1 /*
2 * Copyright (c) 2003, 2013, 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/oop.inline.hpp"
34 #include "runtime/arguments.hpp"
35 #include "runtime/globals.hpp"
36 #include "runtime/handles.inline.hpp"
37 #include "runtime/interfaceSupport.hpp"
38 #include "runtime/javaCalls.hpp"
39 #include "runtime/jniHandles.hpp"
40 #include "runtime/os.hpp"
41 #include "runtime/serviceThread.hpp"
42 #include "services/classLoadingService.hpp"
43 #include "services/diagnosticCommand.hpp"
44 #include "services/diagnosticFramework.hpp"
45 #include "services/heapDumper.hpp"
46 #include "services/jmm.h"
47 #include "services/lowMemoryDetector.hpp"
48 #include "services/gcNotifier.hpp"
49 #include "services/nmtDCmd.hpp"
50 #include "services/management.hpp"
51 #include "services/memoryManager.hpp"
52 #include "services/memoryPool.hpp"
53 #include "services/memoryService.hpp"
54 #include "services/runtimeService.hpp"
55 #include "services/threadService.hpp"
56 #include "utilities/macros.hpp"
57
58 PerfVariable* Management::_begin_vm_creation_time = NULL;
59 PerfVariable* Management::_end_vm_creation_time = NULL;
60 PerfVariable* Management::_vm_init_done_time = NULL;
61
62 Klass* Management::_sensor_klass = NULL;
63 Klass* Management::_threadInfo_klass = NULL;
64 Klass* Management::_memoryUsage_klass = NULL;
65 Klass* Management::_memoryPoolMXBean_klass = NULL;
66 Klass* Management::_memoryManagerMXBean_klass = NULL;
67 Klass* Management::_garbageCollectorMXBean_klass = NULL;
68 Klass* Management::_managementFactory_klass = NULL;
69 Klass* Management::_garbageCollectorImpl_klass = NULL;
70 Klass* Management::_gcInfo_klass = NULL;
71 Klass* Management::_diagnosticCommandImpl_klass = NULL;
72 Klass* Management::_managementFactoryHelper_klass = NULL;
73
74
75 jmmOptionalSupport Management::_optional_support = {0};
76 TimeStamp Management::_stamp;
77
78 void management_init() {
79 #if INCLUDE_MANAGEMENT
80 Management::init();
81 ThreadService::init();
82 RuntimeService::init();
83 ClassLoadingService::init();
84 #else
85 ThreadService::init();
86 // Make sure the VM version is initialized
87 // This is normally called by RuntimeService::init().
88 // Since that is conditionalized out, we need to call it here.
89 Abstract_VM_Version::initialize();
90 #endif // INCLUDE_MANAGEMENT
91 }
92
93 #if INCLUDE_MANAGEMENT
94
95 void Management::init() {
96 EXCEPTION_MARK;
97
98 // These counters are for java.lang.management API support.
99 // They are created even if -XX:-UsePerfData is set and in
100 // that case, they will be allocated on C heap.
101
102 _begin_vm_creation_time =
103 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime",
104 PerfData::U_None, CHECK);
105
106 _end_vm_creation_time =
107 PerfDataManager::create_variable(SUN_RT, "createVmEndTime",
108 PerfData::U_None, CHECK);
109
110 _vm_init_done_time =
111 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime",
112 PerfData::U_None, CHECK);
113
114 // Initialize optional support
115 _optional_support.isLowMemoryDetectionSupported = 1;
116 _optional_support.isCompilationTimeMonitoringSupported = 1;
117 _optional_support.isThreadContentionMonitoringSupported = 1;
118
119 if (os::is_thread_cpu_time_supported()) {
120 _optional_support.isCurrentThreadCpuTimeSupported = 1;
121 _optional_support.isOtherThreadCpuTimeSupported = 1;
122 } else {
123 _optional_support.isCurrentThreadCpuTimeSupported = 0;
124 _optional_support.isOtherThreadCpuTimeSupported = 0;
125 }
126
127 _optional_support.isBootClassPathSupported = 1;
128 _optional_support.isObjectMonitorUsageSupported = 1;
129 #if INCLUDE_SERVICES
130 // This depends on the heap inspector
131 _optional_support.isSynchronizerUsageSupported = 1;
132 #endif // INCLUDE_SERVICES
133 _optional_support.isThreadAllocatedMemorySupported = 1;
134 _optional_support.isRemoteDiagnosticCommandsSupported = 1;
135
136 // Registration of the diagnostic commands
137 DCmdRegistrant::register_dcmds();
138 DCmdRegistrant::register_dcmds_ext();
139 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
140 | DCmd_Source_MBean;
141 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(full_export, true, false));
142 }
143
144 void Management::initialize(TRAPS) {
145 // Start the service thread
146 ServiceThread::initialize();
147
148 if (ManagementServer) {
149 ResourceMark rm(THREAD);
150 HandleMark hm(THREAD);
151
152 // Load and initialize the sun.management.Agent class
153 // invoke startAgent method to start the management server
154 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
155 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(),
156 loader,
157 Handle(),
158 true,
159 CHECK);
160 instanceKlassHandle ik (THREAD, k);
161
162 JavaValue result(T_VOID);
163 JavaCalls::call_static(&result,
164 ik,
165 vmSymbols::startAgent_name(),
166 vmSymbols::void_method_signature(),
167 CHECK);
168 }
169 }
170
171 void Management::get_optional_support(jmmOptionalSupport* support) {
172 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport));
173 }
174
175 Klass* Management::load_and_initialize_klass(Symbol* sh, TRAPS) {
176 Klass* k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL);
177 instanceKlassHandle ik (THREAD, k);
178 if (ik->should_be_initialized()) {
179 ik->initialize(CHECK_NULL);
180 }
181 // If these classes change to not be owned by the boot loader, they need
182 // to be walked to keep their class loader alive in oops_do.
183 assert(ik->class_loader() == NULL, "need to follow in oops_do");
184 return ik();
185 }
186
187 void Management::record_vm_startup_time(jlong begin, jlong duration) {
188 // if the performance counter is not initialized,
189 // then vm initialization failed; simply return.
190 if (_begin_vm_creation_time == NULL) return;
191
192 _begin_vm_creation_time->set_value(begin);
193 _end_vm_creation_time->set_value(begin + duration);
194 PerfMemory::set_accessible(true);
195 }
196
197 jlong Management::timestamp() {
198 TimeStamp t;
199 t.update();
200 return t.ticks() - _stamp.ticks();
201 }
202
203 void Management::oops_do(OopClosure* f) {
204 MemoryService::oops_do(f);
205 ThreadService::oops_do(f);
206 }
207
208 Klass* Management::java_lang_management_ThreadInfo_klass(TRAPS) {
209 if (_threadInfo_klass == NULL) {
210 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL);
211 }
212 return _threadInfo_klass;
213 }
214
215 Klass* Management::java_lang_management_MemoryUsage_klass(TRAPS) {
216 if (_memoryUsage_klass == NULL) {
217 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL);
218 }
219 return _memoryUsage_klass;
220 }
221
222 Klass* Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) {
223 if (_memoryPoolMXBean_klass == NULL) {
224 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL);
225 }
226 return _memoryPoolMXBean_klass;
227 }
228
229 Klass* Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) {
230 if (_memoryManagerMXBean_klass == NULL) {
231 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL);
232 }
233 return _memoryManagerMXBean_klass;
234 }
235
236 Klass* Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) {
237 if (_garbageCollectorMXBean_klass == NULL) {
238 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL);
239 }
240 return _garbageCollectorMXBean_klass;
241 }
242
243 Klass* Management::sun_management_Sensor_klass(TRAPS) {
244 if (_sensor_klass == NULL) {
245 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL);
246 }
247 return _sensor_klass;
248 }
249
250 Klass* Management::sun_management_ManagementFactory_klass(TRAPS) {
251 if (_managementFactory_klass == NULL) {
252 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL);
253 }
254 return _managementFactory_klass;
255 }
256
257 Klass* Management::sun_management_GarbageCollectorImpl_klass(TRAPS) {
258 if (_garbageCollectorImpl_klass == NULL) {
259 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL);
260 }
261 return _garbageCollectorImpl_klass;
262 }
263
264 Klass* Management::com_sun_management_GcInfo_klass(TRAPS) {
265 if (_gcInfo_klass == NULL) {
266 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL);
267 }
268 return _gcInfo_klass;
269 }
270
271 Klass* Management::sun_management_DiagnosticCommandImpl_klass(TRAPS) {
272 if (_diagnosticCommandImpl_klass == NULL) {
273 _diagnosticCommandImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_DiagnosticCommandImpl(), CHECK_NULL);
274 }
275 return _diagnosticCommandImpl_klass;
276 }
277
278 Klass* Management::sun_management_ManagementFactoryHelper_klass(TRAPS) {
279 if (_managementFactoryHelper_klass == NULL) {
280 _managementFactoryHelper_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactoryHelper(), CHECK_NULL);
281 }
282 return _managementFactoryHelper_klass;
283 }
284
285 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) {
286 Handle snapshot_thread(THREAD, snapshot->threadObj());
287
288 jlong contended_time;
289 jlong waited_time;
290 if (ThreadService::is_thread_monitoring_contention()) {
291 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks());
292 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks());
293 } else {
294 // set them to -1 if thread contention monitoring is disabled.
295 contended_time = max_julong;
296 waited_time = max_julong;
297 }
298
299 int thread_status = snapshot->thread_status();
300 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object");
301 if (snapshot->is_ext_suspended()) {
302 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED;
303 }
304 if (snapshot->is_in_native()) {
305 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE;
306 }
307
308 ThreadStackTrace* st = snapshot->get_stack_trace();
309 Handle stacktrace_h;
310 if (st != NULL) {
311 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK);
312 } else {
313 stacktrace_h = Handle();
314 }
315
316 args->push_oop(snapshot_thread);
317 args->push_int(thread_status);
318 args->push_oop(Handle(THREAD, snapshot->blocker_object()));
319 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner()));
320 args->push_long(snapshot->contended_enter_count());
321 args->push_long(contended_time);
322 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count());
323 args->push_long(waited_time);
324 args->push_oop(stacktrace_h);
325 }
326
327 // Helper function to construct a ThreadInfo object
328 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) {
329 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL);
330 instanceKlassHandle ik (THREAD, k);
331
332 JavaValue result(T_VOID);
333 JavaCallArguments args(14);
334
335 // First allocate a ThreadObj object and
336 // push the receiver as the first argument
337 Handle element = ik->allocate_instance_handle(CHECK_NULL);
338 args.push_oop(element);
339
340 // initialize the arguments for the ThreadInfo constructor
341 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL);
342
343 // Call ThreadInfo constructor with no locked monitors and synchronizers
344 JavaCalls::call_special(&result,
345 ik,
346 vmSymbols::object_initializer_name(),
347 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(),
348 &args,
349 CHECK_NULL);
350
351 return (instanceOop) element();
352 }
353
354 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot,
355 objArrayHandle monitors_array,
356 typeArrayHandle depths_array,
357 objArrayHandle synchronizers_array,
358 TRAPS) {
359 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL);
360 instanceKlassHandle ik (THREAD, k);
361
362 JavaValue result(T_VOID);
363 JavaCallArguments args(17);
364
365 // First allocate a ThreadObj object and
366 // push the receiver as the first argument
367 Handle element = ik->allocate_instance_handle(CHECK_NULL);
368 args.push_oop(element);
369
370 // initialize the arguments for the ThreadInfo constructor
371 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL);
372
373 // push the locked monitors and synchronizers in the arguments
374 args.push_oop(monitors_array);
375 args.push_oop(depths_array);
376 args.push_oop(synchronizers_array);
377
378 // Call ThreadInfo constructor with locked monitors and synchronizers
379 JavaCalls::call_special(&result,
380 ik,
381 vmSymbols::object_initializer_name(),
382 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(),
383 &args,
384 CHECK_NULL);
385
386 return (instanceOop) element();
387 }
388
389 // Helper functions
390 static JavaThread* find_java_thread_from_id(jlong thread_id) {
391 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock");
392
393 JavaThread* java_thread = NULL;
394 // Sequential search for now. Need to do better optimization later.
395 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) {
396 oop tobj = thread->threadObj();
397 if (!thread->is_exiting() &&
398 tobj != NULL &&
399 thread_id == java_lang_Thread::thread_id(tobj)) {
400 java_thread = thread;
401 break;
402 }
403 }
404 return java_thread;
405 }
406
407 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) {
408 if (mgr == NULL) {
409 THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
410 }
411 oop mgr_obj = JNIHandles::resolve(mgr);
412 instanceHandle h(THREAD, (instanceOop) mgr_obj);
413
414 Klass* k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL);
415 if (!h->is_a(k)) {
416 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
417 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class",
418 NULL);
419 }
420
421 MemoryManager* gc = MemoryService::get_memory_manager(h);
422 if (gc == NULL || !gc->is_gc_memory_manager()) {
423 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
424 "Invalid GC memory manager",
425 NULL);
426 }
427 return (GCMemoryManager*) gc;
428 }
429
430 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) {
431 if (obj == NULL) {
432 THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
433 }
434
435 oop pool_obj = JNIHandles::resolve(obj);
436 assert(pool_obj->is_instance(), "Should be an instanceOop");
437 instanceHandle ph(THREAD, (instanceOop) pool_obj);
438
439 return MemoryService::get_memory_pool(ph);
440 }
441
442 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) {
443 int num_threads = ids_ah->length();
444
445 // Validate input thread IDs
446 int i = 0;
447 for (i = 0; i < num_threads; i++) {
448 jlong tid = ids_ah->long_at(i);
449 if (tid <= 0) {
450 // throw exception if invalid thread id.
451 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
452 "Invalid thread ID entry");
453 }
454 }
455 }
456
457 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) {
458 // check if the element of infoArray is of type ThreadInfo class
459 Klass* threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK);
460 Klass* element_klass = ObjArrayKlass::cast(infoArray_h->klass())->element_klass();
461 if (element_klass != threadinfo_klass) {
462 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
463 "infoArray element type is not ThreadInfo class");
464 }
465 }
466
467
468 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) {
469 if (obj == NULL) {
470 THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
471 }
472
473 oop mgr_obj = JNIHandles::resolve(obj);
474 assert(mgr_obj->is_instance(), "Should be an instanceOop");
475 instanceHandle mh(THREAD, (instanceOop) mgr_obj);
476
477 return MemoryService::get_memory_manager(mh);
478 }
479
480 // Returns a version string and sets major and minor version if
481 // the input parameters are non-null.
482 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env))
483 return JMM_VERSION;
484 JVM_END
485
486 // Gets the list of VM monitoring and management optional supports
487 // Returns 0 if succeeded; otherwise returns non-zero.
488 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support))
489 if (support == NULL) {
490 return -1;
491 }
492 Management::get_optional_support(support);
493 return 0;
494 JVM_END
495
496 // Returns a java.lang.String object containing the input arguments to the VM.
497 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env))
498 ResourceMark rm(THREAD);
499
500 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) {
501 return NULL;
502 }
503
504 char** vm_flags = Arguments::jvm_flags_array();
505 char** vm_args = Arguments::jvm_args_array();
506 int num_flags = Arguments::num_jvm_flags();
507 int num_args = Arguments::num_jvm_args();
508
509 size_t length = 1; // null terminator
510 int i;
511 for (i = 0; i < num_flags; i++) {
512 length += strlen(vm_flags[i]);
513 }
514 for (i = 0; i < num_args; i++) {
515 length += strlen(vm_args[i]);
516 }
517 // add a space between each argument
518 length += num_flags + num_args - 1;
519
520 // Return the list of input arguments passed to the VM
521 // and preserve the order that the VM processes.
522 char* args = NEW_RESOURCE_ARRAY(char, length);
523 args[0] = '\0';
524 // concatenate all jvm_flags
525 if (num_flags > 0) {
526 strcat(args, vm_flags[0]);
527 for (i = 1; i < num_flags; i++) {
528 strcat(args, " ");
529 strcat(args, vm_flags[i]);
530 }
531 }
532
533 if (num_args > 0 && num_flags > 0) {
534 // append a space if args already contains one or more jvm_flags
535 strcat(args, " ");
536 }
537
538 // concatenate all jvm_args
539 if (num_args > 0) {
540 strcat(args, vm_args[0]);
541 for (i = 1; i < num_args; i++) {
542 strcat(args, " ");
543 strcat(args, vm_args[i]);
544 }
545 }
546
547 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL);
548 return JNIHandles::make_local(env, hargs());
549 JVM_END
550
551 // Returns an array of java.lang.String object containing the input arguments to the VM.
552 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env))
553 ResourceMark rm(THREAD);
554
555 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) {
556 return NULL;
557 }
558
559 char** vm_flags = Arguments::jvm_flags_array();
560 char** vm_args = Arguments::jvm_args_array();
561 int num_flags = Arguments::num_jvm_flags();
562 int num_args = Arguments::num_jvm_args();
563
564 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass());
565 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL);
566 objArrayHandle result_h(THREAD, r);
567
568 int index = 0;
569 for (int j = 0; j < num_flags; j++, index++) {
570 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL);
571 result_h->obj_at_put(index, h());
572 }
573 for (int i = 0; i < num_args; i++, index++) {
574 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL);
575 result_h->obj_at_put(index, h());
576 }
577 return (jobjectArray) JNIHandles::make_local(env, result_h());
578 JVM_END
579
580 // Returns an array of java/lang/management/MemoryPoolMXBean object
581 // one for each memory pool if obj == null; otherwise returns
582 // an array of memory pools for a given memory manager if
583 // it is a valid memory manager.
584 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj))
585 ResourceMark rm(THREAD);
586
587 int num_memory_pools;
588 MemoryManager* mgr = NULL;
589 if (obj == NULL) {
590 num_memory_pools = MemoryService::num_memory_pools();
591 } else {
592 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL);
593 if (mgr == NULL) {
594 return NULL;
595 }
596 num_memory_pools = mgr->num_memory_pools();
597 }
598
599 // Allocate the resulting MemoryPoolMXBean[] object
600 Klass* k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL);
601 instanceKlassHandle ik (THREAD, k);
602 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL);
603 objArrayHandle poolArray(THREAD, r);
604
605 if (mgr == NULL) {
606 // Get all memory pools
607 for (int i = 0; i < num_memory_pools; i++) {
608 MemoryPool* pool = MemoryService::get_memory_pool(i);
609 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL);
610 instanceHandle ph(THREAD, p);
611 poolArray->obj_at_put(i, ph());
612 }
613 } else {
614 // Get memory pools managed by a given memory manager
615 for (int i = 0; i < num_memory_pools; i++) {
616 MemoryPool* pool = mgr->get_memory_pool(i);
617 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL);
618 instanceHandle ph(THREAD, p);
619 poolArray->obj_at_put(i, ph());
620 }
621 }
622 return (jobjectArray) JNIHandles::make_local(env, poolArray());
623 JVM_END
624
625 // Returns an array of java/lang/management/MemoryManagerMXBean object
626 // one for each memory manager if obj == null; otherwise returns
627 // an array of memory managers for a given memory pool if
628 // it is a valid memory pool.
629 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj))
630 ResourceMark rm(THREAD);
631
632 int num_mgrs;
633 MemoryPool* pool = NULL;
634 if (obj == NULL) {
635 num_mgrs = MemoryService::num_memory_managers();
636 } else {
637 pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
638 if (pool == NULL) {
639 return NULL;
640 }
641 num_mgrs = pool->num_memory_managers();
642 }
643
644 // Allocate the resulting MemoryManagerMXBean[] object
645 Klass* k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL);
646 instanceKlassHandle ik (THREAD, k);
647 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL);
648 objArrayHandle mgrArray(THREAD, r);
649
650 if (pool == NULL) {
651 // Get all memory managers
652 for (int i = 0; i < num_mgrs; i++) {
653 MemoryManager* mgr = MemoryService::get_memory_manager(i);
654 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL);
655 instanceHandle ph(THREAD, p);
656 mgrArray->obj_at_put(i, ph());
657 }
658 } else {
659 // Get memory managers for a given memory pool
660 for (int i = 0; i < num_mgrs; i++) {
661 MemoryManager* mgr = pool->get_memory_manager(i);
662 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL);
663 instanceHandle ph(THREAD, p);
664 mgrArray->obj_at_put(i, ph());
665 }
666 }
667 return (jobjectArray) JNIHandles::make_local(env, mgrArray());
668 JVM_END
669
670
671 // Returns a java/lang/management/MemoryUsage object containing the memory usage
672 // of a given memory pool.
673 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj))
674 ResourceMark rm(THREAD);
675
676 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
677 if (pool != NULL) {
678 MemoryUsage usage = pool->get_memory_usage();
679 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
680 return JNIHandles::make_local(env, h());
681 } else {
682 return NULL;
683 }
684 JVM_END
685
686 // Returns a java/lang/management/MemoryUsage object containing the memory usage
687 // of a given memory pool.
688 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj))
689 ResourceMark rm(THREAD);
690
691 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
692 if (pool != NULL) {
693 MemoryUsage usage = pool->get_peak_memory_usage();
694 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
695 return JNIHandles::make_local(env, h());
696 } else {
697 return NULL;
698 }
699 JVM_END
700
701 // Returns a java/lang/management/MemoryUsage object containing the memory usage
702 // of a given memory pool after most recent GC.
703 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj))
704 ResourceMark rm(THREAD);
705
706 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL);
707 if (pool != NULL && pool->is_collected_pool()) {
708 MemoryUsage usage = pool->get_last_collection_usage();
709 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
710 return JNIHandles::make_local(env, h());
711 } else {
712 return NULL;
713 }
714 JVM_END
715
716 // Sets the memory pool sensor for a threshold type
717 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj))
718 if (obj == NULL || sensorObj == NULL) {
719 THROW(vmSymbols::java_lang_NullPointerException());
720 }
721
722 Klass* sensor_klass = Management::sun_management_Sensor_klass(CHECK);
723 oop s = JNIHandles::resolve(sensorObj);
724 assert(s->is_instance(), "Sensor should be an instanceOop");
725 instanceHandle sensor_h(THREAD, (instanceOop) s);
726 if (!sensor_h->is_a(sensor_klass)) {
727 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
728 "Sensor is not an instance of sun.management.Sensor class");
729 }
730
731 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK);
732 assert(mpool != NULL, "MemoryPool should exist");
733
734 switch (type) {
735 case JMM_USAGE_THRESHOLD_HIGH:
736 case JMM_USAGE_THRESHOLD_LOW:
737 // have only one sensor for threshold high and low
738 mpool->set_usage_sensor_obj(sensor_h);
739 break;
740 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH:
741 case JMM_COLLECTION_USAGE_THRESHOLD_LOW:
742 // have only one sensor for threshold high and low
743 mpool->set_gc_usage_sensor_obj(sensor_h);
744 break;
745 default:
746 assert(false, "Unrecognized type");
747 }
748
749 JVM_END
750
751
752 // Sets the threshold of a given memory pool.
753 // Returns the previous threshold.
754 //
755 // Input parameters:
756 // pool - the MemoryPoolMXBean object
757 // type - threshold type
758 // threshold - the new threshold (must not be negative)
759 //
760 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold))
761 if (threshold < 0) {
762 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
763 "Invalid threshold value",
764 -1);
765 }
766
767 if ((size_t)threshold > max_uintx) {
768 stringStream st;
769 st.print("Invalid valid threshold value. Threshold value (" UINT64_FORMAT ") > max value of size_t (" SIZE_FORMAT ")", (size_t)threshold, max_uintx);
770 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1);
771 }
772
773 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L));
774 assert(pool != NULL, "MemoryPool should exist");
775
776 jlong prev = 0;
777 switch (type) {
778 case JMM_USAGE_THRESHOLD_HIGH:
779 if (!pool->usage_threshold()->is_high_threshold_supported()) {
780 return -1;
781 }
782 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold);
783 break;
784
785 case JMM_USAGE_THRESHOLD_LOW:
786 if (!pool->usage_threshold()->is_low_threshold_supported()) {
787 return -1;
788 }
789 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold);
790 break;
791
792 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH:
793 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) {
794 return -1;
795 }
796 // return and the new threshold is effective for the next GC
797 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold);
798
799 case JMM_COLLECTION_USAGE_THRESHOLD_LOW:
800 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) {
801 return -1;
802 }
803 // return and the new threshold is effective for the next GC
804 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold);
805
806 default:
807 assert(false, "Unrecognized type");
808 return -1;
809 }
810
811 // When the threshold is changed, reevaluate if the low memory
812 // detection is enabled.
813 if (prev != threshold) {
814 LowMemoryDetector::recompute_enabled_for_collected_pools();
815 LowMemoryDetector::detect_low_memory(pool);
816 }
817 return prev;
818 JVM_END
819
820 // Gets an array containing the amount of memory allocated on the Java
821 // heap for a set of threads (in bytes). Each element of the array is
822 // the amount of memory allocated for the thread ID specified in the
823 // corresponding entry in the given array of thread IDs; or -1 if the
824 // thread does not exist or has terminated.
825 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids,
826 jlongArray sizeArray))
827 // Check if threads is null
828 if (ids == NULL || sizeArray == NULL) {
829 THROW(vmSymbols::java_lang_NullPointerException());
830 }
831
832 ResourceMark rm(THREAD);
833 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids));
834 typeArrayHandle ids_ah(THREAD, ta);
835
836 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray));
837 typeArrayHandle sizeArray_h(THREAD, sa);
838
839 // validate the thread id array
840 validate_thread_id_array(ids_ah, CHECK);
841
842 // sizeArray must be of the same length as the given array of thread IDs
843 int num_threads = ids_ah->length();
844 if (num_threads != sizeArray_h->length()) {
845 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
846 "The length of the given long array does not match the length of "
847 "the given array of thread IDs");
848 }
849
850 MutexLockerEx ml(Threads_lock);
851 for (int i = 0; i < num_threads; i++) {
852 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i));
853 if (java_thread != NULL) {
854 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes());
855 }
856 }
857 JVM_END
858
859 // Returns a java/lang/management/MemoryUsage object representing
860 // the memory usage for the heap or non-heap memory.
861 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap))
862 ResourceMark rm(THREAD);
863
864 // Calculate the memory usage
865 size_t total_init = 0;
866 size_t total_used = 0;
867 size_t total_committed = 0;
868 size_t total_max = 0;
869 bool has_undefined_init_size = false;
870 bool has_undefined_max_size = false;
871
872 for (int i = 0; i < MemoryService::num_memory_pools(); i++) {
873 MemoryPool* pool = MemoryService::get_memory_pool(i);
874 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) {
875 MemoryUsage u = pool->get_memory_usage();
876 total_used += u.used();
877 total_committed += u.committed();
878
879 if (u.init_size() == (size_t)-1) {
880 has_undefined_init_size = true;
881 }
882 if (!has_undefined_init_size) {
883 total_init += u.init_size();
884 }
885
886 if (u.max_size() == (size_t)-1) {
887 has_undefined_max_size = true;
888 }
889 if (!has_undefined_max_size) {
890 total_max += u.max_size();
891 }
892 }
893 }
894
895 // if any one of the memory pool has undefined init_size or max_size,
896 // set it to -1
897 if (has_undefined_init_size) {
898 total_init = (size_t)-1;
899 }
900 if (has_undefined_max_size) {
901 total_max = (size_t)-1;
902 }
903
904 MemoryUsage usage((heap ? InitialHeapSize : total_init),
905 total_used,
906 total_committed,
907 (heap ? Universe::heap()->max_capacity() : total_max));
908
909 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
910 return JNIHandles::make_local(env, obj());
911 JVM_END
912
913 // Returns the boolean value of a given attribute.
914 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att))
915 switch (att) {
916 case JMM_VERBOSE_GC:
917 return MemoryService::get_verbose();
918 case JMM_VERBOSE_CLASS:
919 return ClassLoadingService::get_verbose();
920 case JMM_THREAD_CONTENTION_MONITORING:
921 return ThreadService::is_thread_monitoring_contention();
922 case JMM_THREAD_CPU_TIME:
923 return ThreadService::is_thread_cpu_time_enabled();
924 case JMM_THREAD_ALLOCATED_MEMORY:
925 return ThreadService::is_thread_allocated_memory_enabled();
926 default:
927 assert(0, "Unrecognized attribute");
928 return false;
929 }
930 JVM_END
931
932 // Sets the given boolean attribute and returns the previous value.
933 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag))
934 switch (att) {
935 case JMM_VERBOSE_GC:
936 return MemoryService::set_verbose(flag != 0);
937 case JMM_VERBOSE_CLASS:
938 return ClassLoadingService::set_verbose(flag != 0);
939 case JMM_THREAD_CONTENTION_MONITORING:
940 return ThreadService::set_thread_monitoring_contention(flag != 0);
941 case JMM_THREAD_CPU_TIME:
942 return ThreadService::set_thread_cpu_time_enabled(flag != 0);
943 case JMM_THREAD_ALLOCATED_MEMORY:
944 return ThreadService::set_thread_allocated_memory_enabled(flag != 0);
945 default:
946 assert(0, "Unrecognized attribute");
947 return false;
948 }
949 JVM_END
950
951
952 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) {
953 switch (att) {
954 case JMM_GC_TIME_MS:
955 return mgr->gc_time_ms();
956
957 case JMM_GC_COUNT:
958 return mgr->gc_count();
959
960 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE:
961 // current implementation only has 1 ext attribute
962 return 1;
963
964 default:
965 assert(0, "Unrecognized GC attribute");
966 return -1;
967 }
968 }
969
970 class VmThreadCountClosure: public ThreadClosure {
971 private:
972 int _count;
973 public:
974 VmThreadCountClosure() : _count(0) {};
975 void do_thread(Thread* thread);
976 int count() { return _count; }
977 };
978
979 void VmThreadCountClosure::do_thread(Thread* thread) {
980 // exclude externally visible JavaThreads
981 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) {
982 return;
983 }
984
985 _count++;
986 }
987
988 static jint get_vm_thread_count() {
989 VmThreadCountClosure vmtcc;
990 {
991 MutexLockerEx ml(Threads_lock);
992 Threads::threads_do(&vmtcc);
993 }
994
995 return vmtcc.count();
996 }
997
998 static jint get_num_flags() {
999 // last flag entry is always NULL, so subtract 1
1000 int nFlags = (int) Flag::numFlags - 1;
1001 int count = 0;
1002 for (int i = 0; i < nFlags; i++) {
1003 Flag* flag = &Flag::flags[i];
1004 // Exclude the locked (diagnostic, experimental) flags
1005 if (flag->is_unlocked() || flag->is_unlocker()) {
1006 count++;
1007 }
1008 }
1009 return count;
1010 }
1011
1012 static jlong get_long_attribute(jmmLongAttribute att) {
1013 switch (att) {
1014 case JMM_CLASS_LOADED_COUNT:
1015 return ClassLoadingService::loaded_class_count();
1016
1017 case JMM_CLASS_UNLOADED_COUNT:
1018 return ClassLoadingService::unloaded_class_count();
1019
1020 case JMM_THREAD_TOTAL_COUNT:
1021 return ThreadService::get_total_thread_count();
1022
1023 case JMM_THREAD_LIVE_COUNT:
1024 return ThreadService::get_live_thread_count();
1025
1026 case JMM_THREAD_PEAK_COUNT:
1027 return ThreadService::get_peak_thread_count();
1028
1029 case JMM_THREAD_DAEMON_COUNT:
1030 return ThreadService::get_daemon_thread_count();
1031
1032 case JMM_JVM_INIT_DONE_TIME_MS:
1033 return Management::vm_init_done_time();
1034
1035 case JMM_COMPILE_TOTAL_TIME_MS:
1036 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks());
1037
1038 case JMM_OS_PROCESS_ID:
1039 return os::current_process_id();
1040
1041 // Hotspot-specific counters
1042 case JMM_CLASS_LOADED_BYTES:
1043 return ClassLoadingService::loaded_class_bytes();
1044
1045 case JMM_CLASS_UNLOADED_BYTES:
1046 return ClassLoadingService::unloaded_class_bytes();
1047
1048 case JMM_SHARED_CLASS_LOADED_COUNT:
1049 return ClassLoadingService::loaded_shared_class_count();
1050
1051 case JMM_SHARED_CLASS_UNLOADED_COUNT:
1052 return ClassLoadingService::unloaded_shared_class_count();
1053
1054
1055 case JMM_SHARED_CLASS_LOADED_BYTES:
1056 return ClassLoadingService::loaded_shared_class_bytes();
1057
1058 case JMM_SHARED_CLASS_UNLOADED_BYTES:
1059 return ClassLoadingService::unloaded_shared_class_bytes();
1060
1061 case JMM_TOTAL_CLASSLOAD_TIME_MS:
1062 return ClassLoader::classloader_time_ms();
1063
1064 case JMM_VM_GLOBAL_COUNT:
1065 return get_num_flags();
1066
1067 case JMM_SAFEPOINT_COUNT:
1068 return RuntimeService::safepoint_count();
1069
1070 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS:
1071 return RuntimeService::safepoint_sync_time_ms();
1072
1073 case JMM_TOTAL_STOPPED_TIME_MS:
1074 return RuntimeService::safepoint_time_ms();
1075
1076 case JMM_TOTAL_APP_TIME_MS:
1077 return RuntimeService::application_time_ms();
1078
1079 case JMM_VM_THREAD_COUNT:
1080 return get_vm_thread_count();
1081
1082 case JMM_CLASS_INIT_TOTAL_COUNT:
1083 return ClassLoader::class_init_count();
1084
1085 case JMM_CLASS_INIT_TOTAL_TIME_MS:
1086 return ClassLoader::class_init_time_ms();
1087
1088 case JMM_CLASS_VERIFY_TOTAL_TIME_MS:
1089 return ClassLoader::class_verify_time_ms();
1090
1091 case JMM_METHOD_DATA_SIZE_BYTES:
1092 return ClassLoadingService::class_method_data_size();
1093
1094 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES:
1095 return os::physical_memory();
1096
1097 default:
1098 return -1;
1099 }
1100 }
1101
1102
1103 // Returns the long value of a given attribute.
1104 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att))
1105 if (obj == NULL) {
1106 return get_long_attribute(att);
1107 } else {
1108 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L));
1109 if (mgr != NULL) {
1110 return get_gc_attribute(mgr, att);
1111 }
1112 }
1113 return -1;
1114 JVM_END
1115
1116 // Gets the value of all attributes specified in the given array
1117 // and sets the value in the result array.
1118 // Returns the number of attributes found.
1119 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env,
1120 jobject obj,
1121 jmmLongAttribute* atts,
1122 jint count,
1123 jlong* result))
1124
1125 int num_atts = 0;
1126 if (obj == NULL) {
1127 for (int i = 0; i < count; i++) {
1128 result[i] = get_long_attribute(atts[i]);
1129 if (result[i] != -1) {
1130 num_atts++;
1131 }
1132 }
1133 } else {
1134 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0);
1135 for (int i = 0; i < count; i++) {
1136 result[i] = get_gc_attribute(mgr, atts[i]);
1137 if (result[i] != -1) {
1138 num_atts++;
1139 }
1140 }
1141 }
1142 return num_atts;
1143 JVM_END
1144
1145 // Helper function to do thread dump for a specific list of threads
1146 static void do_thread_dump(ThreadDumpResult* dump_result,
1147 typeArrayHandle ids_ah, // array of thread ID (long[])
1148 int num_threads,
1149 int max_depth,
1150 bool with_locked_monitors,
1151 bool with_locked_synchronizers,
1152 TRAPS) {
1153
1154 // First get an array of threadObj handles.
1155 // A JavaThread may terminate before we get the stack trace.
1156 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads);
1157 {
1158 MutexLockerEx ml(Threads_lock);
1159 for (int i = 0; i < num_threads; i++) {
1160 jlong tid = ids_ah->long_at(i);
1161 JavaThread* jt = find_java_thread_from_id(tid);
1162 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL);
1163 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj);
1164 thread_handle_array->append(threadObj_h);
1165 }
1166 }
1167
1168 // Obtain thread dumps and thread snapshot information
1169 VM_ThreadDump op(dump_result,
1170 thread_handle_array,
1171 num_threads,
1172 max_depth, /* stack depth */
1173 with_locked_monitors,
1174 with_locked_synchronizers);
1175 VMThread::execute(&op);
1176 }
1177
1178 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo
1179 // for the thread ID specified in the corresponding entry in
1180 // the given array of thread IDs; or NULL if the thread does not exist
1181 // or has terminated.
1182 //
1183 // Input parameters:
1184 // ids - array of thread IDs
1185 // maxDepth - the maximum depth of stack traces to be dumped:
1186 // maxDepth == -1 requests to dump entire stack trace.
1187 // maxDepth == 0 requests no stack trace.
1188 // infoArray - array of ThreadInfo objects
1189 //
1190 // QQQ - Why does this method return a value instead of void?
1191 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray))
1192 // Check if threads is null
1193 if (ids == NULL || infoArray == NULL) {
1194 THROW_(vmSymbols::java_lang_NullPointerException(), -1);
1195 }
1196
1197 if (maxDepth < -1) {
1198 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1199 "Invalid maxDepth", -1);
1200 }
1201
1202 ResourceMark rm(THREAD);
1203 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids));
1204 typeArrayHandle ids_ah(THREAD, ta);
1205
1206 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray);
1207 objArrayOop oa = objArrayOop(infoArray_obj);
1208 objArrayHandle infoArray_h(THREAD, oa);
1209
1210 // validate the thread id array
1211 validate_thread_id_array(ids_ah, CHECK_0);
1212
1213 // validate the ThreadInfo[] parameters
1214 validate_thread_info_array(infoArray_h, CHECK_0);
1215
1216 // infoArray must be of the same length as the given array of thread IDs
1217 int num_threads = ids_ah->length();
1218 if (num_threads != infoArray_h->length()) {
1219 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1220 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1);
1221 }
1222
1223 if (JDK_Version::is_gte_jdk16x_version()) {
1224 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
1225 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0);
1226 }
1227
1228 // Must use ThreadDumpResult to store the ThreadSnapshot.
1229 // GC may occur after the thread snapshots are taken but before
1230 // this function returns. The threadObj and other oops kept
1231 // in the ThreadSnapshot are marked and adjusted during GC.
1232 ThreadDumpResult dump_result(num_threads);
1233
1234 if (maxDepth == 0) {
1235 // no stack trace dumped - do not need to stop the world
1236 {
1237 MutexLockerEx ml(Threads_lock);
1238 for (int i = 0; i < num_threads; i++) {
1239 jlong tid = ids_ah->long_at(i);
1240 JavaThread* jt = find_java_thread_from_id(tid);
1241 ThreadSnapshot* ts;
1242 if (jt == NULL) {
1243 // if the thread does not exist or now it is terminated,
1244 // create dummy snapshot
1245 ts = new ThreadSnapshot();
1246 } else {
1247 ts = new ThreadSnapshot(jt);
1248 }
1249 dump_result.add_thread_snapshot(ts);
1250 }
1251 }
1252 } else {
1253 // obtain thread dump with the specific list of threads with stack trace
1254 do_thread_dump(&dump_result,
1255 ids_ah,
1256 num_threads,
1257 maxDepth,
1258 false, /* no locked monitor */
1259 false, /* no locked synchronizers */
1260 CHECK_0);
1261 }
1262
1263 int num_snapshots = dump_result.num_snapshots();
1264 assert(num_snapshots == num_threads, "Must match the number of thread snapshots");
1265 int index = 0;
1266 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) {
1267 // For each thread, create an java/lang/management/ThreadInfo object
1268 // and fill with the thread information
1269
1270 if (ts->threadObj() == NULL) {
1271 // if the thread does not exist or now it is terminated, set threadinfo to NULL
1272 infoArray_h->obj_at_put(index, NULL);
1273 continue;
1274 }
1275
1276 // Create java.lang.management.ThreadInfo object
1277 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0);
1278 infoArray_h->obj_at_put(index, info_obj);
1279 }
1280 return 0;
1281 JVM_END
1282
1283 // Dump thread info for the specified threads.
1284 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo
1285 // for the thread ID specified in the corresponding entry in
1286 // the given array of thread IDs; or NULL if the thread does not exist
1287 // or has terminated.
1288 //
1289 // Input parameter:
1290 // ids - array of thread IDs; NULL indicates all live threads
1291 // locked_monitors - if true, dump locked object monitors
1292 // locked_synchronizers - if true, dump locked JSR-166 synchronizers
1293 //
1294 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers))
1295 ResourceMark rm(THREAD);
1296
1297 if (JDK_Version::is_gte_jdk16x_version()) {
1298 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
1299 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL);
1300 }
1301
1302 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids));
1303 int num_threads = (ta != NULL ? ta->length() : 0);
1304 typeArrayHandle ids_ah(THREAD, ta);
1305
1306 ThreadDumpResult dump_result(num_threads); // can safepoint
1307
1308 if (ids_ah() != NULL) {
1309
1310 // validate the thread id array
1311 validate_thread_id_array(ids_ah, CHECK_NULL);
1312
1313 // obtain thread dump of a specific list of threads
1314 do_thread_dump(&dump_result,
1315 ids_ah,
1316 num_threads,
1317 -1, /* entire stack */
1318 (locked_monitors ? true : false), /* with locked monitors */
1319 (locked_synchronizers ? true : false), /* with locked synchronizers */
1320 CHECK_NULL);
1321 } else {
1322 // obtain thread dump of all threads
1323 VM_ThreadDump op(&dump_result,
1324 -1, /* entire stack */
1325 (locked_monitors ? true : false), /* with locked monitors */
1326 (locked_synchronizers ? true : false) /* with locked synchronizers */);
1327 VMThread::execute(&op);
1328 }
1329
1330 int num_snapshots = dump_result.num_snapshots();
1331
1332 // create the result ThreadInfo[] object
1333 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL);
1334 instanceKlassHandle ik (THREAD, k);
1335 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL);
1336 objArrayHandle result_h(THREAD, r);
1337
1338 int index = 0;
1339 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) {
1340 if (ts->threadObj() == NULL) {
1341 // if the thread does not exist or now it is terminated, set threadinfo to NULL
1342 result_h->obj_at_put(index, NULL);
1343 continue;
1344 }
1345
1346 ThreadStackTrace* stacktrace = ts->get_stack_trace();
1347 assert(stacktrace != NULL, "Must have a stack trace dumped");
1348
1349 // Create Object[] filled with locked monitors
1350 // Create int[] filled with the stack depth where a monitor was locked
1351 int num_frames = stacktrace->get_stack_depth();
1352 int num_locked_monitors = stacktrace->num_jni_locked_monitors();
1353
1354 // Count the total number of locked monitors
1355 for (int i = 0; i < num_frames; i++) {
1356 StackFrameInfo* frame = stacktrace->stack_frame_at(i);
1357 num_locked_monitors += frame->num_locked_monitors();
1358 }
1359
1360 objArrayHandle monitors_array;
1361 typeArrayHandle depths_array;
1362 objArrayHandle synchronizers_array;
1363
1364 if (locked_monitors) {
1365 // Constructs Object[] and int[] to contain the object monitor and the stack depth
1366 // where the thread locked it
1367 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL);
1368 objArrayHandle mh(THREAD, array);
1369 monitors_array = mh;
1370
1371 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL);
1372 typeArrayHandle dh(THREAD, tarray);
1373 depths_array = dh;
1374
1375 int count = 0;
1376 int j = 0;
1377 for (int depth = 0; depth < num_frames; depth++) {
1378 StackFrameInfo* frame = stacktrace->stack_frame_at(depth);
1379 int len = frame->num_locked_monitors();
1380 GrowableArray<oop>* locked_monitors = frame->locked_monitors();
1381 for (j = 0; j < len; j++) {
1382 oop monitor = locked_monitors->at(j);
1383 assert(monitor != NULL && monitor->is_instance(), "must be a Java object");
1384 monitors_array->obj_at_put(count, monitor);
1385 depths_array->int_at_put(count, depth);
1386 count++;
1387 }
1388 }
1389
1390 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors();
1391 for (j = 0; j < jni_locked_monitors->length(); j++) {
1392 oop object = jni_locked_monitors->at(j);
1393 assert(object != NULL && object->is_instance(), "must be a Java object");
1394 monitors_array->obj_at_put(count, object);
1395 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info
1396 depths_array->int_at_put(count, -1);
1397 count++;
1398 }
1399 assert(count == num_locked_monitors, "number of locked monitors doesn't match");
1400 }
1401
1402 if (locked_synchronizers) {
1403 // Create Object[] filled with locked JSR-166 synchronizers
1404 assert(ts->threadObj() != NULL, "Must be a valid JavaThread");
1405 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks();
1406 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL);
1407 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0);
1408
1409 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL);
1410 objArrayHandle sh(THREAD, array);
1411 synchronizers_array = sh;
1412
1413 for (int k = 0; k < num_locked_synchronizers; k++) {
1414 synchronizers_array->obj_at_put(k, locks->at(k));
1415 }
1416 }
1417
1418 // Create java.lang.management.ThreadInfo object
1419 instanceOop info_obj = Management::create_thread_info_instance(ts,
1420 monitors_array,
1421 depths_array,
1422 synchronizers_array,
1423 CHECK_NULL);
1424 result_h->obj_at_put(index, info_obj);
1425 }
1426
1427 return (jobjectArray) JNIHandles::make_local(env, result_h());
1428 JVM_END
1429
1430 // Returns an array of Class objects.
1431 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env))
1432 ResourceMark rm(THREAD);
1433
1434 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter
1435
1436 int num_classes = lce.num_loaded_classes();
1437 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0);
1438 objArrayHandle classes_ah(THREAD, r);
1439
1440 for (int i = 0; i < num_classes; i++) {
1441 KlassHandle kh = lce.get_klass(i);
1442 oop mirror = kh()->java_mirror();
1443 classes_ah->obj_at_put(i, mirror);
1444 }
1445
1446 return (jobjectArray) JNIHandles::make_local(env, classes_ah());
1447 JVM_END
1448
1449 // Reset statistic. Return true if the requested statistic is reset.
1450 // Otherwise, return false.
1451 //
1452 // Input parameters:
1453 // obj - specify which instance the statistic associated with to be reset
1454 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object.
1455 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID.
1456 // type - the type of statistic to be reset
1457 //
1458 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type))
1459 ResourceMark rm(THREAD);
1460
1461 switch (type) {
1462 case JMM_STAT_PEAK_THREAD_COUNT:
1463 ThreadService::reset_peak_thread_count();
1464 return true;
1465
1466 case JMM_STAT_THREAD_CONTENTION_COUNT:
1467 case JMM_STAT_THREAD_CONTENTION_TIME: {
1468 jlong tid = obj.j;
1469 if (tid < 0) {
1470 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE);
1471 }
1472
1473 // Look for the JavaThread of this given tid
1474 MutexLockerEx ml(Threads_lock);
1475 if (tid == 0) {
1476 // reset contention statistics for all threads if tid == 0
1477 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) {
1478 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) {
1479 ThreadService::reset_contention_count_stat(java_thread);
1480 } else {
1481 ThreadService::reset_contention_time_stat(java_thread);
1482 }
1483 }
1484 } else {
1485 // reset contention statistics for a given thread
1486 JavaThread* java_thread = find_java_thread_from_id(tid);
1487 if (java_thread == NULL) {
1488 return false;
1489 }
1490
1491 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) {
1492 ThreadService::reset_contention_count_stat(java_thread);
1493 } else {
1494 ThreadService::reset_contention_time_stat(java_thread);
1495 }
1496 }
1497 return true;
1498 break;
1499 }
1500 case JMM_STAT_PEAK_POOL_USAGE: {
1501 jobject o = obj.l;
1502 if (o == NULL) {
1503 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
1504 }
1505
1506 oop pool_obj = JNIHandles::resolve(o);
1507 assert(pool_obj->is_instance(), "Should be an instanceOop");
1508 instanceHandle ph(THREAD, (instanceOop) pool_obj);
1509
1510 MemoryPool* pool = MemoryService::get_memory_pool(ph);
1511 if (pool != NULL) {
1512 pool->reset_peak_memory_usage();
1513 return true;
1514 }
1515 break;
1516 }
1517 case JMM_STAT_GC_STAT: {
1518 jobject o = obj.l;
1519 if (o == NULL) {
1520 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
1521 }
1522
1523 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0);
1524 if (mgr != NULL) {
1525 mgr->reset_gc_stat();
1526 return true;
1527 }
1528 break;
1529 }
1530 default:
1531 assert(0, "Unknown Statistic Type");
1532 }
1533 return false;
1534 JVM_END
1535
1536 // Returns the fast estimate of CPU time consumed by
1537 // a given thread (in nanoseconds).
1538 // If thread_id == 0, return CPU time for the current thread.
1539 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id))
1540 if (!os::is_thread_cpu_time_supported()) {
1541 return -1;
1542 }
1543
1544 if (thread_id < 0) {
1545 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1546 "Invalid thread ID", -1);
1547 }
1548
1549 JavaThread* java_thread = NULL;
1550 if (thread_id == 0) {
1551 // current thread
1552 return os::current_thread_cpu_time();
1553 } else {
1554 MutexLockerEx ml(Threads_lock);
1555 java_thread = find_java_thread_from_id(thread_id);
1556 if (java_thread != NULL) {
1557 return os::thread_cpu_time((Thread*) java_thread);
1558 }
1559 }
1560 return -1;
1561 JVM_END
1562
1563 // Returns the CPU time consumed by a given thread (in nanoseconds).
1564 // If thread_id == 0, CPU time for the current thread is returned.
1565 // If user_sys_cpu_time = true, user level and system CPU time of
1566 // a given thread is returned; otherwise, only user level CPU time
1567 // is returned.
1568 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time))
1569 if (!os::is_thread_cpu_time_supported()) {
1570 return -1;
1571 }
1572
1573 if (thread_id < 0) {
1574 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1575 "Invalid thread ID", -1);
1576 }
1577
1578 JavaThread* java_thread = NULL;
1579 if (thread_id == 0) {
1580 // current thread
1581 return os::current_thread_cpu_time(user_sys_cpu_time != 0);
1582 } else {
1583 MutexLockerEx ml(Threads_lock);
1584 java_thread = find_java_thread_from_id(thread_id);
1585 if (java_thread != NULL) {
1586 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0);
1587 }
1588 }
1589 return -1;
1590 JVM_END
1591
1592 // Gets an array containing the CPU times consumed by a set of threads
1593 // (in nanoseconds). Each element of the array is the CPU time for the
1594 // thread ID specified in the corresponding entry in the given array
1595 // of thread IDs; or -1 if the thread does not exist or has terminated.
1596 // If user_sys_cpu_time = true, the sum of user level and system CPU time
1597 // for the given thread is returned; otherwise, only user level CPU time
1598 // is returned.
1599 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids,
1600 jlongArray timeArray,
1601 jboolean user_sys_cpu_time))
1602 // Check if threads is null
1603 if (ids == NULL || timeArray == NULL) {
1604 THROW(vmSymbols::java_lang_NullPointerException());
1605 }
1606
1607 ResourceMark rm(THREAD);
1608 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids));
1609 typeArrayHandle ids_ah(THREAD, ta);
1610
1611 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray));
1612 typeArrayHandle timeArray_h(THREAD, tia);
1613
1614 // validate the thread id array
1615 validate_thread_id_array(ids_ah, CHECK);
1616
1617 // timeArray must be of the same length as the given array of thread IDs
1618 int num_threads = ids_ah->length();
1619 if (num_threads != timeArray_h->length()) {
1620 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1621 "The length of the given long array does not match the length of "
1622 "the given array of thread IDs");
1623 }
1624
1625 MutexLockerEx ml(Threads_lock);
1626 for (int i = 0; i < num_threads; i++) {
1627 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i));
1628 if (java_thread != NULL) {
1629 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread,
1630 user_sys_cpu_time != 0));
1631 }
1632 }
1633 JVM_END
1634
1635 // Returns a String array of all VM global flag names
1636 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env))
1637 // last flag entry is always NULL, so subtract 1
1638 int nFlags = (int) Flag::numFlags - 1;
1639 // allocate a temp array
1640 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(),
1641 nFlags, CHECK_0);
1642 objArrayHandle flags_ah(THREAD, r);
1643 int num_entries = 0;
1644 for (int i = 0; i < nFlags; i++) {
1645 Flag* flag = &Flag::flags[i];
1646 // Exclude the locked (experimental, diagnostic) flags
1647 if (flag->is_unlocked() || flag->is_unlocker()) {
1648 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0);
1649 flags_ah->obj_at_put(num_entries, s());
1650 num_entries++;
1651 }
1652 }
1653
1654 if (num_entries < nFlags) {
1655 // Return array of right length
1656 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0);
1657 for(int i = 0; i < num_entries; i++) {
1658 res->obj_at_put(i, flags_ah->obj_at(i));
1659 }
1660 return (jobjectArray)JNIHandles::make_local(env, res);
1661 }
1662
1663 return (jobjectArray)JNIHandles::make_local(env, flags_ah());
1664 JVM_END
1665
1666 // Utility function used by jmm_GetVMGlobals. Returns false if flag type
1667 // can't be determined, true otherwise. If false is returned, then *global
1668 // will be incomplete and invalid.
1669 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) {
1670 Handle flag_name;
1671 if (name() == NULL) {
1672 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false);
1673 } else {
1674 flag_name = name;
1675 }
1676 global->name = (jstring)JNIHandles::make_local(env, flag_name());
1677
1678 if (flag->is_bool()) {
1679 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE;
1680 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN;
1681 } else if (flag->is_intx()) {
1682 global->value.j = (jlong)flag->get_intx();
1683 global->type = JMM_VMGLOBAL_TYPE_JLONG;
1684 } else if (flag->is_uintx()) {
1685 global->value.j = (jlong)flag->get_uintx();
1686 global->type = JMM_VMGLOBAL_TYPE_JLONG;
1687 } else if (flag->is_uint64_t()) {
1688 global->value.j = (jlong)flag->get_uint64_t();
1689 global->type = JMM_VMGLOBAL_TYPE_JLONG;
1690 } else if (flag->is_ccstr()) {
1691 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false);
1692 global->value.l = (jobject)JNIHandles::make_local(env, str());
1693 global->type = JMM_VMGLOBAL_TYPE_JSTRING;
1694 } else {
1695 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN;
1696 return false;
1697 }
1698
1699 global->writeable = flag->is_writeable();
1700 global->external = flag->is_external();
1701 switch (flag->origin) {
1702 case DEFAULT:
1703 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT;
1704 break;
1705 case COMMAND_LINE:
1706 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE;
1707 break;
1708 case ENVIRON_VAR:
1709 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR;
1710 break;
1711 case CONFIG_FILE:
1712 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE;
1713 break;
1714 case MANAGEMENT:
1715 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT;
1716 break;
1717 case ERGONOMIC:
1718 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC;
1719 break;
1720 default:
1721 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER;
1722 }
1723
1724 return true;
1725 }
1726
1727 // Fill globals array of count length with jmmVMGlobal entries
1728 // specified by names. If names == NULL, fill globals array
1729 // with all Flags. Return value is number of entries
1730 // created in globals.
1731 // If a Flag with a given name in an array element does not
1732 // exist, globals[i].name will be set to NULL.
1733 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env,
1734 jobjectArray names,
1735 jmmVMGlobal *globals,
1736 jint count))
1737
1738
1739 if (globals == NULL) {
1740 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1741 }
1742
1743 ResourceMark rm(THREAD);
1744
1745 if (names != NULL) {
1746 // return the requested globals
1747 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names));
1748 objArrayHandle names_ah(THREAD, ta);
1749 // Make sure we have a String array
1750 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass();
1751 if (element_klass != SystemDictionary::String_klass()) {
1752 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1753 "Array element type is not String class", 0);
1754 }
1755
1756 int names_length = names_ah->length();
1757 int num_entries = 0;
1758 for (int i = 0; i < names_length && i < count; i++) {
1759 oop s = names_ah->obj_at(i);
1760 if (s == NULL) {
1761 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1762 }
1763
1764 Handle sh(THREAD, s);
1765 char* str = java_lang_String::as_utf8_string(s);
1766 Flag* flag = Flag::find_flag(str, strlen(str));
1767 if (flag != NULL &&
1768 add_global_entry(env, sh, &globals[i], flag, THREAD)) {
1769 num_entries++;
1770 } else {
1771 globals[i].name = NULL;
1772 }
1773 }
1774 return num_entries;
1775 } else {
1776 // return all globals if names == NULL
1777
1778 // last flag entry is always NULL, so subtract 1
1779 int nFlags = (int) Flag::numFlags - 1;
1780 Handle null_h;
1781 int num_entries = 0;
1782 for (int i = 0; i < nFlags && num_entries < count; i++) {
1783 Flag* flag = &Flag::flags[i];
1784 // Exclude the locked (diagnostic, experimental) flags
1785 if ((flag->is_unlocked() || flag->is_unlocker()) &&
1786 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) {
1787 num_entries++;
1788 }
1789 }
1790 return num_entries;
1791 }
1792 JVM_END
1793
1794 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value))
1795 ResourceMark rm(THREAD);
1796
1797 oop fn = JNIHandles::resolve_external_guard(flag_name);
1798 if (fn == NULL) {
1799 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
1800 "The flag name cannot be null.");
1801 }
1802 char* name = java_lang_String::as_utf8_string(fn);
1803 Flag* flag = Flag::find_flag(name, strlen(name));
1804 if (flag == NULL) {
1805 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1806 "Flag does not exist.");
1807 }
1808 if (!flag->is_writeable()) {
1809 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1810 "This flag is not writeable.");
1811 }
1812
1813 bool succeed;
1814 if (flag->is_bool()) {
1815 bool bvalue = (new_value.z == JNI_TRUE ? true : false);
1816 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT);
1817 } else if (flag->is_intx()) {
1818 intx ivalue = (intx)new_value.j;
1819 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT);
1820 } else if (flag->is_uintx()) {
1821 uintx uvalue = (uintx)new_value.j;
1822 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT);
1823 } else if (flag->is_uint64_t()) {
1824 uint64_t uvalue = (uint64_t)new_value.j;
1825 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT);
1826 } else if (flag->is_ccstr()) {
1827 oop str = JNIHandles::resolve_external_guard(new_value.l);
1828 if (str == NULL) {
1829 THROW(vmSymbols::java_lang_NullPointerException());
1830 }
1831 ccstr svalue = java_lang_String::as_utf8_string(str);
1832 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT);
1833 }
1834 assert(succeed, "Setting flag should succeed");
1835 JVM_END
1836
1837 class ThreadTimesClosure: public ThreadClosure {
1838 private:
1839 objArrayHandle _names_strings;
1840 char **_names_chars;
1841 typeArrayHandle _times;
1842 int _names_len;
1843 int _times_len;
1844 int _count;
1845
1846 public:
1847 ThreadTimesClosure(objArrayHandle names, typeArrayHandle times);
1848 ~ThreadTimesClosure();
1849 virtual void do_thread(Thread* thread);
1850 void do_unlocked();
1851 int count() { return _count; }
1852 };
1853
1854 ThreadTimesClosure::ThreadTimesClosure(objArrayHandle names,
1855 typeArrayHandle times) {
1856 assert(names() != NULL, "names was NULL");
1857 assert(times() != NULL, "times was NULL");
1858 _names_strings = names;
1859 _names_len = names->length();
1860 _names_chars = NEW_C_HEAP_ARRAY(char*, _names_len, mtInternal);
1861 _times = times;
1862 _times_len = times->length();
1863 _count = 0;
1864 }
1865
1866 //
1867 // Called with Threads_lock held
1868 //
1869 void ThreadTimesClosure::do_thread(Thread* thread) {
1870 assert(thread != NULL, "thread was NULL");
1871
1872 // exclude externally visible JavaThreads
1873 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) {
1874 return;
1875 }
1876
1877 if (_count >= _names_len || _count >= _times_len) {
1878 // skip if the result array is not big enough
1879 return;
1880 }
1881
1882 EXCEPTION_MARK;
1883 ResourceMark rm(THREAD); // thread->name() uses ResourceArea
1884
1885 assert(thread->name() != NULL, "All threads should have a name");
1886 _names_chars[_count] = strdup(thread->name());
1887 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ?
1888 os::thread_cpu_time(thread) : -1);
1889 _count++;
1890 }
1891
1892 // Called without Threads_lock, we can allocate String objects.
1893 void ThreadTimesClosure::do_unlocked() {
1894
1895 EXCEPTION_MARK;
1896 for (int i = 0; i < _count; i++) {
1897 Handle s = java_lang_String::create_from_str(_names_chars[i], CHECK);
1898 _names_strings->obj_at_put(i, s());
1899 }
1900 }
1901
1902 ThreadTimesClosure::~ThreadTimesClosure() {
1903 for (int i = 0; i < _count; i++) {
1904 free(_names_chars[i]);
1905 }
1906 FREE_C_HEAP_ARRAY(char *, _names_chars, mtInternal);
1907 }
1908
1909 // Fills names with VM internal thread names and times with the corresponding
1910 // CPU times. If names or times is NULL, a NullPointerException is thrown.
1911 // If the element type of names is not String, an IllegalArgumentException is
1912 // thrown.
1913 // If an array is not large enough to hold all the entries, only the entries
1914 // that fit will be returned. Return value is the number of VM internal
1915 // threads entries.
1916 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env,
1917 jobjectArray names,
1918 jlongArray times))
1919 if (names == NULL || times == NULL) {
1920 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
1921 }
1922 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names));
1923 objArrayHandle names_ah(THREAD, na);
1924
1925 // Make sure we have a String array
1926 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass();
1927 if (element_klass != SystemDictionary::String_klass()) {
1928 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
1929 "Array element type is not String class", 0);
1930 }
1931
1932 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times));
1933 typeArrayHandle times_ah(THREAD, ta);
1934
1935 ThreadTimesClosure ttc(names_ah, times_ah);
1936 {
1937 MutexLockerEx ml(Threads_lock);
1938 Threads::threads_do(&ttc);
1939 }
1940 ttc.do_unlocked();
1941 return ttc.count();
1942 JVM_END
1943
1944 static Handle find_deadlocks(bool object_monitors_only, TRAPS) {
1945 ResourceMark rm(THREAD);
1946
1947 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */);
1948 VMThread::execute(&op);
1949
1950 DeadlockCycle* deadlocks = op.result();
1951 if (deadlocks == NULL) {
1952 // no deadlock found and return
1953 return Handle();
1954 }
1955
1956 int num_threads = 0;
1957 DeadlockCycle* cycle;
1958 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) {
1959 num_threads += cycle->num_threads();
1960 }
1961
1962 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH);
1963 objArrayHandle threads_ah(THREAD, r);
1964
1965 int index = 0;
1966 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) {
1967 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads();
1968 int len = deadlock_threads->length();
1969 for (int i = 0; i < len; i++) {
1970 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj());
1971 index++;
1972 }
1973 }
1974 return threads_ah;
1975 }
1976
1977 // Finds cycles of threads that are deadlocked involved in object monitors
1978 // and JSR-166 synchronizers.
1979 // Returns an array of Thread objects which are in deadlock, if any.
1980 // Otherwise, returns NULL.
1981 //
1982 // Input parameter:
1983 // object_monitors_only - if true, only check object monitors
1984 //
1985 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only))
1986 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0);
1987 return (jobjectArray) JNIHandles::make_local(env, result());
1988 JVM_END
1989
1990 // Finds cycles of threads that are deadlocked on monitor locks
1991 // Returns an array of Thread objects which are in deadlock, if any.
1992 // Otherwise, returns NULL.
1993 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env))
1994 Handle result = find_deadlocks(true, CHECK_0);
1995 return (jobjectArray) JNIHandles::make_local(env, result());
1996 JVM_END
1997
1998 // Gets the information about GC extension attributes including
1999 // the name of the attribute, its type, and a short description.
2000 //
2001 // Input parameters:
2002 // mgr - GC memory manager
2003 // info - caller allocated array of jmmExtAttributeInfo
2004 // count - number of elements of the info array
2005 //
2006 // Returns the number of GC extension attributes filled in the info array; or
2007 // -1 if info is not big enough
2008 //
2009 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count))
2010 // All GC memory managers have 1 attribute (number of GC threads)
2011 if (count == 0) {
2012 return 0;
2013 }
2014
2015 if (info == NULL) {
2016 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
2017 }
2018
2019 info[0].name = "GcThreadCount";
2020 info[0].type = 'I';
2021 info[0].description = "Number of GC threads";
2022 return 1;
2023 JVM_END
2024
2025 // verify the given array is an array of java/lang/management/MemoryUsage objects
2026 // of a given length and return the objArrayOop
2027 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) {
2028 if (array == NULL) {
2029 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
2030 }
2031
2032 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array));
2033 objArrayHandle array_h(THREAD, oa);
2034
2035 // array must be of the given length
2036 if (length != array_h->length()) {
2037 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
2038 "The length of the given MemoryUsage array does not match the number of memory pools.", 0);
2039 }
2040
2041 // check if the element of array is of type MemoryUsage class
2042 Klass* usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0);
2043 Klass* element_klass = ObjArrayKlass::cast(array_h->klass())->element_klass();
2044 if (element_klass != usage_klass) {
2045 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
2046 "The element type is not MemoryUsage class", 0);
2047 }
2048
2049 return array_h();
2050 }
2051
2052 // Gets the statistics of the last GC of a given GC memory manager.
2053 // Input parameters:
2054 // obj - GarbageCollectorMXBean object
2055 // gc_stat - caller allocated jmmGCStat where:
2056 // a. before_gc_usage - array of MemoryUsage objects
2057 // b. after_gc_usage - array of MemoryUsage objects
2058 // c. gc_ext_attributes_values_size is set to the
2059 // gc_ext_attribute_values array allocated
2060 // d. gc_ext_attribute_values is a caller allocated array of jvalue.
2061 //
2062 // On return,
2063 // gc_index == 0 indicates no GC statistics available
2064 //
2065 // before_gc_usage and after_gc_usage - filled with per memory pool
2066 // before and after GC usage in the same order as the memory pools
2067 // returned by GetMemoryPools for a given GC memory manager.
2068 // num_gc_ext_attributes indicates the number of elements in
2069 // the gc_ext_attribute_values array is filled; or
2070 // -1 if the gc_ext_attributes_values array is not big enough
2071 //
2072 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat))
2073 ResourceMark rm(THREAD);
2074
2075 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) {
2076 THROW(vmSymbols::java_lang_NullPointerException());
2077 }
2078
2079 // Get the GCMemoryManager
2080 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK);
2081
2082 // Make a copy of the last GC statistics
2083 // GC may occur while constructing the last GC information
2084 int num_pools = MemoryService::num_memory_pools();
2085 GCStatInfo stat(num_pools);
2086 if (mgr->get_last_gc_stat(&stat) == 0) {
2087 gc_stat->gc_index = 0;
2088 return;
2089 }
2090
2091 gc_stat->gc_index = stat.gc_index();
2092 gc_stat->start_time = Management::ticks_to_ms(stat.start_time());
2093 gc_stat->end_time = Management::ticks_to_ms(stat.end_time());
2094
2095 // Current implementation does not have GC extension attributes
2096 gc_stat->num_gc_ext_attributes = 0;
2097
2098 // Fill the arrays of MemoryUsage objects with before and after GC
2099 // per pool memory usage
2100 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc,
2101 num_pools,
2102 CHECK);
2103 objArrayHandle usage_before_gc_ah(THREAD, bu);
2104
2105 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc,
2106 num_pools,
2107 CHECK);
2108 objArrayHandle usage_after_gc_ah(THREAD, au);
2109
2110 for (int i = 0; i < num_pools; i++) {
2111 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK);
2112 Handle after_usage;
2113
2114 MemoryUsage u = stat.after_gc_usage_for_pool(i);
2115 if (u.max_size() == 0 && u.used() > 0) {
2116 // If max size == 0, this pool is a survivor space.
2117 // Set max size = -1 since the pools will be swapped after GC.
2118 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1);
2119 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK);
2120 } else {
2121 after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK);
2122 }
2123 usage_before_gc_ah->obj_at_put(i, before_usage());
2124 usage_after_gc_ah->obj_at_put(i, after_usage());
2125 }
2126
2127 if (gc_stat->gc_ext_attribute_values_size > 0) {
2128 // Current implementation only has 1 attribute (number of GC threads)
2129 // The type is 'I'
2130 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads();
2131 }
2132 JVM_END
2133
2134 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled))
2135 ResourceMark rm(THREAD);
2136 // Get the GCMemoryManager
2137 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK);
2138 mgr->set_notification_enabled(enabled?true:false);
2139 JVM_END
2140
2141 // Dump heap - Returns 0 if succeeds.
2142 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live))
2143 #if INCLUDE_SERVICES
2144 ResourceMark rm(THREAD);
2145 oop on = JNIHandles::resolve_external_guard(outputfile);
2146 if (on == NULL) {
2147 THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
2148 "Output file name cannot be null.", -1);
2149 }
2150 char* name = java_lang_String::as_platform_dependent_str(on, CHECK_(-1));
2151 if (name == NULL) {
2152 THROW_MSG_(vmSymbols::java_lang_NullPointerException(),
2153 "Output file name cannot be null.", -1);
2154 }
2155 HeapDumper dumper(live ? true : false);
2156 if (dumper.dump(name) != 0) {
2157 const char* errmsg = dumper.error_as_C_string();
2158 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1);
2159 }
2160 return 0;
2161 #else // INCLUDE_SERVICES
2162 return -1;
2163 #endif // INCLUDE_SERVICES
2164 JVM_END
2165
2166 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env))
2167 ResourceMark rm(THREAD);
2168 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(DCmd_Source_MBean);
2169 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(),
2170 dcmd_list->length(), CHECK_NULL);
2171 objArrayHandle cmd_array(THREAD, cmd_array_oop);
2172 for (int i = 0; i < dcmd_list->length(); i++) {
2173 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL);
2174 cmd_array->obj_at_put(i, cmd_name);
2175 }
2176 return (jobjectArray) JNIHandles::make_local(env, cmd_array());
2177 JVM_END
2178
2179 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds,
2180 dcmdInfo* infoArray))
2181 if (cmds == NULL || infoArray == NULL) {
2182 THROW(vmSymbols::java_lang_NullPointerException());
2183 }
2184
2185 ResourceMark rm(THREAD);
2186
2187 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds));
2188 objArrayHandle cmds_ah(THREAD, ca);
2189
2190 // Make sure we have a String array
2191 Klass* element_klass = ObjArrayKlass::cast(cmds_ah->klass())->element_klass();
2192 if (element_klass != SystemDictionary::String_klass()) {
2193 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2194 "Array element type is not String class");
2195 }
2196
2197 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(DCmd_Source_MBean);
2198
2199 int num_cmds = cmds_ah->length();
2200 for (int i = 0; i < num_cmds; i++) {
2201 oop cmd = cmds_ah->obj_at(i);
2202 if (cmd == NULL) {
2203 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2204 "Command name cannot be null.");
2205 }
2206 char* cmd_name = java_lang_String::as_utf8_string(cmd);
2207 if (cmd_name == NULL) {
2208 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2209 "Command name cannot be null.");
2210 }
2211 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name);
2212 if (pos == -1) {
2213 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2214 "Unknown diagnostic command");
2215 }
2216 DCmdInfo* info = info_list->at(pos);
2217 infoArray[i].name = info->name();
2218 infoArray[i].description = info->description();
2219 infoArray[i].impact = info->impact();
2220 JavaPermission p = info->permission();
2221 infoArray[i].permission_class = p._class;
2222 infoArray[i].permission_name = p._name;
2223 infoArray[i].permission_action = p._action;
2224 infoArray[i].num_arguments = info->num_arguments();
2225 infoArray[i].enabled = info->is_enabled();
2226 }
2227 JVM_END
2228
2229 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env,
2230 jstring command, dcmdArgInfo* infoArray))
2231 ResourceMark rm(THREAD);
2232 oop cmd = JNIHandles::resolve_external_guard(command);
2233 if (cmd == NULL) {
2234 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2235 "Command line cannot be null.");
2236 }
2237 char* cmd_name = java_lang_String::as_utf8_string(cmd);
2238 if (cmd_name == NULL) {
2239 THROW_MSG(vmSymbols::java_lang_NullPointerException(),
2240 "Command line content cannot be null.");
2241 }
2242 DCmd* dcmd = NULL;
2243 DCmdFactory*factory = DCmdFactory::factory(DCmd_Source_MBean, cmd_name,
2244 strlen(cmd_name));
2245 if (factory != NULL) {
2246 dcmd = factory->create_resource_instance(NULL);
2247 }
2248 if (dcmd == NULL) {
2249 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2250 "Unknown diagnostic command");
2251 }
2252 DCmdMark mark(dcmd);
2253 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array();
2254 if (array->length() == 0) {
2255 return;
2256 }
2257 for (int i = 0; i < array->length(); i++) {
2258 infoArray[i].name = array->at(i)->name();
2259 infoArray[i].description = array->at(i)->description();
2260 infoArray[i].type = array->at(i)->type();
2261 infoArray[i].default_string = array->at(i)->default_string();
2262 infoArray[i].mandatory = array->at(i)->is_mandatory();
2263 infoArray[i].option = array->at(i)->is_option();
2264 infoArray[i].multiple = array->at(i)->is_multiple();
2265 infoArray[i].position = array->at(i)->position();
2266 }
2267 return;
2268 JVM_END
2269
2270 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline))
2271 ResourceMark rm(THREAD);
2272 oop cmd = JNIHandles::resolve_external_guard(commandline);
2273 if (cmd == NULL) {
2274 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
2275 "Command line cannot be null.");
2276 }
2277 char* cmdline = java_lang_String::as_utf8_string(cmd);
2278 if (cmdline == NULL) {
2279 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
2280 "Command line content cannot be null.");
2281 }
2282 bufferedStream output;
2283 DCmd::parse_and_execute(DCmd_Source_MBean, &output, cmdline, ' ', CHECK_NULL);
2284 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL);
2285 return (jstring) JNIHandles::make_local(env, result);
2286 JVM_END
2287
2288 JVM_ENTRY(void, jmm_SetDiagnosticFrameworkNotificationEnabled(JNIEnv *env, jboolean enabled))
2289 DCmdFactory::set_jmx_notification_enabled(enabled?true:false);
2290 JVM_END
2291
2292 jlong Management::ticks_to_ms(jlong ticks) {
2293 assert(os::elapsed_frequency() > 0, "Must be non-zero");
2294 return (jlong)(((double)ticks / (double)os::elapsed_frequency())
2295 * (double)1000.0);
2296 }
2297
2298 const struct jmmInterface_1_ jmm_interface = {
2299 NULL,
2300 NULL,
2301 jmm_GetVersion,
2302 jmm_GetOptionalSupport,
2303 jmm_GetInputArguments,
2304 jmm_GetThreadInfo,
2305 jmm_GetInputArgumentArray,
2306 jmm_GetMemoryPools,
2307 jmm_GetMemoryManagers,
2308 jmm_GetMemoryPoolUsage,
2309 jmm_GetPeakMemoryPoolUsage,
2310 jmm_GetThreadAllocatedMemory,
2311 jmm_GetMemoryUsage,
2312 jmm_GetLongAttribute,
2313 jmm_GetBoolAttribute,
2314 jmm_SetBoolAttribute,
2315 jmm_GetLongAttributes,
2316 jmm_FindMonitorDeadlockedThreads,
2317 jmm_GetThreadCpuTime,
2318 jmm_GetVMGlobalNames,
2319 jmm_GetVMGlobals,
2320 jmm_GetInternalThreadTimes,
2321 jmm_ResetStatistic,
2322 jmm_SetPoolSensor,
2323 jmm_SetPoolThreshold,
2324 jmm_GetPoolCollectionUsage,
2325 jmm_GetGCExtAttributeInfo,
2326 jmm_GetLastGCStat,
2327 jmm_GetThreadCpuTimeWithKind,
2328 jmm_GetThreadCpuTimesWithKind,
2329 jmm_DumpHeap0,
2330 jmm_FindDeadlockedThreads,
2331 jmm_SetVMGlobal,
2332 NULL,
2333 jmm_DumpThreads,
2334 jmm_SetGCNotificationEnabled,
2335 jmm_GetDiagnosticCommands,
2336 jmm_GetDiagnosticCommandInfo,
2337 jmm_GetDiagnosticCommandArgumentsInfo,
2338 jmm_ExecuteDiagnosticCommand,
2339 jmm_SetDiagnosticFrameworkNotificationEnabled
2340 };
2341 #endif // INCLUDE_MANAGEMENT
2342
2343 void* Management::get_jmm_interface(int version) {
2344 #if INCLUDE_MANAGEMENT
2345 if (version == JMM_VERSION_1_0) {
2346 return (void*) &jmm_interface;
2347 }
2348 #endif // INCLUDE_MANAGEMENT
2349 return NULL;
2350 }