }
1452 return true;
1453 break;
1454 }
1455 case JMM_STAT_PEAK_POOL_USAGE: {
1456 jobject o = obj.l;
1457 if (o == NULL) {
1458 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
1459 }
1460
1461 oop pool_obj = JNIHandles::resolve(o);
1462 assert(pool_obj->is_instance(), "Should be an instanceOop");
1463 instanceHandle ph(THREAD, (instanceOop) pool_obj);
1464
1465 MemoryPool* pool = MemoryService::get_memory_pool(ph);
1466 if (pool != NULL) {
1467 pool->reset_peak_memory_usage();
1468 return true;
1469 }
1470 break;
1471 }
1472 case JMM_STAT_GC_STAT: {
1473 jobject o = obj.l;
1474 if (o == NULL) {
1475 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
1476 }
1477
1478 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0);
1479 if (mgr != NULL) {
1480 mgr->reset_gc_stat();
1481 return true;
1482 }
1483 break;
1484 }
1485 default:
1486 assert(0, "Unknown Statistic Type");
1487 }
1488 return false;
1489 JVM_END
1490
1491 // Returns the fast estimate of CPU time consumed by
1492 // a given thread (in nanoseconds).
1493 // If thread_id == 0, return CPU time for the current thread.
1494 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id))
1495 if (!os::is_thread_cpu_time_supported()) {
1496 return -1;
1497 }
1498
1499 if (thread_id < 0) {
1500 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1501 "Invalid thread ID", -1);
1502 }
1503
1504 JavaThread* java_thread = NULL;
1505 if (thread_id == 0) {
1506 // current thread
1507 return os::current_thread_cpu_time();
1508 } else {
1509 MutexLockerEx ml(Threads_lock);
1510 java_thread = Threads::find_java_thread_from_java_tid(thread_id);
1511 if (java_thread != NULL) {
1512 return os::thread_cpu_time((Thread*) java_thread);
1513 }
1514 }
1515 return -1;
1516 JVM_END
1517
1518 // Returns a String array of all VM global flag names
1519 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env))
1520 // last flag entry is always NULL, so subtract 1
1521 int nFlags = (int) Flag::numFlags - 1;
1522 // allocate a temp array
1523 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(),
1524 nFlags, CHECK_0);
1525 objArrayHandle flags_ah(THREAD, r);
1526 int num_entries = 0;
1527 for (int i = 0; i < nFlags; i++) {
1528 Flag* flag = &Flag::flags[i];
1529 // Exclude notproduct and develop flags in product builds.
1530 if (flag->is_constant_in_binary()) {
1531 continue;
1532 }
1533 // Exclude the locked (experimental, diagnostic) flags
1534 if (flag->is_unlocked() || flag->is_unlocker()) {
1535 Handle s = java_lang_String::create_from_str(flag->_name, CHECK_0);
1536 flags_ah->obj_at_put(num_entries, s());
1537 num_entries++;
1538 }
1539 }
1540
1541 if (num_entries < nFlags) {
1542 // Return array of right length
1543 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0);
1544 for(int i = 0; i < num_entries; i++) {
1545 res->obj_at_put(i, flags_ah->obj_at(i));
1546 }
1547 return (jobjectArray)JNIHandles::make_local(env, res);
1548 }
1549
1550 return (jobjectArray)JNIHandles::make_local(env, flags_ah());
1551 JVM_END
1552
1553 // Utility function used by jmm_GetVMGlobals. Returns false if flag type
1554 // can't be determined, true otherwise. If false is returned, then *global
1555 // will be incomplete and invalid.
1556 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) {
1557 Handle flag_name;
1558 if (name() == NULL) {
1559 flag_name = java_lang_String::create_from_str(flag->_name, CHECK_false);
1560 } else {
1561 flag_name = name;
1562 }
1563 global->name = (jstring)JNIHandles::make_local(env, flag_name());
1564
1565 if (flag->is_bool()) {
1566 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE;
1567 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN;
1568 } else if (flag->is_intx()) {
1569 global->value.j = (jlong)flag->get_intx();
1570 global->type = JMM_VMGLOBAL_TYPE_JLONG;
1571 } else if (flag->is_uintx()) {
1572 global->value.j = (jlong)flag->get_uintx();
1573 global->type = JMM_VMGLOBAL_TYPE_JLONG;
1574 } else if (flag->is_uint64_t()) {
1575 global->value.j = (jlong)flag->get_uint64_t();
1576 global->type = JMM_VMGLOBAL_TYPE_JLONG;
1577 } else if (flag->is_double()) {
1578 global->value.d = (jdouble)flag->get_double();
1579 global->type = JMM_VMGLOBAL_TYPE_JDOUBLE;
1580 } else if (flag->is_size_t()) {
1581 global->value.j = (jlong)flag->get_size_t();
1582 global->type = JMM_VMGLOBAL_TYPE_JLONG;
1583 } else if (flag->is_ccstr()) {
1584 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false);
1585 global->value.l = (jobject)JNIHandles::make_local(env, str());
1586 global->type = JMM_VMGLOBAL_TYPE_JSTRING;
1587 } else {
1588 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN;
1589 return false;
1590 }
1591
1592 global->writeable = flag->is_writeable();
1593 global->external = flag->is_external();
1594 switch (flag->get_origin()) {
1595 case Flag::DEFAULT:
1596 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT;
1597 break;
1598 case Flag::COMMAND_LINE:
1599 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE;
1600 break;
1601 case Flag::ENVIRON_VAR:
1602 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR;
1603 break;
1604 case Flag::CONFIG_FILE:
1605 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE;
1606 break;
1607 case Flag::MANAGEMENT:
1608 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT;
1609 break;
1610 case Flag::ERGONOMIC:
1611 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC;
1612 break;
1613 case Flag::ATTACH_ON_DEMAND:
1614 global->origin = JMM_VMGLOBAL_ORIGIN_ATTACH_ON_DEMAND;
1615 break;
1616 default:
1617 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER;
1618 }
1619
1620 return true;
1621 }
1622
1623 // Fill globals array of count length with jmmVMGlobal entries
1624 // specified by names. If names == NULL, fill globals array
1625 // with all Flags. Return value is number of entries
1626 // created in globals.
1627 // If a Flag with a given name in an array element does not
1628 // exist, globals[i].name will be set to NULL.
1629 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env,
1630 jobjectArray names,
1631 jmmVMGlobal *globals,
1632 jint count))
1633
1634
1635 if (globals == NULL) {
1636 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1637 }
1638
1639 ResourceMark rm(THREAD);
1640
1641 if (names != NULL) {
1642 // return the requested globals
1643 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names));
1644 objArrayHandle names_ah(THREAD, ta);
1645 // Make sure we have a String array
1646 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass();
1647 if (element_klass != SystemDictionary::String_klass()) {
1648 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1649 "Array element type is not String class", 0);
1650 }
1651
1652 int names_length = names_ah->length();
1653 int num_entries = 0;
1654 for (int i = 0; i < names_length && i < count; i++) {
1655 oop s = names_ah->obj_at(i);
1656 if (s == NULL) {
1657 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1658 }
1659
1660 Handle sh(THREAD, s);
1661 char* str = java_lang_String::as_utf8_string(s);
1662 Flag* flag = Flag::find_flag(str, strlen(str));
1663 if (flag != NULL &&
1664 add_global_entry(env, sh, &globals[i], flag, THREAD)) {
1665 num_entries++;
1666 } else {
1667 globals[i].name = NULL;
1668 }
1669 }
1670 return num_entries;
1671 } else {
1672 // return all globals if names == NULL
1673
1674 // last flag entry is always NULL, so subtract 1
1675 int nFlags = (int) Flag::numFlags - 1;
1676 Handle null_h;
1677 int num_entries = 0;
1678 for (int i = 0; i < nFlags && num_entries < count; i++) {
1679 Flag* flag = &Flag::flags[i];
1680 // Exclude notproduct and develop flags in product builds.
1681 if (flag->is_constant_in_binary()) {
1682 continue;
1683 }
1684 // Exclude the locked (diagnostic, experimental) flags
1685 if ((flag->is_unlocked() || flag->is_unlocker()) &&
1686 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) {
1687 num_entries++;
1688 }
1689 }
1690 return num_entries;
1691 }
1692 JVM_END
1693
1694 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value))
1695 ResourceMark rm(THREAD);
1696
1697 oop fn = JNIHandles::resolve_external_guard(flag_name);
1698 if (fn == NULL) {
1699 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
1700 "The flag name cannot be null.");
1701 }
1702 char* name = java_lang_String::as_utf8_string(fn);
1703
1704 FormatBuffer<80> err_msg("%s", "");
1705 int succeed = WriteableFlags::set_flag(name, new_value, Flag::MANAGEMENT, err_msg);
1706
1707 if (succeed != WriteableFlags::SUCCESS) {
1708 if (succeed == WriteableFlags::MISSING_VALUE) {
1709 // missing value causes NPE to be thrown
1710 THROW(vmSymbols::java_lang_NullPointerException());
1711 } else {
1712 // all the other errors are reported as IAE with the appropriate error message
1713 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1714 err_msg.buffer());
1715 }
1716 }
1717 assert(succeed == WriteableFlags::SUCCESS, "Setting flag should succeed");
1718 JVM_END
1719
1720 class ThreadTimesClosure: public ThreadClosure {
1721 private:
1722 objArrayHandle _names_strings;
1723 char **_names_chars;
1724 typeArrayHandle _times;
1725 int _names_len;
1726 int _times_len;
1727 int _count;
1728
1729 public:
1730 ThreadTimesClosure(objArrayHandle names, typeArrayHandle times);
1731 ~ThreadTimesClosure();
1732 virtual void do_thread(Thread* thread);
1733 void do_unlocked();
1734 int count() { return _count; }
1735 };
1736
1737 ThreadTimesClosure::ThreadTimesClosure(objArrayHandle names,
1738 typeArrayHandle times) {
1739 assert(names() != NULL, "names was NULL");
1740 assert(times() != NULL, "times was NULL");
1741 _names_strings = names;
1742 _names_len = names->length();
1743 _names_chars = NEW_C_HEAP_ARRAY(char*, _names_len, mtInternal);
1744 _times = times;
1745 _times_len = times->length();
1746 _count = 0;
1747 }
1748
1749 //
1750 // Called with Threads_lock held
1751 //
1752 void ThreadTimesClosure::do_thread(Thread* thread) {
1753 assert(thread != NULL, "thread was NULL");
1754
1755 // exclude externally visible JavaThreads
1756 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) {
1757 return;
1758 }
1759
1760 if (_count >= _names_len || _count >= _times_len) {
1761 // skip if the result array is not big enough
1762 return;
1763 }
1764
1765 EXCEPTION_MARK;
1766 ResourceMark rm(THREAD); // thread->name() uses ResourceArea
1767
1768 assert(thread->name() != NULL, "All threads should have a name");
1769 _names_chars[_count] = os::strdup(thread->name());
1770 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ?
1771 os::thread_cpu_time(thread) : -1);
1772 _count++;
1773 }
1774
1775 // Called without Threads_lock, we can allocate String objects.
1776 void ThreadTimesClosure::do_unlocked() {
1777
1778 EXCEPTION_MARK;
1779 for (int i = 0; i < _count; i++) {
1780 Handle s = java_lang_String::create_from_str(_names_chars[i], CHECK);
1781 _names_strings->obj_at_put(i, s());
1782 }
1783 }
1784
1785 ThreadTimesClosure::~ThreadTimesClosure() {
1786 for (int i = 0; i < _count; i++) {
1787 os::free(_names_chars[i]);
1788 }
1789 FREE_C_HEAP_ARRAY(char *, _names_chars);
1790 }
1791
1792 // Fills names with VM internal thread names and times with the corresponding
1793 // CPU times. If names or times is NULL, a NullPointerException is thrown.
1794 // If the element type of names is not String, an IllegalArgumentException is
1795 // thrown.
1796 // If an array is not large enough to hold all the entries, only the entries
1797 // that fit will be returned. Return value is the number of VM internal
1798 // threads entries.
1799 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env,
1800 jobjectArray names,
1801 jlongArray times))
1802 if (names == NULL || times == NULL) {
1803 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1804 }
1805 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names));
1806 objArrayHandle names_ah(THREAD, na);
1807
1808 // Make sure we have a String array
1809 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass();
1810 if (element_klass != SystemDictionary::String_klass()) {
1811 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1812 "Array element type is not String class", 0);
1813 }
1814
1815 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times));
1816 typeArrayHandle times_ah(THREAD, ta);
1817
1818 ThreadTimesClosure ttc(names_ah, times_ah);
1819 {
1820 MutexLockerEx ml(Threads_lock);
1821 Threads::threads_do(&ttc);
1822 }
1823 ttc.do_unlocked();
1824 return ttc.count();
1825 JVM_END
1826
1827 static Handle find_deadlocks(bool object_monitors_only, TRAPS) {
1828 ResourceMark rm(THREAD);
1829
1830 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */);
1831 VMThread::execute(&op);
1832
1833 DeadlockCycle* deadlocks = op.result();
1834 if (deadlocks == NULL) {
1835 // no deadlock found and return
1836 return Handle();
1837 }
1838
1839 int num_threads = 0;
1840 DeadlockCycle* cycle;
1841 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) {
1842 num_threads += cycle->num_threads();
1843 }
1844
1845 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH);
1846 objArrayHandle threads_ah(THREAD, r);
1847
1848 int index = 0;
1849 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) {
1850 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads();
1851 int len = deadlock_threads->length();
1852 for (int i = 0; i < len; i++) {
1853 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj());
1854 index++;
1855 }
1856 }
1857 return threads_ah;
1858 }
1859
1860 // Finds cycles of threads that are deadlocked involved in object monitors
1861 // and JSR-166 synchronizers.
1862 // Returns an array of Thread objects which are in deadlock, if any.
1863 // Otherwise, returns NULL.
1864 //
1865 // Input parameter:
1866 // object_monitors_only - if true, only check object monitors
1867 //
1868 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only))
1869 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0);
1870 return (jobjectArray) JNIHandles::make_local(env, result());
1871 JVM_END
1872
1873 // Finds cycles of threads that are deadlocked on monitor locks
1874 // Returns an array of Thread objects which are in deadlock, if any.
1875 // Otherwise, returns NULL.
1876 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env))
1877 Handle result = find_deadlocks(true, CHECK_0);
1878 return (jobjectArray) JNIHandles::make_local(env, result());
1879 JVM_END
1880
1881 // Gets the information about GC extension attributes including
1882 // the name of the attribute, its type, and a short description.
1883 //
1884 // Input parameters:
1885 // mgr - GC memory manager
1886 // info - caller allocated array of jmmExtAttributeInfo
1887 // count - number of elements of the info array
1888 //
1889 // Returns the number of GC extension attributes filled in the info array; or
1890 // -1 if info is not big enough
1891 //
1892 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count))
1893 // All GC memory managers have 1 attribute (number of GC threads)
1894 if (count == 0) {
1895 return 0;
1896 }
1897
1898 if (info == NULL) {
1899 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1900 }
1901
1902 info[0].name = "GcThreadCount";
1903 info[0].type = 'I';
1904 info[0].description = "Number of GC threads";
1905 return 1;
1906 JVM_END
1907
1908 // verify the given array is an array of java/lang/management/MemoryUsage objects
1909 // of a given length and return the objArrayOop
1910 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) {
1911 if (array == NULL) {
1912 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1913 }
1914
1915 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array));
1916 objArrayHandle array_h(THREAD, oa);
1917
1918 // array must be of the given length
1919 if (length != array_h->length()) {
1920 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1921 "The length of the given MemoryUsage array does not match the number of memory pools.", 0);
1922 }
1923
1924 // check if the element of array is of type MemoryUsage class
1925 Klass* usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0);
1926 Klass* element_klass = ObjArrayKlass::cast(array_h->klass())->element_klass();
1927 if (element_klass != usage_klass) {
1928 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1929 "The element type is not MemoryUsage class", 0);
1930 }
1931
1932 return array_h();
1933 }
1934
1935 // Gets the statistics of the last GC of a given GC memory manager.
1936 // Input parameters:
1937 // obj - GarbageCollectorMXBean object
1938 // gc_stat - caller allocated jmmGCStat where:
1939 // a. before_gc_usage - array of MemoryUsage objects
1940 // b. after_gc_usage - array of MemoryUsage objects
1941 // c. gc_ext_attributes_values_size is set to the
1942 // gc_ext_attribute_values array allocated
1943 // d. gc_ext_attribute_values is a caller allocated array of jvalue.
1944 //
1945 // On return,
1946 // gc_index == 0 indicates no GC statistics available
1947 //
1948 // before_gc_usage and after_gc_usage - filled with per memory pool
1949 // before and after GC usage in the same order as the memory pools
1950 // returned by GetMemoryPools for a given GC memory manager.
1951 // num_gc_ext_attributes indicates the number of elements in
1952 // the gc_ext_attribute_values array is filled; or
1953 // -1 if the gc_ext_attributes_values array is not big enough
1954 //
1955 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat))
1956 ResourceMark rm(THREAD);
1957
1958 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) {
1959 THROW(vmSymbols::java_lang_NullPointerException());
1960 }
1961
1962 // Get the GCMemoryManager
1963 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK);
1964
1965 // Make a copy of the last GC statistics
1966 // GC may occur while constructing the last GC information
1967 int num_pools = MemoryService::num_memory_pools();
1968 GCStatInfo stat(num_pools);
1969 if (mgr->get_last_gc_stat(&stat) == 0) {
1970 gc_stat->gc_index = 0;
1971 return;
1972 }
1973
1974 gc_stat->gc_index = stat.gc_index();
1975 gc_stat->start_time = Management::ticks_to_ms(stat.start_time());
1976 gc_stat->end_time = Management::ticks_to_ms(stat.end_time());
1977
1978 // Current implementation does not have GC extension attributes
1979 gc_stat->num_gc_ext_attributes = 0;
1980
1981 // Fill the arrays of MemoryUsage objects with before and after GC
1982 // per pool memory usage
1983 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc,
1984 num_pools,
1985 CHECK);
1986 objArrayHandle usage_before_gc_ah(THREAD, bu);
1987
1988 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc,
1989 num_pools,
1990 CHECK);
1991 objArrayHandle usage_after_gc_ah(THREAD, au);
1992
1993 for (int i = 0; i < num_pools; i++) {
1994 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK);
1995 Handle after_usage;
1996
1997 MemoryUsage u = stat.after_gc_usage_for_pool(i);
1998 if (u.max_size() == 0 && u.used() > 0) {
1999 // If max size == 0, this pool is a survivor space.
2000 // Set max size = -1 since the pools will be swapped after GC.
2001 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1);
2002 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK);
2003 } else {
2004 after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK);
2005 }
2006 usage_before_gc_ah->obj_at_put(i, before_usage());
2007 usage_after_gc_ah->obj_at_put(i, after_usage());
2008 }
2009
2010 if (gc_stat->gc_ext_attribute_values_size > 0) {
2011 // Current implementation only has 1 attribute (number of GC threads)
2012 // The type is 'I'
2013 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads();
2014 }
2015 JVM_END
2016
2017 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled))
2018 ResourceMark rm(THREAD);
2019 // Get the GCMemoryManager
2020 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK);
2021 mgr->set_notification_enabled(enabled?true:false);
2022 JVM_END
2023
2024 // Dump heap - Returns 0 if succeeds.
2025 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live))
2026 #if INCLUDE_SERVICES
2027 ResourceMark rm(THREAD);
2028 oop on = JNIHandles::resolve_external_guard(outputfile);
2029 if (on == NULL) {
2030 THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
2031 "Output file name cannot be null.", -1);
2032 }
2033 char* name = java_lang_String::as_platform_dependent_str(on, CHECK_(-1));
2034 if (name == NULL) {
2035 THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
2036 "Output file name cannot be null.", -1);
2037 }
2038 HeapDumper dumper(live ? true : false);
2039 if (dumper.dump(name) != 0) {
2040 const char* errmsg = dumper.error_as_C_string();
2041 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1);
2042 }
2043 return 0;
2044 #else // INCLUDE_SERVICES
2045 return -1;
2046 #endif // INCLUDE_SERVICES
2047 JVM_END
2048
2049 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env))
2050 ResourceMark rm(THREAD);
2051 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(DCmd_Source_MBean);
2052 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(),
2053 dcmd_list->length(), CHECK_NULL);
2054 objArrayHandle cmd_array(THREAD, cmd_array_oop);
2055 for (int i = 0; i < dcmd_list->length(); i++) {
2056 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL);
2057 cmd_array->obj_at_put(i, cmd_name);
2058 }
2059 return (jobjectArray) JNIHandles::make_local(env, cmd_array());
2060 JVM_END
2061
2062 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds,
2063 dcmdInfo* infoArray))
2064 if (cmds == NULL || infoArray == NULL) {
2065 THROW(vmSymbols::java_lang_NullPointerException());
2066 }
2067
2068 ResourceMark rm(THREAD);
2069
2070 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds));
2071 objArrayHandle cmds_ah(THREAD, ca);
2072
2073 // Make sure we have a String array
2074 Klass* element_klass = ObjArrayKlass::cast(cmds_ah->klass())->element_klass();
2075 if (element_klass != SystemDictionary::String_klass()) {
2076 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2077 "Array element type is not String class");
2078 }
2079
2080 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(DCmd_Source_MBean);
2081
2082 int num_cmds = cmds_ah->length();
2083 for (int i = 0; i < num_cmds; i++) {
2084 oop cmd = cmds_ah->obj_at(i);
2085 if (cmd == NULL) {
2086 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2087 "Command name cannot be null.");
2088 }
2089 char* cmd_name = java_lang_String::as_utf8_string(cmd);
2090 if (cmd_name == NULL) {
2091 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2092 "Command name cannot be null.");
2093 }
2094 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name);
2095 if (pos == -1) {
2096 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2097 "Unknown diagnostic command");
2098 }
2099 DCmdInfo* info = info_list->at(pos);
2100 infoArray[i].name = info->name();
2101 infoArray[i].description = info->description();
2102 infoArray[i].impact = info->impact();
2103 JavaPermission p = info->permission();
2104 infoArray[i].permission_class = p._class;
2105 infoArray[i].permission_name = p._name;
2106 infoArray[i].permission_action = p._action;
2107 infoArray[i].num_arguments = info->num_arguments();
2108 infoArray[i].enabled = info->is_enabled();
2109 }
2110 JVM_END
2111
2112 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env,
2113 jstring command, dcmdArgInfo* infoArray))
2114 ResourceMark rm(THREAD);
2115 oop cmd = JNIHandles::resolve_external_guard(command);
2116 if (cmd == NULL) {
2117 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2118 "Command line cannot be null.");
2119 }
2120 char* cmd_name = java_lang_String::as_utf8_string(cmd);
2121 if (cmd_name == NULL) {
2122 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2123 "Command line content cannot be null.");
2124 }
2125 DCmd* dcmd = NULL;
2126 DCmdFactory*factory = DCmdFactory::factory(DCmd_Source_MBean, cmd_name,
2127 strlen(cmd_name));
2128 if (factory != NULL) {
2129 dcmd = factory->create_resource_instance(NULL);
2130 }
2131 if (dcmd == NULL) {
2132 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2133 "Unknown diagnostic command");
2134 }
2135 DCmdMark mark(dcmd);
2136 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array();
2137 if (array->length() == 0) {
2138 return;
2139 }
2140 for (int i = 0; i < array->length(); i++) {
2141 infoArray[i].name = array->at(i)->name();
2142 infoArray[i].description = array->at(i)->description();
2143 infoArray[i].type = array->at(i)->type();
2144 infoArray[i].default_string = array->at(i)->default_string();
2145 infoArray[i].mandatory = array->at(i)->is_mandatory();
2146 infoArray[i].option = array->at(i)->is_option();
2147 infoArray[i].multiple = array->at(i)->is_multiple();
2148 infoArray[i].position = array->at(i)->position();
2149 }
2150 return;
2151 JVM_END
2152
2153 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline))
2154 ResourceMark rm(THREAD);
2155 oop cmd = JNIHandles::resolve_external_guard(commandline);
2156 if (cmd == NULL) {
2157 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
2158 "Command line cannot be null.");
2159 }
2160 char* cmdline = java_lang_String::as_utf8_string(cmd);
2161 if (cmdline == NULL) {
2162 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
2163 "Command line content cannot be null.");
2164 }
2165 bufferedStream output;
2166 DCmd::parse_and_execute(DCmd_Source_MBean, &output, cmdline, ' ', CHECK_NULL);
2167 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL);
2168 return (jstring) JNIHandles::make_local(env, result);
2169 JVM_END
2170
2171 JVM_ENTRY(void, jmm_SetDiagnosticFrameworkNotificationEnabled(JNIEnv *env, jboolean enabled))
2172 DCmdFactory::set_jmx_notification_enabled(enabled?true:false);
2173 JVM_END
2174
2175 jlong Management::ticks_to_ms(jlong ticks) {
2176 assert(os::elapsed_frequency() > 0, "Must be non-zero");
2177 return (jlong)(((double)ticks / (double)os::elapsed_frequency())
2178 * (double)1000.0);
2179 }
2180 #endif // INCLUDE_MANAGEMENT
2181
2182 // Gets an array containing the amount of memory allocated on the Java
2183 // heap for a set of threads (in bytes). Each element of the array is
2184 // the amount of memory allocated for the thread ID specified in the
2185 // corresponding entry in the given array of thread IDs; or -1 if the
2186 // thread does not exist or has terminated.
2187 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids,
2188 jlongArray sizeArray))
2189 // Check if threads is null
2190 if (ids == NULL || sizeArray == NULL) {
2191 THROW(vmSymbols::java_lang_NullPointerException());
2192 }
2193
2194 ResourceMark rm(THREAD);
2195 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids));
2196 typeArrayHandle ids_ah(THREAD, ta);
2197
2198 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray));
2199 typeArrayHandle sizeArray_h(THREAD, sa);
2200
2201 // validate the thread id array
2202 validate_thread_id_array(ids_ah, CHECK);
2203
2204 // sizeArray must be of the same length as the given array of thread IDs
2205 int num_threads = ids_ah->length();
2206 if (num_threads != sizeArray_h->length()) {
2207 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2208 "The length of the given long array does not match the length of "
2209 "the given array of thread IDs");
2210 }
2211
2212 MutexLockerEx ml(Threads_lock);
2213 for (int i = 0; i < num_threads; i++) {
2214 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(ids_ah->long_at(i));
2215 if (java_thread != NULL) {
2216 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes());
2217 }
2218 }
2219 JVM_END
2220
2221 // Returns the CPU time consumed by a given thread (in nanoseconds).
2222 // If thread_id == 0, CPU time for the current thread is returned.
2223 // If user_sys_cpu_time = true, user level and system CPU time of
2224 // a given thread is returned; otherwise, only user level CPU time
2225 // is returned.
2226 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time))
2227 if (!os::is_thread_cpu_time_supported()) {
2228 return -1;
2229 }
2230
2231 if (thread_id < 0) {
2232 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
2233 "Invalid thread ID", -1);
2234 }
2235
2236 JavaThread* java_thread = NULL;
2237 if (thread_id == 0) {
2238 // current thread
2239 return os::current_thread_cpu_time(user_sys_cpu_time != 0);
2240 } else {
2241 MutexLockerEx ml(Threads_lock);
2242 java_thread = Threads::find_java_thread_from_java_tid(thread_id);
2243 if (java_thread != NULL) {
2244 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0);
2245 }
2246 }
2247 return -1;
2248 JVM_END
2249
2250 // Gets an array containing the CPU times consumed by a set of threads
2251 // (in nanoseconds). Each element of the array is the CPU time for the
2252 // thread ID specified in the corresponding entry in the given array
2253 // of thread IDs; or -1 if the thread does not exist or has terminated.
2254 // If user_sys_cpu_time = true, the sum of user level and system CPU time
2255 // for the given thread is returned; otherwise, only user level CPU time
2256 // is returned.
2257 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids,
2258 jlongArray timeArray,
2259 jboolean user_sys_cpu_time))
2260 // Check if threads is null
2261 if (ids == NULL || timeArray == NULL) {
2262 THROW(vmSymbols::java_lang_NullPointerException());
2263 }
2264
2265 ResourceMark rm(THREAD);
2266 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids));
2267 typeArrayHandle ids_ah(THREAD, ta);
2268
2269 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray));
2270 typeArrayHandle timeArray_h(THREAD, tia);
2271
2272 // validate the thread id array
2273 validate_thread_id_array(ids_ah, CHECK);
2274
2275 // timeArray must be of the same length as the given array of thread IDs
2276 int num_threads = ids_ah->length();
2277 if (num_threads != timeArray_h->length()) {
2278 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2279 "The length of the given long array does not match the length of "
2280 "the given array of thread IDs");
2281 }
2282
2283 MutexLockerEx ml(Threads_lock);
2284 for (int i = 0; i < num_threads; i++) {
2285 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(ids_ah->long_at(i));
2286 if (java_thread != NULL) {
2287 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread,
2288 user_sys_cpu_time != 0));
2289 }
2290 }
2291 JVM_END
2292
2293
2294
2295 #if INCLUDE_MANAGEMENT
2296 const struct jmmInterface_1_ jmm_interface = {
2297 NULL,
2298 NULL,
2299 jmm_GetVersion,
2300 jmm_GetOptionalSupport,
2301 jmm_GetInputArguments,
2302 jmm_GetThreadInfo,
2303 jmm_GetInputArgumentArray,
2304 jmm_GetMemoryPools,
2305 jmm_GetMemoryManagers,
2306 jmm_GetMemoryPoolUsage,
2307 jmm_GetPeakMemoryPoolUsage,
2308 jmm_GetThreadAllocatedMemory,
2309 jmm_GetMemoryUsage,
2310 jmm_GetLongAttribute,
2311 jmm_GetBoolAttribute,
2312 jmm_SetBoolAttribute,
2313 jmm_GetLongAttributes,
2314 jmm_FindMonitorDeadlockedThreads,
2315 jmm_GetThreadCpuTime,
2316 jmm_GetVMGlobalNames,
2317 jmm_GetVMGlobals,
2318 jmm_GetInternalThreadTimes,
2319 jmm_ResetStatistic,
2320 jmm_SetPoolSensor,
2321 jmm_SetPoolThreshold,
2322 jmm_GetPoolCollectionUsage,
2323 jmm_GetGCExtAttributeInfo,
2324 jmm_GetLastGCStat,
2325 jmm_GetThreadCpuTimeWithKind,
2326 jmm_GetThreadCpuTimesWithKind,
2327 jmm_DumpHeap0,
2328 jmm_FindDeadlockedThreads,
2329 jmm_SetVMGlobal,
2330 NULL,
2331 jmm_DumpThreads,
2332 jmm_SetGCNotificationEnabled,
2333 jmm_GetDiagnosticCommands,
2334 jmm_GetDiagnosticCommandInfo,
2335 jmm_GetDiagnosticCommandArgumentsInfo,
2336 jmm_ExecuteDiagnosticCommand,
2337 jmm_SetDiagnosticFrameworkNotificationEnabled
2338 };
2339 #endif // INCLUDE_MANAGEMENT
2340
2341 void* Management::get_jmm_interface(int version) {
2342 #if INCLUDE_MANAGEMENT
2343 if (version == JMM_VERSION_1_0) {
2344 return (void*) &jmm_interface;
2345 }
2346 #endif // INCLUDE_MANAGEMENT
2347 return NULL;
2348 }