Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
author | coleenp |
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date | Thu, 27 Jan 2011 16:11:27 -0800 |
parents | b1a2afa37ec4 |
children | bf8517f4e4d0 55cc33cf55bc |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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/klassOop.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/oop.inline.hpp" | |
35 #include "runtime/arguments.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 "services/classLoadingService.hpp" | |
42 #include "services/heapDumper.hpp" | |
43 #include "services/lowMemoryDetector.hpp" | |
44 #include "services/management.hpp" | |
45 #include "services/memoryManager.hpp" | |
46 #include "services/memoryPool.hpp" | |
47 #include "services/memoryService.hpp" | |
48 #include "services/runtimeService.hpp" | |
49 #include "services/threadService.hpp" | |
0 | 50 |
51 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
52 PerfVariable* Management::_end_vm_creation_time = NULL; | |
53 PerfVariable* Management::_vm_init_done_time = NULL; | |
54 | |
55 klassOop Management::_sensor_klass = NULL; | |
56 klassOop Management::_threadInfo_klass = NULL; | |
57 klassOop Management::_memoryUsage_klass = NULL; | |
58 klassOop Management::_memoryPoolMXBean_klass = NULL; | |
59 klassOop Management::_memoryManagerMXBean_klass = NULL; | |
60 klassOop Management::_garbageCollectorMXBean_klass = NULL; | |
61 klassOop Management::_managementFactory_klass = NULL; | |
62 | |
63 jmmOptionalSupport Management::_optional_support = {0}; | |
64 TimeStamp Management::_stamp; | |
65 | |
66 void management_init() { | |
67 Management::init(); | |
68 ThreadService::init(); | |
69 RuntimeService::init(); | |
70 ClassLoadingService::init(); | |
71 } | |
72 | |
73 void Management::init() { | |
74 EXCEPTION_MARK; | |
75 | |
76 // These counters are for java.lang.management API support. | |
77 // They are created even if -XX:-UsePerfData is set and in | |
78 // that case, they will be allocated on C heap. | |
79 | |
80 _begin_vm_creation_time = | |
81 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
82 PerfData::U_None, CHECK); | |
83 | |
84 _end_vm_creation_time = | |
85 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
86 PerfData::U_None, CHECK); | |
87 | |
88 _vm_init_done_time = | |
89 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
90 PerfData::U_None, CHECK); | |
91 | |
92 // Initialize optional support | |
93 _optional_support.isLowMemoryDetectionSupported = 1; | |
94 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
95 _optional_support.isThreadContentionMonitoringSupported = 1; | |
96 | |
97 if (os::is_thread_cpu_time_supported()) { | |
98 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
99 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
100 } else { | |
101 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
102 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
103 } | |
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104 |
0 | 105 _optional_support.isBootClassPathSupported = 1; |
106 _optional_support.isObjectMonitorUsageSupported = 1; | |
107 #ifndef SERVICES_KERNEL | |
108 // This depends on the heap inspector | |
109 _optional_support.isSynchronizerUsageSupported = 1; | |
110 #endif // SERVICES_KERNEL | |
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111 _optional_support.isThreadAllocatedMemorySupported = 1; |
0 | 112 } |
113 | |
114 void Management::initialize(TRAPS) { | |
115 // Start the low memory detector thread | |
116 LowMemoryDetector::initialize(); | |
117 | |
118 if (ManagementServer) { | |
119 ResourceMark rm(THREAD); | |
120 HandleMark hm(THREAD); | |
121 | |
122 // Load and initialize the sun.management.Agent class | |
123 // invoke startAgent method to start the management server | |
124 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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125 klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 126 loader, |
127 Handle(), | |
128 true, | |
129 CHECK); | |
130 instanceKlassHandle ik (THREAD, k); | |
131 | |
132 JavaValue result(T_VOID); | |
133 JavaCalls::call_static(&result, | |
134 ik, | |
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135 vmSymbols::startAgent_name(), |
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136 vmSymbols::void_method_signature(), |
0 | 137 CHECK); |
138 } | |
139 } | |
140 | |
141 void Management::get_optional_support(jmmOptionalSupport* support) { | |
142 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
143 } | |
144 | |
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145 klassOop Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
0 | 146 klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
147 instanceKlassHandle ik (THREAD, k); | |
148 if (ik->should_be_initialized()) { | |
149 ik->initialize(CHECK_NULL); | |
150 } | |
151 return ik(); | |
152 } | |
153 | |
154 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
155 // if the performance counter is not initialized, | |
156 // then vm initialization failed; simply return. | |
157 if (_begin_vm_creation_time == NULL) return; | |
158 | |
159 _begin_vm_creation_time->set_value(begin); | |
160 _end_vm_creation_time->set_value(begin + duration); | |
161 PerfMemory::set_accessible(true); | |
162 } | |
163 | |
164 jlong Management::timestamp() { | |
165 TimeStamp t; | |
166 t.update(); | |
167 return t.ticks() - _stamp.ticks(); | |
168 } | |
169 | |
170 void Management::oops_do(OopClosure* f) { | |
171 MemoryService::oops_do(f); | |
172 ThreadService::oops_do(f); | |
173 | |
174 f->do_oop((oop*) &_sensor_klass); | |
175 f->do_oop((oop*) &_threadInfo_klass); | |
176 f->do_oop((oop*) &_memoryUsage_klass); | |
177 f->do_oop((oop*) &_memoryPoolMXBean_klass); | |
178 f->do_oop((oop*) &_memoryManagerMXBean_klass); | |
179 f->do_oop((oop*) &_garbageCollectorMXBean_klass); | |
180 f->do_oop((oop*) &_managementFactory_klass); | |
181 } | |
182 | |
183 klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { | |
184 if (_threadInfo_klass == NULL) { | |
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185 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 186 } |
187 return _threadInfo_klass; | |
188 } | |
189 | |
190 klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { | |
191 if (_memoryUsage_klass == NULL) { | |
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192 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 193 } |
194 return _memoryUsage_klass; | |
195 } | |
196 | |
197 klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { | |
198 if (_memoryPoolMXBean_klass == NULL) { | |
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199 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 200 } |
201 return _memoryPoolMXBean_klass; | |
202 } | |
203 | |
204 klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { | |
205 if (_memoryManagerMXBean_klass == NULL) { | |
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206 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 207 } |
208 return _memoryManagerMXBean_klass; | |
209 } | |
210 | |
211 klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { | |
212 if (_garbageCollectorMXBean_klass == NULL) { | |
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213 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 214 } |
215 return _garbageCollectorMXBean_klass; | |
216 } | |
217 | |
218 klassOop Management::sun_management_Sensor_klass(TRAPS) { | |
219 if (_sensor_klass == NULL) { | |
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220 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 221 } |
222 return _sensor_klass; | |
223 } | |
224 | |
225 klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { | |
226 if (_managementFactory_klass == NULL) { | |
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227 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 228 } |
229 return _managementFactory_klass; | |
230 } | |
231 | |
232 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { | |
233 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
234 | |
235 jlong contended_time; | |
236 jlong waited_time; | |
237 if (ThreadService::is_thread_monitoring_contention()) { | |
238 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
239 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
240 } else { | |
241 // set them to -1 if thread contention monitoring is disabled. | |
242 contended_time = max_julong; | |
243 waited_time = max_julong; | |
244 } | |
245 | |
246 int thread_status = snapshot->thread_status(); | |
247 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
248 if (snapshot->is_ext_suspended()) { | |
249 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
250 } | |
251 if (snapshot->is_in_native()) { | |
252 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
253 } | |
254 | |
255 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
256 Handle stacktrace_h; | |
257 if (st != NULL) { | |
258 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
259 } else { | |
260 stacktrace_h = Handle(); | |
261 } | |
262 | |
263 args->push_oop(snapshot_thread); | |
264 args->push_int(thread_status); | |
265 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
266 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
267 args->push_long(snapshot->contended_enter_count()); | |
268 args->push_long(contended_time); | |
269 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
270 args->push_long(waited_time); | |
271 args->push_oop(stacktrace_h); | |
272 } | |
273 | |
274 // Helper function to construct a ThreadInfo object | |
275 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
276 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
277 instanceKlassHandle ik (THREAD, k); | |
278 | |
279 JavaValue result(T_VOID); | |
280 JavaCallArguments args(14); | |
281 | |
282 // First allocate a ThreadObj object and | |
283 // push the receiver as the first argument | |
284 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
285 args.push_oop(element); | |
286 | |
287 // initialize the arguments for the ThreadInfo constructor | |
288 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
289 | |
290 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
291 JavaCalls::call_special(&result, | |
292 ik, | |
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293 vmSymbols::object_initializer_name(), |
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294 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 295 &args, |
296 CHECK_NULL); | |
297 | |
298 return (instanceOop) element(); | |
299 } | |
300 | |
301 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
302 objArrayHandle monitors_array, | |
303 typeArrayHandle depths_array, | |
304 objArrayHandle synchronizers_array, | |
305 TRAPS) { | |
306 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
307 instanceKlassHandle ik (THREAD, k); | |
308 | |
309 JavaValue result(T_VOID); | |
310 JavaCallArguments args(17); | |
311 | |
312 // First allocate a ThreadObj object and | |
313 // push the receiver as the first argument | |
314 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
315 args.push_oop(element); | |
316 | |
317 // initialize the arguments for the ThreadInfo constructor | |
318 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
319 | |
320 // push the locked monitors and synchronizers in the arguments | |
321 args.push_oop(monitors_array); | |
322 args.push_oop(depths_array); | |
323 args.push_oop(synchronizers_array); | |
324 | |
325 // Call ThreadInfo constructor with locked monitors and synchronizers | |
326 JavaCalls::call_special(&result, | |
327 ik, | |
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328 vmSymbols::object_initializer_name(), |
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329 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 330 &args, |
331 CHECK_NULL); | |
332 | |
333 return (instanceOop) element(); | |
334 } | |
335 | |
336 // Helper functions | |
337 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
338 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
339 | |
340 JavaThread* java_thread = NULL; | |
341 // Sequential search for now. Need to do better optimization later. | |
342 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
343 oop tobj = thread->threadObj(); | |
344 if (!thread->is_exiting() && | |
345 tobj != NULL && | |
346 thread_id == java_lang_Thread::thread_id(tobj)) { | |
347 java_thread = thread; | |
348 break; | |
349 } | |
350 } | |
351 return java_thread; | |
352 } | |
353 | |
354 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
355 if (mgr == NULL) { | |
356 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
357 } | |
358 oop mgr_obj = JNIHandles::resolve(mgr); | |
359 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
360 | |
361 klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); | |
362 if (!h->is_a(k)) { | |
363 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
364 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
365 NULL); | |
366 } | |
367 | |
368 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
369 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
370 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
371 "Invalid GC memory manager", | |
372 NULL); | |
373 } | |
374 return (GCMemoryManager*) gc; | |
375 } | |
376 | |
377 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
378 if (obj == NULL) { | |
379 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
380 } | |
381 | |
382 oop pool_obj = JNIHandles::resolve(obj); | |
383 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
384 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
385 | |
386 return MemoryService::get_memory_pool(ph); | |
387 } | |
388 | |
389 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
390 int num_threads = ids_ah->length(); | |
391 | |
392 // Validate input thread IDs | |
393 int i = 0; | |
394 for (i = 0; i < num_threads; i++) { | |
395 jlong tid = ids_ah->long_at(i); | |
396 if (tid <= 0) { | |
397 // throw exception if invalid thread id. | |
398 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
399 "Invalid thread ID entry"); | |
400 } | |
401 } | |
402 } | |
403 | |
404 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
405 // check if the element of infoArray is of type ThreadInfo class | |
406 klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); | |
407 klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); | |
408 if (element_klass != threadinfo_klass) { | |
409 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
410 "infoArray element type is not ThreadInfo class"); | |
411 } | |
412 } | |
413 | |
414 | |
415 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
416 if (obj == NULL) { | |
417 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
418 } | |
419 | |
420 oop mgr_obj = JNIHandles::resolve(obj); | |
421 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
422 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
423 | |
424 return MemoryService::get_memory_manager(mh); | |
425 } | |
426 | |
427 // Returns a version string and sets major and minor version if | |
428 // the input parameters are non-null. | |
429 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
430 return JMM_VERSION; | |
431 JVM_END | |
432 | |
433 // Gets the list of VM monitoring and management optional supports | |
434 // Returns 0 if succeeded; otherwise returns non-zero. | |
435 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
436 if (support == NULL) { | |
437 return -1; | |
438 } | |
439 Management::get_optional_support(support); | |
440 return 0; | |
441 JVM_END | |
442 | |
443 // Returns a java.lang.String object containing the input arguments to the VM. | |
444 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
445 ResourceMark rm(THREAD); | |
446 | |
447 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
448 return NULL; | |
449 } | |
450 | |
451 char** vm_flags = Arguments::jvm_flags_array(); | |
452 char** vm_args = Arguments::jvm_args_array(); | |
453 int num_flags = Arguments::num_jvm_flags(); | |
454 int num_args = Arguments::num_jvm_args(); | |
455 | |
456 size_t length = 1; // null terminator | |
457 int i; | |
458 for (i = 0; i < num_flags; i++) { | |
459 length += strlen(vm_flags[i]); | |
460 } | |
461 for (i = 0; i < num_args; i++) { | |
462 length += strlen(vm_args[i]); | |
463 } | |
464 // add a space between each argument | |
465 length += num_flags + num_args - 1; | |
466 | |
467 // Return the list of input arguments passed to the VM | |
468 // and preserve the order that the VM processes. | |
469 char* args = NEW_RESOURCE_ARRAY(char, length); | |
470 args[0] = '\0'; | |
471 // concatenate all jvm_flags | |
472 if (num_flags > 0) { | |
473 strcat(args, vm_flags[0]); | |
474 for (i = 1; i < num_flags; i++) { | |
475 strcat(args, " "); | |
476 strcat(args, vm_flags[i]); | |
477 } | |
478 } | |
479 | |
480 if (num_args > 0 && num_flags > 0) { | |
481 // append a space if args already contains one or more jvm_flags | |
482 strcat(args, " "); | |
483 } | |
484 | |
485 // concatenate all jvm_args | |
486 if (num_args > 0) { | |
487 strcat(args, vm_args[0]); | |
488 for (i = 1; i < num_args; i++) { | |
489 strcat(args, " "); | |
490 strcat(args, vm_args[i]); | |
491 } | |
492 } | |
493 | |
494 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
495 return JNIHandles::make_local(env, hargs()); | |
496 JVM_END | |
497 | |
498 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
499 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
500 ResourceMark rm(THREAD); | |
501 | |
502 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
503 return NULL; | |
504 } | |
505 | |
506 char** vm_flags = Arguments::jvm_flags_array(); | |
507 char** vm_args = Arguments::jvm_args_array(); | |
508 int num_flags = Arguments::num_jvm_flags(); | |
509 int num_args = Arguments::num_jvm_args(); | |
510 | |
1142 | 511 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 512 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
513 objArrayHandle result_h(THREAD, r); | |
514 | |
515 int index = 0; | |
516 for (int j = 0; j < num_flags; j++, index++) { | |
517 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
518 result_h->obj_at_put(index, h()); | |
519 } | |
520 for (int i = 0; i < num_args; i++, index++) { | |
521 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
522 result_h->obj_at_put(index, h()); | |
523 } | |
524 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
525 JVM_END | |
526 | |
527 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
528 // one for each memory pool if obj == null; otherwise returns | |
529 // an array of memory pools for a given memory manager if | |
530 // it is a valid memory manager. | |
531 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
532 ResourceMark rm(THREAD); | |
533 | |
534 int num_memory_pools; | |
535 MemoryManager* mgr = NULL; | |
536 if (obj == NULL) { | |
537 num_memory_pools = MemoryService::num_memory_pools(); | |
538 } else { | |
539 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
540 if (mgr == NULL) { | |
541 return NULL; | |
542 } | |
543 num_memory_pools = mgr->num_memory_pools(); | |
544 } | |
545 | |
546 // Allocate the resulting MemoryPoolMXBean[] object | |
547 klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); | |
548 instanceKlassHandle ik (THREAD, k); | |
549 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
550 objArrayHandle poolArray(THREAD, r); | |
551 | |
552 if (mgr == NULL) { | |
553 // Get all memory pools | |
554 for (int i = 0; i < num_memory_pools; i++) { | |
555 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
556 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
557 instanceHandle ph(THREAD, p); | |
558 poolArray->obj_at_put(i, ph()); | |
559 } | |
560 } else { | |
561 // Get memory pools managed by a given memory manager | |
562 for (int i = 0; i < num_memory_pools; i++) { | |
563 MemoryPool* pool = mgr->get_memory_pool(i); | |
564 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
565 instanceHandle ph(THREAD, p); | |
566 poolArray->obj_at_put(i, ph()); | |
567 } | |
568 } | |
569 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
570 JVM_END | |
571 | |
572 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
573 // one for each memory manager if obj == null; otherwise returns | |
574 // an array of memory managers for a given memory pool if | |
575 // it is a valid memory pool. | |
576 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
577 ResourceMark rm(THREAD); | |
578 | |
579 int num_mgrs; | |
580 MemoryPool* pool = NULL; | |
581 if (obj == NULL) { | |
582 num_mgrs = MemoryService::num_memory_managers(); | |
583 } else { | |
584 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
585 if (pool == NULL) { | |
586 return NULL; | |
587 } | |
588 num_mgrs = pool->num_memory_managers(); | |
589 } | |
590 | |
591 // Allocate the resulting MemoryManagerMXBean[] object | |
592 klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); | |
593 instanceKlassHandle ik (THREAD, k); | |
594 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
595 objArrayHandle mgrArray(THREAD, r); | |
596 | |
597 if (pool == NULL) { | |
598 // Get all memory managers | |
599 for (int i = 0; i < num_mgrs; i++) { | |
600 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
601 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
602 instanceHandle ph(THREAD, p); | |
603 mgrArray->obj_at_put(i, ph()); | |
604 } | |
605 } else { | |
606 // Get memory managers for a given memory pool | |
607 for (int i = 0; i < num_mgrs; i++) { | |
608 MemoryManager* mgr = pool->get_memory_manager(i); | |
609 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
610 instanceHandle ph(THREAD, p); | |
611 mgrArray->obj_at_put(i, ph()); | |
612 } | |
613 } | |
614 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
615 JVM_END | |
616 | |
617 | |
618 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
619 // of a given memory pool. | |
620 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
621 ResourceMark rm(THREAD); | |
622 | |
623 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
624 if (pool != NULL) { | |
625 MemoryUsage usage = pool->get_memory_usage(); | |
626 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
627 return JNIHandles::make_local(env, h()); | |
628 } else { | |
629 return NULL; | |
630 } | |
631 JVM_END | |
632 | |
633 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
634 // of a given memory pool. | |
635 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
636 ResourceMark rm(THREAD); | |
637 | |
638 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
639 if (pool != NULL) { | |
640 MemoryUsage usage = pool->get_peak_memory_usage(); | |
641 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
642 return JNIHandles::make_local(env, h()); | |
643 } else { | |
644 return NULL; | |
645 } | |
646 JVM_END | |
647 | |
648 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
649 // of a given memory pool after most recent GC. | |
650 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
651 ResourceMark rm(THREAD); | |
652 | |
653 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
654 if (pool != NULL && pool->is_collected_pool()) { | |
655 MemoryUsage usage = pool->get_last_collection_usage(); | |
656 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
657 return JNIHandles::make_local(env, h()); | |
658 } else { | |
659 return NULL; | |
660 } | |
661 JVM_END | |
662 | |
663 // Sets the memory pool sensor for a threshold type | |
664 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
665 if (obj == NULL || sensorObj == NULL) { | |
666 THROW(vmSymbols::java_lang_NullPointerException()); | |
667 } | |
668 | |
669 klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); | |
670 oop s = JNIHandles::resolve(sensorObj); | |
671 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
672 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
673 if (!sensor_h->is_a(sensor_klass)) { | |
674 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
675 "Sensor is not an instance of sun.management.Sensor class"); | |
676 } | |
677 | |
678 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
679 assert(mpool != NULL, "MemoryPool should exist"); | |
680 | |
681 switch (type) { | |
682 case JMM_USAGE_THRESHOLD_HIGH: | |
683 case JMM_USAGE_THRESHOLD_LOW: | |
684 // have only one sensor for threshold high and low | |
685 mpool->set_usage_sensor_obj(sensor_h); | |
686 break; | |
687 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
688 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
689 // have only one sensor for threshold high and low | |
690 mpool->set_gc_usage_sensor_obj(sensor_h); | |
691 break; | |
692 default: | |
693 assert(false, "Unrecognized type"); | |
694 } | |
695 | |
696 JVM_END | |
697 | |
698 | |
699 // Sets the threshold of a given memory pool. | |
700 // Returns the previous threshold. | |
701 // | |
702 // Input parameters: | |
703 // pool - the MemoryPoolMXBean object | |
704 // type - threshold type | |
705 // threshold - the new threshold (must not be negative) | |
706 // | |
707 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
708 if (threshold < 0) { | |
709 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
710 "Invalid threshold value", | |
711 -1); | |
712 } | |
713 | |
489
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714 if ((size_t)threshold > max_uintx) { |
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715 stringStream st; |
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716 st.print("Invalid valid threshold value. Threshold value (" UINT64_FORMAT ") > max value of size_t (" SIZE_FORMAT ")", (size_t)threshold, max_uintx); |
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717 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 718 } |
719 | |
720 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
721 assert(pool != NULL, "MemoryPool should exist"); | |
722 | |
723 jlong prev = 0; | |
724 switch (type) { | |
725 case JMM_USAGE_THRESHOLD_HIGH: | |
726 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
727 return -1; | |
728 } | |
729 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
730 break; | |
731 | |
732 case JMM_USAGE_THRESHOLD_LOW: | |
733 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
734 return -1; | |
735 } | |
736 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
737 break; | |
738 | |
739 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
740 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
741 return -1; | |
742 } | |
743 // return and the new threshold is effective for the next GC | |
744 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
745 | |
746 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
747 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
748 return -1; | |
749 } | |
750 // return and the new threshold is effective for the next GC | |
751 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
752 | |
753 default: | |
754 assert(false, "Unrecognized type"); | |
755 return -1; | |
756 } | |
757 | |
758 // When the threshold is changed, reevaluate if the low memory | |
759 // detection is enabled. | |
760 if (prev != threshold) { | |
761 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
762 LowMemoryDetector::detect_low_memory(pool); | |
763 } | |
764 return prev; | |
765 JVM_END | |
766 | |
2100
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767 // Gets an array containing the amount of memory allocated on the Java |
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768 // heap for a set of threads (in bytes). Each element of the array is |
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769 // the amount of memory allocated for the thread ID specified in the |
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770 // corresponding entry in the given array of thread IDs; or -1 if the |
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771 // thread does not exist or has terminated. |
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772 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
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773 jlongArray sizeArray)) |
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774 // Check if threads is null |
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775 if (ids == NULL || sizeArray == NULL) { |
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776 THROW(vmSymbols::java_lang_NullPointerException()); |
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777 } |
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778 |
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779 ResourceMark rm(THREAD); |
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780 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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781 typeArrayHandle ids_ah(THREAD, ta); |
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782 |
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783 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
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784 typeArrayHandle sizeArray_h(THREAD, sa); |
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785 |
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786 // validate the thread id array |
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787 validate_thread_id_array(ids_ah, CHECK); |
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788 |
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789 // sizeArray must be of the same length as the given array of thread IDs |
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790 int num_threads = ids_ah->length(); |
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791 if (num_threads != sizeArray_h->length()) { |
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792 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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793 "The length of the given long array does not match the length of " |
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794 "the given array of thread IDs"); |
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795 } |
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796 |
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797 MutexLockerEx ml(Threads_lock); |
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798 for (int i = 0; i < num_threads; i++) { |
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799 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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800 if (java_thread != NULL) { |
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801 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
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802 } |
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803 } |
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804 JVM_END |
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805 |
0 | 806 // Returns a java/lang/management/MemoryUsage object representing |
807 // the memory usage for the heap or non-heap memory. | |
808 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
809 ResourceMark rm(THREAD); | |
810 | |
811 // Calculate the memory usage | |
812 size_t total_init = 0; | |
813 size_t total_used = 0; | |
814 size_t total_committed = 0; | |
815 size_t total_max = 0; | |
816 bool has_undefined_init_size = false; | |
817 bool has_undefined_max_size = false; | |
818 | |
819 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
820 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
821 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
822 MemoryUsage u = pool->get_memory_usage(); | |
823 total_used += u.used(); | |
824 total_committed += u.committed(); | |
825 | |
826 // if any one of the memory pool has undefined init_size or max_size, | |
827 // set it to -1 | |
828 if (u.init_size() == (size_t)-1) { | |
829 has_undefined_init_size = true; | |
830 } | |
831 if (!has_undefined_init_size) { | |
832 total_init += u.init_size(); | |
833 } | |
834 | |
835 if (u.max_size() == (size_t)-1) { | |
836 has_undefined_max_size = true; | |
837 } | |
838 if (!has_undefined_max_size) { | |
839 total_max += u.max_size(); | |
840 } | |
841 } | |
842 } | |
843 | |
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844 // In our current implementation, we make sure that all non-heap |
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845 // pools have defined init and max sizes. Heap pools do not matter, |
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846 // as we never use total_init and total_max for them. |
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847 assert(heap || !has_undefined_init_size, "Undefined init size"); |
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848 assert(heap || !has_undefined_max_size, "Undefined max size"); |
0 | 849 |
1064 | 850 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 851 total_used, |
852 total_committed, | |
853 (heap ? Universe::heap()->max_capacity() : total_max)); | |
854 | |
855 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
856 return JNIHandles::make_local(env, obj()); | |
857 JVM_END | |
858 | |
859 // Returns the boolean value of a given attribute. | |
860 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
861 switch (att) { | |
862 case JMM_VERBOSE_GC: | |
863 return MemoryService::get_verbose(); | |
864 case JMM_VERBOSE_CLASS: | |
865 return ClassLoadingService::get_verbose(); | |
866 case JMM_THREAD_CONTENTION_MONITORING: | |
867 return ThreadService::is_thread_monitoring_contention(); | |
868 case JMM_THREAD_CPU_TIME: | |
869 return ThreadService::is_thread_cpu_time_enabled(); | |
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870 case JMM_THREAD_ALLOCATED_MEMORY: |
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871 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 872 default: |
873 assert(0, "Unrecognized attribute"); | |
874 return false; | |
875 } | |
876 JVM_END | |
877 | |
878 // Sets the given boolean attribute and returns the previous value. | |
879 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
880 switch (att) { | |
881 case JMM_VERBOSE_GC: | |
882 return MemoryService::set_verbose(flag != 0); | |
883 case JMM_VERBOSE_CLASS: | |
884 return ClassLoadingService::set_verbose(flag != 0); | |
885 case JMM_THREAD_CONTENTION_MONITORING: | |
886 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
887 case JMM_THREAD_CPU_TIME: | |
888 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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889 case JMM_THREAD_ALLOCATED_MEMORY: |
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890 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 891 default: |
892 assert(0, "Unrecognized attribute"); | |
893 return false; | |
894 } | |
895 JVM_END | |
896 | |
897 | |
898 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
899 switch (att) { | |
900 case JMM_GC_TIME_MS: | |
901 return mgr->gc_time_ms(); | |
902 | |
903 case JMM_GC_COUNT: | |
904 return mgr->gc_count(); | |
905 | |
906 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
907 // current implementation only has 1 ext attribute | |
908 return 1; | |
909 | |
910 default: | |
911 assert(0, "Unrecognized GC attribute"); | |
912 return -1; | |
913 } | |
914 } | |
915 | |
916 class VmThreadCountClosure: public ThreadClosure { | |
917 private: | |
918 int _count; | |
919 public: | |
920 VmThreadCountClosure() : _count(0) {}; | |
921 void do_thread(Thread* thread); | |
922 int count() { return _count; } | |
923 }; | |
924 | |
925 void VmThreadCountClosure::do_thread(Thread* thread) { | |
926 // exclude externally visible JavaThreads | |
927 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
928 return; | |
929 } | |
930 | |
931 _count++; | |
932 } | |
933 | |
934 static jint get_vm_thread_count() { | |
935 VmThreadCountClosure vmtcc; | |
936 { | |
937 MutexLockerEx ml(Threads_lock); | |
938 Threads::threads_do(&vmtcc); | |
939 } | |
940 | |
941 return vmtcc.count(); | |
942 } | |
943 | |
944 static jint get_num_flags() { | |
945 // last flag entry is always NULL, so subtract 1 | |
946 int nFlags = (int) Flag::numFlags - 1; | |
947 int count = 0; | |
948 for (int i = 0; i < nFlags; i++) { | |
949 Flag* flag = &Flag::flags[i]; | |
350 | 950 // Exclude the locked (diagnostic, experimental) flags |
0 | 951 if (flag->is_unlocked() || flag->is_unlocker()) { |
952 count++; | |
953 } | |
954 } | |
955 return count; | |
956 } | |
957 | |
958 static jlong get_long_attribute(jmmLongAttribute att) { | |
959 switch (att) { | |
960 case JMM_CLASS_LOADED_COUNT: | |
961 return ClassLoadingService::loaded_class_count(); | |
962 | |
963 case JMM_CLASS_UNLOADED_COUNT: | |
964 return ClassLoadingService::unloaded_class_count(); | |
965 | |
966 case JMM_THREAD_TOTAL_COUNT: | |
967 return ThreadService::get_total_thread_count(); | |
968 | |
969 case JMM_THREAD_LIVE_COUNT: | |
970 return ThreadService::get_live_thread_count(); | |
971 | |
972 case JMM_THREAD_PEAK_COUNT: | |
973 return ThreadService::get_peak_thread_count(); | |
974 | |
975 case JMM_THREAD_DAEMON_COUNT: | |
976 return ThreadService::get_daemon_thread_count(); | |
977 | |
978 case JMM_JVM_INIT_DONE_TIME_MS: | |
979 return Management::vm_init_done_time(); | |
980 | |
981 case JMM_COMPILE_TOTAL_TIME_MS: | |
982 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
983 | |
984 case JMM_OS_PROCESS_ID: | |
985 return os::current_process_id(); | |
986 | |
987 // Hotspot-specific counters | |
988 case JMM_CLASS_LOADED_BYTES: | |
989 return ClassLoadingService::loaded_class_bytes(); | |
990 | |
991 case JMM_CLASS_UNLOADED_BYTES: | |
992 return ClassLoadingService::unloaded_class_bytes(); | |
993 | |
994 case JMM_SHARED_CLASS_LOADED_COUNT: | |
995 return ClassLoadingService::loaded_shared_class_count(); | |
996 | |
997 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
998 return ClassLoadingService::unloaded_shared_class_count(); | |
999 | |
1000 | |
1001 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1002 return ClassLoadingService::loaded_shared_class_bytes(); | |
1003 | |
1004 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1005 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1006 | |
1007 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1008 return ClassLoader::classloader_time_ms(); | |
1009 | |
1010 case JMM_VM_GLOBAL_COUNT: | |
1011 return get_num_flags(); | |
1012 | |
1013 case JMM_SAFEPOINT_COUNT: | |
1014 return RuntimeService::safepoint_count(); | |
1015 | |
1016 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1017 return RuntimeService::safepoint_sync_time_ms(); | |
1018 | |
1019 case JMM_TOTAL_STOPPED_TIME_MS: | |
1020 return RuntimeService::safepoint_time_ms(); | |
1021 | |
1022 case JMM_TOTAL_APP_TIME_MS: | |
1023 return RuntimeService::application_time_ms(); | |
1024 | |
1025 case JMM_VM_THREAD_COUNT: | |
1026 return get_vm_thread_count(); | |
1027 | |
1028 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1029 return ClassLoader::class_init_count(); | |
1030 | |
1031 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1032 return ClassLoader::class_init_time_ms(); | |
1033 | |
1034 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1035 return ClassLoader::class_verify_time_ms(); | |
1036 | |
1037 case JMM_METHOD_DATA_SIZE_BYTES: | |
1038 return ClassLoadingService::class_method_data_size(); | |
1039 | |
1040 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1041 return os::physical_memory(); | |
1042 | |
1043 default: | |
1044 return -1; | |
1045 } | |
1046 } | |
1047 | |
1048 | |
1049 // Returns the long value of a given attribute. | |
1050 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1051 if (obj == NULL) { | |
1052 return get_long_attribute(att); | |
1053 } else { | |
1054 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1055 if (mgr != NULL) { | |
1056 return get_gc_attribute(mgr, att); | |
1057 } | |
1058 } | |
1059 return -1; | |
1060 JVM_END | |
1061 | |
1062 // Gets the value of all attributes specified in the given array | |
1063 // and sets the value in the result array. | |
1064 // Returns the number of attributes found. | |
1065 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1066 jobject obj, | |
1067 jmmLongAttribute* atts, | |
1068 jint count, | |
1069 jlong* result)) | |
1070 | |
1071 int num_atts = 0; | |
1072 if (obj == NULL) { | |
1073 for (int i = 0; i < count; i++) { | |
1074 result[i] = get_long_attribute(atts[i]); | |
1075 if (result[i] != -1) { | |
1076 num_atts++; | |
1077 } | |
1078 } | |
1079 } else { | |
1080 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1081 for (int i = 0; i < count; i++) { | |
1082 result[i] = get_gc_attribute(mgr, atts[i]); | |
1083 if (result[i] != -1) { | |
1084 num_atts++; | |
1085 } | |
1086 } | |
1087 } | |
1088 return num_atts; | |
1089 JVM_END | |
1090 | |
1091 // Helper function to do thread dump for a specific list of threads | |
1092 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1093 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1094 int num_threads, | |
1095 int max_depth, | |
1096 bool with_locked_monitors, | |
1097 bool with_locked_synchronizers, | |
1098 TRAPS) { | |
1099 | |
1100 // First get an array of threadObj handles. | |
1101 // A JavaThread may terminate before we get the stack trace. | |
1102 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1103 { | |
1104 MutexLockerEx ml(Threads_lock); | |
1105 for (int i = 0; i < num_threads; i++) { | |
1106 jlong tid = ids_ah->long_at(i); | |
1107 JavaThread* jt = find_java_thread_from_id(tid); | |
1108 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
1109 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1110 thread_handle_array->append(threadObj_h); | |
1111 } | |
1112 } | |
1113 | |
1114 // Obtain thread dumps and thread snapshot information | |
1115 VM_ThreadDump op(dump_result, | |
1116 thread_handle_array, | |
1117 num_threads, | |
1118 max_depth, /* stack depth */ | |
1119 with_locked_monitors, | |
1120 with_locked_synchronizers); | |
1121 VMThread::execute(&op); | |
1122 } | |
1123 | |
1124 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1125 // for the thread ID specified in the corresponding entry in | |
1126 // the given array of thread IDs; or NULL if the thread does not exist | |
1127 // or has terminated. | |
1128 // | |
1129 // Input parameters: | |
1130 // ids - array of thread IDs | |
1131 // maxDepth - the maximum depth of stack traces to be dumped: | |
1132 // maxDepth == -1 requests to dump entire stack trace. | |
1133 // maxDepth == 0 requests no stack trace. | |
1134 // infoArray - array of ThreadInfo objects | |
1135 // | |
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1136 // QQQ - Why does this method return a value instead of void? |
0 | 1137 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1138 // Check if threads is null | |
1139 if (ids == NULL || infoArray == NULL) { | |
1140 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1141 } | |
1142 | |
1143 if (maxDepth < -1) { | |
1144 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1145 "Invalid maxDepth", -1); | |
1146 } | |
1147 | |
1148 ResourceMark rm(THREAD); | |
1149 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1150 typeArrayHandle ids_ah(THREAD, ta); | |
1151 | |
1152 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1153 objArrayOop oa = objArrayOop(infoArray_obj); | |
1154 objArrayHandle infoArray_h(THREAD, oa); | |
1155 | |
1156 // validate the thread id array | |
1157 validate_thread_id_array(ids_ah, CHECK_0); | |
1158 | |
1159 // validate the ThreadInfo[] parameters | |
1160 validate_thread_info_array(infoArray_h, CHECK_0); | |
1161 | |
1162 // infoArray must be of the same length as the given array of thread IDs | |
1163 int num_threads = ids_ah->length(); | |
1164 if (num_threads != infoArray_h->length()) { | |
1165 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1166 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1167 } | |
1168 | |
1169 if (JDK_Version::is_gte_jdk16x_version()) { | |
1170 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1171 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1172 } | |
1173 | |
1174 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1175 // GC may occur after the thread snapshots are taken but before | |
1176 // this function returns. The threadObj and other oops kept | |
1177 // in the ThreadSnapshot are marked and adjusted during GC. | |
1178 ThreadDumpResult dump_result(num_threads); | |
1179 | |
1180 if (maxDepth == 0) { | |
1181 // no stack trace dumped - do not need to stop the world | |
1182 { | |
1183 MutexLockerEx ml(Threads_lock); | |
1184 for (int i = 0; i < num_threads; i++) { | |
1185 jlong tid = ids_ah->long_at(i); | |
1186 JavaThread* jt = find_java_thread_from_id(tid); | |
1187 ThreadSnapshot* ts; | |
1188 if (jt == NULL) { | |
1189 // if the thread does not exist or now it is terminated, | |
1190 // create dummy snapshot | |
1191 ts = new ThreadSnapshot(); | |
1192 } else { | |
1193 ts = new ThreadSnapshot(jt); | |
1194 } | |
1195 dump_result.add_thread_snapshot(ts); | |
1196 } | |
1197 } | |
1198 } else { | |
1199 // obtain thread dump with the specific list of threads with stack trace | |
1200 do_thread_dump(&dump_result, | |
1201 ids_ah, | |
1202 num_threads, | |
1203 maxDepth, | |
1204 false, /* no locked monitor */ | |
1205 false, /* no locked synchronizers */ | |
1206 CHECK_0); | |
1207 } | |
1208 | |
1209 int num_snapshots = dump_result.num_snapshots(); | |
1210 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1211 int index = 0; | |
1212 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1213 // For each thread, create an java/lang/management/ThreadInfo object | |
1214 // and fill with the thread information | |
1215 | |
1216 if (ts->threadObj() == NULL) { | |
1217 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1218 infoArray_h->obj_at_put(index, NULL); | |
1219 continue; | |
1220 } | |
1221 | |
1222 // Create java.lang.management.ThreadInfo object | |
1223 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1224 infoArray_h->obj_at_put(index, info_obj); | |
1225 } | |
1226 return 0; | |
1227 JVM_END | |
1228 | |
1229 // Dump thread info for the specified threads. | |
1230 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1231 // for the thread ID specified in the corresponding entry in | |
1232 // the given array of thread IDs; or NULL if the thread does not exist | |
1233 // or has terminated. | |
1234 // | |
1235 // Input parameter: | |
1236 // ids - array of thread IDs; NULL indicates all live threads | |
1237 // locked_monitors - if true, dump locked object monitors | |
1238 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1239 // | |
1240 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1241 ResourceMark rm(THREAD); | |
1242 | |
1243 if (JDK_Version::is_gte_jdk16x_version()) { | |
1244 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1245 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1246 } | |
1247 | |
1248 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1249 int num_threads = (ta != NULL ? ta->length() : 0); | |
1250 typeArrayHandle ids_ah(THREAD, ta); | |
1251 | |
1252 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1253 | |
1254 if (ids_ah() != NULL) { | |
1255 | |
1256 // validate the thread id array | |
1257 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1258 | |
1259 // obtain thread dump of a specific list of threads | |
1260 do_thread_dump(&dump_result, | |
1261 ids_ah, | |
1262 num_threads, | |
1263 -1, /* entire stack */ | |
1264 (locked_monitors ? true : false), /* with locked monitors */ | |
1265 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1266 CHECK_NULL); | |
1267 } else { | |
1268 // obtain thread dump of all threads | |
1269 VM_ThreadDump op(&dump_result, | |
1270 -1, /* entire stack */ | |
1271 (locked_monitors ? true : false), /* with locked monitors */ | |
1272 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1273 VMThread::execute(&op); | |
1274 } | |
1275 | |
1276 int num_snapshots = dump_result.num_snapshots(); | |
1277 | |
1278 // create the result ThreadInfo[] object | |
1279 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
1280 instanceKlassHandle ik (THREAD, k); | |
1281 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1282 objArrayHandle result_h(THREAD, r); | |
1283 | |
1284 int index = 0; | |
1285 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1286 if (ts->threadObj() == NULL) { | |
1287 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1288 result_h->obj_at_put(index, NULL); | |
1289 continue; | |
1290 } | |
1291 | |
1292 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1293 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1294 | |
1295 // Create Object[] filled with locked monitors | |
1296 // Create int[] filled with the stack depth where a monitor was locked | |
1297 int num_frames = stacktrace->get_stack_depth(); | |
1298 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1299 | |
1300 // Count the total number of locked monitors | |
1301 for (int i = 0; i < num_frames; i++) { | |
1302 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1303 num_locked_monitors += frame->num_locked_monitors(); | |
1304 } | |
1305 | |
1306 objArrayHandle monitors_array; | |
1307 typeArrayHandle depths_array; | |
1308 objArrayHandle synchronizers_array; | |
1309 | |
1310 if (locked_monitors) { | |
1311 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1312 // where the thread locked it | |
1313 objArrayOop array = oopFactory::new_system_objArray(num_locked_monitors, CHECK_NULL); | |
1314 objArrayHandle mh(THREAD, array); | |
1315 monitors_array = mh; | |
1316 | |
1317 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1318 typeArrayHandle dh(THREAD, tarray); | |
1319 depths_array = dh; | |
1320 | |
1321 int count = 0; | |
1322 int j = 0; | |
1323 for (int depth = 0; depth < num_frames; depth++) { | |
1324 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1325 int len = frame->num_locked_monitors(); | |
1326 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1327 for (j = 0; j < len; j++) { | |
1328 oop monitor = locked_monitors->at(j); | |
1329 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1330 monitors_array->obj_at_put(count, monitor); | |
1331 depths_array->int_at_put(count, depth); | |
1332 count++; | |
1333 } | |
1334 } | |
1335 | |
1336 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1337 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1338 oop object = jni_locked_monitors->at(j); | |
1339 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1340 monitors_array->obj_at_put(count, object); | |
1341 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1342 depths_array->int_at_put(count, -1); | |
1343 count++; | |
1344 } | |
1345 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1346 } | |
1347 | |
1348 if (locked_synchronizers) { | |
1349 // Create Object[] filled with locked JSR-166 synchronizers | |
1350 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1351 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1352 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1353 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1354 | |
1355 objArrayOop array = oopFactory::new_system_objArray(num_locked_synchronizers, CHECK_NULL); | |
1356 objArrayHandle sh(THREAD, array); | |
1357 synchronizers_array = sh; | |
1358 | |
1359 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1360 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1361 } | |
1362 } | |
1363 | |
1364 // Create java.lang.management.ThreadInfo object | |
1365 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1366 monitors_array, | |
1367 depths_array, | |
1368 synchronizers_array, | |
1369 CHECK_NULL); | |
1370 result_h->obj_at_put(index, info_obj); | |
1371 } | |
1372 | |
1373 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1374 JVM_END | |
1375 | |
1376 // Returns an array of Class objects. | |
1377 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1378 ResourceMark rm(THREAD); | |
1379 | |
1380 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1381 | |
1382 int num_classes = lce.num_loaded_classes(); | |
1142 | 1383 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1384 objArrayHandle classes_ah(THREAD, r); |
1385 | |
1386 for (int i = 0; i < num_classes; i++) { | |
1387 KlassHandle kh = lce.get_klass(i); | |
1388 oop mirror = Klass::cast(kh())->java_mirror(); | |
1389 classes_ah->obj_at_put(i, mirror); | |
1390 } | |
1391 | |
1392 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1393 JVM_END | |
1394 | |
1395 // Reset statistic. Return true if the requested statistic is reset. | |
1396 // Otherwise, return false. | |
1397 // | |
1398 // Input parameters: | |
1399 // obj - specify which instance the statistic associated with to be reset | |
1400 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1401 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1402 // type - the type of statistic to be reset | |
1403 // | |
1404 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1405 ResourceMark rm(THREAD); | |
1406 | |
1407 switch (type) { | |
1408 case JMM_STAT_PEAK_THREAD_COUNT: | |
1409 ThreadService::reset_peak_thread_count(); | |
1410 return true; | |
1411 | |
1412 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1413 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1414 jlong tid = obj.j; | |
1415 if (tid < 0) { | |
1416 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1417 } | |
1418 | |
1419 // Look for the JavaThread of this given tid | |
1420 MutexLockerEx ml(Threads_lock); | |
1421 if (tid == 0) { | |
1422 // reset contention statistics for all threads if tid == 0 | |
1423 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1424 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1425 ThreadService::reset_contention_count_stat(java_thread); | |
1426 } else { | |
1427 ThreadService::reset_contention_time_stat(java_thread); | |
1428 } | |
1429 } | |
1430 } else { | |
1431 // reset contention statistics for a given thread | |
1432 JavaThread* java_thread = find_java_thread_from_id(tid); | |
1433 if (java_thread == NULL) { | |
1434 return false; | |
1435 } | |
1436 | |
1437 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1438 ThreadService::reset_contention_count_stat(java_thread); | |
1439 } else { | |
1440 ThreadService::reset_contention_time_stat(java_thread); | |
1441 } | |
1442 } | |
1443 return true; | |
1444 break; | |
1445 } | |
1446 case JMM_STAT_PEAK_POOL_USAGE: { | |
1447 jobject o = obj.l; | |
1448 if (o == NULL) { | |
1449 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1450 } | |
1451 | |
1452 oop pool_obj = JNIHandles::resolve(o); | |
1453 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1454 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1455 | |
1456 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1457 if (pool != NULL) { | |
1458 pool->reset_peak_memory_usage(); | |
1459 return true; | |
1460 } | |
1461 break; | |
1462 } | |
1463 case JMM_STAT_GC_STAT: { | |
1464 jobject o = obj.l; | |
1465 if (o == NULL) { | |
1466 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1467 } | |
1468 | |
1469 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1470 if (mgr != NULL) { | |
1471 mgr->reset_gc_stat(); | |
1472 return true; | |
1473 } | |
1474 break; | |
1475 } | |
1476 default: | |
1477 assert(0, "Unknown Statistic Type"); | |
1478 } | |
1479 return false; | |
1480 JVM_END | |
1481 | |
1482 // Returns the fast estimate of CPU time consumed by | |
1483 // a given thread (in nanoseconds). | |
1484 // If thread_id == 0, return CPU time for the current thread. | |
1485 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1486 if (!os::is_thread_cpu_time_supported()) { | |
1487 return -1; | |
1488 } | |
1489 | |
1490 if (thread_id < 0) { | |
1491 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1492 "Invalid thread ID", -1); | |
1493 } | |
1494 | |
1495 JavaThread* java_thread = NULL; | |
1496 if (thread_id == 0) { | |
1497 // current thread | |
1498 return os::current_thread_cpu_time(); | |
1499 } else { | |
1500 MutexLockerEx ml(Threads_lock); | |
1501 java_thread = find_java_thread_from_id(thread_id); | |
1502 if (java_thread != NULL) { | |
1503 return os::thread_cpu_time((Thread*) java_thread); | |
1504 } | |
1505 } | |
1506 return -1; | |
1507 JVM_END | |
1508 | |
1509 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
1510 // If thread_id == 0, CPU time for the current thread is returned. | |
1511 // If user_sys_cpu_time = true, user level and system CPU time of | |
1512 // a given thread is returned; otherwise, only user level CPU time | |
1513 // is returned. | |
1514 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
1515 if (!os::is_thread_cpu_time_supported()) { | |
1516 return -1; | |
1517 } | |
1518 | |
1519 if (thread_id < 0) { | |
1520 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1521 "Invalid thread ID", -1); | |
1522 } | |
1523 | |
1524 JavaThread* java_thread = NULL; | |
1525 if (thread_id == 0) { | |
1526 // current thread | |
1527 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
1528 } else { | |
1529 MutexLockerEx ml(Threads_lock); | |
1530 java_thread = find_java_thread_from_id(thread_id); | |
1531 if (java_thread != NULL) { | |
1532 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
1533 } | |
1534 } | |
1535 return -1; | |
1536 JVM_END | |
1537 | |
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1538 // Gets an array containing the CPU times consumed by a set of threads |
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1539 // (in nanoseconds). Each element of the array is the CPU time for the |
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1540 // thread ID specified in the corresponding entry in the given array |
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1541 // of thread IDs; or -1 if the thread does not exist or has terminated. |
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1542 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
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1543 // for the given thread is returned; otherwise, only user level CPU time |
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1544 // is returned. |
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1545 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
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1546 jlongArray timeArray, |
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1547 jboolean user_sys_cpu_time)) |
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1548 // Check if threads is null |
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1549 if (ids == NULL || timeArray == NULL) { |
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1550 THROW(vmSymbols::java_lang_NullPointerException()); |
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1551 } |
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1552 |
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1553 ResourceMark rm(THREAD); |
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1554 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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1555 typeArrayHandle ids_ah(THREAD, ta); |
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1556 |
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1557 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
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1558 typeArrayHandle timeArray_h(THREAD, tia); |
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1559 |
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1560 // validate the thread id array |
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1561 validate_thread_id_array(ids_ah, CHECK); |
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1562 |
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1563 // timeArray must be of the same length as the given array of thread IDs |
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1564 int num_threads = ids_ah->length(); |
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1565 if (num_threads != timeArray_h->length()) { |
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1566 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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1567 "The length of the given long array does not match the length of " |
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1568 "the given array of thread IDs"); |
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1569 } |
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1570 |
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1571 MutexLockerEx ml(Threads_lock); |
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1572 for (int i = 0; i < num_threads; i++) { |
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1573 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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1574 if (java_thread != NULL) { |
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1575 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
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1576 user_sys_cpu_time != 0)); |
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1577 } |
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1578 } |
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1579 JVM_END |
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1580 |
0 | 1581 // Returns a String array of all VM global flag names |
1582 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1583 // last flag entry is always NULL, so subtract 1 | |
1584 int nFlags = (int) Flag::numFlags - 1; | |
1585 // allocate a temp array | |
1142 | 1586 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1587 nFlags, CHECK_0); |
1588 objArrayHandle flags_ah(THREAD, r); | |
1589 int num_entries = 0; | |
1590 for (int i = 0; i < nFlags; i++) { | |
1591 Flag* flag = &Flag::flags[i]; | |
350 | 1592 // Exclude the locked (experimental, diagnostic) flags |
0 | 1593 if (flag->is_unlocked() || flag->is_unlocker()) { |
1594 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
1595 flags_ah->obj_at_put(num_entries, s()); | |
1596 num_entries++; | |
1597 } | |
1598 } | |
1599 | |
1600 if (num_entries < nFlags) { | |
1601 // Return array of right length | |
1142 | 1602 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1603 for(int i = 0; i < num_entries; i++) { |
1604 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1605 } | |
1606 return (jobjectArray)JNIHandles::make_local(env, res); | |
1607 } | |
1608 | |
1609 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1610 JVM_END | |
1611 | |
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1612 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1613 // can't be determined, true otherwise. If false is returned, then *global |
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1614 // will be incomplete and invalid. |
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1615 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1616 Handle flag_name; |
1617 if (name() == NULL) { | |
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1618 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
0 | 1619 } else { |
1620 flag_name = name; | |
1621 } | |
1622 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1623 | |
1624 if (flag->is_bool()) { | |
1625 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1626 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1627 } else if (flag->is_intx()) { | |
1628 global->value.j = (jlong)flag->get_intx(); | |
1629 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1630 } else if (flag->is_uintx()) { | |
1631 global->value.j = (jlong)flag->get_uintx(); | |
1632 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1633 } else if (flag->is_uint64_t()) { |
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1634 global->value.j = (jlong)flag->get_uint64_t(); |
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1635 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1636 } else if (flag->is_ccstr()) { |
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1637 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1638 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1639 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1640 } else { |
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1641 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1642 return false; |
0 | 1643 } |
1644 | |
1645 global->writeable = flag->is_writeable(); | |
1646 global->external = flag->is_external(); | |
1647 switch (flag->origin) { | |
1648 case DEFAULT: | |
1649 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
1650 break; | |
1651 case COMMAND_LINE: | |
1652 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
1653 break; | |
1654 case ENVIRON_VAR: | |
1655 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
1656 break; | |
1657 case CONFIG_FILE: | |
1658 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
1659 break; | |
1660 case MANAGEMENT: | |
1661 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
1662 break; | |
1663 case ERGONOMIC: | |
1664 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
1665 break; | |
1666 default: | |
1667 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1668 } | |
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1669 |
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1670 return true; |
0 | 1671 } |
1672 | |
1673 // Fill globals array of count length with jmmVMGlobal entries | |
1674 // specified by names. If names == NULL, fill globals array | |
1675 // with all Flags. Return value is number of entries | |
1676 // created in globals. | |
1677 // If a Flag with a given name in an array element does not | |
1678 // exist, globals[i].name will be set to NULL. | |
1679 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1680 jobjectArray names, | |
1681 jmmVMGlobal *globals, | |
1682 jint count)) | |
1683 | |
1684 | |
1685 if (globals == NULL) { | |
1686 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1687 } | |
1688 | |
1689 ResourceMark rm(THREAD); | |
1690 | |
1691 if (names != NULL) { | |
1692 // return the requested globals | |
1693 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1694 objArrayHandle names_ah(THREAD, ta); | |
1695 // Make sure we have a String array | |
1696 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1697 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1698 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1699 "Array element type is not String class", 0); | |
1700 } | |
1701 | |
1702 int names_length = names_ah->length(); | |
1703 int num_entries = 0; | |
1704 for (int i = 0; i < names_length && i < count; i++) { | |
1705 oop s = names_ah->obj_at(i); | |
1706 if (s == NULL) { | |
1707 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1708 } | |
1709 | |
1710 Handle sh(THREAD, s); | |
1711 char* str = java_lang_String::as_utf8_string(s); | |
1712 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1713 if (flag != NULL && |
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1714 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1715 num_entries++; |
1716 } else { | |
1717 globals[i].name = NULL; | |
1718 } | |
1719 } | |
1720 return num_entries; | |
1721 } else { | |
1722 // return all globals if names == NULL | |
1723 | |
1724 // last flag entry is always NULL, so subtract 1 | |
1725 int nFlags = (int) Flag::numFlags - 1; | |
1726 Handle null_h; | |
1727 int num_entries = 0; | |
1728 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1729 Flag* flag = &Flag::flags[i]; | |
350 | 1730 // Exclude the locked (diagnostic, experimental) flags |
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1731 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1732 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1733 num_entries++; |
1734 } | |
1735 } | |
1736 return num_entries; | |
1737 } | |
1738 JVM_END | |
1739 | |
1740 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1741 ResourceMark rm(THREAD); | |
1742 | |
1743 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1744 if (fn == NULL) { | |
1745 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1746 "The flag name cannot be null."); | |
1747 } | |
1748 char* name = java_lang_String::as_utf8_string(fn); | |
1749 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1750 if (flag == NULL) { | |
1751 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1752 "Flag does not exist."); | |
1753 } | |
1754 if (!flag->is_writeable()) { | |
1755 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1756 "This flag is not writeable."); | |
1757 } | |
1758 | |
1759 bool succeed; | |
1760 if (flag->is_bool()) { | |
1761 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
1762 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
1763 } else if (flag->is_intx()) { | |
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1764 intx ivalue = (intx)new_value.j; |
0 | 1765 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
1766 } else if (flag->is_uintx()) { | |
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1767 uintx uvalue = (uintx)new_value.j; |
0 | 1768 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1769 } else if (flag->is_uint64_t()) { |
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1770 uint64_t uvalue = (uint64_t)new_value.j; |
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1771 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
0 | 1772 } else if (flag->is_ccstr()) { |
1773 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1774 if (str == NULL) { | |
1775 THROW(vmSymbols::java_lang_NullPointerException()); | |
1776 } | |
1777 ccstr svalue = java_lang_String::as_utf8_string(str); | |
1778 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
1779 } | |
1780 assert(succeed, "Setting flag should succeed"); | |
1781 JVM_END | |
1782 | |
1783 class ThreadTimesClosure: public ThreadClosure { | |
1784 private: | |
1785 objArrayOop _names; | |
1786 typeArrayOop _times; | |
1787 int _names_len; | |
1788 int _times_len; | |
1789 int _count; | |
1790 | |
1791 public: | |
1792 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
1793 virtual void do_thread(Thread* thread); | |
1794 int count() { return _count; } | |
1795 }; | |
1796 | |
1797 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
1798 typeArrayOop times) { | |
1799 assert(names != NULL, "names was NULL"); | |
1800 assert(times != NULL, "times was NULL"); | |
1801 _names = names; | |
1802 _names_len = names->length(); | |
1803 _times = times; | |
1804 _times_len = times->length(); | |
1805 _count = 0; | |
1806 } | |
1807 | |
1808 void ThreadTimesClosure::do_thread(Thread* thread) { | |
1809 Handle s; | |
1810 assert(thread != NULL, "thread was NULL"); | |
1811 | |
1812 // exclude externally visible JavaThreads | |
1813 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1814 return; | |
1815 } | |
1816 | |
1817 if (_count >= _names_len || _count >= _times_len) { | |
1818 // skip if the result array is not big enough | |
1819 return; | |
1820 } | |
1821 | |
1822 EXCEPTION_MARK; | |
1823 | |
1824 assert(thread->name() != NULL, "All threads should have a name"); | |
1825 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
1826 _names->obj_at_put(_count, s()); | |
1827 | |
1828 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
1829 os::thread_cpu_time(thread) : -1); | |
1830 _count++; | |
1831 } | |
1832 | |
1833 // Fills names with VM internal thread names and times with the corresponding | |
1834 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1835 // If the element type of names is not String, an IllegalArgumentException is | |
1836 // thrown. | |
1837 // If an array is not large enough to hold all the entries, only the entries | |
1838 // that fit will be returned. Return value is the number of VM internal | |
1839 // threads entries. | |
1840 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1841 jobjectArray names, | |
1842 jlongArray times)) | |
1843 if (names == NULL || times == NULL) { | |
1844 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1845 } | |
1846 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1847 objArrayHandle names_ah(THREAD, na); | |
1848 | |
1849 // Make sure we have a String array | |
1850 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1851 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1852 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1853 "Array element type is not String class", 0); | |
1854 } | |
1855 | |
1856 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1857 typeArrayHandle times_ah(THREAD, ta); | |
1858 | |
1859 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
1860 { | |
1861 MutexLockerEx ml(Threads_lock); | |
1862 Threads::threads_do(&ttc); | |
1863 } | |
1864 | |
1865 return ttc.count(); | |
1866 JVM_END | |
1867 | |
1868 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1869 ResourceMark rm(THREAD); | |
1870 | |
1871 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1872 VMThread::execute(&op); | |
1873 | |
1874 DeadlockCycle* deadlocks = op.result(); | |
1875 if (deadlocks == NULL) { | |
1876 // no deadlock found and return | |
1877 return Handle(); | |
1878 } | |
1879 | |
1880 int num_threads = 0; | |
1881 DeadlockCycle* cycle; | |
1882 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1883 num_threads += cycle->num_threads(); | |
1884 } | |
1885 | |
1142 | 1886 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1887 objArrayHandle threads_ah(THREAD, r); |
1888 | |
1889 int index = 0; | |
1890 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1891 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1892 int len = deadlock_threads->length(); | |
1893 for (int i = 0; i < len; i++) { | |
1894 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1895 index++; | |
1896 } | |
1897 } | |
1898 return threads_ah; | |
1899 } | |
1900 | |
1901 // Finds cycles of threads that are deadlocked involved in object monitors | |
1902 // and JSR-166 synchronizers. | |
1903 // Returns an array of Thread objects which are in deadlock, if any. | |
1904 // Otherwise, returns NULL. | |
1905 // | |
1906 // Input parameter: | |
1907 // object_monitors_only - if true, only check object monitors | |
1908 // | |
1909 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1910 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1911 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1912 JVM_END | |
1913 | |
1914 // Finds cycles of threads that are deadlocked on monitor locks | |
1915 // Returns an array of Thread objects which are in deadlock, if any. | |
1916 // Otherwise, returns NULL. | |
1917 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1918 Handle result = find_deadlocks(true, CHECK_0); | |
1919 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1920 JVM_END | |
1921 | |
1922 // Gets the information about GC extension attributes including | |
1923 // the name of the attribute, its type, and a short description. | |
1924 // | |
1925 // Input parameters: | |
1926 // mgr - GC memory manager | |
1927 // info - caller allocated array of jmmExtAttributeInfo | |
1928 // count - number of elements of the info array | |
1929 // | |
1930 // Returns the number of GC extension attributes filled in the info array; or | |
1931 // -1 if info is not big enough | |
1932 // | |
1933 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1934 // All GC memory managers have 1 attribute (number of GC threads) | |
1935 if (count == 0) { | |
1936 return 0; | |
1937 } | |
1938 | |
1939 if (info == NULL) { | |
1940 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1941 } | |
1942 | |
1943 info[0].name = "GcThreadCount"; | |
1944 info[0].type = 'I'; | |
1945 info[0].description = "Number of GC threads"; | |
1946 return 1; | |
1947 JVM_END | |
1948 | |
1949 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1950 // of a given length and return the objArrayOop | |
1951 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1952 if (array == NULL) { | |
1953 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1954 } | |
1955 | |
1956 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1957 objArrayHandle array_h(THREAD, oa); | |
1958 | |
1959 // array must be of the given length | |
1960 if (length != array_h->length()) { | |
1961 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1962 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
1963 } | |
1964 | |
1965 // check if the element of array is of type MemoryUsage class | |
1966 klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); | |
1967 klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); | |
1968 if (element_klass != usage_klass) { | |
1969 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1970 "The element type is not MemoryUsage class", 0); | |
1971 } | |
1972 | |
1973 return array_h(); | |
1974 } | |
1975 | |
1976 // Gets the statistics of the last GC of a given GC memory manager. | |
1977 // Input parameters: | |
1978 // obj - GarbageCollectorMXBean object | |
1979 // gc_stat - caller allocated jmmGCStat where: | |
1980 // a. before_gc_usage - array of MemoryUsage objects | |
1981 // b. after_gc_usage - array of MemoryUsage objects | |
1982 // c. gc_ext_attributes_values_size is set to the | |
1983 // gc_ext_attribute_values array allocated | |
1984 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
1985 // | |
1986 // On return, | |
1987 // gc_index == 0 indicates no GC statistics available | |
1988 // | |
1989 // before_gc_usage and after_gc_usage - filled with per memory pool | |
1990 // before and after GC usage in the same order as the memory pools | |
1991 // returned by GetMemoryPools for a given GC memory manager. | |
1992 // num_gc_ext_attributes indicates the number of elements in | |
1993 // the gc_ext_attribute_values array is filled; or | |
1994 // -1 if the gc_ext_attributes_values array is not big enough | |
1995 // | |
1996 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
1997 ResourceMark rm(THREAD); | |
1998 | |
1999 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
2000 THROW(vmSymbols::java_lang_NullPointerException()); | |
2001 } | |
2002 | |
2003 // Get the GCMemoryManager | |
2004 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
2005 | |
2006 // Make a copy of the last GC statistics | |
2007 // GC may occur while constructing the last GC information | |
2008 int num_pools = MemoryService::num_memory_pools(); | |
2009 GCStatInfo* stat = new GCStatInfo(num_pools); | |
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2010 if (mgr->get_last_gc_stat(stat) == 0) { |
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2011 gc_stat->gc_index = 0; |
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2012 return; |
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2013 } |
0 | 2014 |
2015 gc_stat->gc_index = stat->gc_index(); | |
2016 gc_stat->start_time = Management::ticks_to_ms(stat->start_time()); | |
2017 gc_stat->end_time = Management::ticks_to_ms(stat->end_time()); | |
2018 | |
2019 // Current implementation does not have GC extension attributes | |
2020 gc_stat->num_gc_ext_attributes = 0; | |
2021 | |
2022 // Fill the arrays of MemoryUsage objects with before and after GC | |
2023 // per pool memory usage | |
2024 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2025 num_pools, | |
2026 CHECK); | |
2027 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2028 | |
2029 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2030 num_pools, | |
2031 CHECK); | |
2032 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2033 | |
2034 for (int i = 0; i < num_pools; i++) { | |
2035 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK); | |
2036 Handle after_usage; | |
2037 | |
2038 MemoryUsage u = stat->after_gc_usage_for_pool(i); | |
2039 if (u.max_size() == 0 && u.used() > 0) { | |
2040 // If max size == 0, this pool is a survivor space. | |
2041 // Set max size = -1 since the pools will be swapped after GC. | |
2042 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2043 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2044 } else { | |
2045 after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK); | |
2046 } | |
2047 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2048 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2049 } | |
2050 | |
2051 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2052 // Current implementation only has 1 attribute (number of GC threads) | |
2053 // The type is 'I' | |
2054 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2055 } | |
2056 JVM_END | |
2057 | |
2058 // Dump heap - Returns 0 if succeeds. | |
2059 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
2060 #ifndef SERVICES_KERNEL | |
2061 ResourceMark rm(THREAD); | |
2062 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2063 if (on == NULL) { | |
2064 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2065 "Output file name cannot be null.", -1); | |
2066 } | |
2067 char* name = java_lang_String::as_utf8_string(on); | |
2068 if (name == NULL) { | |
2069 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2070 "Output file name cannot be null.", -1); | |
2071 } | |
2072 HeapDumper dumper(live ? true : false); | |
2073 if (dumper.dump(name) != 0) { | |
2074 const char* errmsg = dumper.error_as_C_string(); | |
2075 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2076 } | |
2077 return 0; | |
2078 #else // SERVICES_KERNEL | |
2079 return -1; | |
2080 #endif // SERVICES_KERNEL | |
2081 JVM_END | |
2082 | |
2083 jlong Management::ticks_to_ms(jlong ticks) { | |
2084 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2085 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2086 * (double)1000.0); | |
2087 } | |
2088 | |
2089 const struct jmmInterface_1_ jmm_interface = { | |
2090 NULL, | |
2091 NULL, | |
2092 jmm_GetVersion, | |
2093 jmm_GetOptionalSupport, | |
2094 jmm_GetInputArguments, | |
2095 jmm_GetThreadInfo, | |
2096 jmm_GetInputArgumentArray, | |
2097 jmm_GetMemoryPools, | |
2098 jmm_GetMemoryManagers, | |
2099 jmm_GetMemoryPoolUsage, | |
2100 jmm_GetPeakMemoryPoolUsage, | |
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2101 jmm_GetThreadAllocatedMemory, |
0 | 2102 jmm_GetMemoryUsage, |
2103 jmm_GetLongAttribute, | |
2104 jmm_GetBoolAttribute, | |
2105 jmm_SetBoolAttribute, | |
2106 jmm_GetLongAttributes, | |
2107 jmm_FindMonitorDeadlockedThreads, | |
2108 jmm_GetThreadCpuTime, | |
2109 jmm_GetVMGlobalNames, | |
2110 jmm_GetVMGlobals, | |
2111 jmm_GetInternalThreadTimes, | |
2112 jmm_ResetStatistic, | |
2113 jmm_SetPoolSensor, | |
2114 jmm_SetPoolThreshold, | |
2115 jmm_GetPoolCollectionUsage, | |
2116 jmm_GetGCExtAttributeInfo, | |
2117 jmm_GetLastGCStat, | |
2118 jmm_GetThreadCpuTimeWithKind, | |
2100
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2119 jmm_GetThreadCpuTimesWithKind, |
0 | 2120 jmm_DumpHeap0, |
2121 jmm_FindDeadlockedThreads, | |
2122 jmm_SetVMGlobal, | |
2123 NULL, | |
2124 jmm_DumpThreads | |
2125 }; | |
2126 | |
2127 void* Management::get_jmm_interface(int version) { | |
2128 if (version == JMM_VERSION_1_0) { | |
2129 return (void*) &jmm_interface; | |
2130 } | |
2131 return NULL; | |
2132 } |