Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 3744:60b8287df30e
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
Summary: Delegate invokedynamic linkage errors to MethodHandleNatives.raiseException.
Reviewed-by: never
author | jrose |
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date | Wed, 01 Jun 2011 23:25:20 -0700 |
parents | 78542e2b5e35 |
children | 3b688d6ff3d0 |
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" | |
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41 #include "runtime/serviceThread.hpp" |
1972 | 42 #include "services/classLoadingService.hpp" |
43 #include "services/heapDumper.hpp" | |
44 #include "services/lowMemoryDetector.hpp" | |
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45 #include "services/gcNotifier.hpp" |
1972 | 46 #include "services/management.hpp" |
47 #include "services/memoryManager.hpp" | |
48 #include "services/memoryPool.hpp" | |
49 #include "services/memoryService.hpp" | |
50 #include "services/runtimeService.hpp" | |
51 #include "services/threadService.hpp" | |
0 | 52 |
53 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
54 PerfVariable* Management::_end_vm_creation_time = NULL; | |
55 PerfVariable* Management::_vm_init_done_time = NULL; | |
56 | |
57 klassOop Management::_sensor_klass = NULL; | |
58 klassOop Management::_threadInfo_klass = NULL; | |
59 klassOop Management::_memoryUsage_klass = NULL; | |
60 klassOop Management::_memoryPoolMXBean_klass = NULL; | |
61 klassOop Management::_memoryManagerMXBean_klass = NULL; | |
62 klassOop Management::_garbageCollectorMXBean_klass = NULL; | |
63 klassOop Management::_managementFactory_klass = NULL; | |
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64 klassOop Management::_garbageCollectorImpl_klass = NULL; |
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65 klassOop Management::_gcInfo_klass = NULL; |
0 | 66 |
67 jmmOptionalSupport Management::_optional_support = {0}; | |
68 TimeStamp Management::_stamp; | |
69 | |
70 void management_init() { | |
71 Management::init(); | |
72 ThreadService::init(); | |
73 RuntimeService::init(); | |
74 ClassLoadingService::init(); | |
75 } | |
76 | |
77 void Management::init() { | |
78 EXCEPTION_MARK; | |
79 | |
80 // These counters are for java.lang.management API support. | |
81 // They are created even if -XX:-UsePerfData is set and in | |
82 // that case, they will be allocated on C heap. | |
83 | |
84 _begin_vm_creation_time = | |
85 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
86 PerfData::U_None, CHECK); | |
87 | |
88 _end_vm_creation_time = | |
89 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
90 PerfData::U_None, CHECK); | |
91 | |
92 _vm_init_done_time = | |
93 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
94 PerfData::U_None, CHECK); | |
95 | |
96 // Initialize optional support | |
97 _optional_support.isLowMemoryDetectionSupported = 1; | |
98 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
99 _optional_support.isThreadContentionMonitoringSupported = 1; | |
100 | |
101 if (os::is_thread_cpu_time_supported()) { | |
102 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
103 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
104 } else { | |
105 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
106 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
107 } | |
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108 |
0 | 109 _optional_support.isBootClassPathSupported = 1; |
110 _optional_support.isObjectMonitorUsageSupported = 1; | |
111 #ifndef SERVICES_KERNEL | |
112 // This depends on the heap inspector | |
113 _optional_support.isSynchronizerUsageSupported = 1; | |
114 #endif // SERVICES_KERNEL | |
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115 _optional_support.isThreadAllocatedMemorySupported = 1; |
0 | 116 } |
117 | |
118 void Management::initialize(TRAPS) { | |
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119 // Start the service thread |
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120 ServiceThread::initialize(); |
0 | 121 |
122 if (ManagementServer) { | |
123 ResourceMark rm(THREAD); | |
124 HandleMark hm(THREAD); | |
125 | |
126 // Load and initialize the sun.management.Agent class | |
127 // invoke startAgent method to start the management server | |
128 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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129 klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 130 loader, |
131 Handle(), | |
132 true, | |
133 CHECK); | |
134 instanceKlassHandle ik (THREAD, k); | |
135 | |
136 JavaValue result(T_VOID); | |
137 JavaCalls::call_static(&result, | |
138 ik, | |
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139 vmSymbols::startAgent_name(), |
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140 vmSymbols::void_method_signature(), |
0 | 141 CHECK); |
142 } | |
143 } | |
144 | |
145 void Management::get_optional_support(jmmOptionalSupport* support) { | |
146 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
147 } | |
148 | |
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149 klassOop Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
0 | 150 klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
151 instanceKlassHandle ik (THREAD, k); | |
152 if (ik->should_be_initialized()) { | |
153 ik->initialize(CHECK_NULL); | |
154 } | |
155 return ik(); | |
156 } | |
157 | |
158 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
159 // if the performance counter is not initialized, | |
160 // then vm initialization failed; simply return. | |
161 if (_begin_vm_creation_time == NULL) return; | |
162 | |
163 _begin_vm_creation_time->set_value(begin); | |
164 _end_vm_creation_time->set_value(begin + duration); | |
165 PerfMemory::set_accessible(true); | |
166 } | |
167 | |
168 jlong Management::timestamp() { | |
169 TimeStamp t; | |
170 t.update(); | |
171 return t.ticks() - _stamp.ticks(); | |
172 } | |
173 | |
174 void Management::oops_do(OopClosure* f) { | |
175 MemoryService::oops_do(f); | |
176 ThreadService::oops_do(f); | |
177 | |
178 f->do_oop((oop*) &_sensor_klass); | |
179 f->do_oop((oop*) &_threadInfo_klass); | |
180 f->do_oop((oop*) &_memoryUsage_klass); | |
181 f->do_oop((oop*) &_memoryPoolMXBean_klass); | |
182 f->do_oop((oop*) &_memoryManagerMXBean_klass); | |
183 f->do_oop((oop*) &_garbageCollectorMXBean_klass); | |
184 f->do_oop((oop*) &_managementFactory_klass); | |
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185 f->do_oop((oop*) &_garbageCollectorImpl_klass); |
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186 f->do_oop((oop*) &_gcInfo_klass); |
0 | 187 } |
188 | |
189 klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { | |
190 if (_threadInfo_klass == NULL) { | |
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191 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 192 } |
193 return _threadInfo_klass; | |
194 } | |
195 | |
196 klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { | |
197 if (_memoryUsage_klass == NULL) { | |
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198 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 199 } |
200 return _memoryUsage_klass; | |
201 } | |
202 | |
203 klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { | |
204 if (_memoryPoolMXBean_klass == NULL) { | |
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205 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 206 } |
207 return _memoryPoolMXBean_klass; | |
208 } | |
209 | |
210 klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { | |
211 if (_memoryManagerMXBean_klass == NULL) { | |
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212 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 213 } |
214 return _memoryManagerMXBean_klass; | |
215 } | |
216 | |
217 klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { | |
218 if (_garbageCollectorMXBean_klass == NULL) { | |
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219 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 220 } |
221 return _garbageCollectorMXBean_klass; | |
222 } | |
223 | |
224 klassOop Management::sun_management_Sensor_klass(TRAPS) { | |
225 if (_sensor_klass == NULL) { | |
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226 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 227 } |
228 return _sensor_klass; | |
229 } | |
230 | |
231 klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { | |
232 if (_managementFactory_klass == NULL) { | |
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233 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 234 } |
235 return _managementFactory_klass; | |
236 } | |
237 | |
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238 klassOop Management::sun_management_GarbageCollectorImpl_klass(TRAPS) { |
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239 if (_garbageCollectorImpl_klass == NULL) { |
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240 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL); |
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241 } |
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242 return _garbageCollectorImpl_klass; |
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243 } |
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244 |
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245 klassOop Management::com_sun_management_GcInfo_klass(TRAPS) { |
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246 if (_gcInfo_klass == NULL) { |
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247 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); |
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248 } |
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249 return _gcInfo_klass; |
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250 } |
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251 |
0 | 252 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
253 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
254 | |
255 jlong contended_time; | |
256 jlong waited_time; | |
257 if (ThreadService::is_thread_monitoring_contention()) { | |
258 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
259 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
260 } else { | |
261 // set them to -1 if thread contention monitoring is disabled. | |
262 contended_time = max_julong; | |
263 waited_time = max_julong; | |
264 } | |
265 | |
266 int thread_status = snapshot->thread_status(); | |
267 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
268 if (snapshot->is_ext_suspended()) { | |
269 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
270 } | |
271 if (snapshot->is_in_native()) { | |
272 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
273 } | |
274 | |
275 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
276 Handle stacktrace_h; | |
277 if (st != NULL) { | |
278 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
279 } else { | |
280 stacktrace_h = Handle(); | |
281 } | |
282 | |
283 args->push_oop(snapshot_thread); | |
284 args->push_int(thread_status); | |
285 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
286 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
287 args->push_long(snapshot->contended_enter_count()); | |
288 args->push_long(contended_time); | |
289 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
290 args->push_long(waited_time); | |
291 args->push_oop(stacktrace_h); | |
292 } | |
293 | |
294 // Helper function to construct a ThreadInfo object | |
295 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
296 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
297 instanceKlassHandle ik (THREAD, k); | |
298 | |
299 JavaValue result(T_VOID); | |
300 JavaCallArguments args(14); | |
301 | |
302 // First allocate a ThreadObj object and | |
303 // push the receiver as the first argument | |
304 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
305 args.push_oop(element); | |
306 | |
307 // initialize the arguments for the ThreadInfo constructor | |
308 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
309 | |
310 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
311 JavaCalls::call_special(&result, | |
312 ik, | |
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313 vmSymbols::object_initializer_name(), |
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314 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 315 &args, |
316 CHECK_NULL); | |
317 | |
318 return (instanceOop) element(); | |
319 } | |
320 | |
321 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
322 objArrayHandle monitors_array, | |
323 typeArrayHandle depths_array, | |
324 objArrayHandle synchronizers_array, | |
325 TRAPS) { | |
326 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
327 instanceKlassHandle ik (THREAD, k); | |
328 | |
329 JavaValue result(T_VOID); | |
330 JavaCallArguments args(17); | |
331 | |
332 // First allocate a ThreadObj object and | |
333 // push the receiver as the first argument | |
334 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
335 args.push_oop(element); | |
336 | |
337 // initialize the arguments for the ThreadInfo constructor | |
338 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
339 | |
340 // push the locked monitors and synchronizers in the arguments | |
341 args.push_oop(monitors_array); | |
342 args.push_oop(depths_array); | |
343 args.push_oop(synchronizers_array); | |
344 | |
345 // Call ThreadInfo constructor with locked monitors and synchronizers | |
346 JavaCalls::call_special(&result, | |
347 ik, | |
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348 vmSymbols::object_initializer_name(), |
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349 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 350 &args, |
351 CHECK_NULL); | |
352 | |
353 return (instanceOop) element(); | |
354 } | |
355 | |
356 // Helper functions | |
357 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
358 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
359 | |
360 JavaThread* java_thread = NULL; | |
361 // Sequential search for now. Need to do better optimization later. | |
362 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
363 oop tobj = thread->threadObj(); | |
364 if (!thread->is_exiting() && | |
365 tobj != NULL && | |
366 thread_id == java_lang_Thread::thread_id(tobj)) { | |
367 java_thread = thread; | |
368 break; | |
369 } | |
370 } | |
371 return java_thread; | |
372 } | |
373 | |
374 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
375 if (mgr == NULL) { | |
376 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
377 } | |
378 oop mgr_obj = JNIHandles::resolve(mgr); | |
379 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
380 | |
381 klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); | |
382 if (!h->is_a(k)) { | |
383 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
384 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
385 NULL); | |
386 } | |
387 | |
388 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
389 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
390 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
391 "Invalid GC memory manager", | |
392 NULL); | |
393 } | |
394 return (GCMemoryManager*) gc; | |
395 } | |
396 | |
397 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
398 if (obj == NULL) { | |
399 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
400 } | |
401 | |
402 oop pool_obj = JNIHandles::resolve(obj); | |
403 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
404 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
405 | |
406 return MemoryService::get_memory_pool(ph); | |
407 } | |
408 | |
409 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
410 int num_threads = ids_ah->length(); | |
411 | |
412 // Validate input thread IDs | |
413 int i = 0; | |
414 for (i = 0; i < num_threads; i++) { | |
415 jlong tid = ids_ah->long_at(i); | |
416 if (tid <= 0) { | |
417 // throw exception if invalid thread id. | |
418 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
419 "Invalid thread ID entry"); | |
420 } | |
421 } | |
422 } | |
423 | |
424 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
425 // check if the element of infoArray is of type ThreadInfo class | |
426 klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); | |
427 klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); | |
428 if (element_klass != threadinfo_klass) { | |
429 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
430 "infoArray element type is not ThreadInfo class"); | |
431 } | |
432 } | |
433 | |
434 | |
435 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
436 if (obj == NULL) { | |
437 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
438 } | |
439 | |
440 oop mgr_obj = JNIHandles::resolve(obj); | |
441 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
442 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
443 | |
444 return MemoryService::get_memory_manager(mh); | |
445 } | |
446 | |
447 // Returns a version string and sets major and minor version if | |
448 // the input parameters are non-null. | |
449 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
450 return JMM_VERSION; | |
451 JVM_END | |
452 | |
453 // Gets the list of VM monitoring and management optional supports | |
454 // Returns 0 if succeeded; otherwise returns non-zero. | |
455 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
456 if (support == NULL) { | |
457 return -1; | |
458 } | |
459 Management::get_optional_support(support); | |
460 return 0; | |
461 JVM_END | |
462 | |
463 // Returns a java.lang.String object containing the input arguments to the VM. | |
464 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
465 ResourceMark rm(THREAD); | |
466 | |
467 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
468 return NULL; | |
469 } | |
470 | |
471 char** vm_flags = Arguments::jvm_flags_array(); | |
472 char** vm_args = Arguments::jvm_args_array(); | |
473 int num_flags = Arguments::num_jvm_flags(); | |
474 int num_args = Arguments::num_jvm_args(); | |
475 | |
476 size_t length = 1; // null terminator | |
477 int i; | |
478 for (i = 0; i < num_flags; i++) { | |
479 length += strlen(vm_flags[i]); | |
480 } | |
481 for (i = 0; i < num_args; i++) { | |
482 length += strlen(vm_args[i]); | |
483 } | |
484 // add a space between each argument | |
485 length += num_flags + num_args - 1; | |
486 | |
487 // Return the list of input arguments passed to the VM | |
488 // and preserve the order that the VM processes. | |
489 char* args = NEW_RESOURCE_ARRAY(char, length); | |
490 args[0] = '\0'; | |
491 // concatenate all jvm_flags | |
492 if (num_flags > 0) { | |
493 strcat(args, vm_flags[0]); | |
494 for (i = 1; i < num_flags; i++) { | |
495 strcat(args, " "); | |
496 strcat(args, vm_flags[i]); | |
497 } | |
498 } | |
499 | |
500 if (num_args > 0 && num_flags > 0) { | |
501 // append a space if args already contains one or more jvm_flags | |
502 strcat(args, " "); | |
503 } | |
504 | |
505 // concatenate all jvm_args | |
506 if (num_args > 0) { | |
507 strcat(args, vm_args[0]); | |
508 for (i = 1; i < num_args; i++) { | |
509 strcat(args, " "); | |
510 strcat(args, vm_args[i]); | |
511 } | |
512 } | |
513 | |
514 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
515 return JNIHandles::make_local(env, hargs()); | |
516 JVM_END | |
517 | |
518 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
519 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
520 ResourceMark rm(THREAD); | |
521 | |
522 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
523 return NULL; | |
524 } | |
525 | |
526 char** vm_flags = Arguments::jvm_flags_array(); | |
527 char** vm_args = Arguments::jvm_args_array(); | |
528 int num_flags = Arguments::num_jvm_flags(); | |
529 int num_args = Arguments::num_jvm_args(); | |
530 | |
1142 | 531 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 532 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
533 objArrayHandle result_h(THREAD, r); | |
534 | |
535 int index = 0; | |
536 for (int j = 0; j < num_flags; j++, index++) { | |
537 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
538 result_h->obj_at_put(index, h()); | |
539 } | |
540 for (int i = 0; i < num_args; i++, index++) { | |
541 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
542 result_h->obj_at_put(index, h()); | |
543 } | |
544 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
545 JVM_END | |
546 | |
547 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
548 // one for each memory pool if obj == null; otherwise returns | |
549 // an array of memory pools for a given memory manager if | |
550 // it is a valid memory manager. | |
551 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
552 ResourceMark rm(THREAD); | |
553 | |
554 int num_memory_pools; | |
555 MemoryManager* mgr = NULL; | |
556 if (obj == NULL) { | |
557 num_memory_pools = MemoryService::num_memory_pools(); | |
558 } else { | |
559 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
560 if (mgr == NULL) { | |
561 return NULL; | |
562 } | |
563 num_memory_pools = mgr->num_memory_pools(); | |
564 } | |
565 | |
566 // Allocate the resulting MemoryPoolMXBean[] object | |
567 klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); | |
568 instanceKlassHandle ik (THREAD, k); | |
569 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
570 objArrayHandle poolArray(THREAD, r); | |
571 | |
572 if (mgr == NULL) { | |
573 // Get all memory pools | |
574 for (int i = 0; i < num_memory_pools; i++) { | |
575 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
576 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
577 instanceHandle ph(THREAD, p); | |
578 poolArray->obj_at_put(i, ph()); | |
579 } | |
580 } else { | |
581 // Get memory pools managed by a given memory manager | |
582 for (int i = 0; i < num_memory_pools; i++) { | |
583 MemoryPool* pool = mgr->get_memory_pool(i); | |
584 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
585 instanceHandle ph(THREAD, p); | |
586 poolArray->obj_at_put(i, ph()); | |
587 } | |
588 } | |
589 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
590 JVM_END | |
591 | |
592 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
593 // one for each memory manager if obj == null; otherwise returns | |
594 // an array of memory managers for a given memory pool if | |
595 // it is a valid memory pool. | |
596 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
597 ResourceMark rm(THREAD); | |
598 | |
599 int num_mgrs; | |
600 MemoryPool* pool = NULL; | |
601 if (obj == NULL) { | |
602 num_mgrs = MemoryService::num_memory_managers(); | |
603 } else { | |
604 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
605 if (pool == NULL) { | |
606 return NULL; | |
607 } | |
608 num_mgrs = pool->num_memory_managers(); | |
609 } | |
610 | |
611 // Allocate the resulting MemoryManagerMXBean[] object | |
612 klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); | |
613 instanceKlassHandle ik (THREAD, k); | |
614 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
615 objArrayHandle mgrArray(THREAD, r); | |
616 | |
617 if (pool == NULL) { | |
618 // Get all memory managers | |
619 for (int i = 0; i < num_mgrs; i++) { | |
620 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
621 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
622 instanceHandle ph(THREAD, p); | |
623 mgrArray->obj_at_put(i, ph()); | |
624 } | |
625 } else { | |
626 // Get memory managers for a given memory pool | |
627 for (int i = 0; i < num_mgrs; i++) { | |
628 MemoryManager* mgr = pool->get_memory_manager(i); | |
629 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
630 instanceHandle ph(THREAD, p); | |
631 mgrArray->obj_at_put(i, ph()); | |
632 } | |
633 } | |
634 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
635 JVM_END | |
636 | |
637 | |
638 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
639 // of a given memory pool. | |
640 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
641 ResourceMark rm(THREAD); | |
642 | |
643 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
644 if (pool != NULL) { | |
645 MemoryUsage usage = pool->get_memory_usage(); | |
646 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
647 return JNIHandles::make_local(env, h()); | |
648 } else { | |
649 return NULL; | |
650 } | |
651 JVM_END | |
652 | |
653 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
654 // of a given memory pool. | |
655 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
656 ResourceMark rm(THREAD); | |
657 | |
658 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
659 if (pool != NULL) { | |
660 MemoryUsage usage = pool->get_peak_memory_usage(); | |
661 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
662 return JNIHandles::make_local(env, h()); | |
663 } else { | |
664 return NULL; | |
665 } | |
666 JVM_END | |
667 | |
668 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
669 // of a given memory pool after most recent GC. | |
670 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
671 ResourceMark rm(THREAD); | |
672 | |
673 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
674 if (pool != NULL && pool->is_collected_pool()) { | |
675 MemoryUsage usage = pool->get_last_collection_usage(); | |
676 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
677 return JNIHandles::make_local(env, h()); | |
678 } else { | |
679 return NULL; | |
680 } | |
681 JVM_END | |
682 | |
683 // Sets the memory pool sensor for a threshold type | |
684 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
685 if (obj == NULL || sensorObj == NULL) { | |
686 THROW(vmSymbols::java_lang_NullPointerException()); | |
687 } | |
688 | |
689 klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); | |
690 oop s = JNIHandles::resolve(sensorObj); | |
691 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
692 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
693 if (!sensor_h->is_a(sensor_klass)) { | |
694 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
695 "Sensor is not an instance of sun.management.Sensor class"); | |
696 } | |
697 | |
698 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
699 assert(mpool != NULL, "MemoryPool should exist"); | |
700 | |
701 switch (type) { | |
702 case JMM_USAGE_THRESHOLD_HIGH: | |
703 case JMM_USAGE_THRESHOLD_LOW: | |
704 // have only one sensor for threshold high and low | |
705 mpool->set_usage_sensor_obj(sensor_h); | |
706 break; | |
707 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
708 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
709 // have only one sensor for threshold high and low | |
710 mpool->set_gc_usage_sensor_obj(sensor_h); | |
711 break; | |
712 default: | |
713 assert(false, "Unrecognized type"); | |
714 } | |
715 | |
716 JVM_END | |
717 | |
718 | |
719 // Sets the threshold of a given memory pool. | |
720 // Returns the previous threshold. | |
721 // | |
722 // Input parameters: | |
723 // pool - the MemoryPoolMXBean object | |
724 // type - threshold type | |
725 // threshold - the new threshold (must not be negative) | |
726 // | |
727 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
728 if (threshold < 0) { | |
729 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
730 "Invalid threshold value", | |
731 -1); | |
732 } | |
733 | |
489
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734 if ((size_t)threshold > max_uintx) { |
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735 stringStream st; |
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736 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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737 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 738 } |
739 | |
740 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
741 assert(pool != NULL, "MemoryPool should exist"); | |
742 | |
743 jlong prev = 0; | |
744 switch (type) { | |
745 case JMM_USAGE_THRESHOLD_HIGH: | |
746 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
747 return -1; | |
748 } | |
749 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
750 break; | |
751 | |
752 case JMM_USAGE_THRESHOLD_LOW: | |
753 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
754 return -1; | |
755 } | |
756 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
757 break; | |
758 | |
759 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
760 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
761 return -1; | |
762 } | |
763 // return and the new threshold is effective for the next GC | |
764 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
765 | |
766 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
767 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
768 return -1; | |
769 } | |
770 // return and the new threshold is effective for the next GC | |
771 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
772 | |
773 default: | |
774 assert(false, "Unrecognized type"); | |
775 return -1; | |
776 } | |
777 | |
778 // When the threshold is changed, reevaluate if the low memory | |
779 // detection is enabled. | |
780 if (prev != threshold) { | |
781 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
782 LowMemoryDetector::detect_low_memory(pool); | |
783 } | |
784 return prev; | |
785 JVM_END | |
786 | |
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787 // Gets an array containing the amount of memory allocated on the Java |
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788 // heap for a set of threads (in bytes). Each element of the array is |
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789 // the amount of memory allocated for the thread ID specified in the |
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790 // corresponding entry in the given array of thread IDs; or -1 if the |
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791 // thread does not exist or has terminated. |
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792 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
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793 jlongArray sizeArray)) |
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794 // Check if threads is null |
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795 if (ids == NULL || sizeArray == NULL) { |
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796 THROW(vmSymbols::java_lang_NullPointerException()); |
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797 } |
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798 |
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799 ResourceMark rm(THREAD); |
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800 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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801 typeArrayHandle ids_ah(THREAD, ta); |
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802 |
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803 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
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804 typeArrayHandle sizeArray_h(THREAD, sa); |
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805 |
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806 // validate the thread id array |
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807 validate_thread_id_array(ids_ah, CHECK); |
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808 |
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809 // sizeArray must be of the same length as the given array of thread IDs |
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810 int num_threads = ids_ah->length(); |
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811 if (num_threads != sizeArray_h->length()) { |
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812 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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813 "The length of the given long array does not match the length of " |
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814 "the given array of thread IDs"); |
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815 } |
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816 |
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817 MutexLockerEx ml(Threads_lock); |
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818 for (int i = 0; i < num_threads; i++) { |
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819 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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820 if (java_thread != NULL) { |
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821 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
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822 } |
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823 } |
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824 JVM_END |
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825 |
0 | 826 // Returns a java/lang/management/MemoryUsage object representing |
827 // the memory usage for the heap or non-heap memory. | |
828 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
829 ResourceMark rm(THREAD); | |
830 | |
831 // Calculate the memory usage | |
832 size_t total_init = 0; | |
833 size_t total_used = 0; | |
834 size_t total_committed = 0; | |
835 size_t total_max = 0; | |
836 bool has_undefined_init_size = false; | |
837 bool has_undefined_max_size = false; | |
838 | |
839 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
840 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
841 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
842 MemoryUsage u = pool->get_memory_usage(); | |
843 total_used += u.used(); | |
844 total_committed += u.committed(); | |
845 | |
846 // if any one of the memory pool has undefined init_size or max_size, | |
847 // set it to -1 | |
848 if (u.init_size() == (size_t)-1) { | |
849 has_undefined_init_size = true; | |
850 } | |
851 if (!has_undefined_init_size) { | |
852 total_init += u.init_size(); | |
853 } | |
854 | |
855 if (u.max_size() == (size_t)-1) { | |
856 has_undefined_max_size = true; | |
857 } | |
858 if (!has_undefined_max_size) { | |
859 total_max += u.max_size(); | |
860 } | |
861 } | |
862 } | |
863 | |
1757
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864 // In our current implementation, we make sure that all non-heap |
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865 // pools have defined init and max sizes. Heap pools do not matter, |
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866 // as we never use total_init and total_max for them. |
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867 assert(heap || !has_undefined_init_size, "Undefined init size"); |
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868 assert(heap || !has_undefined_max_size, "Undefined max size"); |
0 | 869 |
1064 | 870 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 871 total_used, |
872 total_committed, | |
873 (heap ? Universe::heap()->max_capacity() : total_max)); | |
874 | |
875 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
876 return JNIHandles::make_local(env, obj()); | |
877 JVM_END | |
878 | |
879 // Returns the boolean value of a given attribute. | |
880 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
881 switch (att) { | |
882 case JMM_VERBOSE_GC: | |
883 return MemoryService::get_verbose(); | |
884 case JMM_VERBOSE_CLASS: | |
885 return ClassLoadingService::get_verbose(); | |
886 case JMM_THREAD_CONTENTION_MONITORING: | |
887 return ThreadService::is_thread_monitoring_contention(); | |
888 case JMM_THREAD_CPU_TIME: | |
889 return ThreadService::is_thread_cpu_time_enabled(); | |
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890 case JMM_THREAD_ALLOCATED_MEMORY: |
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891 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 892 default: |
893 assert(0, "Unrecognized attribute"); | |
894 return false; | |
895 } | |
896 JVM_END | |
897 | |
898 // Sets the given boolean attribute and returns the previous value. | |
899 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
900 switch (att) { | |
901 case JMM_VERBOSE_GC: | |
902 return MemoryService::set_verbose(flag != 0); | |
903 case JMM_VERBOSE_CLASS: | |
904 return ClassLoadingService::set_verbose(flag != 0); | |
905 case JMM_THREAD_CONTENTION_MONITORING: | |
906 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
907 case JMM_THREAD_CPU_TIME: | |
908 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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909 case JMM_THREAD_ALLOCATED_MEMORY: |
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910 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 911 default: |
912 assert(0, "Unrecognized attribute"); | |
913 return false; | |
914 } | |
915 JVM_END | |
916 | |
917 | |
918 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
919 switch (att) { | |
920 case JMM_GC_TIME_MS: | |
921 return mgr->gc_time_ms(); | |
922 | |
923 case JMM_GC_COUNT: | |
924 return mgr->gc_count(); | |
925 | |
926 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
927 // current implementation only has 1 ext attribute | |
928 return 1; | |
929 | |
930 default: | |
931 assert(0, "Unrecognized GC attribute"); | |
932 return -1; | |
933 } | |
934 } | |
935 | |
936 class VmThreadCountClosure: public ThreadClosure { | |
937 private: | |
938 int _count; | |
939 public: | |
940 VmThreadCountClosure() : _count(0) {}; | |
941 void do_thread(Thread* thread); | |
942 int count() { return _count; } | |
943 }; | |
944 | |
945 void VmThreadCountClosure::do_thread(Thread* thread) { | |
946 // exclude externally visible JavaThreads | |
947 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
948 return; | |
949 } | |
950 | |
951 _count++; | |
952 } | |
953 | |
954 static jint get_vm_thread_count() { | |
955 VmThreadCountClosure vmtcc; | |
956 { | |
957 MutexLockerEx ml(Threads_lock); | |
958 Threads::threads_do(&vmtcc); | |
959 } | |
960 | |
961 return vmtcc.count(); | |
962 } | |
963 | |
964 static jint get_num_flags() { | |
965 // last flag entry is always NULL, so subtract 1 | |
966 int nFlags = (int) Flag::numFlags - 1; | |
967 int count = 0; | |
968 for (int i = 0; i < nFlags; i++) { | |
969 Flag* flag = &Flag::flags[i]; | |
350 | 970 // Exclude the locked (diagnostic, experimental) flags |
0 | 971 if (flag->is_unlocked() || flag->is_unlocker()) { |
972 count++; | |
973 } | |
974 } | |
975 return count; | |
976 } | |
977 | |
978 static jlong get_long_attribute(jmmLongAttribute att) { | |
979 switch (att) { | |
980 case JMM_CLASS_LOADED_COUNT: | |
981 return ClassLoadingService::loaded_class_count(); | |
982 | |
983 case JMM_CLASS_UNLOADED_COUNT: | |
984 return ClassLoadingService::unloaded_class_count(); | |
985 | |
986 case JMM_THREAD_TOTAL_COUNT: | |
987 return ThreadService::get_total_thread_count(); | |
988 | |
989 case JMM_THREAD_LIVE_COUNT: | |
990 return ThreadService::get_live_thread_count(); | |
991 | |
992 case JMM_THREAD_PEAK_COUNT: | |
993 return ThreadService::get_peak_thread_count(); | |
994 | |
995 case JMM_THREAD_DAEMON_COUNT: | |
996 return ThreadService::get_daemon_thread_count(); | |
997 | |
998 case JMM_JVM_INIT_DONE_TIME_MS: | |
999 return Management::vm_init_done_time(); | |
1000 | |
1001 case JMM_COMPILE_TOTAL_TIME_MS: | |
1002 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
1003 | |
1004 case JMM_OS_PROCESS_ID: | |
1005 return os::current_process_id(); | |
1006 | |
1007 // Hotspot-specific counters | |
1008 case JMM_CLASS_LOADED_BYTES: | |
1009 return ClassLoadingService::loaded_class_bytes(); | |
1010 | |
1011 case JMM_CLASS_UNLOADED_BYTES: | |
1012 return ClassLoadingService::unloaded_class_bytes(); | |
1013 | |
1014 case JMM_SHARED_CLASS_LOADED_COUNT: | |
1015 return ClassLoadingService::loaded_shared_class_count(); | |
1016 | |
1017 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
1018 return ClassLoadingService::unloaded_shared_class_count(); | |
1019 | |
1020 | |
1021 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1022 return ClassLoadingService::loaded_shared_class_bytes(); | |
1023 | |
1024 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1025 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1026 | |
1027 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1028 return ClassLoader::classloader_time_ms(); | |
1029 | |
1030 case JMM_VM_GLOBAL_COUNT: | |
1031 return get_num_flags(); | |
1032 | |
1033 case JMM_SAFEPOINT_COUNT: | |
1034 return RuntimeService::safepoint_count(); | |
1035 | |
1036 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1037 return RuntimeService::safepoint_sync_time_ms(); | |
1038 | |
1039 case JMM_TOTAL_STOPPED_TIME_MS: | |
1040 return RuntimeService::safepoint_time_ms(); | |
1041 | |
1042 case JMM_TOTAL_APP_TIME_MS: | |
1043 return RuntimeService::application_time_ms(); | |
1044 | |
1045 case JMM_VM_THREAD_COUNT: | |
1046 return get_vm_thread_count(); | |
1047 | |
1048 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1049 return ClassLoader::class_init_count(); | |
1050 | |
1051 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1052 return ClassLoader::class_init_time_ms(); | |
1053 | |
1054 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1055 return ClassLoader::class_verify_time_ms(); | |
1056 | |
1057 case JMM_METHOD_DATA_SIZE_BYTES: | |
1058 return ClassLoadingService::class_method_data_size(); | |
1059 | |
1060 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1061 return os::physical_memory(); | |
1062 | |
1063 default: | |
1064 return -1; | |
1065 } | |
1066 } | |
1067 | |
1068 | |
1069 // Returns the long value of a given attribute. | |
1070 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1071 if (obj == NULL) { | |
1072 return get_long_attribute(att); | |
1073 } else { | |
1074 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1075 if (mgr != NULL) { | |
1076 return get_gc_attribute(mgr, att); | |
1077 } | |
1078 } | |
1079 return -1; | |
1080 JVM_END | |
1081 | |
1082 // Gets the value of all attributes specified in the given array | |
1083 // and sets the value in the result array. | |
1084 // Returns the number of attributes found. | |
1085 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1086 jobject obj, | |
1087 jmmLongAttribute* atts, | |
1088 jint count, | |
1089 jlong* result)) | |
1090 | |
1091 int num_atts = 0; | |
1092 if (obj == NULL) { | |
1093 for (int i = 0; i < count; i++) { | |
1094 result[i] = get_long_attribute(atts[i]); | |
1095 if (result[i] != -1) { | |
1096 num_atts++; | |
1097 } | |
1098 } | |
1099 } else { | |
1100 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1101 for (int i = 0; i < count; i++) { | |
1102 result[i] = get_gc_attribute(mgr, atts[i]); | |
1103 if (result[i] != -1) { | |
1104 num_atts++; | |
1105 } | |
1106 } | |
1107 } | |
1108 return num_atts; | |
1109 JVM_END | |
1110 | |
1111 // Helper function to do thread dump for a specific list of threads | |
1112 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1113 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1114 int num_threads, | |
1115 int max_depth, | |
1116 bool with_locked_monitors, | |
1117 bool with_locked_synchronizers, | |
1118 TRAPS) { | |
1119 | |
1120 // First get an array of threadObj handles. | |
1121 // A JavaThread may terminate before we get the stack trace. | |
1122 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1123 { | |
1124 MutexLockerEx ml(Threads_lock); | |
1125 for (int i = 0; i < num_threads; i++) { | |
1126 jlong tid = ids_ah->long_at(i); | |
1127 JavaThread* jt = find_java_thread_from_id(tid); | |
1128 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
1129 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1130 thread_handle_array->append(threadObj_h); | |
1131 } | |
1132 } | |
1133 | |
1134 // Obtain thread dumps and thread snapshot information | |
1135 VM_ThreadDump op(dump_result, | |
1136 thread_handle_array, | |
1137 num_threads, | |
1138 max_depth, /* stack depth */ | |
1139 with_locked_monitors, | |
1140 with_locked_synchronizers); | |
1141 VMThread::execute(&op); | |
1142 } | |
1143 | |
1144 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1145 // for the thread ID specified in the corresponding entry in | |
1146 // the given array of thread IDs; or NULL if the thread does not exist | |
1147 // or has terminated. | |
1148 // | |
1149 // Input parameters: | |
1150 // ids - array of thread IDs | |
1151 // maxDepth - the maximum depth of stack traces to be dumped: | |
1152 // maxDepth == -1 requests to dump entire stack trace. | |
1153 // maxDepth == 0 requests no stack trace. | |
1154 // infoArray - array of ThreadInfo objects | |
1155 // | |
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1156 // QQQ - Why does this method return a value instead of void? |
0 | 1157 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1158 // Check if threads is null | |
1159 if (ids == NULL || infoArray == NULL) { | |
1160 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1161 } | |
1162 | |
1163 if (maxDepth < -1) { | |
1164 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1165 "Invalid maxDepth", -1); | |
1166 } | |
1167 | |
1168 ResourceMark rm(THREAD); | |
1169 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1170 typeArrayHandle ids_ah(THREAD, ta); | |
1171 | |
1172 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1173 objArrayOop oa = objArrayOop(infoArray_obj); | |
1174 objArrayHandle infoArray_h(THREAD, oa); | |
1175 | |
1176 // validate the thread id array | |
1177 validate_thread_id_array(ids_ah, CHECK_0); | |
1178 | |
1179 // validate the ThreadInfo[] parameters | |
1180 validate_thread_info_array(infoArray_h, CHECK_0); | |
1181 | |
1182 // infoArray must be of the same length as the given array of thread IDs | |
1183 int num_threads = ids_ah->length(); | |
1184 if (num_threads != infoArray_h->length()) { | |
1185 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1186 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1187 } | |
1188 | |
1189 if (JDK_Version::is_gte_jdk16x_version()) { | |
1190 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1191 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1192 } | |
1193 | |
1194 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1195 // GC may occur after the thread snapshots are taken but before | |
1196 // this function returns. The threadObj and other oops kept | |
1197 // in the ThreadSnapshot are marked and adjusted during GC. | |
1198 ThreadDumpResult dump_result(num_threads); | |
1199 | |
1200 if (maxDepth == 0) { | |
1201 // no stack trace dumped - do not need to stop the world | |
1202 { | |
1203 MutexLockerEx ml(Threads_lock); | |
1204 for (int i = 0; i < num_threads; i++) { | |
1205 jlong tid = ids_ah->long_at(i); | |
1206 JavaThread* jt = find_java_thread_from_id(tid); | |
1207 ThreadSnapshot* ts; | |
1208 if (jt == NULL) { | |
1209 // if the thread does not exist or now it is terminated, | |
1210 // create dummy snapshot | |
1211 ts = new ThreadSnapshot(); | |
1212 } else { | |
1213 ts = new ThreadSnapshot(jt); | |
1214 } | |
1215 dump_result.add_thread_snapshot(ts); | |
1216 } | |
1217 } | |
1218 } else { | |
1219 // obtain thread dump with the specific list of threads with stack trace | |
1220 do_thread_dump(&dump_result, | |
1221 ids_ah, | |
1222 num_threads, | |
1223 maxDepth, | |
1224 false, /* no locked monitor */ | |
1225 false, /* no locked synchronizers */ | |
1226 CHECK_0); | |
1227 } | |
1228 | |
1229 int num_snapshots = dump_result.num_snapshots(); | |
1230 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1231 int index = 0; | |
1232 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1233 // For each thread, create an java/lang/management/ThreadInfo object | |
1234 // and fill with the thread information | |
1235 | |
1236 if (ts->threadObj() == NULL) { | |
1237 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1238 infoArray_h->obj_at_put(index, NULL); | |
1239 continue; | |
1240 } | |
1241 | |
1242 // Create java.lang.management.ThreadInfo object | |
1243 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1244 infoArray_h->obj_at_put(index, info_obj); | |
1245 } | |
1246 return 0; | |
1247 JVM_END | |
1248 | |
1249 // Dump thread info for the specified threads. | |
1250 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1251 // for the thread ID specified in the corresponding entry in | |
1252 // the given array of thread IDs; or NULL if the thread does not exist | |
1253 // or has terminated. | |
1254 // | |
1255 // Input parameter: | |
1256 // ids - array of thread IDs; NULL indicates all live threads | |
1257 // locked_monitors - if true, dump locked object monitors | |
1258 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1259 // | |
1260 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1261 ResourceMark rm(THREAD); | |
1262 | |
1263 if (JDK_Version::is_gte_jdk16x_version()) { | |
1264 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1265 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1266 } | |
1267 | |
1268 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1269 int num_threads = (ta != NULL ? ta->length() : 0); | |
1270 typeArrayHandle ids_ah(THREAD, ta); | |
1271 | |
1272 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1273 | |
1274 if (ids_ah() != NULL) { | |
1275 | |
1276 // validate the thread id array | |
1277 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1278 | |
1279 // obtain thread dump of a specific list of threads | |
1280 do_thread_dump(&dump_result, | |
1281 ids_ah, | |
1282 num_threads, | |
1283 -1, /* entire stack */ | |
1284 (locked_monitors ? true : false), /* with locked monitors */ | |
1285 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1286 CHECK_NULL); | |
1287 } else { | |
1288 // obtain thread dump of all threads | |
1289 VM_ThreadDump op(&dump_result, | |
1290 -1, /* entire stack */ | |
1291 (locked_monitors ? true : false), /* with locked monitors */ | |
1292 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1293 VMThread::execute(&op); | |
1294 } | |
1295 | |
1296 int num_snapshots = dump_result.num_snapshots(); | |
1297 | |
1298 // create the result ThreadInfo[] object | |
1299 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
1300 instanceKlassHandle ik (THREAD, k); | |
1301 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1302 objArrayHandle result_h(THREAD, r); | |
1303 | |
1304 int index = 0; | |
1305 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1306 if (ts->threadObj() == NULL) { | |
1307 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1308 result_h->obj_at_put(index, NULL); | |
1309 continue; | |
1310 } | |
1311 | |
1312 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1313 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1314 | |
1315 // Create Object[] filled with locked monitors | |
1316 // Create int[] filled with the stack depth where a monitor was locked | |
1317 int num_frames = stacktrace->get_stack_depth(); | |
1318 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1319 | |
1320 // Count the total number of locked monitors | |
1321 for (int i = 0; i < num_frames; i++) { | |
1322 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1323 num_locked_monitors += frame->num_locked_monitors(); | |
1324 } | |
1325 | |
1326 objArrayHandle monitors_array; | |
1327 typeArrayHandle depths_array; | |
1328 objArrayHandle synchronizers_array; | |
1329 | |
1330 if (locked_monitors) { | |
1331 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1332 // where the thread locked it | |
2267
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1333 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
0 | 1334 objArrayHandle mh(THREAD, array); |
1335 monitors_array = mh; | |
1336 | |
1337 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1338 typeArrayHandle dh(THREAD, tarray); | |
1339 depths_array = dh; | |
1340 | |
1341 int count = 0; | |
1342 int j = 0; | |
1343 for (int depth = 0; depth < num_frames; depth++) { | |
1344 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1345 int len = frame->num_locked_monitors(); | |
1346 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1347 for (j = 0; j < len; j++) { | |
1348 oop monitor = locked_monitors->at(j); | |
1349 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1350 monitors_array->obj_at_put(count, monitor); | |
1351 depths_array->int_at_put(count, depth); | |
1352 count++; | |
1353 } | |
1354 } | |
1355 | |
1356 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1357 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1358 oop object = jni_locked_monitors->at(j); | |
1359 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1360 monitors_array->obj_at_put(count, object); | |
1361 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1362 depths_array->int_at_put(count, -1); | |
1363 count++; | |
1364 } | |
1365 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1366 } | |
1367 | |
1368 if (locked_synchronizers) { | |
1369 // Create Object[] filled with locked JSR-166 synchronizers | |
1370 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1371 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1372 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1373 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1374 | |
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1375 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
0 | 1376 objArrayHandle sh(THREAD, array); |
1377 synchronizers_array = sh; | |
1378 | |
1379 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1380 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1381 } | |
1382 } | |
1383 | |
1384 // Create java.lang.management.ThreadInfo object | |
1385 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1386 monitors_array, | |
1387 depths_array, | |
1388 synchronizers_array, | |
1389 CHECK_NULL); | |
1390 result_h->obj_at_put(index, info_obj); | |
1391 } | |
1392 | |
1393 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1394 JVM_END | |
1395 | |
1396 // Returns an array of Class objects. | |
1397 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1398 ResourceMark rm(THREAD); | |
1399 | |
1400 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1401 | |
1402 int num_classes = lce.num_loaded_classes(); | |
1142 | 1403 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1404 objArrayHandle classes_ah(THREAD, r); |
1405 | |
1406 for (int i = 0; i < num_classes; i++) { | |
1407 KlassHandle kh = lce.get_klass(i); | |
1408 oop mirror = Klass::cast(kh())->java_mirror(); | |
1409 classes_ah->obj_at_put(i, mirror); | |
1410 } | |
1411 | |
1412 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1413 JVM_END | |
1414 | |
1415 // Reset statistic. Return true if the requested statistic is reset. | |
1416 // Otherwise, return false. | |
1417 // | |
1418 // Input parameters: | |
1419 // obj - specify which instance the statistic associated with to be reset | |
1420 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1421 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1422 // type - the type of statistic to be reset | |
1423 // | |
1424 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1425 ResourceMark rm(THREAD); | |
1426 | |
1427 switch (type) { | |
1428 case JMM_STAT_PEAK_THREAD_COUNT: | |
1429 ThreadService::reset_peak_thread_count(); | |
1430 return true; | |
1431 | |
1432 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1433 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1434 jlong tid = obj.j; | |
1435 if (tid < 0) { | |
1436 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1437 } | |
1438 | |
1439 // Look for the JavaThread of this given tid | |
1440 MutexLockerEx ml(Threads_lock); | |
1441 if (tid == 0) { | |
1442 // reset contention statistics for all threads if tid == 0 | |
1443 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1444 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1445 ThreadService::reset_contention_count_stat(java_thread); | |
1446 } else { | |
1447 ThreadService::reset_contention_time_stat(java_thread); | |
1448 } | |
1449 } | |
1450 } else { | |
1451 // reset contention statistics for a given thread | |
1452 JavaThread* java_thread = find_java_thread_from_id(tid); | |
1453 if (java_thread == NULL) { | |
1454 return false; | |
1455 } | |
1456 | |
1457 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1458 ThreadService::reset_contention_count_stat(java_thread); | |
1459 } else { | |
1460 ThreadService::reset_contention_time_stat(java_thread); | |
1461 } | |
1462 } | |
1463 return true; | |
1464 break; | |
1465 } | |
1466 case JMM_STAT_PEAK_POOL_USAGE: { | |
1467 jobject o = obj.l; | |
1468 if (o == NULL) { | |
1469 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1470 } | |
1471 | |
1472 oop pool_obj = JNIHandles::resolve(o); | |
1473 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1474 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1475 | |
1476 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1477 if (pool != NULL) { | |
1478 pool->reset_peak_memory_usage(); | |
1479 return true; | |
1480 } | |
1481 break; | |
1482 } | |
1483 case JMM_STAT_GC_STAT: { | |
1484 jobject o = obj.l; | |
1485 if (o == NULL) { | |
1486 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1487 } | |
1488 | |
1489 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1490 if (mgr != NULL) { | |
1491 mgr->reset_gc_stat(); | |
1492 return true; | |
1493 } | |
1494 break; | |
1495 } | |
1496 default: | |
1497 assert(0, "Unknown Statistic Type"); | |
1498 } | |
1499 return false; | |
1500 JVM_END | |
1501 | |
1502 // Returns the fast estimate of CPU time consumed by | |
1503 // a given thread (in nanoseconds). | |
1504 // If thread_id == 0, return CPU time for the current thread. | |
1505 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1506 if (!os::is_thread_cpu_time_supported()) { | |
1507 return -1; | |
1508 } | |
1509 | |
1510 if (thread_id < 0) { | |
1511 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1512 "Invalid thread ID", -1); | |
1513 } | |
1514 | |
1515 JavaThread* java_thread = NULL; | |
1516 if (thread_id == 0) { | |
1517 // current thread | |
1518 return os::current_thread_cpu_time(); | |
1519 } else { | |
1520 MutexLockerEx ml(Threads_lock); | |
1521 java_thread = find_java_thread_from_id(thread_id); | |
1522 if (java_thread != NULL) { | |
1523 return os::thread_cpu_time((Thread*) java_thread); | |
1524 } | |
1525 } | |
1526 return -1; | |
1527 JVM_END | |
1528 | |
1529 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
1530 // If thread_id == 0, CPU time for the current thread is returned. | |
1531 // If user_sys_cpu_time = true, user level and system CPU time of | |
1532 // a given thread is returned; otherwise, only user level CPU time | |
1533 // is returned. | |
1534 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
1535 if (!os::is_thread_cpu_time_supported()) { | |
1536 return -1; | |
1537 } | |
1538 | |
1539 if (thread_id < 0) { | |
1540 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1541 "Invalid thread ID", -1); | |
1542 } | |
1543 | |
1544 JavaThread* java_thread = NULL; | |
1545 if (thread_id == 0) { | |
1546 // current thread | |
1547 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
1548 } else { | |
1549 MutexLockerEx ml(Threads_lock); | |
1550 java_thread = find_java_thread_from_id(thread_id); | |
1551 if (java_thread != NULL) { | |
1552 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
1553 } | |
1554 } | |
1555 return -1; | |
1556 JVM_END | |
1557 | |
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1558 // Gets an array containing the CPU times consumed by a set of threads |
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1559 // (in nanoseconds). Each element of the array is the CPU time for the |
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1560 // thread ID specified in the corresponding entry in the given array |
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1561 // of thread IDs; or -1 if the thread does not exist or has terminated. |
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1562 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
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1563 // for the given thread is returned; otherwise, only user level CPU time |
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1564 // is returned. |
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1565 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
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1566 jlongArray timeArray, |
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1567 jboolean user_sys_cpu_time)) |
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1568 // Check if threads is null |
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1569 if (ids == NULL || timeArray == NULL) { |
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1570 THROW(vmSymbols::java_lang_NullPointerException()); |
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1571 } |
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1572 |
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1573 ResourceMark rm(THREAD); |
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1574 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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1575 typeArrayHandle ids_ah(THREAD, ta); |
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1576 |
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1577 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
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1578 typeArrayHandle timeArray_h(THREAD, tia); |
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1579 |
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1580 // validate the thread id array |
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1581 validate_thread_id_array(ids_ah, CHECK); |
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1582 |
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1583 // timeArray must be of the same length as the given array of thread IDs |
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1584 int num_threads = ids_ah->length(); |
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1585 if (num_threads != timeArray_h->length()) { |
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1586 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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1587 "The length of the given long array does not match the length of " |
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1588 "the given array of thread IDs"); |
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1589 } |
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1590 |
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1591 MutexLockerEx ml(Threads_lock); |
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1592 for (int i = 0; i < num_threads; i++) { |
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1593 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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1594 if (java_thread != NULL) { |
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1595 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
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1596 user_sys_cpu_time != 0)); |
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1597 } |
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1598 } |
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1599 JVM_END |
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1600 |
0 | 1601 // Returns a String array of all VM global flag names |
1602 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1603 // last flag entry is always NULL, so subtract 1 | |
1604 int nFlags = (int) Flag::numFlags - 1; | |
1605 // allocate a temp array | |
1142 | 1606 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1607 nFlags, CHECK_0); |
1608 objArrayHandle flags_ah(THREAD, r); | |
1609 int num_entries = 0; | |
1610 for (int i = 0; i < nFlags; i++) { | |
1611 Flag* flag = &Flag::flags[i]; | |
350 | 1612 // Exclude the locked (experimental, diagnostic) flags |
0 | 1613 if (flag->is_unlocked() || flag->is_unlocker()) { |
1614 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
1615 flags_ah->obj_at_put(num_entries, s()); | |
1616 num_entries++; | |
1617 } | |
1618 } | |
1619 | |
1620 if (num_entries < nFlags) { | |
1621 // Return array of right length | |
1142 | 1622 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1623 for(int i = 0; i < num_entries; i++) { |
1624 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1625 } | |
1626 return (jobjectArray)JNIHandles::make_local(env, res); | |
1627 } | |
1628 | |
1629 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1630 JVM_END | |
1631 | |
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1632 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1633 // can't be determined, true otherwise. If false is returned, then *global |
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1634 // will be incomplete and invalid. |
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1635 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1636 Handle flag_name; |
1637 if (name() == NULL) { | |
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1638 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
0 | 1639 } else { |
1640 flag_name = name; | |
1641 } | |
1642 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1643 | |
1644 if (flag->is_bool()) { | |
1645 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1646 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1647 } else if (flag->is_intx()) { | |
1648 global->value.j = (jlong)flag->get_intx(); | |
1649 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1650 } else if (flag->is_uintx()) { | |
1651 global->value.j = (jlong)flag->get_uintx(); | |
1652 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1653 } else if (flag->is_uint64_t()) { |
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1654 global->value.j = (jlong)flag->get_uint64_t(); |
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1655 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1656 } else if (flag->is_ccstr()) { |
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1657 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1658 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1659 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1660 } else { |
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1661 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1662 return false; |
0 | 1663 } |
1664 | |
1665 global->writeable = flag->is_writeable(); | |
1666 global->external = flag->is_external(); | |
1667 switch (flag->origin) { | |
1668 case DEFAULT: | |
1669 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
1670 break; | |
1671 case COMMAND_LINE: | |
1672 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
1673 break; | |
1674 case ENVIRON_VAR: | |
1675 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
1676 break; | |
1677 case CONFIG_FILE: | |
1678 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
1679 break; | |
1680 case MANAGEMENT: | |
1681 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
1682 break; | |
1683 case ERGONOMIC: | |
1684 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
1685 break; | |
1686 default: | |
1687 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1688 } | |
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1689 |
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1690 return true; |
0 | 1691 } |
1692 | |
1693 // Fill globals array of count length with jmmVMGlobal entries | |
1694 // specified by names. If names == NULL, fill globals array | |
1695 // with all Flags. Return value is number of entries | |
1696 // created in globals. | |
1697 // If a Flag with a given name in an array element does not | |
1698 // exist, globals[i].name will be set to NULL. | |
1699 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1700 jobjectArray names, | |
1701 jmmVMGlobal *globals, | |
1702 jint count)) | |
1703 | |
1704 | |
1705 if (globals == NULL) { | |
1706 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1707 } | |
1708 | |
1709 ResourceMark rm(THREAD); | |
1710 | |
1711 if (names != NULL) { | |
1712 // return the requested globals | |
1713 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1714 objArrayHandle names_ah(THREAD, ta); | |
1715 // Make sure we have a String array | |
1716 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1717 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1718 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1719 "Array element type is not String class", 0); | |
1720 } | |
1721 | |
1722 int names_length = names_ah->length(); | |
1723 int num_entries = 0; | |
1724 for (int i = 0; i < names_length && i < count; i++) { | |
1725 oop s = names_ah->obj_at(i); | |
1726 if (s == NULL) { | |
1727 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1728 } | |
1729 | |
1730 Handle sh(THREAD, s); | |
1731 char* str = java_lang_String::as_utf8_string(s); | |
1732 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1733 if (flag != NULL && |
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1734 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1735 num_entries++; |
1736 } else { | |
1737 globals[i].name = NULL; | |
1738 } | |
1739 } | |
1740 return num_entries; | |
1741 } else { | |
1742 // return all globals if names == NULL | |
1743 | |
1744 // last flag entry is always NULL, so subtract 1 | |
1745 int nFlags = (int) Flag::numFlags - 1; | |
1746 Handle null_h; | |
1747 int num_entries = 0; | |
1748 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1749 Flag* flag = &Flag::flags[i]; | |
350 | 1750 // Exclude the locked (diagnostic, experimental) flags |
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1751 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1752 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1753 num_entries++; |
1754 } | |
1755 } | |
1756 return num_entries; | |
1757 } | |
1758 JVM_END | |
1759 | |
1760 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1761 ResourceMark rm(THREAD); | |
1762 | |
1763 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1764 if (fn == NULL) { | |
1765 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1766 "The flag name cannot be null."); | |
1767 } | |
1768 char* name = java_lang_String::as_utf8_string(fn); | |
1769 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1770 if (flag == NULL) { | |
1771 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1772 "Flag does not exist."); | |
1773 } | |
1774 if (!flag->is_writeable()) { | |
1775 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1776 "This flag is not writeable."); | |
1777 } | |
1778 | |
1779 bool succeed; | |
1780 if (flag->is_bool()) { | |
1781 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
1782 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
1783 } else if (flag->is_intx()) { | |
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1784 intx ivalue = (intx)new_value.j; |
0 | 1785 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
1786 } else if (flag->is_uintx()) { | |
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1787 uintx uvalue = (uintx)new_value.j; |
0 | 1788 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1789 } else if (flag->is_uint64_t()) { |
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1790 uint64_t uvalue = (uint64_t)new_value.j; |
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1791 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
0 | 1792 } else if (flag->is_ccstr()) { |
1793 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1794 if (str == NULL) { | |
1795 THROW(vmSymbols::java_lang_NullPointerException()); | |
1796 } | |
1797 ccstr svalue = java_lang_String::as_utf8_string(str); | |
1798 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
1799 } | |
1800 assert(succeed, "Setting flag should succeed"); | |
1801 JVM_END | |
1802 | |
1803 class ThreadTimesClosure: public ThreadClosure { | |
1804 private: | |
1805 objArrayOop _names; | |
1806 typeArrayOop _times; | |
1807 int _names_len; | |
1808 int _times_len; | |
1809 int _count; | |
1810 | |
1811 public: | |
1812 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
1813 virtual void do_thread(Thread* thread); | |
1814 int count() { return _count; } | |
1815 }; | |
1816 | |
1817 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
1818 typeArrayOop times) { | |
1819 assert(names != NULL, "names was NULL"); | |
1820 assert(times != NULL, "times was NULL"); | |
1821 _names = names; | |
1822 _names_len = names->length(); | |
1823 _times = times; | |
1824 _times_len = times->length(); | |
1825 _count = 0; | |
1826 } | |
1827 | |
1828 void ThreadTimesClosure::do_thread(Thread* thread) { | |
1829 Handle s; | |
1830 assert(thread != NULL, "thread was NULL"); | |
1831 | |
1832 // exclude externally visible JavaThreads | |
1833 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1834 return; | |
1835 } | |
1836 | |
1837 if (_count >= _names_len || _count >= _times_len) { | |
1838 // skip if the result array is not big enough | |
1839 return; | |
1840 } | |
1841 | |
1842 EXCEPTION_MARK; | |
1843 | |
1844 assert(thread->name() != NULL, "All threads should have a name"); | |
1845 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
1846 _names->obj_at_put(_count, s()); | |
1847 | |
1848 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
1849 os::thread_cpu_time(thread) : -1); | |
1850 _count++; | |
1851 } | |
1852 | |
1853 // Fills names with VM internal thread names and times with the corresponding | |
1854 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1855 // If the element type of names is not String, an IllegalArgumentException is | |
1856 // thrown. | |
1857 // If an array is not large enough to hold all the entries, only the entries | |
1858 // that fit will be returned. Return value is the number of VM internal | |
1859 // threads entries. | |
1860 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1861 jobjectArray names, | |
1862 jlongArray times)) | |
1863 if (names == NULL || times == NULL) { | |
1864 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1865 } | |
1866 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1867 objArrayHandle names_ah(THREAD, na); | |
1868 | |
1869 // Make sure we have a String array | |
1870 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1871 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1872 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1873 "Array element type is not String class", 0); | |
1874 } | |
1875 | |
1876 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1877 typeArrayHandle times_ah(THREAD, ta); | |
1878 | |
1879 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
1880 { | |
1881 MutexLockerEx ml(Threads_lock); | |
1882 Threads::threads_do(&ttc); | |
1883 } | |
1884 | |
1885 return ttc.count(); | |
1886 JVM_END | |
1887 | |
1888 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1889 ResourceMark rm(THREAD); | |
1890 | |
1891 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1892 VMThread::execute(&op); | |
1893 | |
1894 DeadlockCycle* deadlocks = op.result(); | |
1895 if (deadlocks == NULL) { | |
1896 // no deadlock found and return | |
1897 return Handle(); | |
1898 } | |
1899 | |
1900 int num_threads = 0; | |
1901 DeadlockCycle* cycle; | |
1902 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1903 num_threads += cycle->num_threads(); | |
1904 } | |
1905 | |
1142 | 1906 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1907 objArrayHandle threads_ah(THREAD, r); |
1908 | |
1909 int index = 0; | |
1910 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1911 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1912 int len = deadlock_threads->length(); | |
1913 for (int i = 0; i < len; i++) { | |
1914 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1915 index++; | |
1916 } | |
1917 } | |
1918 return threads_ah; | |
1919 } | |
1920 | |
1921 // Finds cycles of threads that are deadlocked involved in object monitors | |
1922 // and JSR-166 synchronizers. | |
1923 // Returns an array of Thread objects which are in deadlock, if any. | |
1924 // Otherwise, returns NULL. | |
1925 // | |
1926 // Input parameter: | |
1927 // object_monitors_only - if true, only check object monitors | |
1928 // | |
1929 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1930 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1931 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1932 JVM_END | |
1933 | |
1934 // Finds cycles of threads that are deadlocked on monitor locks | |
1935 // Returns an array of Thread objects which are in deadlock, if any. | |
1936 // Otherwise, returns NULL. | |
1937 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1938 Handle result = find_deadlocks(true, CHECK_0); | |
1939 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1940 JVM_END | |
1941 | |
1942 // Gets the information about GC extension attributes including | |
1943 // the name of the attribute, its type, and a short description. | |
1944 // | |
1945 // Input parameters: | |
1946 // mgr - GC memory manager | |
1947 // info - caller allocated array of jmmExtAttributeInfo | |
1948 // count - number of elements of the info array | |
1949 // | |
1950 // Returns the number of GC extension attributes filled in the info array; or | |
1951 // -1 if info is not big enough | |
1952 // | |
1953 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1954 // All GC memory managers have 1 attribute (number of GC threads) | |
1955 if (count == 0) { | |
1956 return 0; | |
1957 } | |
1958 | |
1959 if (info == NULL) { | |
1960 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1961 } | |
1962 | |
1963 info[0].name = "GcThreadCount"; | |
1964 info[0].type = 'I'; | |
1965 info[0].description = "Number of GC threads"; | |
1966 return 1; | |
1967 JVM_END | |
1968 | |
1969 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1970 // of a given length and return the objArrayOop | |
1971 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1972 if (array == NULL) { | |
1973 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1974 } | |
1975 | |
1976 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1977 objArrayHandle array_h(THREAD, oa); | |
1978 | |
1979 // array must be of the given length | |
1980 if (length != array_h->length()) { | |
1981 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1982 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
1983 } | |
1984 | |
1985 // check if the element of array is of type MemoryUsage class | |
1986 klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); | |
1987 klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); | |
1988 if (element_klass != usage_klass) { | |
1989 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1990 "The element type is not MemoryUsage class", 0); | |
1991 } | |
1992 | |
1993 return array_h(); | |
1994 } | |
1995 | |
1996 // Gets the statistics of the last GC of a given GC memory manager. | |
1997 // Input parameters: | |
1998 // obj - GarbageCollectorMXBean object | |
1999 // gc_stat - caller allocated jmmGCStat where: | |
2000 // a. before_gc_usage - array of MemoryUsage objects | |
2001 // b. after_gc_usage - array of MemoryUsage objects | |
2002 // c. gc_ext_attributes_values_size is set to the | |
2003 // gc_ext_attribute_values array allocated | |
2004 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
2005 // | |
2006 // On return, | |
2007 // gc_index == 0 indicates no GC statistics available | |
2008 // | |
2009 // before_gc_usage and after_gc_usage - filled with per memory pool | |
2010 // before and after GC usage in the same order as the memory pools | |
2011 // returned by GetMemoryPools for a given GC memory manager. | |
2012 // num_gc_ext_attributes indicates the number of elements in | |
2013 // the gc_ext_attribute_values array is filled; or | |
2014 // -1 if the gc_ext_attributes_values array is not big enough | |
2015 // | |
2016 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
2017 ResourceMark rm(THREAD); | |
2018 | |
2019 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
2020 THROW(vmSymbols::java_lang_NullPointerException()); | |
2021 } | |
2022 | |
2023 // Get the GCMemoryManager | |
2024 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
2025 | |
2026 // Make a copy of the last GC statistics | |
2027 // GC may occur while constructing the last GC information | |
2028 int num_pools = MemoryService::num_memory_pools(); | |
2029 GCStatInfo* stat = new GCStatInfo(num_pools); | |
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2030 if (mgr->get_last_gc_stat(stat) == 0) { |
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2031 gc_stat->gc_index = 0; |
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2032 return; |
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2033 } |
0 | 2034 |
2035 gc_stat->gc_index = stat->gc_index(); | |
2036 gc_stat->start_time = Management::ticks_to_ms(stat->start_time()); | |
2037 gc_stat->end_time = Management::ticks_to_ms(stat->end_time()); | |
2038 | |
2039 // Current implementation does not have GC extension attributes | |
2040 gc_stat->num_gc_ext_attributes = 0; | |
2041 | |
2042 // Fill the arrays of MemoryUsage objects with before and after GC | |
2043 // per pool memory usage | |
2044 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2045 num_pools, | |
2046 CHECK); | |
2047 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2048 | |
2049 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2050 num_pools, | |
2051 CHECK); | |
2052 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2053 | |
2054 for (int i = 0; i < num_pools; i++) { | |
2055 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK); | |
2056 Handle after_usage; | |
2057 | |
2058 MemoryUsage u = stat->after_gc_usage_for_pool(i); | |
2059 if (u.max_size() == 0 && u.used() > 0) { | |
2060 // If max size == 0, this pool is a survivor space. | |
2061 // Set max size = -1 since the pools will be swapped after GC. | |
2062 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2063 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2064 } else { | |
2065 after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK); | |
2066 } | |
2067 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2068 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2069 } | |
2070 | |
2071 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2072 // Current implementation only has 1 attribute (number of GC threads) | |
2073 // The type is 'I' | |
2074 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2075 } | |
2076 JVM_END | |
2077 | |
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2078 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) |
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2079 ResourceMark rm(THREAD); |
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2080 // Get the GCMemoryManager |
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2081 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
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2082 mgr->set_notification_enabled(enabled?true:false); |
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2083 JVM_END |
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2084 |
0 | 2085 // Dump heap - Returns 0 if succeeds. |
2086 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
2087 #ifndef SERVICES_KERNEL | |
2088 ResourceMark rm(THREAD); | |
2089 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2090 if (on == NULL) { | |
2091 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2092 "Output file name cannot be null.", -1); | |
2093 } | |
2094 char* name = java_lang_String::as_utf8_string(on); | |
2095 if (name == NULL) { | |
2096 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2097 "Output file name cannot be null.", -1); | |
2098 } | |
2099 HeapDumper dumper(live ? true : false); | |
2100 if (dumper.dump(name) != 0) { | |
2101 const char* errmsg = dumper.error_as_C_string(); | |
2102 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2103 } | |
2104 return 0; | |
2105 #else // SERVICES_KERNEL | |
2106 return -1; | |
2107 #endif // SERVICES_KERNEL | |
2108 JVM_END | |
2109 | |
2110 jlong Management::ticks_to_ms(jlong ticks) { | |
2111 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2112 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2113 * (double)1000.0); | |
2114 } | |
2115 | |
2116 const struct jmmInterface_1_ jmm_interface = { | |
2117 NULL, | |
2118 NULL, | |
2119 jmm_GetVersion, | |
2120 jmm_GetOptionalSupport, | |
2121 jmm_GetInputArguments, | |
2122 jmm_GetThreadInfo, | |
2123 jmm_GetInputArgumentArray, | |
2124 jmm_GetMemoryPools, | |
2125 jmm_GetMemoryManagers, | |
2126 jmm_GetMemoryPoolUsage, | |
2127 jmm_GetPeakMemoryPoolUsage, | |
2100
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changeset
|
2128 jmm_GetThreadAllocatedMemory, |
0 | 2129 jmm_GetMemoryUsage, |
2130 jmm_GetLongAttribute, | |
2131 jmm_GetBoolAttribute, | |
2132 jmm_SetBoolAttribute, | |
2133 jmm_GetLongAttributes, | |
2134 jmm_FindMonitorDeadlockedThreads, | |
2135 jmm_GetThreadCpuTime, | |
2136 jmm_GetVMGlobalNames, | |
2137 jmm_GetVMGlobals, | |
2138 jmm_GetInternalThreadTimes, | |
2139 jmm_ResetStatistic, | |
2140 jmm_SetPoolSensor, | |
2141 jmm_SetPoolThreshold, | |
2142 jmm_GetPoolCollectionUsage, | |
2143 jmm_GetGCExtAttributeInfo, | |
2144 jmm_GetLastGCStat, | |
2145 jmm_GetThreadCpuTimeWithKind, | |
2100
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7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
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1972
diff
changeset
|
2146 jmm_GetThreadCpuTimesWithKind, |
0 | 2147 jmm_DumpHeap0, |
2148 jmm_FindDeadlockedThreads, | |
2149 jmm_SetVMGlobal, | |
2150 NULL, | |
3356
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|
2151 jmm_DumpThreads, |
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diff
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|
2152 jmm_SetGCNotificationEnabled |
0 | 2153 }; |
2154 | |
2155 void* Management::get_jmm_interface(int version) { | |
2156 if (version == JMM_VERSION_1_0) { | |
2157 return (void*) &jmm_interface; | |
2158 } | |
2159 return NULL; | |
2160 } |