Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 6616:7a302948f5a4
7192167: JSR 292: C1 has old broken code which needs to be removed
Reviewed-by: kvn, roland, jrose
author | twisti |
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date | Tue, 21 Aug 2012 10:48:50 -0700 |
parents | d2a62e0f25eb |
children | da91efe96a93 |
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" | |
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36 #include "runtime/globals.hpp" |
1972 | 37 #include "runtime/handles.inline.hpp" |
38 #include "runtime/interfaceSupport.hpp" | |
39 #include "runtime/javaCalls.hpp" | |
40 #include "runtime/jniHandles.hpp" | |
41 #include "runtime/os.hpp" | |
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42 #include "runtime/serviceThread.hpp" |
1972 | 43 #include "services/classLoadingService.hpp" |
4133 | 44 #include "services/diagnosticCommand.hpp" |
45 #include "services/diagnosticFramework.hpp" | |
1972 | 46 #include "services/heapDumper.hpp" |
4133 | 47 #include "services/jmm.h" |
1972 | 48 #include "services/lowMemoryDetector.hpp" |
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49 #include "services/gcNotifier.hpp" |
6197 | 50 #include "services/nmtDCmd.hpp" |
1972 | 51 #include "services/management.hpp" |
52 #include "services/memoryManager.hpp" | |
53 #include "services/memoryPool.hpp" | |
54 #include "services/memoryService.hpp" | |
55 #include "services/runtimeService.hpp" | |
56 #include "services/threadService.hpp" | |
0 | 57 |
58 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
59 PerfVariable* Management::_end_vm_creation_time = NULL; | |
60 PerfVariable* Management::_vm_init_done_time = NULL; | |
61 | |
62 klassOop Management::_sensor_klass = NULL; | |
63 klassOop Management::_threadInfo_klass = NULL; | |
64 klassOop Management::_memoryUsage_klass = NULL; | |
65 klassOop Management::_memoryPoolMXBean_klass = NULL; | |
66 klassOop Management::_memoryManagerMXBean_klass = NULL; | |
67 klassOop Management::_garbageCollectorMXBean_klass = NULL; | |
68 klassOop Management::_managementFactory_klass = NULL; | |
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69 klassOop Management::_garbageCollectorImpl_klass = NULL; |
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70 klassOop Management::_gcInfo_klass = NULL; |
0 | 71 |
72 jmmOptionalSupport Management::_optional_support = {0}; | |
73 TimeStamp Management::_stamp; | |
74 | |
75 void management_init() { | |
76 Management::init(); | |
77 ThreadService::init(); | |
78 RuntimeService::init(); | |
79 ClassLoadingService::init(); | |
80 } | |
81 | |
82 void Management::init() { | |
83 EXCEPTION_MARK; | |
84 | |
85 // These counters are for java.lang.management API support. | |
86 // They are created even if -XX:-UsePerfData is set and in | |
87 // that case, they will be allocated on C heap. | |
88 | |
89 _begin_vm_creation_time = | |
90 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
91 PerfData::U_None, CHECK); | |
92 | |
93 _end_vm_creation_time = | |
94 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
95 PerfData::U_None, CHECK); | |
96 | |
97 _vm_init_done_time = | |
98 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
99 PerfData::U_None, CHECK); | |
100 | |
101 // Initialize optional support | |
102 _optional_support.isLowMemoryDetectionSupported = 1; | |
103 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
104 _optional_support.isThreadContentionMonitoringSupported = 1; | |
105 | |
106 if (os::is_thread_cpu_time_supported()) { | |
107 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
108 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
109 } else { | |
110 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
111 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
112 } | |
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113 |
0 | 114 _optional_support.isBootClassPathSupported = 1; |
115 _optional_support.isObjectMonitorUsageSupported = 1; | |
116 #ifndef SERVICES_KERNEL | |
117 // This depends on the heap inspector | |
118 _optional_support.isSynchronizerUsageSupported = 1; | |
119 #endif // SERVICES_KERNEL | |
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120 _optional_support.isThreadAllocatedMemorySupported = 1; |
4133 | 121 |
4773 | 122 // Registration of the diagnostic commands |
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123 DCmdRegistrant::register_dcmds(); |
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124 DCmdRegistrant::register_dcmds_ext(); |
6197 | 125 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(true, false)); |
0 | 126 } |
127 | |
128 void Management::initialize(TRAPS) { | |
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129 // Start the service thread |
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130 ServiceThread::initialize(); |
0 | 131 |
132 if (ManagementServer) { | |
133 ResourceMark rm(THREAD); | |
134 HandleMark hm(THREAD); | |
135 | |
136 // Load and initialize the sun.management.Agent class | |
137 // invoke startAgent method to start the management server | |
138 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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139 klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 140 loader, |
141 Handle(), | |
142 true, | |
143 CHECK); | |
144 instanceKlassHandle ik (THREAD, k); | |
145 | |
146 JavaValue result(T_VOID); | |
147 JavaCalls::call_static(&result, | |
148 ik, | |
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149 vmSymbols::startAgent_name(), |
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150 vmSymbols::void_method_signature(), |
0 | 151 CHECK); |
152 } | |
153 } | |
154 | |
155 void Management::get_optional_support(jmmOptionalSupport* support) { | |
156 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
157 } | |
158 | |
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159 klassOop Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
0 | 160 klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
161 instanceKlassHandle ik (THREAD, k); | |
162 if (ik->should_be_initialized()) { | |
163 ik->initialize(CHECK_NULL); | |
164 } | |
165 return ik(); | |
166 } | |
167 | |
168 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
169 // if the performance counter is not initialized, | |
170 // then vm initialization failed; simply return. | |
171 if (_begin_vm_creation_time == NULL) return; | |
172 | |
173 _begin_vm_creation_time->set_value(begin); | |
174 _end_vm_creation_time->set_value(begin + duration); | |
175 PerfMemory::set_accessible(true); | |
176 } | |
177 | |
178 jlong Management::timestamp() { | |
179 TimeStamp t; | |
180 t.update(); | |
181 return t.ticks() - _stamp.ticks(); | |
182 } | |
183 | |
184 void Management::oops_do(OopClosure* f) { | |
185 MemoryService::oops_do(f); | |
186 ThreadService::oops_do(f); | |
187 | |
188 f->do_oop((oop*) &_sensor_klass); | |
189 f->do_oop((oop*) &_threadInfo_klass); | |
190 f->do_oop((oop*) &_memoryUsage_klass); | |
191 f->do_oop((oop*) &_memoryPoolMXBean_klass); | |
192 f->do_oop((oop*) &_memoryManagerMXBean_klass); | |
193 f->do_oop((oop*) &_garbageCollectorMXBean_klass); | |
194 f->do_oop((oop*) &_managementFactory_klass); | |
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195 f->do_oop((oop*) &_garbageCollectorImpl_klass); |
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196 f->do_oop((oop*) &_gcInfo_klass); |
0 | 197 } |
198 | |
199 klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { | |
200 if (_threadInfo_klass == NULL) { | |
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201 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 202 } |
203 return _threadInfo_klass; | |
204 } | |
205 | |
206 klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { | |
207 if (_memoryUsage_klass == NULL) { | |
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208 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 209 } |
210 return _memoryUsage_klass; | |
211 } | |
212 | |
213 klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { | |
214 if (_memoryPoolMXBean_klass == NULL) { | |
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215 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 216 } |
217 return _memoryPoolMXBean_klass; | |
218 } | |
219 | |
220 klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { | |
221 if (_memoryManagerMXBean_klass == NULL) { | |
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222 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 223 } |
224 return _memoryManagerMXBean_klass; | |
225 } | |
226 | |
227 klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { | |
228 if (_garbageCollectorMXBean_klass == NULL) { | |
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229 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 230 } |
231 return _garbageCollectorMXBean_klass; | |
232 } | |
233 | |
234 klassOop Management::sun_management_Sensor_klass(TRAPS) { | |
235 if (_sensor_klass == NULL) { | |
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236 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 237 } |
238 return _sensor_klass; | |
239 } | |
240 | |
241 klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { | |
242 if (_managementFactory_klass == NULL) { | |
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243 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 244 } |
245 return _managementFactory_klass; | |
246 } | |
247 | |
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248 klassOop Management::sun_management_GarbageCollectorImpl_klass(TRAPS) { |
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249 if (_garbageCollectorImpl_klass == NULL) { |
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250 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL); |
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251 } |
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252 return _garbageCollectorImpl_klass; |
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253 } |
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254 |
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255 klassOop Management::com_sun_management_GcInfo_klass(TRAPS) { |
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256 if (_gcInfo_klass == NULL) { |
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257 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); |
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258 } |
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259 return _gcInfo_klass; |
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260 } |
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261 |
0 | 262 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
263 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
264 | |
265 jlong contended_time; | |
266 jlong waited_time; | |
267 if (ThreadService::is_thread_monitoring_contention()) { | |
268 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
269 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
270 } else { | |
271 // set them to -1 if thread contention monitoring is disabled. | |
272 contended_time = max_julong; | |
273 waited_time = max_julong; | |
274 } | |
275 | |
276 int thread_status = snapshot->thread_status(); | |
277 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
278 if (snapshot->is_ext_suspended()) { | |
279 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
280 } | |
281 if (snapshot->is_in_native()) { | |
282 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
283 } | |
284 | |
285 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
286 Handle stacktrace_h; | |
287 if (st != NULL) { | |
288 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
289 } else { | |
290 stacktrace_h = Handle(); | |
291 } | |
292 | |
293 args->push_oop(snapshot_thread); | |
294 args->push_int(thread_status); | |
295 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
296 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
297 args->push_long(snapshot->contended_enter_count()); | |
298 args->push_long(contended_time); | |
299 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
300 args->push_long(waited_time); | |
301 args->push_oop(stacktrace_h); | |
302 } | |
303 | |
304 // Helper function to construct a ThreadInfo object | |
305 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
306 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
307 instanceKlassHandle ik (THREAD, k); | |
308 | |
309 JavaValue result(T_VOID); | |
310 JavaCallArguments args(14); | |
311 | |
312 // First allocate a ThreadObj object and | |
313 // push the receiver as the first argument | |
314 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
315 args.push_oop(element); | |
316 | |
317 // initialize the arguments for the ThreadInfo constructor | |
318 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
319 | |
320 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
321 JavaCalls::call_special(&result, | |
322 ik, | |
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323 vmSymbols::object_initializer_name(), |
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324 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 325 &args, |
326 CHECK_NULL); | |
327 | |
328 return (instanceOop) element(); | |
329 } | |
330 | |
331 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
332 objArrayHandle monitors_array, | |
333 typeArrayHandle depths_array, | |
334 objArrayHandle synchronizers_array, | |
335 TRAPS) { | |
336 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
337 instanceKlassHandle ik (THREAD, k); | |
338 | |
339 JavaValue result(T_VOID); | |
340 JavaCallArguments args(17); | |
341 | |
342 // First allocate a ThreadObj object and | |
343 // push the receiver as the first argument | |
344 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
345 args.push_oop(element); | |
346 | |
347 // initialize the arguments for the ThreadInfo constructor | |
348 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
349 | |
350 // push the locked monitors and synchronizers in the arguments | |
351 args.push_oop(monitors_array); | |
352 args.push_oop(depths_array); | |
353 args.push_oop(synchronizers_array); | |
354 | |
355 // Call ThreadInfo constructor with locked monitors and synchronizers | |
356 JavaCalls::call_special(&result, | |
357 ik, | |
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358 vmSymbols::object_initializer_name(), |
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359 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 360 &args, |
361 CHECK_NULL); | |
362 | |
363 return (instanceOop) element(); | |
364 } | |
365 | |
366 // Helper functions | |
367 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
368 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
369 | |
370 JavaThread* java_thread = NULL; | |
371 // Sequential search for now. Need to do better optimization later. | |
372 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
373 oop tobj = thread->threadObj(); | |
374 if (!thread->is_exiting() && | |
375 tobj != NULL && | |
376 thread_id == java_lang_Thread::thread_id(tobj)) { | |
377 java_thread = thread; | |
378 break; | |
379 } | |
380 } | |
381 return java_thread; | |
382 } | |
383 | |
384 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
385 if (mgr == NULL) { | |
386 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
387 } | |
388 oop mgr_obj = JNIHandles::resolve(mgr); | |
389 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
390 | |
391 klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); | |
392 if (!h->is_a(k)) { | |
393 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
394 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
395 NULL); | |
396 } | |
397 | |
398 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
399 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
400 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
401 "Invalid GC memory manager", | |
402 NULL); | |
403 } | |
404 return (GCMemoryManager*) gc; | |
405 } | |
406 | |
407 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
408 if (obj == NULL) { | |
409 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
410 } | |
411 | |
412 oop pool_obj = JNIHandles::resolve(obj); | |
413 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
414 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
415 | |
416 return MemoryService::get_memory_pool(ph); | |
417 } | |
418 | |
419 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
420 int num_threads = ids_ah->length(); | |
421 | |
422 // Validate input thread IDs | |
423 int i = 0; | |
424 for (i = 0; i < num_threads; i++) { | |
425 jlong tid = ids_ah->long_at(i); | |
426 if (tid <= 0) { | |
427 // throw exception if invalid thread id. | |
428 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
429 "Invalid thread ID entry"); | |
430 } | |
431 } | |
432 } | |
433 | |
434 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
435 // check if the element of infoArray is of type ThreadInfo class | |
436 klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); | |
437 klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); | |
438 if (element_klass != threadinfo_klass) { | |
439 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
440 "infoArray element type is not ThreadInfo class"); | |
441 } | |
442 } | |
443 | |
444 | |
445 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
446 if (obj == NULL) { | |
447 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
448 } | |
449 | |
450 oop mgr_obj = JNIHandles::resolve(obj); | |
451 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
452 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
453 | |
454 return MemoryService::get_memory_manager(mh); | |
455 } | |
456 | |
457 // Returns a version string and sets major and minor version if | |
458 // the input parameters are non-null. | |
459 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
460 return JMM_VERSION; | |
461 JVM_END | |
462 | |
463 // Gets the list of VM monitoring and management optional supports | |
464 // Returns 0 if succeeded; otherwise returns non-zero. | |
465 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
466 if (support == NULL) { | |
467 return -1; | |
468 } | |
469 Management::get_optional_support(support); | |
470 return 0; | |
471 JVM_END | |
472 | |
473 // Returns a java.lang.String object containing the input arguments to the VM. | |
474 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
475 ResourceMark rm(THREAD); | |
476 | |
477 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
478 return NULL; | |
479 } | |
480 | |
481 char** vm_flags = Arguments::jvm_flags_array(); | |
482 char** vm_args = Arguments::jvm_args_array(); | |
483 int num_flags = Arguments::num_jvm_flags(); | |
484 int num_args = Arguments::num_jvm_args(); | |
485 | |
486 size_t length = 1; // null terminator | |
487 int i; | |
488 for (i = 0; i < num_flags; i++) { | |
489 length += strlen(vm_flags[i]); | |
490 } | |
491 for (i = 0; i < num_args; i++) { | |
492 length += strlen(vm_args[i]); | |
493 } | |
494 // add a space between each argument | |
495 length += num_flags + num_args - 1; | |
496 | |
497 // Return the list of input arguments passed to the VM | |
498 // and preserve the order that the VM processes. | |
499 char* args = NEW_RESOURCE_ARRAY(char, length); | |
500 args[0] = '\0'; | |
501 // concatenate all jvm_flags | |
502 if (num_flags > 0) { | |
503 strcat(args, vm_flags[0]); | |
504 for (i = 1; i < num_flags; i++) { | |
505 strcat(args, " "); | |
506 strcat(args, vm_flags[i]); | |
507 } | |
508 } | |
509 | |
510 if (num_args > 0 && num_flags > 0) { | |
511 // append a space if args already contains one or more jvm_flags | |
512 strcat(args, " "); | |
513 } | |
514 | |
515 // concatenate all jvm_args | |
516 if (num_args > 0) { | |
517 strcat(args, vm_args[0]); | |
518 for (i = 1; i < num_args; i++) { | |
519 strcat(args, " "); | |
520 strcat(args, vm_args[i]); | |
521 } | |
522 } | |
523 | |
524 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
525 return JNIHandles::make_local(env, hargs()); | |
526 JVM_END | |
527 | |
528 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
529 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
530 ResourceMark rm(THREAD); | |
531 | |
532 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
533 return NULL; | |
534 } | |
535 | |
536 char** vm_flags = Arguments::jvm_flags_array(); | |
537 char** vm_args = Arguments::jvm_args_array(); | |
538 int num_flags = Arguments::num_jvm_flags(); | |
539 int num_args = Arguments::num_jvm_args(); | |
540 | |
1142 | 541 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 542 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
543 objArrayHandle result_h(THREAD, r); | |
544 | |
545 int index = 0; | |
546 for (int j = 0; j < num_flags; j++, index++) { | |
547 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
548 result_h->obj_at_put(index, h()); | |
549 } | |
550 for (int i = 0; i < num_args; i++, index++) { | |
551 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
552 result_h->obj_at_put(index, h()); | |
553 } | |
554 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
555 JVM_END | |
556 | |
557 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
558 // one for each memory pool if obj == null; otherwise returns | |
559 // an array of memory pools for a given memory manager if | |
560 // it is a valid memory manager. | |
561 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
562 ResourceMark rm(THREAD); | |
563 | |
564 int num_memory_pools; | |
565 MemoryManager* mgr = NULL; | |
566 if (obj == NULL) { | |
567 num_memory_pools = MemoryService::num_memory_pools(); | |
568 } else { | |
569 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
570 if (mgr == NULL) { | |
571 return NULL; | |
572 } | |
573 num_memory_pools = mgr->num_memory_pools(); | |
574 } | |
575 | |
576 // Allocate the resulting MemoryPoolMXBean[] object | |
577 klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); | |
578 instanceKlassHandle ik (THREAD, k); | |
579 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
580 objArrayHandle poolArray(THREAD, r); | |
581 | |
582 if (mgr == NULL) { | |
583 // Get all memory pools | |
584 for (int i = 0; i < num_memory_pools; i++) { | |
585 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
586 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
587 instanceHandle ph(THREAD, p); | |
588 poolArray->obj_at_put(i, ph()); | |
589 } | |
590 } else { | |
591 // Get memory pools managed by a given memory manager | |
592 for (int i = 0; i < num_memory_pools; i++) { | |
593 MemoryPool* pool = mgr->get_memory_pool(i); | |
594 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
595 instanceHandle ph(THREAD, p); | |
596 poolArray->obj_at_put(i, ph()); | |
597 } | |
598 } | |
599 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
600 JVM_END | |
601 | |
602 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
603 // one for each memory manager if obj == null; otherwise returns | |
604 // an array of memory managers for a given memory pool if | |
605 // it is a valid memory pool. | |
606 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
607 ResourceMark rm(THREAD); | |
608 | |
609 int num_mgrs; | |
610 MemoryPool* pool = NULL; | |
611 if (obj == NULL) { | |
612 num_mgrs = MemoryService::num_memory_managers(); | |
613 } else { | |
614 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
615 if (pool == NULL) { | |
616 return NULL; | |
617 } | |
618 num_mgrs = pool->num_memory_managers(); | |
619 } | |
620 | |
621 // Allocate the resulting MemoryManagerMXBean[] object | |
622 klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); | |
623 instanceKlassHandle ik (THREAD, k); | |
624 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
625 objArrayHandle mgrArray(THREAD, r); | |
626 | |
627 if (pool == NULL) { | |
628 // Get all memory managers | |
629 for (int i = 0; i < num_mgrs; i++) { | |
630 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
631 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
632 instanceHandle ph(THREAD, p); | |
633 mgrArray->obj_at_put(i, ph()); | |
634 } | |
635 } else { | |
636 // Get memory managers for a given memory pool | |
637 for (int i = 0; i < num_mgrs; i++) { | |
638 MemoryManager* mgr = pool->get_memory_manager(i); | |
639 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
640 instanceHandle ph(THREAD, p); | |
641 mgrArray->obj_at_put(i, ph()); | |
642 } | |
643 } | |
644 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
645 JVM_END | |
646 | |
647 | |
648 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
649 // of a given memory pool. | |
650 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
651 ResourceMark rm(THREAD); | |
652 | |
653 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
654 if (pool != NULL) { | |
655 MemoryUsage usage = pool->get_memory_usage(); | |
656 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
657 return JNIHandles::make_local(env, h()); | |
658 } else { | |
659 return NULL; | |
660 } | |
661 JVM_END | |
662 | |
663 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
664 // of a given memory pool. | |
665 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
666 ResourceMark rm(THREAD); | |
667 | |
668 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
669 if (pool != NULL) { | |
670 MemoryUsage usage = pool->get_peak_memory_usage(); | |
671 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
672 return JNIHandles::make_local(env, h()); | |
673 } else { | |
674 return NULL; | |
675 } | |
676 JVM_END | |
677 | |
678 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
679 // of a given memory pool after most recent GC. | |
680 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
681 ResourceMark rm(THREAD); | |
682 | |
683 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
684 if (pool != NULL && pool->is_collected_pool()) { | |
685 MemoryUsage usage = pool->get_last_collection_usage(); | |
686 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
687 return JNIHandles::make_local(env, h()); | |
688 } else { | |
689 return NULL; | |
690 } | |
691 JVM_END | |
692 | |
693 // Sets the memory pool sensor for a threshold type | |
694 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
695 if (obj == NULL || sensorObj == NULL) { | |
696 THROW(vmSymbols::java_lang_NullPointerException()); | |
697 } | |
698 | |
699 klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); | |
700 oop s = JNIHandles::resolve(sensorObj); | |
701 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
702 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
703 if (!sensor_h->is_a(sensor_klass)) { | |
704 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
705 "Sensor is not an instance of sun.management.Sensor class"); | |
706 } | |
707 | |
708 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
709 assert(mpool != NULL, "MemoryPool should exist"); | |
710 | |
711 switch (type) { | |
712 case JMM_USAGE_THRESHOLD_HIGH: | |
713 case JMM_USAGE_THRESHOLD_LOW: | |
714 // have only one sensor for threshold high and low | |
715 mpool->set_usage_sensor_obj(sensor_h); | |
716 break; | |
717 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
718 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
719 // have only one sensor for threshold high and low | |
720 mpool->set_gc_usage_sensor_obj(sensor_h); | |
721 break; | |
722 default: | |
723 assert(false, "Unrecognized type"); | |
724 } | |
725 | |
726 JVM_END | |
727 | |
728 | |
729 // Sets the threshold of a given memory pool. | |
730 // Returns the previous threshold. | |
731 // | |
732 // Input parameters: | |
733 // pool - the MemoryPoolMXBean object | |
734 // type - threshold type | |
735 // threshold - the new threshold (must not be negative) | |
736 // | |
737 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
738 if (threshold < 0) { | |
739 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
740 "Invalid threshold value", | |
741 -1); | |
742 } | |
743 | |
489
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744 if ((size_t)threshold > max_uintx) { |
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745 stringStream st; |
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746 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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747 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 748 } |
749 | |
750 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
751 assert(pool != NULL, "MemoryPool should exist"); | |
752 | |
753 jlong prev = 0; | |
754 switch (type) { | |
755 case JMM_USAGE_THRESHOLD_HIGH: | |
756 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
757 return -1; | |
758 } | |
759 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
760 break; | |
761 | |
762 case JMM_USAGE_THRESHOLD_LOW: | |
763 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
764 return -1; | |
765 } | |
766 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
767 break; | |
768 | |
769 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
770 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
771 return -1; | |
772 } | |
773 // return and the new threshold is effective for the next GC | |
774 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
775 | |
776 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
777 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
778 return -1; | |
779 } | |
780 // return and the new threshold is effective for the next GC | |
781 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
782 | |
783 default: | |
784 assert(false, "Unrecognized type"); | |
785 return -1; | |
786 } | |
787 | |
788 // When the threshold is changed, reevaluate if the low memory | |
789 // detection is enabled. | |
790 if (prev != threshold) { | |
791 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
792 LowMemoryDetector::detect_low_memory(pool); | |
793 } | |
794 return prev; | |
795 JVM_END | |
796 | |
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797 // Gets an array containing the amount of memory allocated on the Java |
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798 // heap for a set of threads (in bytes). Each element of the array is |
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799 // the amount of memory allocated for the thread ID specified in the |
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800 // corresponding entry in the given array of thread IDs; or -1 if the |
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801 // thread does not exist or has terminated. |
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802 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
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803 jlongArray sizeArray)) |
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804 // Check if threads is null |
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805 if (ids == NULL || sizeArray == NULL) { |
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806 THROW(vmSymbols::java_lang_NullPointerException()); |
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807 } |
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808 |
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809 ResourceMark rm(THREAD); |
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810 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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811 typeArrayHandle ids_ah(THREAD, ta); |
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812 |
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813 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
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814 typeArrayHandle sizeArray_h(THREAD, sa); |
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815 |
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816 // validate the thread id array |
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817 validate_thread_id_array(ids_ah, CHECK); |
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818 |
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819 // sizeArray must be of the same length as the given array of thread IDs |
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820 int num_threads = ids_ah->length(); |
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821 if (num_threads != sizeArray_h->length()) { |
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822 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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823 "The length of the given long array does not match the length of " |
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824 "the given array of thread IDs"); |
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825 } |
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826 |
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827 MutexLockerEx ml(Threads_lock); |
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828 for (int i = 0; i < num_threads; i++) { |
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829 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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830 if (java_thread != NULL) { |
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831 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
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832 } |
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833 } |
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834 JVM_END |
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835 |
0 | 836 // Returns a java/lang/management/MemoryUsage object representing |
837 // the memory usage for the heap or non-heap memory. | |
838 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
839 ResourceMark rm(THREAD); | |
840 | |
841 // Calculate the memory usage | |
842 size_t total_init = 0; | |
843 size_t total_used = 0; | |
844 size_t total_committed = 0; | |
845 size_t total_max = 0; | |
846 bool has_undefined_init_size = false; | |
847 bool has_undefined_max_size = false; | |
848 | |
849 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
850 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
851 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
852 MemoryUsage u = pool->get_memory_usage(); | |
853 total_used += u.used(); | |
854 total_committed += u.committed(); | |
855 | |
856 // if any one of the memory pool has undefined init_size or max_size, | |
857 // set it to -1 | |
858 if (u.init_size() == (size_t)-1) { | |
859 has_undefined_init_size = true; | |
860 } | |
861 if (!has_undefined_init_size) { | |
862 total_init += u.init_size(); | |
863 } | |
864 | |
865 if (u.max_size() == (size_t)-1) { | |
866 has_undefined_max_size = true; | |
867 } | |
868 if (!has_undefined_max_size) { | |
869 total_max += u.max_size(); | |
870 } | |
871 } | |
872 } | |
873 | |
1757
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874 // In our current implementation, we make sure that all non-heap |
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875 // pools have defined init and max sizes. Heap pools do not matter, |
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876 // as we never use total_init and total_max for them. |
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877 assert(heap || !has_undefined_init_size, "Undefined init size"); |
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878 assert(heap || !has_undefined_max_size, "Undefined max size"); |
0 | 879 |
1064 | 880 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 881 total_used, |
882 total_committed, | |
883 (heap ? Universe::heap()->max_capacity() : total_max)); | |
884 | |
885 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
886 return JNIHandles::make_local(env, obj()); | |
887 JVM_END | |
888 | |
889 // Returns the boolean value of a given attribute. | |
890 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
891 switch (att) { | |
892 case JMM_VERBOSE_GC: | |
893 return MemoryService::get_verbose(); | |
894 case JMM_VERBOSE_CLASS: | |
895 return ClassLoadingService::get_verbose(); | |
896 case JMM_THREAD_CONTENTION_MONITORING: | |
897 return ThreadService::is_thread_monitoring_contention(); | |
898 case JMM_THREAD_CPU_TIME: | |
899 return ThreadService::is_thread_cpu_time_enabled(); | |
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900 case JMM_THREAD_ALLOCATED_MEMORY: |
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901 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 902 default: |
903 assert(0, "Unrecognized attribute"); | |
904 return false; | |
905 } | |
906 JVM_END | |
907 | |
908 // Sets the given boolean attribute and returns the previous value. | |
909 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
910 switch (att) { | |
911 case JMM_VERBOSE_GC: | |
912 return MemoryService::set_verbose(flag != 0); | |
913 case JMM_VERBOSE_CLASS: | |
914 return ClassLoadingService::set_verbose(flag != 0); | |
915 case JMM_THREAD_CONTENTION_MONITORING: | |
916 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
917 case JMM_THREAD_CPU_TIME: | |
918 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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919 case JMM_THREAD_ALLOCATED_MEMORY: |
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920 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 921 default: |
922 assert(0, "Unrecognized attribute"); | |
923 return false; | |
924 } | |
925 JVM_END | |
926 | |
927 | |
928 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
929 switch (att) { | |
930 case JMM_GC_TIME_MS: | |
931 return mgr->gc_time_ms(); | |
932 | |
933 case JMM_GC_COUNT: | |
934 return mgr->gc_count(); | |
935 | |
936 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
937 // current implementation only has 1 ext attribute | |
938 return 1; | |
939 | |
940 default: | |
941 assert(0, "Unrecognized GC attribute"); | |
942 return -1; | |
943 } | |
944 } | |
945 | |
946 class VmThreadCountClosure: public ThreadClosure { | |
947 private: | |
948 int _count; | |
949 public: | |
950 VmThreadCountClosure() : _count(0) {}; | |
951 void do_thread(Thread* thread); | |
952 int count() { return _count; } | |
953 }; | |
954 | |
955 void VmThreadCountClosure::do_thread(Thread* thread) { | |
956 // exclude externally visible JavaThreads | |
957 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
958 return; | |
959 } | |
960 | |
961 _count++; | |
962 } | |
963 | |
964 static jint get_vm_thread_count() { | |
965 VmThreadCountClosure vmtcc; | |
966 { | |
967 MutexLockerEx ml(Threads_lock); | |
968 Threads::threads_do(&vmtcc); | |
969 } | |
970 | |
971 return vmtcc.count(); | |
972 } | |
973 | |
974 static jint get_num_flags() { | |
975 // last flag entry is always NULL, so subtract 1 | |
976 int nFlags = (int) Flag::numFlags - 1; | |
977 int count = 0; | |
978 for (int i = 0; i < nFlags; i++) { | |
979 Flag* flag = &Flag::flags[i]; | |
350 | 980 // Exclude the locked (diagnostic, experimental) flags |
0 | 981 if (flag->is_unlocked() || flag->is_unlocker()) { |
982 count++; | |
983 } | |
984 } | |
985 return count; | |
986 } | |
987 | |
988 static jlong get_long_attribute(jmmLongAttribute att) { | |
989 switch (att) { | |
990 case JMM_CLASS_LOADED_COUNT: | |
991 return ClassLoadingService::loaded_class_count(); | |
992 | |
993 case JMM_CLASS_UNLOADED_COUNT: | |
994 return ClassLoadingService::unloaded_class_count(); | |
995 | |
996 case JMM_THREAD_TOTAL_COUNT: | |
997 return ThreadService::get_total_thread_count(); | |
998 | |
999 case JMM_THREAD_LIVE_COUNT: | |
1000 return ThreadService::get_live_thread_count(); | |
1001 | |
1002 case JMM_THREAD_PEAK_COUNT: | |
1003 return ThreadService::get_peak_thread_count(); | |
1004 | |
1005 case JMM_THREAD_DAEMON_COUNT: | |
1006 return ThreadService::get_daemon_thread_count(); | |
1007 | |
1008 case JMM_JVM_INIT_DONE_TIME_MS: | |
1009 return Management::vm_init_done_time(); | |
1010 | |
1011 case JMM_COMPILE_TOTAL_TIME_MS: | |
1012 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
1013 | |
1014 case JMM_OS_PROCESS_ID: | |
1015 return os::current_process_id(); | |
1016 | |
1017 // Hotspot-specific counters | |
1018 case JMM_CLASS_LOADED_BYTES: | |
1019 return ClassLoadingService::loaded_class_bytes(); | |
1020 | |
1021 case JMM_CLASS_UNLOADED_BYTES: | |
1022 return ClassLoadingService::unloaded_class_bytes(); | |
1023 | |
1024 case JMM_SHARED_CLASS_LOADED_COUNT: | |
1025 return ClassLoadingService::loaded_shared_class_count(); | |
1026 | |
1027 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
1028 return ClassLoadingService::unloaded_shared_class_count(); | |
1029 | |
1030 | |
1031 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1032 return ClassLoadingService::loaded_shared_class_bytes(); | |
1033 | |
1034 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1035 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1036 | |
1037 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1038 return ClassLoader::classloader_time_ms(); | |
1039 | |
1040 case JMM_VM_GLOBAL_COUNT: | |
1041 return get_num_flags(); | |
1042 | |
1043 case JMM_SAFEPOINT_COUNT: | |
1044 return RuntimeService::safepoint_count(); | |
1045 | |
1046 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1047 return RuntimeService::safepoint_sync_time_ms(); | |
1048 | |
1049 case JMM_TOTAL_STOPPED_TIME_MS: | |
1050 return RuntimeService::safepoint_time_ms(); | |
1051 | |
1052 case JMM_TOTAL_APP_TIME_MS: | |
1053 return RuntimeService::application_time_ms(); | |
1054 | |
1055 case JMM_VM_THREAD_COUNT: | |
1056 return get_vm_thread_count(); | |
1057 | |
1058 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1059 return ClassLoader::class_init_count(); | |
1060 | |
1061 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1062 return ClassLoader::class_init_time_ms(); | |
1063 | |
1064 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1065 return ClassLoader::class_verify_time_ms(); | |
1066 | |
1067 case JMM_METHOD_DATA_SIZE_BYTES: | |
1068 return ClassLoadingService::class_method_data_size(); | |
1069 | |
1070 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1071 return os::physical_memory(); | |
1072 | |
1073 default: | |
1074 return -1; | |
1075 } | |
1076 } | |
1077 | |
1078 | |
1079 // Returns the long value of a given attribute. | |
1080 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1081 if (obj == NULL) { | |
1082 return get_long_attribute(att); | |
1083 } else { | |
1084 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1085 if (mgr != NULL) { | |
1086 return get_gc_attribute(mgr, att); | |
1087 } | |
1088 } | |
1089 return -1; | |
1090 JVM_END | |
1091 | |
1092 // Gets the value of all attributes specified in the given array | |
1093 // and sets the value in the result array. | |
1094 // Returns the number of attributes found. | |
1095 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1096 jobject obj, | |
1097 jmmLongAttribute* atts, | |
1098 jint count, | |
1099 jlong* result)) | |
1100 | |
1101 int num_atts = 0; | |
1102 if (obj == NULL) { | |
1103 for (int i = 0; i < count; i++) { | |
1104 result[i] = get_long_attribute(atts[i]); | |
1105 if (result[i] != -1) { | |
1106 num_atts++; | |
1107 } | |
1108 } | |
1109 } else { | |
1110 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1111 for (int i = 0; i < count; i++) { | |
1112 result[i] = get_gc_attribute(mgr, atts[i]); | |
1113 if (result[i] != -1) { | |
1114 num_atts++; | |
1115 } | |
1116 } | |
1117 } | |
1118 return num_atts; | |
1119 JVM_END | |
1120 | |
1121 // Helper function to do thread dump for a specific list of threads | |
1122 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1123 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1124 int num_threads, | |
1125 int max_depth, | |
1126 bool with_locked_monitors, | |
1127 bool with_locked_synchronizers, | |
1128 TRAPS) { | |
1129 | |
1130 // First get an array of threadObj handles. | |
1131 // A JavaThread may terminate before we get the stack trace. | |
1132 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1133 { | |
1134 MutexLockerEx ml(Threads_lock); | |
1135 for (int i = 0; i < num_threads; i++) { | |
1136 jlong tid = ids_ah->long_at(i); | |
1137 JavaThread* jt = find_java_thread_from_id(tid); | |
1138 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
1139 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1140 thread_handle_array->append(threadObj_h); | |
1141 } | |
1142 } | |
1143 | |
1144 // Obtain thread dumps and thread snapshot information | |
1145 VM_ThreadDump op(dump_result, | |
1146 thread_handle_array, | |
1147 num_threads, | |
1148 max_depth, /* stack depth */ | |
1149 with_locked_monitors, | |
1150 with_locked_synchronizers); | |
1151 VMThread::execute(&op); | |
1152 } | |
1153 | |
1154 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1155 // for the thread ID specified in the corresponding entry in | |
1156 // the given array of thread IDs; or NULL if the thread does not exist | |
1157 // or has terminated. | |
1158 // | |
1159 // Input parameters: | |
1160 // ids - array of thread IDs | |
1161 // maxDepth - the maximum depth of stack traces to be dumped: | |
1162 // maxDepth == -1 requests to dump entire stack trace. | |
1163 // maxDepth == 0 requests no stack trace. | |
1164 // infoArray - array of ThreadInfo objects | |
1165 // | |
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1166 // QQQ - Why does this method return a value instead of void? |
0 | 1167 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1168 // Check if threads is null | |
1169 if (ids == NULL || infoArray == NULL) { | |
1170 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1171 } | |
1172 | |
1173 if (maxDepth < -1) { | |
1174 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1175 "Invalid maxDepth", -1); | |
1176 } | |
1177 | |
1178 ResourceMark rm(THREAD); | |
1179 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1180 typeArrayHandle ids_ah(THREAD, ta); | |
1181 | |
1182 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1183 objArrayOop oa = objArrayOop(infoArray_obj); | |
1184 objArrayHandle infoArray_h(THREAD, oa); | |
1185 | |
1186 // validate the thread id array | |
1187 validate_thread_id_array(ids_ah, CHECK_0); | |
1188 | |
1189 // validate the ThreadInfo[] parameters | |
1190 validate_thread_info_array(infoArray_h, CHECK_0); | |
1191 | |
1192 // infoArray must be of the same length as the given array of thread IDs | |
1193 int num_threads = ids_ah->length(); | |
1194 if (num_threads != infoArray_h->length()) { | |
1195 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1196 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1197 } | |
1198 | |
1199 if (JDK_Version::is_gte_jdk16x_version()) { | |
1200 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1201 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1202 } | |
1203 | |
1204 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1205 // GC may occur after the thread snapshots are taken but before | |
1206 // this function returns. The threadObj and other oops kept | |
1207 // in the ThreadSnapshot are marked and adjusted during GC. | |
1208 ThreadDumpResult dump_result(num_threads); | |
1209 | |
1210 if (maxDepth == 0) { | |
1211 // no stack trace dumped - do not need to stop the world | |
1212 { | |
1213 MutexLockerEx ml(Threads_lock); | |
1214 for (int i = 0; i < num_threads; i++) { | |
1215 jlong tid = ids_ah->long_at(i); | |
1216 JavaThread* jt = find_java_thread_from_id(tid); | |
1217 ThreadSnapshot* ts; | |
1218 if (jt == NULL) { | |
1219 // if the thread does not exist or now it is terminated, | |
1220 // create dummy snapshot | |
1221 ts = new ThreadSnapshot(); | |
1222 } else { | |
1223 ts = new ThreadSnapshot(jt); | |
1224 } | |
1225 dump_result.add_thread_snapshot(ts); | |
1226 } | |
1227 } | |
1228 } else { | |
1229 // obtain thread dump with the specific list of threads with stack trace | |
1230 do_thread_dump(&dump_result, | |
1231 ids_ah, | |
1232 num_threads, | |
1233 maxDepth, | |
1234 false, /* no locked monitor */ | |
1235 false, /* no locked synchronizers */ | |
1236 CHECK_0); | |
1237 } | |
1238 | |
1239 int num_snapshots = dump_result.num_snapshots(); | |
1240 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1241 int index = 0; | |
1242 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1243 // For each thread, create an java/lang/management/ThreadInfo object | |
1244 // and fill with the thread information | |
1245 | |
1246 if (ts->threadObj() == NULL) { | |
1247 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1248 infoArray_h->obj_at_put(index, NULL); | |
1249 continue; | |
1250 } | |
1251 | |
1252 // Create java.lang.management.ThreadInfo object | |
1253 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1254 infoArray_h->obj_at_put(index, info_obj); | |
1255 } | |
1256 return 0; | |
1257 JVM_END | |
1258 | |
1259 // Dump thread info for the specified threads. | |
1260 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1261 // for the thread ID specified in the corresponding entry in | |
1262 // the given array of thread IDs; or NULL if the thread does not exist | |
1263 // or has terminated. | |
1264 // | |
1265 // Input parameter: | |
1266 // ids - array of thread IDs; NULL indicates all live threads | |
1267 // locked_monitors - if true, dump locked object monitors | |
1268 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1269 // | |
1270 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1271 ResourceMark rm(THREAD); | |
1272 | |
1273 if (JDK_Version::is_gte_jdk16x_version()) { | |
1274 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1275 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1276 } | |
1277 | |
1278 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1279 int num_threads = (ta != NULL ? ta->length() : 0); | |
1280 typeArrayHandle ids_ah(THREAD, ta); | |
1281 | |
1282 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1283 | |
1284 if (ids_ah() != NULL) { | |
1285 | |
1286 // validate the thread id array | |
1287 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1288 | |
1289 // obtain thread dump of a specific list of threads | |
1290 do_thread_dump(&dump_result, | |
1291 ids_ah, | |
1292 num_threads, | |
1293 -1, /* entire stack */ | |
1294 (locked_monitors ? true : false), /* with locked monitors */ | |
1295 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1296 CHECK_NULL); | |
1297 } else { | |
1298 // obtain thread dump of all threads | |
1299 VM_ThreadDump op(&dump_result, | |
1300 -1, /* entire stack */ | |
1301 (locked_monitors ? true : false), /* with locked monitors */ | |
1302 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1303 VMThread::execute(&op); | |
1304 } | |
1305 | |
1306 int num_snapshots = dump_result.num_snapshots(); | |
1307 | |
1308 // create the result ThreadInfo[] object | |
1309 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
1310 instanceKlassHandle ik (THREAD, k); | |
1311 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1312 objArrayHandle result_h(THREAD, r); | |
1313 | |
1314 int index = 0; | |
1315 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1316 if (ts->threadObj() == NULL) { | |
1317 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1318 result_h->obj_at_put(index, NULL); | |
1319 continue; | |
1320 } | |
1321 | |
1322 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1323 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1324 | |
1325 // Create Object[] filled with locked monitors | |
1326 // Create int[] filled with the stack depth where a monitor was locked | |
1327 int num_frames = stacktrace->get_stack_depth(); | |
1328 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1329 | |
1330 // Count the total number of locked monitors | |
1331 for (int i = 0; i < num_frames; i++) { | |
1332 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1333 num_locked_monitors += frame->num_locked_monitors(); | |
1334 } | |
1335 | |
1336 objArrayHandle monitors_array; | |
1337 typeArrayHandle depths_array; | |
1338 objArrayHandle synchronizers_array; | |
1339 | |
1340 if (locked_monitors) { | |
1341 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1342 // where the thread locked it | |
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1343 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
0 | 1344 objArrayHandle mh(THREAD, array); |
1345 monitors_array = mh; | |
1346 | |
1347 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1348 typeArrayHandle dh(THREAD, tarray); | |
1349 depths_array = dh; | |
1350 | |
1351 int count = 0; | |
1352 int j = 0; | |
1353 for (int depth = 0; depth < num_frames; depth++) { | |
1354 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1355 int len = frame->num_locked_monitors(); | |
1356 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1357 for (j = 0; j < len; j++) { | |
1358 oop monitor = locked_monitors->at(j); | |
1359 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1360 monitors_array->obj_at_put(count, monitor); | |
1361 depths_array->int_at_put(count, depth); | |
1362 count++; | |
1363 } | |
1364 } | |
1365 | |
1366 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1367 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1368 oop object = jni_locked_monitors->at(j); | |
1369 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1370 monitors_array->obj_at_put(count, object); | |
1371 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1372 depths_array->int_at_put(count, -1); | |
1373 count++; | |
1374 } | |
1375 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1376 } | |
1377 | |
1378 if (locked_synchronizers) { | |
1379 // Create Object[] filled with locked JSR-166 synchronizers | |
1380 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1381 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1382 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1383 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1384 | |
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1385 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
0 | 1386 objArrayHandle sh(THREAD, array); |
1387 synchronizers_array = sh; | |
1388 | |
1389 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1390 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1391 } | |
1392 } | |
1393 | |
1394 // Create java.lang.management.ThreadInfo object | |
1395 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1396 monitors_array, | |
1397 depths_array, | |
1398 synchronizers_array, | |
1399 CHECK_NULL); | |
1400 result_h->obj_at_put(index, info_obj); | |
1401 } | |
1402 | |
1403 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1404 JVM_END | |
1405 | |
1406 // Returns an array of Class objects. | |
1407 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1408 ResourceMark rm(THREAD); | |
1409 | |
1410 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1411 | |
1412 int num_classes = lce.num_loaded_classes(); | |
1142 | 1413 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1414 objArrayHandle classes_ah(THREAD, r); |
1415 | |
1416 for (int i = 0; i < num_classes; i++) { | |
1417 KlassHandle kh = lce.get_klass(i); | |
1418 oop mirror = Klass::cast(kh())->java_mirror(); | |
1419 classes_ah->obj_at_put(i, mirror); | |
1420 } | |
1421 | |
1422 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1423 JVM_END | |
1424 | |
1425 // Reset statistic. Return true if the requested statistic is reset. | |
1426 // Otherwise, return false. | |
1427 // | |
1428 // Input parameters: | |
1429 // obj - specify which instance the statistic associated with to be reset | |
1430 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1431 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1432 // type - the type of statistic to be reset | |
1433 // | |
1434 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1435 ResourceMark rm(THREAD); | |
1436 | |
1437 switch (type) { | |
1438 case JMM_STAT_PEAK_THREAD_COUNT: | |
1439 ThreadService::reset_peak_thread_count(); | |
1440 return true; | |
1441 | |
1442 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1443 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1444 jlong tid = obj.j; | |
1445 if (tid < 0) { | |
1446 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1447 } | |
1448 | |
1449 // Look for the JavaThread of this given tid | |
1450 MutexLockerEx ml(Threads_lock); | |
1451 if (tid == 0) { | |
1452 // reset contention statistics for all threads if tid == 0 | |
1453 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1454 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1455 ThreadService::reset_contention_count_stat(java_thread); | |
1456 } else { | |
1457 ThreadService::reset_contention_time_stat(java_thread); | |
1458 } | |
1459 } | |
1460 } else { | |
1461 // reset contention statistics for a given thread | |
1462 JavaThread* java_thread = find_java_thread_from_id(tid); | |
1463 if (java_thread == NULL) { | |
1464 return false; | |
1465 } | |
1466 | |
1467 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1468 ThreadService::reset_contention_count_stat(java_thread); | |
1469 } else { | |
1470 ThreadService::reset_contention_time_stat(java_thread); | |
1471 } | |
1472 } | |
1473 return true; | |
1474 break; | |
1475 } | |
1476 case JMM_STAT_PEAK_POOL_USAGE: { | |
1477 jobject o = obj.l; | |
1478 if (o == NULL) { | |
1479 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1480 } | |
1481 | |
1482 oop pool_obj = JNIHandles::resolve(o); | |
1483 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1484 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1485 | |
1486 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1487 if (pool != NULL) { | |
1488 pool->reset_peak_memory_usage(); | |
1489 return true; | |
1490 } | |
1491 break; | |
1492 } | |
1493 case JMM_STAT_GC_STAT: { | |
1494 jobject o = obj.l; | |
1495 if (o == NULL) { | |
1496 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1497 } | |
1498 | |
1499 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1500 if (mgr != NULL) { | |
1501 mgr->reset_gc_stat(); | |
1502 return true; | |
1503 } | |
1504 break; | |
1505 } | |
1506 default: | |
1507 assert(0, "Unknown Statistic Type"); | |
1508 } | |
1509 return false; | |
1510 JVM_END | |
1511 | |
1512 // Returns the fast estimate of CPU time consumed by | |
1513 // a given thread (in nanoseconds). | |
1514 // If thread_id == 0, return CPU time for the current thread. | |
1515 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1516 if (!os::is_thread_cpu_time_supported()) { | |
1517 return -1; | |
1518 } | |
1519 | |
1520 if (thread_id < 0) { | |
1521 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1522 "Invalid thread ID", -1); | |
1523 } | |
1524 | |
1525 JavaThread* java_thread = NULL; | |
1526 if (thread_id == 0) { | |
1527 // current thread | |
1528 return os::current_thread_cpu_time(); | |
1529 } else { | |
1530 MutexLockerEx ml(Threads_lock); | |
1531 java_thread = find_java_thread_from_id(thread_id); | |
1532 if (java_thread != NULL) { | |
1533 return os::thread_cpu_time((Thread*) java_thread); | |
1534 } | |
1535 } | |
1536 return -1; | |
1537 JVM_END | |
1538 | |
1539 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
1540 // If thread_id == 0, CPU time for the current thread is returned. | |
1541 // If user_sys_cpu_time = true, user level and system CPU time of | |
1542 // a given thread is returned; otherwise, only user level CPU time | |
1543 // is returned. | |
1544 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
1545 if (!os::is_thread_cpu_time_supported()) { | |
1546 return -1; | |
1547 } | |
1548 | |
1549 if (thread_id < 0) { | |
1550 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1551 "Invalid thread ID", -1); | |
1552 } | |
1553 | |
1554 JavaThread* java_thread = NULL; | |
1555 if (thread_id == 0) { | |
1556 // current thread | |
1557 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
1558 } else { | |
1559 MutexLockerEx ml(Threads_lock); | |
1560 java_thread = find_java_thread_from_id(thread_id); | |
1561 if (java_thread != NULL) { | |
1562 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
1563 } | |
1564 } | |
1565 return -1; | |
1566 JVM_END | |
1567 | |
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1568 // Gets an array containing the CPU times consumed by a set of threads |
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1569 // (in nanoseconds). Each element of the array is the CPU time for the |
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1570 // thread ID specified in the corresponding entry in the given array |
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1571 // of thread IDs; or -1 if the thread does not exist or has terminated. |
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1572 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
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1573 // for the given thread is returned; otherwise, only user level CPU time |
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1574 // is returned. |
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1575 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
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1576 jlongArray timeArray, |
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1577 jboolean user_sys_cpu_time)) |
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1578 // Check if threads is null |
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1579 if (ids == NULL || timeArray == NULL) { |
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1580 THROW(vmSymbols::java_lang_NullPointerException()); |
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1581 } |
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1582 |
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1583 ResourceMark rm(THREAD); |
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1584 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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1585 typeArrayHandle ids_ah(THREAD, ta); |
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1586 |
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1587 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
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1588 typeArrayHandle timeArray_h(THREAD, tia); |
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1589 |
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1590 // validate the thread id array |
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1591 validate_thread_id_array(ids_ah, CHECK); |
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1592 |
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1593 // timeArray must be of the same length as the given array of thread IDs |
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1594 int num_threads = ids_ah->length(); |
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1595 if (num_threads != timeArray_h->length()) { |
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1596 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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1597 "The length of the given long array does not match the length of " |
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1598 "the given array of thread IDs"); |
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1599 } |
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1600 |
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1601 MutexLockerEx ml(Threads_lock); |
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1602 for (int i = 0; i < num_threads; i++) { |
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1603 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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1604 if (java_thread != NULL) { |
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1605 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
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1606 user_sys_cpu_time != 0)); |
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1607 } |
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1608 } |
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1609 JVM_END |
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1610 |
0 | 1611 // Returns a String array of all VM global flag names |
1612 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1613 // last flag entry is always NULL, so subtract 1 | |
1614 int nFlags = (int) Flag::numFlags - 1; | |
1615 // allocate a temp array | |
1142 | 1616 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1617 nFlags, CHECK_0); |
1618 objArrayHandle flags_ah(THREAD, r); | |
1619 int num_entries = 0; | |
1620 for (int i = 0; i < nFlags; i++) { | |
1621 Flag* flag = &Flag::flags[i]; | |
350 | 1622 // Exclude the locked (experimental, diagnostic) flags |
0 | 1623 if (flag->is_unlocked() || flag->is_unlocker()) { |
1624 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
1625 flags_ah->obj_at_put(num_entries, s()); | |
1626 num_entries++; | |
1627 } | |
1628 } | |
1629 | |
1630 if (num_entries < nFlags) { | |
1631 // Return array of right length | |
1142 | 1632 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1633 for(int i = 0; i < num_entries; i++) { |
1634 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1635 } | |
1636 return (jobjectArray)JNIHandles::make_local(env, res); | |
1637 } | |
1638 | |
1639 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1640 JVM_END | |
1641 | |
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1642 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1643 // can't be determined, true otherwise. If false is returned, then *global |
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1644 // will be incomplete and invalid. |
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1645 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1646 Handle flag_name; |
1647 if (name() == NULL) { | |
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1648 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
0 | 1649 } else { |
1650 flag_name = name; | |
1651 } | |
1652 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1653 | |
1654 if (flag->is_bool()) { | |
1655 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1656 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1657 } else if (flag->is_intx()) { | |
1658 global->value.j = (jlong)flag->get_intx(); | |
1659 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1660 } else if (flag->is_uintx()) { | |
1661 global->value.j = (jlong)flag->get_uintx(); | |
1662 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1663 } else if (flag->is_uint64_t()) { |
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1664 global->value.j = (jlong)flag->get_uint64_t(); |
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1665 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1666 } else if (flag->is_ccstr()) { |
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1667 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1668 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1669 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1670 } else { |
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1671 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1672 return false; |
0 | 1673 } |
1674 | |
1675 global->writeable = flag->is_writeable(); | |
1676 global->external = flag->is_external(); | |
1677 switch (flag->origin) { | |
1678 case DEFAULT: | |
1679 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
1680 break; | |
1681 case COMMAND_LINE: | |
1682 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
1683 break; | |
1684 case ENVIRON_VAR: | |
1685 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
1686 break; | |
1687 case CONFIG_FILE: | |
1688 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
1689 break; | |
1690 case MANAGEMENT: | |
1691 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
1692 break; | |
1693 case ERGONOMIC: | |
1694 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
1695 break; | |
1696 default: | |
1697 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1698 } | |
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1699 |
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1700 return true; |
0 | 1701 } |
1702 | |
1703 // Fill globals array of count length with jmmVMGlobal entries | |
1704 // specified by names. If names == NULL, fill globals array | |
1705 // with all Flags. Return value is number of entries | |
1706 // created in globals. | |
1707 // If a Flag with a given name in an array element does not | |
1708 // exist, globals[i].name will be set to NULL. | |
1709 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1710 jobjectArray names, | |
1711 jmmVMGlobal *globals, | |
1712 jint count)) | |
1713 | |
1714 | |
1715 if (globals == NULL) { | |
1716 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1717 } | |
1718 | |
1719 ResourceMark rm(THREAD); | |
1720 | |
1721 if (names != NULL) { | |
1722 // return the requested globals | |
1723 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1724 objArrayHandle names_ah(THREAD, ta); | |
1725 // Make sure we have a String array | |
1726 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1727 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1728 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1729 "Array element type is not String class", 0); | |
1730 } | |
1731 | |
1732 int names_length = names_ah->length(); | |
1733 int num_entries = 0; | |
1734 for (int i = 0; i < names_length && i < count; i++) { | |
1735 oop s = names_ah->obj_at(i); | |
1736 if (s == NULL) { | |
1737 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1738 } | |
1739 | |
1740 Handle sh(THREAD, s); | |
1741 char* str = java_lang_String::as_utf8_string(s); | |
1742 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1743 if (flag != NULL && |
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1744 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1745 num_entries++; |
1746 } else { | |
1747 globals[i].name = NULL; | |
1748 } | |
1749 } | |
1750 return num_entries; | |
1751 } else { | |
1752 // return all globals if names == NULL | |
1753 | |
1754 // last flag entry is always NULL, so subtract 1 | |
1755 int nFlags = (int) Flag::numFlags - 1; | |
1756 Handle null_h; | |
1757 int num_entries = 0; | |
1758 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1759 Flag* flag = &Flag::flags[i]; | |
350 | 1760 // Exclude the locked (diagnostic, experimental) flags |
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1761 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1762 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1763 num_entries++; |
1764 } | |
1765 } | |
1766 return num_entries; | |
1767 } | |
1768 JVM_END | |
1769 | |
1770 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1771 ResourceMark rm(THREAD); | |
1772 | |
1773 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1774 if (fn == NULL) { | |
1775 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1776 "The flag name cannot be null."); | |
1777 } | |
1778 char* name = java_lang_String::as_utf8_string(fn); | |
1779 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1780 if (flag == NULL) { | |
1781 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1782 "Flag does not exist."); | |
1783 } | |
1784 if (!flag->is_writeable()) { | |
1785 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1786 "This flag is not writeable."); | |
1787 } | |
1788 | |
1789 bool succeed; | |
1790 if (flag->is_bool()) { | |
1791 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
1792 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
1793 } else if (flag->is_intx()) { | |
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1794 intx ivalue = (intx)new_value.j; |
0 | 1795 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
1796 } else if (flag->is_uintx()) { | |
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1797 uintx uvalue = (uintx)new_value.j; |
0 | 1798 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1799 } else if (flag->is_uint64_t()) { |
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1800 uint64_t uvalue = (uint64_t)new_value.j; |
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1801 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
0 | 1802 } else if (flag->is_ccstr()) { |
1803 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1804 if (str == NULL) { | |
1805 THROW(vmSymbols::java_lang_NullPointerException()); | |
1806 } | |
1807 ccstr svalue = java_lang_String::as_utf8_string(str); | |
1808 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
1809 } | |
1810 assert(succeed, "Setting flag should succeed"); | |
1811 JVM_END | |
1812 | |
1813 class ThreadTimesClosure: public ThreadClosure { | |
1814 private: | |
1815 objArrayOop _names; | |
1816 typeArrayOop _times; | |
1817 int _names_len; | |
1818 int _times_len; | |
1819 int _count; | |
1820 | |
1821 public: | |
1822 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
1823 virtual void do_thread(Thread* thread); | |
1824 int count() { return _count; } | |
1825 }; | |
1826 | |
1827 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
1828 typeArrayOop times) { | |
1829 assert(names != NULL, "names was NULL"); | |
1830 assert(times != NULL, "times was NULL"); | |
1831 _names = names; | |
1832 _names_len = names->length(); | |
1833 _times = times; | |
1834 _times_len = times->length(); | |
1835 _count = 0; | |
1836 } | |
1837 | |
1838 void ThreadTimesClosure::do_thread(Thread* thread) { | |
1839 Handle s; | |
1840 assert(thread != NULL, "thread was NULL"); | |
1841 | |
1842 // exclude externally visible JavaThreads | |
1843 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1844 return; | |
1845 } | |
1846 | |
1847 if (_count >= _names_len || _count >= _times_len) { | |
1848 // skip if the result array is not big enough | |
1849 return; | |
1850 } | |
1851 | |
1852 EXCEPTION_MARK; | |
1853 | |
1854 assert(thread->name() != NULL, "All threads should have a name"); | |
1855 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
1856 _names->obj_at_put(_count, s()); | |
1857 | |
1858 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
1859 os::thread_cpu_time(thread) : -1); | |
1860 _count++; | |
1861 } | |
1862 | |
1863 // Fills names with VM internal thread names and times with the corresponding | |
1864 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1865 // If the element type of names is not String, an IllegalArgumentException is | |
1866 // thrown. | |
1867 // If an array is not large enough to hold all the entries, only the entries | |
1868 // that fit will be returned. Return value is the number of VM internal | |
1869 // threads entries. | |
1870 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1871 jobjectArray names, | |
1872 jlongArray times)) | |
1873 if (names == NULL || times == NULL) { | |
1874 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1875 } | |
1876 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1877 objArrayHandle names_ah(THREAD, na); | |
1878 | |
1879 // Make sure we have a String array | |
1880 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1881 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1882 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1883 "Array element type is not String class", 0); | |
1884 } | |
1885 | |
1886 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1887 typeArrayHandle times_ah(THREAD, ta); | |
1888 | |
1889 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
1890 { | |
1891 MutexLockerEx ml(Threads_lock); | |
1892 Threads::threads_do(&ttc); | |
1893 } | |
1894 | |
1895 return ttc.count(); | |
1896 JVM_END | |
1897 | |
1898 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1899 ResourceMark rm(THREAD); | |
1900 | |
1901 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1902 VMThread::execute(&op); | |
1903 | |
1904 DeadlockCycle* deadlocks = op.result(); | |
1905 if (deadlocks == NULL) { | |
1906 // no deadlock found and return | |
1907 return Handle(); | |
1908 } | |
1909 | |
1910 int num_threads = 0; | |
1911 DeadlockCycle* cycle; | |
1912 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1913 num_threads += cycle->num_threads(); | |
1914 } | |
1915 | |
1142 | 1916 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1917 objArrayHandle threads_ah(THREAD, r); |
1918 | |
1919 int index = 0; | |
1920 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1921 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1922 int len = deadlock_threads->length(); | |
1923 for (int i = 0; i < len; i++) { | |
1924 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1925 index++; | |
1926 } | |
1927 } | |
1928 return threads_ah; | |
1929 } | |
1930 | |
1931 // Finds cycles of threads that are deadlocked involved in object monitors | |
1932 // and JSR-166 synchronizers. | |
1933 // Returns an array of Thread objects which are in deadlock, if any. | |
1934 // Otherwise, returns NULL. | |
1935 // | |
1936 // Input parameter: | |
1937 // object_monitors_only - if true, only check object monitors | |
1938 // | |
1939 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1940 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1941 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1942 JVM_END | |
1943 | |
1944 // Finds cycles of threads that are deadlocked on monitor locks | |
1945 // Returns an array of Thread objects which are in deadlock, if any. | |
1946 // Otherwise, returns NULL. | |
1947 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1948 Handle result = find_deadlocks(true, CHECK_0); | |
1949 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1950 JVM_END | |
1951 | |
1952 // Gets the information about GC extension attributes including | |
1953 // the name of the attribute, its type, and a short description. | |
1954 // | |
1955 // Input parameters: | |
1956 // mgr - GC memory manager | |
1957 // info - caller allocated array of jmmExtAttributeInfo | |
1958 // count - number of elements of the info array | |
1959 // | |
1960 // Returns the number of GC extension attributes filled in the info array; or | |
1961 // -1 if info is not big enough | |
1962 // | |
1963 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1964 // All GC memory managers have 1 attribute (number of GC threads) | |
1965 if (count == 0) { | |
1966 return 0; | |
1967 } | |
1968 | |
1969 if (info == NULL) { | |
1970 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1971 } | |
1972 | |
1973 info[0].name = "GcThreadCount"; | |
1974 info[0].type = 'I'; | |
1975 info[0].description = "Number of GC threads"; | |
1976 return 1; | |
1977 JVM_END | |
1978 | |
1979 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1980 // of a given length and return the objArrayOop | |
1981 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1982 if (array == NULL) { | |
1983 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1984 } | |
1985 | |
1986 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1987 objArrayHandle array_h(THREAD, oa); | |
1988 | |
1989 // array must be of the given length | |
1990 if (length != array_h->length()) { | |
1991 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1992 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
1993 } | |
1994 | |
1995 // check if the element of array is of type MemoryUsage class | |
1996 klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); | |
1997 klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); | |
1998 if (element_klass != usage_klass) { | |
1999 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
2000 "The element type is not MemoryUsage class", 0); | |
2001 } | |
2002 | |
2003 return array_h(); | |
2004 } | |
2005 | |
2006 // Gets the statistics of the last GC of a given GC memory manager. | |
2007 // Input parameters: | |
2008 // obj - GarbageCollectorMXBean object | |
2009 // gc_stat - caller allocated jmmGCStat where: | |
2010 // a. before_gc_usage - array of MemoryUsage objects | |
2011 // b. after_gc_usage - array of MemoryUsage objects | |
2012 // c. gc_ext_attributes_values_size is set to the | |
2013 // gc_ext_attribute_values array allocated | |
2014 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
2015 // | |
2016 // On return, | |
2017 // gc_index == 0 indicates no GC statistics available | |
2018 // | |
2019 // before_gc_usage and after_gc_usage - filled with per memory pool | |
2020 // before and after GC usage in the same order as the memory pools | |
2021 // returned by GetMemoryPools for a given GC memory manager. | |
2022 // num_gc_ext_attributes indicates the number of elements in | |
2023 // the gc_ext_attribute_values array is filled; or | |
2024 // -1 if the gc_ext_attributes_values array is not big enough | |
2025 // | |
2026 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
2027 ResourceMark rm(THREAD); | |
2028 | |
2029 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
2030 THROW(vmSymbols::java_lang_NullPointerException()); | |
2031 } | |
2032 | |
2033 // Get the GCMemoryManager | |
2034 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
2035 | |
2036 // Make a copy of the last GC statistics | |
2037 // GC may occur while constructing the last GC information | |
2038 int num_pools = MemoryService::num_memory_pools(); | |
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2039 GCStatInfo stat(num_pools); |
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2040 if (mgr->get_last_gc_stat(&stat) == 0) { |
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2041 gc_stat->gc_index = 0; |
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2042 return; |
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2043 } |
0 | 2044 |
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2045 gc_stat->gc_index = stat.gc_index(); |
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2046 gc_stat->start_time = Management::ticks_to_ms(stat.start_time()); |
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2047 gc_stat->end_time = Management::ticks_to_ms(stat.end_time()); |
0 | 2048 |
2049 // Current implementation does not have GC extension attributes | |
2050 gc_stat->num_gc_ext_attributes = 0; | |
2051 | |
2052 // Fill the arrays of MemoryUsage objects with before and after GC | |
2053 // per pool memory usage | |
2054 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2055 num_pools, | |
2056 CHECK); | |
2057 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2058 | |
2059 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2060 num_pools, | |
2061 CHECK); | |
2062 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2063 | |
2064 for (int i = 0; i < num_pools; i++) { | |
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2065 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK); |
0 | 2066 Handle after_usage; |
2067 | |
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2068 MemoryUsage u = stat.after_gc_usage_for_pool(i); |
0 | 2069 if (u.max_size() == 0 && u.used() > 0) { |
2070 // If max size == 0, this pool is a survivor space. | |
2071 // Set max size = -1 since the pools will be swapped after GC. | |
2072 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2073 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2074 } else { | |
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2075 after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK); |
0 | 2076 } |
2077 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2078 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2079 } | |
2080 | |
2081 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2082 // Current implementation only has 1 attribute (number of GC threads) | |
2083 // The type is 'I' | |
2084 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2085 } | |
2086 JVM_END | |
2087 | |
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2088 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) |
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2089 ResourceMark rm(THREAD); |
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2090 // Get the GCMemoryManager |
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2091 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
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2092 mgr->set_notification_enabled(enabled?true:false); |
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2093 JVM_END |
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2094 |
0 | 2095 // Dump heap - Returns 0 if succeeds. |
2096 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
2097 #ifndef SERVICES_KERNEL | |
2098 ResourceMark rm(THREAD); | |
2099 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2100 if (on == NULL) { | |
2101 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2102 "Output file name cannot be null.", -1); | |
2103 } | |
2104 char* name = java_lang_String::as_utf8_string(on); | |
2105 if (name == NULL) { | |
2106 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2107 "Output file name cannot be null.", -1); | |
2108 } | |
2109 HeapDumper dumper(live ? true : false); | |
2110 if (dumper.dump(name) != 0) { | |
2111 const char* errmsg = dumper.error_as_C_string(); | |
2112 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2113 } | |
2114 return 0; | |
2115 #else // SERVICES_KERNEL | |
2116 return -1; | |
2117 #endif // SERVICES_KERNEL | |
2118 JVM_END | |
2119 | |
4133 | 2120 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env)) |
2121 ResourceMark rm(THREAD); | |
2122 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(); | |
2123 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(), | |
2124 dcmd_list->length(), CHECK_NULL); | |
2125 objArrayHandle cmd_array(THREAD, cmd_array_oop); | |
2126 for (int i = 0; i < dcmd_list->length(); i++) { | |
2127 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL); | |
2128 cmd_array->obj_at_put(i, cmd_name); | |
2129 } | |
2130 return (jobjectArray) JNIHandles::make_local(env, cmd_array()); | |
2131 JVM_END | |
2132 | |
2133 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds, | |
2134 dcmdInfo* infoArray)) | |
2135 if (cmds == NULL || infoArray == NULL) { | |
2136 THROW(vmSymbols::java_lang_NullPointerException()); | |
2137 } | |
2138 | |
2139 ResourceMark rm(THREAD); | |
2140 | |
2141 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds)); | |
2142 objArrayHandle cmds_ah(THREAD, ca); | |
2143 | |
2144 // Make sure we have a String array | |
2145 klassOop element_klass = objArrayKlass::cast(cmds_ah->klass())->element_klass(); | |
2146 if (element_klass != SystemDictionary::String_klass()) { | |
2147 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2148 "Array element type is not String class"); | |
2149 } | |
2150 | |
2151 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(); | |
2152 | |
2153 int num_cmds = cmds_ah->length(); | |
2154 for (int i = 0; i < num_cmds; i++) { | |
2155 oop cmd = cmds_ah->obj_at(i); | |
2156 if (cmd == NULL) { | |
2157 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2158 "Command name cannot be null."); | |
2159 } | |
2160 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2161 if (cmd_name == NULL) { | |
2162 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2163 "Command name cannot be null."); | |
2164 } | |
2165 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name); | |
2166 if (pos == -1) { | |
2167 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2168 "Unknown diagnostic command"); | |
2169 } | |
2170 DCmdInfo* info = info_list->at(pos); | |
2171 infoArray[i].name = info->name(); | |
2172 infoArray[i].description = info->description(); | |
2173 infoArray[i].impact = info->impact(); | |
2174 infoArray[i].num_arguments = info->num_arguments(); | |
2175 infoArray[i].enabled = info->is_enabled(); | |
2176 } | |
2177 JVM_END | |
2178 | |
2179 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env, | |
2180 jstring command, dcmdArgInfo* infoArray)) | |
2181 ResourceMark rm(THREAD); | |
2182 oop cmd = JNIHandles::resolve_external_guard(command); | |
2183 if (cmd == NULL) { | |
2184 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2185 "Command line cannot be null."); | |
2186 } | |
2187 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2188 if (cmd_name == NULL) { | |
2189 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2190 "Command line content cannot be null."); | |
2191 } | |
2192 DCmd* dcmd = NULL; | |
2193 DCmdFactory*factory = DCmdFactory::factory(cmd_name, strlen(cmd_name)); | |
2194 if (factory != NULL) { | |
2195 dcmd = factory->create_resource_instance(NULL); | |
2196 } | |
2197 if (dcmd == NULL) { | |
2198 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2199 "Unknown diagnostic command"); | |
2200 } | |
2201 DCmdMark mark(dcmd); | |
2202 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array(); | |
2203 if (array->length() == 0) { | |
2204 return; | |
2205 } | |
2206 for (int i = 0; i < array->length(); i++) { | |
2207 infoArray[i].name = array->at(i)->name(); | |
2208 infoArray[i].description = array->at(i)->description(); | |
2209 infoArray[i].type = array->at(i)->type(); | |
2210 infoArray[i].default_string = array->at(i)->default_string(); | |
2211 infoArray[i].mandatory = array->at(i)->is_mandatory(); | |
2212 infoArray[i].option = array->at(i)->is_option(); | |
2213 infoArray[i].position = array->at(i)->position(); | |
2214 } | |
2215 return; | |
2216 JVM_END | |
2217 | |
2218 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline)) | |
2219 ResourceMark rm(THREAD); | |
2220 oop cmd = JNIHandles::resolve_external_guard(commandline); | |
2221 if (cmd == NULL) { | |
2222 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2223 "Command line cannot be null."); | |
2224 } | |
2225 char* cmdline = java_lang_String::as_utf8_string(cmd); | |
2226 if (cmdline == NULL) { | |
2227 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2228 "Command line content cannot be null."); | |
2229 } | |
2230 bufferedStream output; | |
2231 DCmd::parse_and_execute(&output, cmdline, ' ', CHECK_NULL); | |
2232 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL); | |
2233 return (jstring) JNIHandles::make_local(env, result); | |
2234 JVM_END | |
2235 | |
0 | 2236 jlong Management::ticks_to_ms(jlong ticks) { |
2237 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2238 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2239 * (double)1000.0); | |
2240 } | |
2241 | |
2242 const struct jmmInterface_1_ jmm_interface = { | |
2243 NULL, | |
2244 NULL, | |
2245 jmm_GetVersion, | |
2246 jmm_GetOptionalSupport, | |
2247 jmm_GetInputArguments, | |
2248 jmm_GetThreadInfo, | |
2249 jmm_GetInputArgumentArray, | |
2250 jmm_GetMemoryPools, | |
2251 jmm_GetMemoryManagers, | |
2252 jmm_GetMemoryPoolUsage, | |
2253 jmm_GetPeakMemoryPoolUsage, | |
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2254 jmm_GetThreadAllocatedMemory, |
0 | 2255 jmm_GetMemoryUsage, |
2256 jmm_GetLongAttribute, | |
2257 jmm_GetBoolAttribute, | |
2258 jmm_SetBoolAttribute, | |
2259 jmm_GetLongAttributes, | |
2260 jmm_FindMonitorDeadlockedThreads, | |
2261 jmm_GetThreadCpuTime, | |
2262 jmm_GetVMGlobalNames, | |
2263 jmm_GetVMGlobals, | |
2264 jmm_GetInternalThreadTimes, | |
2265 jmm_ResetStatistic, | |
2266 jmm_SetPoolSensor, | |
2267 jmm_SetPoolThreshold, | |
2268 jmm_GetPoolCollectionUsage, | |
2269 jmm_GetGCExtAttributeInfo, | |
2270 jmm_GetLastGCStat, | |
2271 jmm_GetThreadCpuTimeWithKind, | |
2100
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2272 jmm_GetThreadCpuTimesWithKind, |
0 | 2273 jmm_DumpHeap0, |
2274 jmm_FindDeadlockedThreads, | |
2275 jmm_SetVMGlobal, | |
2276 NULL, | |
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2277 jmm_DumpThreads, |
4133 | 2278 jmm_SetGCNotificationEnabled, |
2279 jmm_GetDiagnosticCommands, | |
2280 jmm_GetDiagnosticCommandInfo, | |
2281 jmm_GetDiagnosticCommandArgumentsInfo, | |
2282 jmm_ExecuteDiagnosticCommand | |
0 | 2283 }; |
2284 | |
2285 void* Management::get_jmm_interface(int version) { | |
2286 if (version == JMM_VERSION_1_0) { | |
2287 return (void*) &jmm_interface; | |
2288 } | |
2289 return NULL; | |
2290 } |