Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 4237:30b6720604d2
Undid expected failure for EscapeAnalysisTest.testMonitor2().
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Fri, 06 Jan 2012 15:35:52 +0100 |
parents | 3b688d6ff3d0 |
children | 6c995c08526c |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "compiler/compileBroker.hpp" | |
28 #include "memory/iterator.hpp" | |
29 #include "memory/oopFactory.hpp" | |
30 #include "memory/resourceArea.hpp" | |
31 #include "oops/klass.hpp" | |
32 #include "oops/klassOop.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/oop.inline.hpp" | |
35 #include "runtime/arguments.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
37 #include "runtime/interfaceSupport.hpp" | |
38 #include "runtime/javaCalls.hpp" | |
39 #include "runtime/jniHandles.hpp" | |
40 #include "runtime/os.hpp" | |
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41 #include "runtime/serviceThread.hpp" |
1972 | 42 #include "services/classLoadingService.hpp" |
4133 | 43 #include "services/diagnosticCommand.hpp" |
44 #include "services/diagnosticFramework.hpp" | |
1972 | 45 #include "services/heapDumper.hpp" |
4133 | 46 #include "services/jmm.h" |
1972 | 47 #include "services/lowMemoryDetector.hpp" |
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48 #include "services/gcNotifier.hpp" |
1972 | 49 #include "services/management.hpp" |
50 #include "services/memoryManager.hpp" | |
51 #include "services/memoryPool.hpp" | |
52 #include "services/memoryService.hpp" | |
53 #include "services/runtimeService.hpp" | |
54 #include "services/threadService.hpp" | |
0 | 55 |
56 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
57 PerfVariable* Management::_end_vm_creation_time = NULL; | |
58 PerfVariable* Management::_vm_init_done_time = NULL; | |
59 | |
60 klassOop Management::_sensor_klass = NULL; | |
61 klassOop Management::_threadInfo_klass = NULL; | |
62 klassOop Management::_memoryUsage_klass = NULL; | |
63 klassOop Management::_memoryPoolMXBean_klass = NULL; | |
64 klassOop Management::_memoryManagerMXBean_klass = NULL; | |
65 klassOop Management::_garbageCollectorMXBean_klass = NULL; | |
66 klassOop Management::_managementFactory_klass = NULL; | |
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67 klassOop Management::_garbageCollectorImpl_klass = NULL; |
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68 klassOop Management::_gcInfo_klass = NULL; |
0 | 69 |
70 jmmOptionalSupport Management::_optional_support = {0}; | |
71 TimeStamp Management::_stamp; | |
72 | |
73 void management_init() { | |
74 Management::init(); | |
75 ThreadService::init(); | |
76 RuntimeService::init(); | |
77 ClassLoadingService::init(); | |
78 } | |
79 | |
80 void Management::init() { | |
81 EXCEPTION_MARK; | |
82 | |
83 // These counters are for java.lang.management API support. | |
84 // They are created even if -XX:-UsePerfData is set and in | |
85 // that case, they will be allocated on C heap. | |
86 | |
87 _begin_vm_creation_time = | |
88 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
89 PerfData::U_None, CHECK); | |
90 | |
91 _end_vm_creation_time = | |
92 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
93 PerfData::U_None, CHECK); | |
94 | |
95 _vm_init_done_time = | |
96 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
97 PerfData::U_None, CHECK); | |
98 | |
99 // Initialize optional support | |
100 _optional_support.isLowMemoryDetectionSupported = 1; | |
101 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
102 _optional_support.isThreadContentionMonitoringSupported = 1; | |
103 | |
104 if (os::is_thread_cpu_time_supported()) { | |
105 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
106 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
107 } else { | |
108 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
109 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
110 } | |
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111 |
0 | 112 _optional_support.isBootClassPathSupported = 1; |
113 _optional_support.isObjectMonitorUsageSupported = 1; | |
114 #ifndef SERVICES_KERNEL | |
115 // This depends on the heap inspector | |
116 _optional_support.isSynchronizerUsageSupported = 1; | |
117 #endif // SERVICES_KERNEL | |
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118 _optional_support.isThreadAllocatedMemorySupported = 1; |
4133 | 119 |
120 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false)); | |
121 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false)); | |
0 | 122 } |
123 | |
124 void Management::initialize(TRAPS) { | |
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125 // Start the service thread |
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126 ServiceThread::initialize(); |
0 | 127 |
128 if (ManagementServer) { | |
129 ResourceMark rm(THREAD); | |
130 HandleMark hm(THREAD); | |
131 | |
132 // Load and initialize the sun.management.Agent class | |
133 // invoke startAgent method to start the management server | |
134 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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135 klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 136 loader, |
137 Handle(), | |
138 true, | |
139 CHECK); | |
140 instanceKlassHandle ik (THREAD, k); | |
141 | |
142 JavaValue result(T_VOID); | |
143 JavaCalls::call_static(&result, | |
144 ik, | |
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145 vmSymbols::startAgent_name(), |
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146 vmSymbols::void_method_signature(), |
0 | 147 CHECK); |
148 } | |
149 } | |
150 | |
151 void Management::get_optional_support(jmmOptionalSupport* support) { | |
152 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
153 } | |
154 | |
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155 klassOop Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
0 | 156 klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
157 instanceKlassHandle ik (THREAD, k); | |
158 if (ik->should_be_initialized()) { | |
159 ik->initialize(CHECK_NULL); | |
160 } | |
161 return ik(); | |
162 } | |
163 | |
164 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
165 // if the performance counter is not initialized, | |
166 // then vm initialization failed; simply return. | |
167 if (_begin_vm_creation_time == NULL) return; | |
168 | |
169 _begin_vm_creation_time->set_value(begin); | |
170 _end_vm_creation_time->set_value(begin + duration); | |
171 PerfMemory::set_accessible(true); | |
172 } | |
173 | |
174 jlong Management::timestamp() { | |
175 TimeStamp t; | |
176 t.update(); | |
177 return t.ticks() - _stamp.ticks(); | |
178 } | |
179 | |
180 void Management::oops_do(OopClosure* f) { | |
181 MemoryService::oops_do(f); | |
182 ThreadService::oops_do(f); | |
183 | |
184 f->do_oop((oop*) &_sensor_klass); | |
185 f->do_oop((oop*) &_threadInfo_klass); | |
186 f->do_oop((oop*) &_memoryUsage_klass); | |
187 f->do_oop((oop*) &_memoryPoolMXBean_klass); | |
188 f->do_oop((oop*) &_memoryManagerMXBean_klass); | |
189 f->do_oop((oop*) &_garbageCollectorMXBean_klass); | |
190 f->do_oop((oop*) &_managementFactory_klass); | |
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191 f->do_oop((oop*) &_garbageCollectorImpl_klass); |
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192 f->do_oop((oop*) &_gcInfo_klass); |
0 | 193 } |
194 | |
195 klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { | |
196 if (_threadInfo_klass == NULL) { | |
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197 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 198 } |
199 return _threadInfo_klass; | |
200 } | |
201 | |
202 klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { | |
203 if (_memoryUsage_klass == NULL) { | |
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204 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 205 } |
206 return _memoryUsage_klass; | |
207 } | |
208 | |
209 klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { | |
210 if (_memoryPoolMXBean_klass == NULL) { | |
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211 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 212 } |
213 return _memoryPoolMXBean_klass; | |
214 } | |
215 | |
216 klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { | |
217 if (_memoryManagerMXBean_klass == NULL) { | |
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218 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 219 } |
220 return _memoryManagerMXBean_klass; | |
221 } | |
222 | |
223 klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { | |
224 if (_garbageCollectorMXBean_klass == NULL) { | |
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225 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 226 } |
227 return _garbageCollectorMXBean_klass; | |
228 } | |
229 | |
230 klassOop Management::sun_management_Sensor_klass(TRAPS) { | |
231 if (_sensor_klass == NULL) { | |
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232 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 233 } |
234 return _sensor_klass; | |
235 } | |
236 | |
237 klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { | |
238 if (_managementFactory_klass == NULL) { | |
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239 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 240 } |
241 return _managementFactory_klass; | |
242 } | |
243 | |
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244 klassOop Management::sun_management_GarbageCollectorImpl_klass(TRAPS) { |
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245 if (_garbageCollectorImpl_klass == NULL) { |
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246 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL); |
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247 } |
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248 return _garbageCollectorImpl_klass; |
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249 } |
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250 |
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251 klassOop Management::com_sun_management_GcInfo_klass(TRAPS) { |
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252 if (_gcInfo_klass == NULL) { |
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253 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); |
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254 } |
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255 return _gcInfo_klass; |
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256 } |
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257 |
0 | 258 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
259 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
260 | |
261 jlong contended_time; | |
262 jlong waited_time; | |
263 if (ThreadService::is_thread_monitoring_contention()) { | |
264 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
265 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
266 } else { | |
267 // set them to -1 if thread contention monitoring is disabled. | |
268 contended_time = max_julong; | |
269 waited_time = max_julong; | |
270 } | |
271 | |
272 int thread_status = snapshot->thread_status(); | |
273 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
274 if (snapshot->is_ext_suspended()) { | |
275 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
276 } | |
277 if (snapshot->is_in_native()) { | |
278 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
279 } | |
280 | |
281 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
282 Handle stacktrace_h; | |
283 if (st != NULL) { | |
284 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
285 } else { | |
286 stacktrace_h = Handle(); | |
287 } | |
288 | |
289 args->push_oop(snapshot_thread); | |
290 args->push_int(thread_status); | |
291 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
292 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
293 args->push_long(snapshot->contended_enter_count()); | |
294 args->push_long(contended_time); | |
295 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
296 args->push_long(waited_time); | |
297 args->push_oop(stacktrace_h); | |
298 } | |
299 | |
300 // Helper function to construct a ThreadInfo object | |
301 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
302 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
303 instanceKlassHandle ik (THREAD, k); | |
304 | |
305 JavaValue result(T_VOID); | |
306 JavaCallArguments args(14); | |
307 | |
308 // First allocate a ThreadObj object and | |
309 // push the receiver as the first argument | |
310 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
311 args.push_oop(element); | |
312 | |
313 // initialize the arguments for the ThreadInfo constructor | |
314 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
315 | |
316 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
317 JavaCalls::call_special(&result, | |
318 ik, | |
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319 vmSymbols::object_initializer_name(), |
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320 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 321 &args, |
322 CHECK_NULL); | |
323 | |
324 return (instanceOop) element(); | |
325 } | |
326 | |
327 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
328 objArrayHandle monitors_array, | |
329 typeArrayHandle depths_array, | |
330 objArrayHandle synchronizers_array, | |
331 TRAPS) { | |
332 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
333 instanceKlassHandle ik (THREAD, k); | |
334 | |
335 JavaValue result(T_VOID); | |
336 JavaCallArguments args(17); | |
337 | |
338 // First allocate a ThreadObj object and | |
339 // push the receiver as the first argument | |
340 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
341 args.push_oop(element); | |
342 | |
343 // initialize the arguments for the ThreadInfo constructor | |
344 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
345 | |
346 // push the locked monitors and synchronizers in the arguments | |
347 args.push_oop(monitors_array); | |
348 args.push_oop(depths_array); | |
349 args.push_oop(synchronizers_array); | |
350 | |
351 // Call ThreadInfo constructor with locked monitors and synchronizers | |
352 JavaCalls::call_special(&result, | |
353 ik, | |
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354 vmSymbols::object_initializer_name(), |
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355 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 356 &args, |
357 CHECK_NULL); | |
358 | |
359 return (instanceOop) element(); | |
360 } | |
361 | |
362 // Helper functions | |
363 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
364 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
365 | |
366 JavaThread* java_thread = NULL; | |
367 // Sequential search for now. Need to do better optimization later. | |
368 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
369 oop tobj = thread->threadObj(); | |
370 if (!thread->is_exiting() && | |
371 tobj != NULL && | |
372 thread_id == java_lang_Thread::thread_id(tobj)) { | |
373 java_thread = thread; | |
374 break; | |
375 } | |
376 } | |
377 return java_thread; | |
378 } | |
379 | |
380 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
381 if (mgr == NULL) { | |
382 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
383 } | |
384 oop mgr_obj = JNIHandles::resolve(mgr); | |
385 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
386 | |
387 klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); | |
388 if (!h->is_a(k)) { | |
389 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
390 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
391 NULL); | |
392 } | |
393 | |
394 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
395 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
396 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
397 "Invalid GC memory manager", | |
398 NULL); | |
399 } | |
400 return (GCMemoryManager*) gc; | |
401 } | |
402 | |
403 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
404 if (obj == NULL) { | |
405 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
406 } | |
407 | |
408 oop pool_obj = JNIHandles::resolve(obj); | |
409 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
410 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
411 | |
412 return MemoryService::get_memory_pool(ph); | |
413 } | |
414 | |
415 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
416 int num_threads = ids_ah->length(); | |
417 | |
418 // Validate input thread IDs | |
419 int i = 0; | |
420 for (i = 0; i < num_threads; i++) { | |
421 jlong tid = ids_ah->long_at(i); | |
422 if (tid <= 0) { | |
423 // throw exception if invalid thread id. | |
424 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
425 "Invalid thread ID entry"); | |
426 } | |
427 } | |
428 } | |
429 | |
430 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
431 // check if the element of infoArray is of type ThreadInfo class | |
432 klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); | |
433 klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); | |
434 if (element_klass != threadinfo_klass) { | |
435 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
436 "infoArray element type is not ThreadInfo class"); | |
437 } | |
438 } | |
439 | |
440 | |
441 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
442 if (obj == NULL) { | |
443 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
444 } | |
445 | |
446 oop mgr_obj = JNIHandles::resolve(obj); | |
447 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
448 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
449 | |
450 return MemoryService::get_memory_manager(mh); | |
451 } | |
452 | |
453 // Returns a version string and sets major and minor version if | |
454 // the input parameters are non-null. | |
455 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
456 return JMM_VERSION; | |
457 JVM_END | |
458 | |
459 // Gets the list of VM monitoring and management optional supports | |
460 // Returns 0 if succeeded; otherwise returns non-zero. | |
461 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
462 if (support == NULL) { | |
463 return -1; | |
464 } | |
465 Management::get_optional_support(support); | |
466 return 0; | |
467 JVM_END | |
468 | |
469 // Returns a java.lang.String object containing the input arguments to the VM. | |
470 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
471 ResourceMark rm(THREAD); | |
472 | |
473 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
474 return NULL; | |
475 } | |
476 | |
477 char** vm_flags = Arguments::jvm_flags_array(); | |
478 char** vm_args = Arguments::jvm_args_array(); | |
479 int num_flags = Arguments::num_jvm_flags(); | |
480 int num_args = Arguments::num_jvm_args(); | |
481 | |
482 size_t length = 1; // null terminator | |
483 int i; | |
484 for (i = 0; i < num_flags; i++) { | |
485 length += strlen(vm_flags[i]); | |
486 } | |
487 for (i = 0; i < num_args; i++) { | |
488 length += strlen(vm_args[i]); | |
489 } | |
490 // add a space between each argument | |
491 length += num_flags + num_args - 1; | |
492 | |
493 // Return the list of input arguments passed to the VM | |
494 // and preserve the order that the VM processes. | |
495 char* args = NEW_RESOURCE_ARRAY(char, length); | |
496 args[0] = '\0'; | |
497 // concatenate all jvm_flags | |
498 if (num_flags > 0) { | |
499 strcat(args, vm_flags[0]); | |
500 for (i = 1; i < num_flags; i++) { | |
501 strcat(args, " "); | |
502 strcat(args, vm_flags[i]); | |
503 } | |
504 } | |
505 | |
506 if (num_args > 0 && num_flags > 0) { | |
507 // append a space if args already contains one or more jvm_flags | |
508 strcat(args, " "); | |
509 } | |
510 | |
511 // concatenate all jvm_args | |
512 if (num_args > 0) { | |
513 strcat(args, vm_args[0]); | |
514 for (i = 1; i < num_args; i++) { | |
515 strcat(args, " "); | |
516 strcat(args, vm_args[i]); | |
517 } | |
518 } | |
519 | |
520 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
521 return JNIHandles::make_local(env, hargs()); | |
522 JVM_END | |
523 | |
524 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
525 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
526 ResourceMark rm(THREAD); | |
527 | |
528 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
529 return NULL; | |
530 } | |
531 | |
532 char** vm_flags = Arguments::jvm_flags_array(); | |
533 char** vm_args = Arguments::jvm_args_array(); | |
534 int num_flags = Arguments::num_jvm_flags(); | |
535 int num_args = Arguments::num_jvm_args(); | |
536 | |
1142 | 537 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 538 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
539 objArrayHandle result_h(THREAD, r); | |
540 | |
541 int index = 0; | |
542 for (int j = 0; j < num_flags; j++, index++) { | |
543 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
544 result_h->obj_at_put(index, h()); | |
545 } | |
546 for (int i = 0; i < num_args; i++, index++) { | |
547 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
548 result_h->obj_at_put(index, h()); | |
549 } | |
550 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
551 JVM_END | |
552 | |
553 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
554 // one for each memory pool if obj == null; otherwise returns | |
555 // an array of memory pools for a given memory manager if | |
556 // it is a valid memory manager. | |
557 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
558 ResourceMark rm(THREAD); | |
559 | |
560 int num_memory_pools; | |
561 MemoryManager* mgr = NULL; | |
562 if (obj == NULL) { | |
563 num_memory_pools = MemoryService::num_memory_pools(); | |
564 } else { | |
565 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
566 if (mgr == NULL) { | |
567 return NULL; | |
568 } | |
569 num_memory_pools = mgr->num_memory_pools(); | |
570 } | |
571 | |
572 // Allocate the resulting MemoryPoolMXBean[] object | |
573 klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); | |
574 instanceKlassHandle ik (THREAD, k); | |
575 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
576 objArrayHandle poolArray(THREAD, r); | |
577 | |
578 if (mgr == NULL) { | |
579 // Get all memory pools | |
580 for (int i = 0; i < num_memory_pools; i++) { | |
581 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
582 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
583 instanceHandle ph(THREAD, p); | |
584 poolArray->obj_at_put(i, ph()); | |
585 } | |
586 } else { | |
587 // Get memory pools managed by a given memory manager | |
588 for (int i = 0; i < num_memory_pools; i++) { | |
589 MemoryPool* pool = mgr->get_memory_pool(i); | |
590 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
591 instanceHandle ph(THREAD, p); | |
592 poolArray->obj_at_put(i, ph()); | |
593 } | |
594 } | |
595 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
596 JVM_END | |
597 | |
598 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
599 // one for each memory manager if obj == null; otherwise returns | |
600 // an array of memory managers for a given memory pool if | |
601 // it is a valid memory pool. | |
602 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
603 ResourceMark rm(THREAD); | |
604 | |
605 int num_mgrs; | |
606 MemoryPool* pool = NULL; | |
607 if (obj == NULL) { | |
608 num_mgrs = MemoryService::num_memory_managers(); | |
609 } else { | |
610 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
611 if (pool == NULL) { | |
612 return NULL; | |
613 } | |
614 num_mgrs = pool->num_memory_managers(); | |
615 } | |
616 | |
617 // Allocate the resulting MemoryManagerMXBean[] object | |
618 klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); | |
619 instanceKlassHandle ik (THREAD, k); | |
620 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
621 objArrayHandle mgrArray(THREAD, r); | |
622 | |
623 if (pool == NULL) { | |
624 // Get all memory managers | |
625 for (int i = 0; i < num_mgrs; i++) { | |
626 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
627 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
628 instanceHandle ph(THREAD, p); | |
629 mgrArray->obj_at_put(i, ph()); | |
630 } | |
631 } else { | |
632 // Get memory managers for a given memory pool | |
633 for (int i = 0; i < num_mgrs; i++) { | |
634 MemoryManager* mgr = pool->get_memory_manager(i); | |
635 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
636 instanceHandle ph(THREAD, p); | |
637 mgrArray->obj_at_put(i, ph()); | |
638 } | |
639 } | |
640 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
641 JVM_END | |
642 | |
643 | |
644 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
645 // of a given memory pool. | |
646 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
647 ResourceMark rm(THREAD); | |
648 | |
649 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
650 if (pool != NULL) { | |
651 MemoryUsage usage = pool->get_memory_usage(); | |
652 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
653 return JNIHandles::make_local(env, h()); | |
654 } else { | |
655 return NULL; | |
656 } | |
657 JVM_END | |
658 | |
659 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
660 // of a given memory pool. | |
661 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
662 ResourceMark rm(THREAD); | |
663 | |
664 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
665 if (pool != NULL) { | |
666 MemoryUsage usage = pool->get_peak_memory_usage(); | |
667 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
668 return JNIHandles::make_local(env, h()); | |
669 } else { | |
670 return NULL; | |
671 } | |
672 JVM_END | |
673 | |
674 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
675 // of a given memory pool after most recent GC. | |
676 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
677 ResourceMark rm(THREAD); | |
678 | |
679 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
680 if (pool != NULL && pool->is_collected_pool()) { | |
681 MemoryUsage usage = pool->get_last_collection_usage(); | |
682 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
683 return JNIHandles::make_local(env, h()); | |
684 } else { | |
685 return NULL; | |
686 } | |
687 JVM_END | |
688 | |
689 // Sets the memory pool sensor for a threshold type | |
690 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
691 if (obj == NULL || sensorObj == NULL) { | |
692 THROW(vmSymbols::java_lang_NullPointerException()); | |
693 } | |
694 | |
695 klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); | |
696 oop s = JNIHandles::resolve(sensorObj); | |
697 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
698 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
699 if (!sensor_h->is_a(sensor_klass)) { | |
700 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
701 "Sensor is not an instance of sun.management.Sensor class"); | |
702 } | |
703 | |
704 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
705 assert(mpool != NULL, "MemoryPool should exist"); | |
706 | |
707 switch (type) { | |
708 case JMM_USAGE_THRESHOLD_HIGH: | |
709 case JMM_USAGE_THRESHOLD_LOW: | |
710 // have only one sensor for threshold high and low | |
711 mpool->set_usage_sensor_obj(sensor_h); | |
712 break; | |
713 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
714 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
715 // have only one sensor for threshold high and low | |
716 mpool->set_gc_usage_sensor_obj(sensor_h); | |
717 break; | |
718 default: | |
719 assert(false, "Unrecognized type"); | |
720 } | |
721 | |
722 JVM_END | |
723 | |
724 | |
725 // Sets the threshold of a given memory pool. | |
726 // Returns the previous threshold. | |
727 // | |
728 // Input parameters: | |
729 // pool - the MemoryPoolMXBean object | |
730 // type - threshold type | |
731 // threshold - the new threshold (must not be negative) | |
732 // | |
733 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
734 if (threshold < 0) { | |
735 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
736 "Invalid threshold value", | |
737 -1); | |
738 } | |
739 | |
489
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740 if ((size_t)threshold > max_uintx) { |
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741 stringStream st; |
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742 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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743 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 744 } |
745 | |
746 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
747 assert(pool != NULL, "MemoryPool should exist"); | |
748 | |
749 jlong prev = 0; | |
750 switch (type) { | |
751 case JMM_USAGE_THRESHOLD_HIGH: | |
752 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
753 return -1; | |
754 } | |
755 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
756 break; | |
757 | |
758 case JMM_USAGE_THRESHOLD_LOW: | |
759 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
760 return -1; | |
761 } | |
762 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
763 break; | |
764 | |
765 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
766 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
767 return -1; | |
768 } | |
769 // return and the new threshold is effective for the next GC | |
770 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
771 | |
772 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
773 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
774 return -1; | |
775 } | |
776 // return and the new threshold is effective for the next GC | |
777 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
778 | |
779 default: | |
780 assert(false, "Unrecognized type"); | |
781 return -1; | |
782 } | |
783 | |
784 // When the threshold is changed, reevaluate if the low memory | |
785 // detection is enabled. | |
786 if (prev != threshold) { | |
787 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
788 LowMemoryDetector::detect_low_memory(pool); | |
789 } | |
790 return prev; | |
791 JVM_END | |
792 | |
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793 // Gets an array containing the amount of memory allocated on the Java |
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794 // heap for a set of threads (in bytes). Each element of the array is |
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795 // the amount of memory allocated for the thread ID specified in the |
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796 // corresponding entry in the given array of thread IDs; or -1 if the |
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797 // thread does not exist or has terminated. |
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798 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
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799 jlongArray sizeArray)) |
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800 // Check if threads is null |
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801 if (ids == NULL || sizeArray == NULL) { |
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802 THROW(vmSymbols::java_lang_NullPointerException()); |
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803 } |
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804 |
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805 ResourceMark rm(THREAD); |
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806 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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807 typeArrayHandle ids_ah(THREAD, ta); |
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808 |
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809 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
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810 typeArrayHandle sizeArray_h(THREAD, sa); |
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811 |
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812 // validate the thread id array |
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813 validate_thread_id_array(ids_ah, CHECK); |
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814 |
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815 // sizeArray must be of the same length as the given array of thread IDs |
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816 int num_threads = ids_ah->length(); |
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817 if (num_threads != sizeArray_h->length()) { |
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818 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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819 "The length of the given long array does not match the length of " |
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820 "the given array of thread IDs"); |
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821 } |
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822 |
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823 MutexLockerEx ml(Threads_lock); |
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824 for (int i = 0; i < num_threads; i++) { |
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825 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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826 if (java_thread != NULL) { |
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827 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
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828 } |
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829 } |
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830 JVM_END |
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831 |
0 | 832 // Returns a java/lang/management/MemoryUsage object representing |
833 // the memory usage for the heap or non-heap memory. | |
834 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
835 ResourceMark rm(THREAD); | |
836 | |
837 // Calculate the memory usage | |
838 size_t total_init = 0; | |
839 size_t total_used = 0; | |
840 size_t total_committed = 0; | |
841 size_t total_max = 0; | |
842 bool has_undefined_init_size = false; | |
843 bool has_undefined_max_size = false; | |
844 | |
845 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
846 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
847 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
848 MemoryUsage u = pool->get_memory_usage(); | |
849 total_used += u.used(); | |
850 total_committed += u.committed(); | |
851 | |
852 // if any one of the memory pool has undefined init_size or max_size, | |
853 // set it to -1 | |
854 if (u.init_size() == (size_t)-1) { | |
855 has_undefined_init_size = true; | |
856 } | |
857 if (!has_undefined_init_size) { | |
858 total_init += u.init_size(); | |
859 } | |
860 | |
861 if (u.max_size() == (size_t)-1) { | |
862 has_undefined_max_size = true; | |
863 } | |
864 if (!has_undefined_max_size) { | |
865 total_max += u.max_size(); | |
866 } | |
867 } | |
868 } | |
869 | |
1757
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870 // In our current implementation, we make sure that all non-heap |
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871 // pools have defined init and max sizes. Heap pools do not matter, |
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872 // as we never use total_init and total_max for them. |
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873 assert(heap || !has_undefined_init_size, "Undefined init size"); |
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874 assert(heap || !has_undefined_max_size, "Undefined max size"); |
0 | 875 |
1064 | 876 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 877 total_used, |
878 total_committed, | |
879 (heap ? Universe::heap()->max_capacity() : total_max)); | |
880 | |
881 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
882 return JNIHandles::make_local(env, obj()); | |
883 JVM_END | |
884 | |
885 // Returns the boolean value of a given attribute. | |
886 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
887 switch (att) { | |
888 case JMM_VERBOSE_GC: | |
889 return MemoryService::get_verbose(); | |
890 case JMM_VERBOSE_CLASS: | |
891 return ClassLoadingService::get_verbose(); | |
892 case JMM_THREAD_CONTENTION_MONITORING: | |
893 return ThreadService::is_thread_monitoring_contention(); | |
894 case JMM_THREAD_CPU_TIME: | |
895 return ThreadService::is_thread_cpu_time_enabled(); | |
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896 case JMM_THREAD_ALLOCATED_MEMORY: |
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897 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 898 default: |
899 assert(0, "Unrecognized attribute"); | |
900 return false; | |
901 } | |
902 JVM_END | |
903 | |
904 // Sets the given boolean attribute and returns the previous value. | |
905 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
906 switch (att) { | |
907 case JMM_VERBOSE_GC: | |
908 return MemoryService::set_verbose(flag != 0); | |
909 case JMM_VERBOSE_CLASS: | |
910 return ClassLoadingService::set_verbose(flag != 0); | |
911 case JMM_THREAD_CONTENTION_MONITORING: | |
912 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
913 case JMM_THREAD_CPU_TIME: | |
914 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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915 case JMM_THREAD_ALLOCATED_MEMORY: |
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916 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 917 default: |
918 assert(0, "Unrecognized attribute"); | |
919 return false; | |
920 } | |
921 JVM_END | |
922 | |
923 | |
924 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
925 switch (att) { | |
926 case JMM_GC_TIME_MS: | |
927 return mgr->gc_time_ms(); | |
928 | |
929 case JMM_GC_COUNT: | |
930 return mgr->gc_count(); | |
931 | |
932 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
933 // current implementation only has 1 ext attribute | |
934 return 1; | |
935 | |
936 default: | |
937 assert(0, "Unrecognized GC attribute"); | |
938 return -1; | |
939 } | |
940 } | |
941 | |
942 class VmThreadCountClosure: public ThreadClosure { | |
943 private: | |
944 int _count; | |
945 public: | |
946 VmThreadCountClosure() : _count(0) {}; | |
947 void do_thread(Thread* thread); | |
948 int count() { return _count; } | |
949 }; | |
950 | |
951 void VmThreadCountClosure::do_thread(Thread* thread) { | |
952 // exclude externally visible JavaThreads | |
953 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
954 return; | |
955 } | |
956 | |
957 _count++; | |
958 } | |
959 | |
960 static jint get_vm_thread_count() { | |
961 VmThreadCountClosure vmtcc; | |
962 { | |
963 MutexLockerEx ml(Threads_lock); | |
964 Threads::threads_do(&vmtcc); | |
965 } | |
966 | |
967 return vmtcc.count(); | |
968 } | |
969 | |
970 static jint get_num_flags() { | |
971 // last flag entry is always NULL, so subtract 1 | |
972 int nFlags = (int) Flag::numFlags - 1; | |
973 int count = 0; | |
974 for (int i = 0; i < nFlags; i++) { | |
975 Flag* flag = &Flag::flags[i]; | |
350 | 976 // Exclude the locked (diagnostic, experimental) flags |
0 | 977 if (flag->is_unlocked() || flag->is_unlocker()) { |
978 count++; | |
979 } | |
980 } | |
981 return count; | |
982 } | |
983 | |
984 static jlong get_long_attribute(jmmLongAttribute att) { | |
985 switch (att) { | |
986 case JMM_CLASS_LOADED_COUNT: | |
987 return ClassLoadingService::loaded_class_count(); | |
988 | |
989 case JMM_CLASS_UNLOADED_COUNT: | |
990 return ClassLoadingService::unloaded_class_count(); | |
991 | |
992 case JMM_THREAD_TOTAL_COUNT: | |
993 return ThreadService::get_total_thread_count(); | |
994 | |
995 case JMM_THREAD_LIVE_COUNT: | |
996 return ThreadService::get_live_thread_count(); | |
997 | |
998 case JMM_THREAD_PEAK_COUNT: | |
999 return ThreadService::get_peak_thread_count(); | |
1000 | |
1001 case JMM_THREAD_DAEMON_COUNT: | |
1002 return ThreadService::get_daemon_thread_count(); | |
1003 | |
1004 case JMM_JVM_INIT_DONE_TIME_MS: | |
1005 return Management::vm_init_done_time(); | |
1006 | |
1007 case JMM_COMPILE_TOTAL_TIME_MS: | |
1008 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
1009 | |
1010 case JMM_OS_PROCESS_ID: | |
1011 return os::current_process_id(); | |
1012 | |
1013 // Hotspot-specific counters | |
1014 case JMM_CLASS_LOADED_BYTES: | |
1015 return ClassLoadingService::loaded_class_bytes(); | |
1016 | |
1017 case JMM_CLASS_UNLOADED_BYTES: | |
1018 return ClassLoadingService::unloaded_class_bytes(); | |
1019 | |
1020 case JMM_SHARED_CLASS_LOADED_COUNT: | |
1021 return ClassLoadingService::loaded_shared_class_count(); | |
1022 | |
1023 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
1024 return ClassLoadingService::unloaded_shared_class_count(); | |
1025 | |
1026 | |
1027 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1028 return ClassLoadingService::loaded_shared_class_bytes(); | |
1029 | |
1030 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1031 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1032 | |
1033 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1034 return ClassLoader::classloader_time_ms(); | |
1035 | |
1036 case JMM_VM_GLOBAL_COUNT: | |
1037 return get_num_flags(); | |
1038 | |
1039 case JMM_SAFEPOINT_COUNT: | |
1040 return RuntimeService::safepoint_count(); | |
1041 | |
1042 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1043 return RuntimeService::safepoint_sync_time_ms(); | |
1044 | |
1045 case JMM_TOTAL_STOPPED_TIME_MS: | |
1046 return RuntimeService::safepoint_time_ms(); | |
1047 | |
1048 case JMM_TOTAL_APP_TIME_MS: | |
1049 return RuntimeService::application_time_ms(); | |
1050 | |
1051 case JMM_VM_THREAD_COUNT: | |
1052 return get_vm_thread_count(); | |
1053 | |
1054 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1055 return ClassLoader::class_init_count(); | |
1056 | |
1057 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1058 return ClassLoader::class_init_time_ms(); | |
1059 | |
1060 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1061 return ClassLoader::class_verify_time_ms(); | |
1062 | |
1063 case JMM_METHOD_DATA_SIZE_BYTES: | |
1064 return ClassLoadingService::class_method_data_size(); | |
1065 | |
1066 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1067 return os::physical_memory(); | |
1068 | |
1069 default: | |
1070 return -1; | |
1071 } | |
1072 } | |
1073 | |
1074 | |
1075 // Returns the long value of a given attribute. | |
1076 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1077 if (obj == NULL) { | |
1078 return get_long_attribute(att); | |
1079 } else { | |
1080 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1081 if (mgr != NULL) { | |
1082 return get_gc_attribute(mgr, att); | |
1083 } | |
1084 } | |
1085 return -1; | |
1086 JVM_END | |
1087 | |
1088 // Gets the value of all attributes specified in the given array | |
1089 // and sets the value in the result array. | |
1090 // Returns the number of attributes found. | |
1091 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1092 jobject obj, | |
1093 jmmLongAttribute* atts, | |
1094 jint count, | |
1095 jlong* result)) | |
1096 | |
1097 int num_atts = 0; | |
1098 if (obj == NULL) { | |
1099 for (int i = 0; i < count; i++) { | |
1100 result[i] = get_long_attribute(atts[i]); | |
1101 if (result[i] != -1) { | |
1102 num_atts++; | |
1103 } | |
1104 } | |
1105 } else { | |
1106 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1107 for (int i = 0; i < count; i++) { | |
1108 result[i] = get_gc_attribute(mgr, atts[i]); | |
1109 if (result[i] != -1) { | |
1110 num_atts++; | |
1111 } | |
1112 } | |
1113 } | |
1114 return num_atts; | |
1115 JVM_END | |
1116 | |
1117 // Helper function to do thread dump for a specific list of threads | |
1118 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1119 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1120 int num_threads, | |
1121 int max_depth, | |
1122 bool with_locked_monitors, | |
1123 bool with_locked_synchronizers, | |
1124 TRAPS) { | |
1125 | |
1126 // First get an array of threadObj handles. | |
1127 // A JavaThread may terminate before we get the stack trace. | |
1128 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1129 { | |
1130 MutexLockerEx ml(Threads_lock); | |
1131 for (int i = 0; i < num_threads; i++) { | |
1132 jlong tid = ids_ah->long_at(i); | |
1133 JavaThread* jt = find_java_thread_from_id(tid); | |
1134 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
1135 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1136 thread_handle_array->append(threadObj_h); | |
1137 } | |
1138 } | |
1139 | |
1140 // Obtain thread dumps and thread snapshot information | |
1141 VM_ThreadDump op(dump_result, | |
1142 thread_handle_array, | |
1143 num_threads, | |
1144 max_depth, /* stack depth */ | |
1145 with_locked_monitors, | |
1146 with_locked_synchronizers); | |
1147 VMThread::execute(&op); | |
1148 } | |
1149 | |
1150 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1151 // for the thread ID specified in the corresponding entry in | |
1152 // the given array of thread IDs; or NULL if the thread does not exist | |
1153 // or has terminated. | |
1154 // | |
1155 // Input parameters: | |
1156 // ids - array of thread IDs | |
1157 // maxDepth - the maximum depth of stack traces to be dumped: | |
1158 // maxDepth == -1 requests to dump entire stack trace. | |
1159 // maxDepth == 0 requests no stack trace. | |
1160 // infoArray - array of ThreadInfo objects | |
1161 // | |
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1162 // QQQ - Why does this method return a value instead of void? |
0 | 1163 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1164 // Check if threads is null | |
1165 if (ids == NULL || infoArray == NULL) { | |
1166 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1167 } | |
1168 | |
1169 if (maxDepth < -1) { | |
1170 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1171 "Invalid maxDepth", -1); | |
1172 } | |
1173 | |
1174 ResourceMark rm(THREAD); | |
1175 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1176 typeArrayHandle ids_ah(THREAD, ta); | |
1177 | |
1178 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1179 objArrayOop oa = objArrayOop(infoArray_obj); | |
1180 objArrayHandle infoArray_h(THREAD, oa); | |
1181 | |
1182 // validate the thread id array | |
1183 validate_thread_id_array(ids_ah, CHECK_0); | |
1184 | |
1185 // validate the ThreadInfo[] parameters | |
1186 validate_thread_info_array(infoArray_h, CHECK_0); | |
1187 | |
1188 // infoArray must be of the same length as the given array of thread IDs | |
1189 int num_threads = ids_ah->length(); | |
1190 if (num_threads != infoArray_h->length()) { | |
1191 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1192 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1193 } | |
1194 | |
1195 if (JDK_Version::is_gte_jdk16x_version()) { | |
1196 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1197 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1198 } | |
1199 | |
1200 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1201 // GC may occur after the thread snapshots are taken but before | |
1202 // this function returns. The threadObj and other oops kept | |
1203 // in the ThreadSnapshot are marked and adjusted during GC. | |
1204 ThreadDumpResult dump_result(num_threads); | |
1205 | |
1206 if (maxDepth == 0) { | |
1207 // no stack trace dumped - do not need to stop the world | |
1208 { | |
1209 MutexLockerEx ml(Threads_lock); | |
1210 for (int i = 0; i < num_threads; i++) { | |
1211 jlong tid = ids_ah->long_at(i); | |
1212 JavaThread* jt = find_java_thread_from_id(tid); | |
1213 ThreadSnapshot* ts; | |
1214 if (jt == NULL) { | |
1215 // if the thread does not exist or now it is terminated, | |
1216 // create dummy snapshot | |
1217 ts = new ThreadSnapshot(); | |
1218 } else { | |
1219 ts = new ThreadSnapshot(jt); | |
1220 } | |
1221 dump_result.add_thread_snapshot(ts); | |
1222 } | |
1223 } | |
1224 } else { | |
1225 // obtain thread dump with the specific list of threads with stack trace | |
1226 do_thread_dump(&dump_result, | |
1227 ids_ah, | |
1228 num_threads, | |
1229 maxDepth, | |
1230 false, /* no locked monitor */ | |
1231 false, /* no locked synchronizers */ | |
1232 CHECK_0); | |
1233 } | |
1234 | |
1235 int num_snapshots = dump_result.num_snapshots(); | |
1236 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1237 int index = 0; | |
1238 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1239 // For each thread, create an java/lang/management/ThreadInfo object | |
1240 // and fill with the thread information | |
1241 | |
1242 if (ts->threadObj() == NULL) { | |
1243 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1244 infoArray_h->obj_at_put(index, NULL); | |
1245 continue; | |
1246 } | |
1247 | |
1248 // Create java.lang.management.ThreadInfo object | |
1249 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1250 infoArray_h->obj_at_put(index, info_obj); | |
1251 } | |
1252 return 0; | |
1253 JVM_END | |
1254 | |
1255 // Dump thread info for the specified threads. | |
1256 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1257 // for the thread ID specified in the corresponding entry in | |
1258 // the given array of thread IDs; or NULL if the thread does not exist | |
1259 // or has terminated. | |
1260 // | |
1261 // Input parameter: | |
1262 // ids - array of thread IDs; NULL indicates all live threads | |
1263 // locked_monitors - if true, dump locked object monitors | |
1264 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1265 // | |
1266 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1267 ResourceMark rm(THREAD); | |
1268 | |
1269 if (JDK_Version::is_gte_jdk16x_version()) { | |
1270 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1271 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1272 } | |
1273 | |
1274 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1275 int num_threads = (ta != NULL ? ta->length() : 0); | |
1276 typeArrayHandle ids_ah(THREAD, ta); | |
1277 | |
1278 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1279 | |
1280 if (ids_ah() != NULL) { | |
1281 | |
1282 // validate the thread id array | |
1283 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1284 | |
1285 // obtain thread dump of a specific list of threads | |
1286 do_thread_dump(&dump_result, | |
1287 ids_ah, | |
1288 num_threads, | |
1289 -1, /* entire stack */ | |
1290 (locked_monitors ? true : false), /* with locked monitors */ | |
1291 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1292 CHECK_NULL); | |
1293 } else { | |
1294 // obtain thread dump of all threads | |
1295 VM_ThreadDump op(&dump_result, | |
1296 -1, /* entire stack */ | |
1297 (locked_monitors ? true : false), /* with locked monitors */ | |
1298 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1299 VMThread::execute(&op); | |
1300 } | |
1301 | |
1302 int num_snapshots = dump_result.num_snapshots(); | |
1303 | |
1304 // create the result ThreadInfo[] object | |
1305 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
1306 instanceKlassHandle ik (THREAD, k); | |
1307 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1308 objArrayHandle result_h(THREAD, r); | |
1309 | |
1310 int index = 0; | |
1311 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1312 if (ts->threadObj() == NULL) { | |
1313 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1314 result_h->obj_at_put(index, NULL); | |
1315 continue; | |
1316 } | |
1317 | |
1318 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1319 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1320 | |
1321 // Create Object[] filled with locked monitors | |
1322 // Create int[] filled with the stack depth where a monitor was locked | |
1323 int num_frames = stacktrace->get_stack_depth(); | |
1324 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1325 | |
1326 // Count the total number of locked monitors | |
1327 for (int i = 0; i < num_frames; i++) { | |
1328 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1329 num_locked_monitors += frame->num_locked_monitors(); | |
1330 } | |
1331 | |
1332 objArrayHandle monitors_array; | |
1333 typeArrayHandle depths_array; | |
1334 objArrayHandle synchronizers_array; | |
1335 | |
1336 if (locked_monitors) { | |
1337 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1338 // where the thread locked it | |
2267
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1339 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
0 | 1340 objArrayHandle mh(THREAD, array); |
1341 monitors_array = mh; | |
1342 | |
1343 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1344 typeArrayHandle dh(THREAD, tarray); | |
1345 depths_array = dh; | |
1346 | |
1347 int count = 0; | |
1348 int j = 0; | |
1349 for (int depth = 0; depth < num_frames; depth++) { | |
1350 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1351 int len = frame->num_locked_monitors(); | |
1352 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1353 for (j = 0; j < len; j++) { | |
1354 oop monitor = locked_monitors->at(j); | |
1355 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1356 monitors_array->obj_at_put(count, monitor); | |
1357 depths_array->int_at_put(count, depth); | |
1358 count++; | |
1359 } | |
1360 } | |
1361 | |
1362 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1363 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1364 oop object = jni_locked_monitors->at(j); | |
1365 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1366 monitors_array->obj_at_put(count, object); | |
1367 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1368 depths_array->int_at_put(count, -1); | |
1369 count++; | |
1370 } | |
1371 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1372 } | |
1373 | |
1374 if (locked_synchronizers) { | |
1375 // Create Object[] filled with locked JSR-166 synchronizers | |
1376 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1377 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1378 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1379 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1380 | |
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1381 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
0 | 1382 objArrayHandle sh(THREAD, array); |
1383 synchronizers_array = sh; | |
1384 | |
1385 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1386 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1387 } | |
1388 } | |
1389 | |
1390 // Create java.lang.management.ThreadInfo object | |
1391 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1392 monitors_array, | |
1393 depths_array, | |
1394 synchronizers_array, | |
1395 CHECK_NULL); | |
1396 result_h->obj_at_put(index, info_obj); | |
1397 } | |
1398 | |
1399 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1400 JVM_END | |
1401 | |
1402 // Returns an array of Class objects. | |
1403 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1404 ResourceMark rm(THREAD); | |
1405 | |
1406 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1407 | |
1408 int num_classes = lce.num_loaded_classes(); | |
1142 | 1409 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1410 objArrayHandle classes_ah(THREAD, r); |
1411 | |
1412 for (int i = 0; i < num_classes; i++) { | |
1413 KlassHandle kh = lce.get_klass(i); | |
1414 oop mirror = Klass::cast(kh())->java_mirror(); | |
1415 classes_ah->obj_at_put(i, mirror); | |
1416 } | |
1417 | |
1418 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1419 JVM_END | |
1420 | |
1421 // Reset statistic. Return true if the requested statistic is reset. | |
1422 // Otherwise, return false. | |
1423 // | |
1424 // Input parameters: | |
1425 // obj - specify which instance the statistic associated with to be reset | |
1426 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1427 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1428 // type - the type of statistic to be reset | |
1429 // | |
1430 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1431 ResourceMark rm(THREAD); | |
1432 | |
1433 switch (type) { | |
1434 case JMM_STAT_PEAK_THREAD_COUNT: | |
1435 ThreadService::reset_peak_thread_count(); | |
1436 return true; | |
1437 | |
1438 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1439 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1440 jlong tid = obj.j; | |
1441 if (tid < 0) { | |
1442 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1443 } | |
1444 | |
1445 // Look for the JavaThread of this given tid | |
1446 MutexLockerEx ml(Threads_lock); | |
1447 if (tid == 0) { | |
1448 // reset contention statistics for all threads if tid == 0 | |
1449 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1450 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1451 ThreadService::reset_contention_count_stat(java_thread); | |
1452 } else { | |
1453 ThreadService::reset_contention_time_stat(java_thread); | |
1454 } | |
1455 } | |
1456 } else { | |
1457 // reset contention statistics for a given thread | |
1458 JavaThread* java_thread = find_java_thread_from_id(tid); | |
1459 if (java_thread == NULL) { | |
1460 return false; | |
1461 } | |
1462 | |
1463 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1464 ThreadService::reset_contention_count_stat(java_thread); | |
1465 } else { | |
1466 ThreadService::reset_contention_time_stat(java_thread); | |
1467 } | |
1468 } | |
1469 return true; | |
1470 break; | |
1471 } | |
1472 case JMM_STAT_PEAK_POOL_USAGE: { | |
1473 jobject o = obj.l; | |
1474 if (o == NULL) { | |
1475 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1476 } | |
1477 | |
1478 oop pool_obj = JNIHandles::resolve(o); | |
1479 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1480 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1481 | |
1482 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1483 if (pool != NULL) { | |
1484 pool->reset_peak_memory_usage(); | |
1485 return true; | |
1486 } | |
1487 break; | |
1488 } | |
1489 case JMM_STAT_GC_STAT: { | |
1490 jobject o = obj.l; | |
1491 if (o == NULL) { | |
1492 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1493 } | |
1494 | |
1495 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1496 if (mgr != NULL) { | |
1497 mgr->reset_gc_stat(); | |
1498 return true; | |
1499 } | |
1500 break; | |
1501 } | |
1502 default: | |
1503 assert(0, "Unknown Statistic Type"); | |
1504 } | |
1505 return false; | |
1506 JVM_END | |
1507 | |
1508 // Returns the fast estimate of CPU time consumed by | |
1509 // a given thread (in nanoseconds). | |
1510 // If thread_id == 0, return CPU time for the current thread. | |
1511 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1512 if (!os::is_thread_cpu_time_supported()) { | |
1513 return -1; | |
1514 } | |
1515 | |
1516 if (thread_id < 0) { | |
1517 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1518 "Invalid thread ID", -1); | |
1519 } | |
1520 | |
1521 JavaThread* java_thread = NULL; | |
1522 if (thread_id == 0) { | |
1523 // current thread | |
1524 return os::current_thread_cpu_time(); | |
1525 } else { | |
1526 MutexLockerEx ml(Threads_lock); | |
1527 java_thread = find_java_thread_from_id(thread_id); | |
1528 if (java_thread != NULL) { | |
1529 return os::thread_cpu_time((Thread*) java_thread); | |
1530 } | |
1531 } | |
1532 return -1; | |
1533 JVM_END | |
1534 | |
1535 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
1536 // If thread_id == 0, CPU time for the current thread is returned. | |
1537 // If user_sys_cpu_time = true, user level and system CPU time of | |
1538 // a given thread is returned; otherwise, only user level CPU time | |
1539 // is returned. | |
1540 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
1541 if (!os::is_thread_cpu_time_supported()) { | |
1542 return -1; | |
1543 } | |
1544 | |
1545 if (thread_id < 0) { | |
1546 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1547 "Invalid thread ID", -1); | |
1548 } | |
1549 | |
1550 JavaThread* java_thread = NULL; | |
1551 if (thread_id == 0) { | |
1552 // current thread | |
1553 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
1554 } else { | |
1555 MutexLockerEx ml(Threads_lock); | |
1556 java_thread = find_java_thread_from_id(thread_id); | |
1557 if (java_thread != NULL) { | |
1558 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
1559 } | |
1560 } | |
1561 return -1; | |
1562 JVM_END | |
1563 | |
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1564 // Gets an array containing the CPU times consumed by a set of threads |
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1565 // (in nanoseconds). Each element of the array is the CPU time for the |
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1566 // thread ID specified in the corresponding entry in the given array |
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1567 // of thread IDs; or -1 if the thread does not exist or has terminated. |
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1568 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
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1569 // for the given thread is returned; otherwise, only user level CPU time |
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1570 // is returned. |
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1571 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
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1572 jlongArray timeArray, |
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1573 jboolean user_sys_cpu_time)) |
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1574 // Check if threads is null |
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1575 if (ids == NULL || timeArray == NULL) { |
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1576 THROW(vmSymbols::java_lang_NullPointerException()); |
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1577 } |
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1578 |
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1579 ResourceMark rm(THREAD); |
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1580 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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1581 typeArrayHandle ids_ah(THREAD, ta); |
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1582 |
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1583 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
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1584 typeArrayHandle timeArray_h(THREAD, tia); |
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1585 |
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1586 // validate the thread id array |
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1587 validate_thread_id_array(ids_ah, CHECK); |
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1588 |
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1589 // timeArray must be of the same length as the given array of thread IDs |
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1590 int num_threads = ids_ah->length(); |
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1591 if (num_threads != timeArray_h->length()) { |
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1592 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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1593 "The length of the given long array does not match the length of " |
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1594 "the given array of thread IDs"); |
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1595 } |
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|
1596 |
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1597 MutexLockerEx ml(Threads_lock); |
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1598 for (int i = 0; i < num_threads; i++) { |
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1599 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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1600 if (java_thread != NULL) { |
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1601 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
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1602 user_sys_cpu_time != 0)); |
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1603 } |
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1604 } |
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1605 JVM_END |
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1606 |
0 | 1607 // Returns a String array of all VM global flag names |
1608 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1609 // last flag entry is always NULL, so subtract 1 | |
1610 int nFlags = (int) Flag::numFlags - 1; | |
1611 // allocate a temp array | |
1142 | 1612 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1613 nFlags, CHECK_0); |
1614 objArrayHandle flags_ah(THREAD, r); | |
1615 int num_entries = 0; | |
1616 for (int i = 0; i < nFlags; i++) { | |
1617 Flag* flag = &Flag::flags[i]; | |
350 | 1618 // Exclude the locked (experimental, diagnostic) flags |
0 | 1619 if (flag->is_unlocked() || flag->is_unlocker()) { |
1620 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
1621 flags_ah->obj_at_put(num_entries, s()); | |
1622 num_entries++; | |
1623 } | |
1624 } | |
1625 | |
1626 if (num_entries < nFlags) { | |
1627 // Return array of right length | |
1142 | 1628 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1629 for(int i = 0; i < num_entries; i++) { |
1630 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1631 } | |
1632 return (jobjectArray)JNIHandles::make_local(env, res); | |
1633 } | |
1634 | |
1635 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1636 JVM_END | |
1637 | |
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1638 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1639 // can't be determined, true otherwise. If false is returned, then *global |
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1640 // will be incomplete and invalid. |
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1641 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1642 Handle flag_name; |
1643 if (name() == NULL) { | |
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1644 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
0 | 1645 } else { |
1646 flag_name = name; | |
1647 } | |
1648 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1649 | |
1650 if (flag->is_bool()) { | |
1651 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1652 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1653 } else if (flag->is_intx()) { | |
1654 global->value.j = (jlong)flag->get_intx(); | |
1655 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1656 } else if (flag->is_uintx()) { | |
1657 global->value.j = (jlong)flag->get_uintx(); | |
1658 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1659 } else if (flag->is_uint64_t()) { |
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1660 global->value.j = (jlong)flag->get_uint64_t(); |
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1661 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1662 } else if (flag->is_ccstr()) { |
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1663 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1664 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1665 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1666 } else { |
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1667 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1668 return false; |
0 | 1669 } |
1670 | |
1671 global->writeable = flag->is_writeable(); | |
1672 global->external = flag->is_external(); | |
1673 switch (flag->origin) { | |
1674 case DEFAULT: | |
1675 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
1676 break; | |
1677 case COMMAND_LINE: | |
1678 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
1679 break; | |
1680 case ENVIRON_VAR: | |
1681 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
1682 break; | |
1683 case CONFIG_FILE: | |
1684 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
1685 break; | |
1686 case MANAGEMENT: | |
1687 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
1688 break; | |
1689 case ERGONOMIC: | |
1690 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
1691 break; | |
1692 default: | |
1693 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1694 } | |
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1695 |
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1696 return true; |
0 | 1697 } |
1698 | |
1699 // Fill globals array of count length with jmmVMGlobal entries | |
1700 // specified by names. If names == NULL, fill globals array | |
1701 // with all Flags. Return value is number of entries | |
1702 // created in globals. | |
1703 // If a Flag with a given name in an array element does not | |
1704 // exist, globals[i].name will be set to NULL. | |
1705 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1706 jobjectArray names, | |
1707 jmmVMGlobal *globals, | |
1708 jint count)) | |
1709 | |
1710 | |
1711 if (globals == NULL) { | |
1712 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1713 } | |
1714 | |
1715 ResourceMark rm(THREAD); | |
1716 | |
1717 if (names != NULL) { | |
1718 // return the requested globals | |
1719 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1720 objArrayHandle names_ah(THREAD, ta); | |
1721 // Make sure we have a String array | |
1722 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1723 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1724 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1725 "Array element type is not String class", 0); | |
1726 } | |
1727 | |
1728 int names_length = names_ah->length(); | |
1729 int num_entries = 0; | |
1730 for (int i = 0; i < names_length && i < count; i++) { | |
1731 oop s = names_ah->obj_at(i); | |
1732 if (s == NULL) { | |
1733 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1734 } | |
1735 | |
1736 Handle sh(THREAD, s); | |
1737 char* str = java_lang_String::as_utf8_string(s); | |
1738 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1739 if (flag != NULL && |
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1740 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1741 num_entries++; |
1742 } else { | |
1743 globals[i].name = NULL; | |
1744 } | |
1745 } | |
1746 return num_entries; | |
1747 } else { | |
1748 // return all globals if names == NULL | |
1749 | |
1750 // last flag entry is always NULL, so subtract 1 | |
1751 int nFlags = (int) Flag::numFlags - 1; | |
1752 Handle null_h; | |
1753 int num_entries = 0; | |
1754 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1755 Flag* flag = &Flag::flags[i]; | |
350 | 1756 // Exclude the locked (diagnostic, experimental) flags |
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1757 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1758 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1759 num_entries++; |
1760 } | |
1761 } | |
1762 return num_entries; | |
1763 } | |
1764 JVM_END | |
1765 | |
1766 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1767 ResourceMark rm(THREAD); | |
1768 | |
1769 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1770 if (fn == NULL) { | |
1771 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1772 "The flag name cannot be null."); | |
1773 } | |
1774 char* name = java_lang_String::as_utf8_string(fn); | |
1775 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1776 if (flag == NULL) { | |
1777 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1778 "Flag does not exist."); | |
1779 } | |
1780 if (!flag->is_writeable()) { | |
1781 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1782 "This flag is not writeable."); | |
1783 } | |
1784 | |
1785 bool succeed; | |
1786 if (flag->is_bool()) { | |
1787 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
1788 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
1789 } else if (flag->is_intx()) { | |
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1790 intx ivalue = (intx)new_value.j; |
0 | 1791 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
1792 } else if (flag->is_uintx()) { | |
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1793 uintx uvalue = (uintx)new_value.j; |
0 | 1794 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1795 } else if (flag->is_uint64_t()) { |
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1796 uint64_t uvalue = (uint64_t)new_value.j; |
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1797 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
0 | 1798 } else if (flag->is_ccstr()) { |
1799 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1800 if (str == NULL) { | |
1801 THROW(vmSymbols::java_lang_NullPointerException()); | |
1802 } | |
1803 ccstr svalue = java_lang_String::as_utf8_string(str); | |
1804 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
1805 } | |
1806 assert(succeed, "Setting flag should succeed"); | |
1807 JVM_END | |
1808 | |
1809 class ThreadTimesClosure: public ThreadClosure { | |
1810 private: | |
1811 objArrayOop _names; | |
1812 typeArrayOop _times; | |
1813 int _names_len; | |
1814 int _times_len; | |
1815 int _count; | |
1816 | |
1817 public: | |
1818 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
1819 virtual void do_thread(Thread* thread); | |
1820 int count() { return _count; } | |
1821 }; | |
1822 | |
1823 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
1824 typeArrayOop times) { | |
1825 assert(names != NULL, "names was NULL"); | |
1826 assert(times != NULL, "times was NULL"); | |
1827 _names = names; | |
1828 _names_len = names->length(); | |
1829 _times = times; | |
1830 _times_len = times->length(); | |
1831 _count = 0; | |
1832 } | |
1833 | |
1834 void ThreadTimesClosure::do_thread(Thread* thread) { | |
1835 Handle s; | |
1836 assert(thread != NULL, "thread was NULL"); | |
1837 | |
1838 // exclude externally visible JavaThreads | |
1839 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1840 return; | |
1841 } | |
1842 | |
1843 if (_count >= _names_len || _count >= _times_len) { | |
1844 // skip if the result array is not big enough | |
1845 return; | |
1846 } | |
1847 | |
1848 EXCEPTION_MARK; | |
1849 | |
1850 assert(thread->name() != NULL, "All threads should have a name"); | |
1851 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
1852 _names->obj_at_put(_count, s()); | |
1853 | |
1854 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
1855 os::thread_cpu_time(thread) : -1); | |
1856 _count++; | |
1857 } | |
1858 | |
1859 // Fills names with VM internal thread names and times with the corresponding | |
1860 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1861 // If the element type of names is not String, an IllegalArgumentException is | |
1862 // thrown. | |
1863 // If an array is not large enough to hold all the entries, only the entries | |
1864 // that fit will be returned. Return value is the number of VM internal | |
1865 // threads entries. | |
1866 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1867 jobjectArray names, | |
1868 jlongArray times)) | |
1869 if (names == NULL || times == NULL) { | |
1870 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1871 } | |
1872 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1873 objArrayHandle names_ah(THREAD, na); | |
1874 | |
1875 // Make sure we have a String array | |
1876 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1877 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1878 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1879 "Array element type is not String class", 0); | |
1880 } | |
1881 | |
1882 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1883 typeArrayHandle times_ah(THREAD, ta); | |
1884 | |
1885 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
1886 { | |
1887 MutexLockerEx ml(Threads_lock); | |
1888 Threads::threads_do(&ttc); | |
1889 } | |
1890 | |
1891 return ttc.count(); | |
1892 JVM_END | |
1893 | |
1894 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1895 ResourceMark rm(THREAD); | |
1896 | |
1897 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1898 VMThread::execute(&op); | |
1899 | |
1900 DeadlockCycle* deadlocks = op.result(); | |
1901 if (deadlocks == NULL) { | |
1902 // no deadlock found and return | |
1903 return Handle(); | |
1904 } | |
1905 | |
1906 int num_threads = 0; | |
1907 DeadlockCycle* cycle; | |
1908 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1909 num_threads += cycle->num_threads(); | |
1910 } | |
1911 | |
1142 | 1912 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1913 objArrayHandle threads_ah(THREAD, r); |
1914 | |
1915 int index = 0; | |
1916 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1917 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1918 int len = deadlock_threads->length(); | |
1919 for (int i = 0; i < len; i++) { | |
1920 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1921 index++; | |
1922 } | |
1923 } | |
1924 return threads_ah; | |
1925 } | |
1926 | |
1927 // Finds cycles of threads that are deadlocked involved in object monitors | |
1928 // and JSR-166 synchronizers. | |
1929 // Returns an array of Thread objects which are in deadlock, if any. | |
1930 // Otherwise, returns NULL. | |
1931 // | |
1932 // Input parameter: | |
1933 // object_monitors_only - if true, only check object monitors | |
1934 // | |
1935 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1936 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1937 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1938 JVM_END | |
1939 | |
1940 // Finds cycles of threads that are deadlocked on monitor locks | |
1941 // Returns an array of Thread objects which are in deadlock, if any. | |
1942 // Otherwise, returns NULL. | |
1943 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1944 Handle result = find_deadlocks(true, CHECK_0); | |
1945 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1946 JVM_END | |
1947 | |
1948 // Gets the information about GC extension attributes including | |
1949 // the name of the attribute, its type, and a short description. | |
1950 // | |
1951 // Input parameters: | |
1952 // mgr - GC memory manager | |
1953 // info - caller allocated array of jmmExtAttributeInfo | |
1954 // count - number of elements of the info array | |
1955 // | |
1956 // Returns the number of GC extension attributes filled in the info array; or | |
1957 // -1 if info is not big enough | |
1958 // | |
1959 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1960 // All GC memory managers have 1 attribute (number of GC threads) | |
1961 if (count == 0) { | |
1962 return 0; | |
1963 } | |
1964 | |
1965 if (info == NULL) { | |
1966 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1967 } | |
1968 | |
1969 info[0].name = "GcThreadCount"; | |
1970 info[0].type = 'I'; | |
1971 info[0].description = "Number of GC threads"; | |
1972 return 1; | |
1973 JVM_END | |
1974 | |
1975 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1976 // of a given length and return the objArrayOop | |
1977 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1978 if (array == NULL) { | |
1979 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1980 } | |
1981 | |
1982 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1983 objArrayHandle array_h(THREAD, oa); | |
1984 | |
1985 // array must be of the given length | |
1986 if (length != array_h->length()) { | |
1987 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1988 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
1989 } | |
1990 | |
1991 // check if the element of array is of type MemoryUsage class | |
1992 klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); | |
1993 klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); | |
1994 if (element_klass != usage_klass) { | |
1995 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1996 "The element type is not MemoryUsage class", 0); | |
1997 } | |
1998 | |
1999 return array_h(); | |
2000 } | |
2001 | |
2002 // Gets the statistics of the last GC of a given GC memory manager. | |
2003 // Input parameters: | |
2004 // obj - GarbageCollectorMXBean object | |
2005 // gc_stat - caller allocated jmmGCStat where: | |
2006 // a. before_gc_usage - array of MemoryUsage objects | |
2007 // b. after_gc_usage - array of MemoryUsage objects | |
2008 // c. gc_ext_attributes_values_size is set to the | |
2009 // gc_ext_attribute_values array allocated | |
2010 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
2011 // | |
2012 // On return, | |
2013 // gc_index == 0 indicates no GC statistics available | |
2014 // | |
2015 // before_gc_usage and after_gc_usage - filled with per memory pool | |
2016 // before and after GC usage in the same order as the memory pools | |
2017 // returned by GetMemoryPools for a given GC memory manager. | |
2018 // num_gc_ext_attributes indicates the number of elements in | |
2019 // the gc_ext_attribute_values array is filled; or | |
2020 // -1 if the gc_ext_attributes_values array is not big enough | |
2021 // | |
2022 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
2023 ResourceMark rm(THREAD); | |
2024 | |
2025 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
2026 THROW(vmSymbols::java_lang_NullPointerException()); | |
2027 } | |
2028 | |
2029 // Get the GCMemoryManager | |
2030 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
2031 | |
2032 // Make a copy of the last GC statistics | |
2033 // GC may occur while constructing the last GC information | |
2034 int num_pools = MemoryService::num_memory_pools(); | |
2035 GCStatInfo* stat = new GCStatInfo(num_pools); | |
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2036 if (mgr->get_last_gc_stat(stat) == 0) { |
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2037 gc_stat->gc_index = 0; |
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2038 return; |
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2039 } |
0 | 2040 |
2041 gc_stat->gc_index = stat->gc_index(); | |
2042 gc_stat->start_time = Management::ticks_to_ms(stat->start_time()); | |
2043 gc_stat->end_time = Management::ticks_to_ms(stat->end_time()); | |
2044 | |
2045 // Current implementation does not have GC extension attributes | |
2046 gc_stat->num_gc_ext_attributes = 0; | |
2047 | |
2048 // Fill the arrays of MemoryUsage objects with before and after GC | |
2049 // per pool memory usage | |
2050 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2051 num_pools, | |
2052 CHECK); | |
2053 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2054 | |
2055 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2056 num_pools, | |
2057 CHECK); | |
2058 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2059 | |
2060 for (int i = 0; i < num_pools; i++) { | |
2061 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK); | |
2062 Handle after_usage; | |
2063 | |
2064 MemoryUsage u = stat->after_gc_usage_for_pool(i); | |
2065 if (u.max_size() == 0 && u.used() > 0) { | |
2066 // If max size == 0, this pool is a survivor space. | |
2067 // Set max size = -1 since the pools will be swapped after GC. | |
2068 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2069 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2070 } else { | |
2071 after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK); | |
2072 } | |
2073 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2074 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2075 } | |
2076 | |
2077 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2078 // Current implementation only has 1 attribute (number of GC threads) | |
2079 // The type is 'I' | |
2080 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2081 } | |
2082 JVM_END | |
2083 | |
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2084 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) |
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2085 ResourceMark rm(THREAD); |
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2086 // Get the GCMemoryManager |
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2087 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
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2088 mgr->set_notification_enabled(enabled?true:false); |
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2089 JVM_END |
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2090 |
0 | 2091 // Dump heap - Returns 0 if succeeds. |
2092 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
2093 #ifndef SERVICES_KERNEL | |
2094 ResourceMark rm(THREAD); | |
2095 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2096 if (on == NULL) { | |
2097 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2098 "Output file name cannot be null.", -1); | |
2099 } | |
2100 char* name = java_lang_String::as_utf8_string(on); | |
2101 if (name == NULL) { | |
2102 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2103 "Output file name cannot be null.", -1); | |
2104 } | |
2105 HeapDumper dumper(live ? true : false); | |
2106 if (dumper.dump(name) != 0) { | |
2107 const char* errmsg = dumper.error_as_C_string(); | |
2108 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2109 } | |
2110 return 0; | |
2111 #else // SERVICES_KERNEL | |
2112 return -1; | |
2113 #endif // SERVICES_KERNEL | |
2114 JVM_END | |
2115 | |
4133 | 2116 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env)) |
2117 ResourceMark rm(THREAD); | |
2118 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(); | |
2119 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(), | |
2120 dcmd_list->length(), CHECK_NULL); | |
2121 objArrayHandle cmd_array(THREAD, cmd_array_oop); | |
2122 for (int i = 0; i < dcmd_list->length(); i++) { | |
2123 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL); | |
2124 cmd_array->obj_at_put(i, cmd_name); | |
2125 } | |
2126 return (jobjectArray) JNIHandles::make_local(env, cmd_array()); | |
2127 JVM_END | |
2128 | |
2129 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds, | |
2130 dcmdInfo* infoArray)) | |
2131 if (cmds == NULL || infoArray == NULL) { | |
2132 THROW(vmSymbols::java_lang_NullPointerException()); | |
2133 } | |
2134 | |
2135 ResourceMark rm(THREAD); | |
2136 | |
2137 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds)); | |
2138 objArrayHandle cmds_ah(THREAD, ca); | |
2139 | |
2140 // Make sure we have a String array | |
2141 klassOop element_klass = objArrayKlass::cast(cmds_ah->klass())->element_klass(); | |
2142 if (element_klass != SystemDictionary::String_klass()) { | |
2143 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2144 "Array element type is not String class"); | |
2145 } | |
2146 | |
2147 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(); | |
2148 | |
2149 int num_cmds = cmds_ah->length(); | |
2150 for (int i = 0; i < num_cmds; i++) { | |
2151 oop cmd = cmds_ah->obj_at(i); | |
2152 if (cmd == NULL) { | |
2153 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2154 "Command name cannot be null."); | |
2155 } | |
2156 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2157 if (cmd_name == NULL) { | |
2158 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2159 "Command name cannot be null."); | |
2160 } | |
2161 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name); | |
2162 if (pos == -1) { | |
2163 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2164 "Unknown diagnostic command"); | |
2165 } | |
2166 DCmdInfo* info = info_list->at(pos); | |
2167 infoArray[i].name = info->name(); | |
2168 infoArray[i].description = info->description(); | |
2169 infoArray[i].impact = info->impact(); | |
2170 infoArray[i].num_arguments = info->num_arguments(); | |
2171 infoArray[i].enabled = info->is_enabled(); | |
2172 } | |
2173 JVM_END | |
2174 | |
2175 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env, | |
2176 jstring command, dcmdArgInfo* infoArray)) | |
2177 ResourceMark rm(THREAD); | |
2178 oop cmd = JNIHandles::resolve_external_guard(command); | |
2179 if (cmd == NULL) { | |
2180 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2181 "Command line cannot be null."); | |
2182 } | |
2183 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2184 if (cmd_name == NULL) { | |
2185 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2186 "Command line content cannot be null."); | |
2187 } | |
2188 DCmd* dcmd = NULL; | |
2189 DCmdFactory*factory = DCmdFactory::factory(cmd_name, strlen(cmd_name)); | |
2190 if (factory != NULL) { | |
2191 dcmd = factory->create_resource_instance(NULL); | |
2192 } | |
2193 if (dcmd == NULL) { | |
2194 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2195 "Unknown diagnostic command"); | |
2196 } | |
2197 DCmdMark mark(dcmd); | |
2198 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array(); | |
2199 if (array->length() == 0) { | |
2200 return; | |
2201 } | |
2202 for (int i = 0; i < array->length(); i++) { | |
2203 infoArray[i].name = array->at(i)->name(); | |
2204 infoArray[i].description = array->at(i)->description(); | |
2205 infoArray[i].type = array->at(i)->type(); | |
2206 infoArray[i].default_string = array->at(i)->default_string(); | |
2207 infoArray[i].mandatory = array->at(i)->is_mandatory(); | |
2208 infoArray[i].option = array->at(i)->is_option(); | |
2209 infoArray[i].position = array->at(i)->position(); | |
2210 } | |
2211 return; | |
2212 JVM_END | |
2213 | |
2214 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline)) | |
2215 ResourceMark rm(THREAD); | |
2216 oop cmd = JNIHandles::resolve_external_guard(commandline); | |
2217 if (cmd == NULL) { | |
2218 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2219 "Command line cannot be null."); | |
2220 } | |
2221 char* cmdline = java_lang_String::as_utf8_string(cmd); | |
2222 if (cmdline == NULL) { | |
2223 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2224 "Command line content cannot be null."); | |
2225 } | |
2226 bufferedStream output; | |
2227 DCmd::parse_and_execute(&output, cmdline, ' ', CHECK_NULL); | |
2228 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL); | |
2229 return (jstring) JNIHandles::make_local(env, result); | |
2230 JVM_END | |
2231 | |
0 | 2232 jlong Management::ticks_to_ms(jlong ticks) { |
2233 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2234 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2235 * (double)1000.0); | |
2236 } | |
2237 | |
2238 const struct jmmInterface_1_ jmm_interface = { | |
2239 NULL, | |
2240 NULL, | |
2241 jmm_GetVersion, | |
2242 jmm_GetOptionalSupport, | |
2243 jmm_GetInputArguments, | |
2244 jmm_GetThreadInfo, | |
2245 jmm_GetInputArgumentArray, | |
2246 jmm_GetMemoryPools, | |
2247 jmm_GetMemoryManagers, | |
2248 jmm_GetMemoryPoolUsage, | |
2249 jmm_GetPeakMemoryPoolUsage, | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
1972
diff
changeset
|
2250 jmm_GetThreadAllocatedMemory, |
0 | 2251 jmm_GetMemoryUsage, |
2252 jmm_GetLongAttribute, | |
2253 jmm_GetBoolAttribute, | |
2254 jmm_SetBoolAttribute, | |
2255 jmm_GetLongAttributes, | |
2256 jmm_FindMonitorDeadlockedThreads, | |
2257 jmm_GetThreadCpuTime, | |
2258 jmm_GetVMGlobalNames, | |
2259 jmm_GetVMGlobals, | |
2260 jmm_GetInternalThreadTimes, | |
2261 jmm_ResetStatistic, | |
2262 jmm_SetPoolSensor, | |
2263 jmm_SetPoolThreshold, | |
2264 jmm_GetPoolCollectionUsage, | |
2265 jmm_GetGCExtAttributeInfo, | |
2266 jmm_GetLastGCStat, | |
2267 jmm_GetThreadCpuTimeWithKind, | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
1972
diff
changeset
|
2268 jmm_GetThreadCpuTimesWithKind, |
0 | 2269 jmm_DumpHeap0, |
2270 jmm_FindDeadlockedThreads, | |
2271 jmm_SetVMGlobal, | |
2272 NULL, | |
3356
78542e2b5e35
7036199: Adding a notification to the implementation of GarbageCollectorMXBeans
fparain
parents:
2267
diff
changeset
|
2273 jmm_DumpThreads, |
4133 | 2274 jmm_SetGCNotificationEnabled, |
2275 jmm_GetDiagnosticCommands, | |
2276 jmm_GetDiagnosticCommandInfo, | |
2277 jmm_GetDiagnosticCommandArgumentsInfo, | |
2278 jmm_ExecuteDiagnosticCommand | |
0 | 2279 }; |
2280 | |
2281 void* Management::get_jmm_interface(int version) { | |
2282 if (version == JMM_VERSION_1_0) { | |
2283 return (void*) &jmm_interface; | |
2284 } | |
2285 return NULL; | |
2286 } |