Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 4825:20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
Summary: Make sure that CompilationPolicy::event() doesn't throw exceptions
Reviewed-by: kvn, never
author | iveresov |
---|---|
date | Thu, 26 Jan 2012 12:15:24 -0800 |
parents | 4f25538b54c9 |
children | bf864f701a4a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "compiler/compileBroker.hpp" | |
28 #include "memory/iterator.hpp" | |
29 #include "memory/oopFactory.hpp" | |
30 #include "memory/resourceArea.hpp" | |
31 #include "oops/klass.hpp" | |
32 #include "oops/klassOop.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/oop.inline.hpp" | |
35 #include "runtime/arguments.hpp" | |
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36 #include "runtime/globals.hpp" |
1972 | 37 #include "runtime/handles.inline.hpp" |
38 #include "runtime/interfaceSupport.hpp" | |
39 #include "runtime/javaCalls.hpp" | |
40 #include "runtime/jniHandles.hpp" | |
41 #include "runtime/os.hpp" | |
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42 #include "runtime/serviceThread.hpp" |
1972 | 43 #include "services/classLoadingService.hpp" |
4133 | 44 #include "services/diagnosticCommand.hpp" |
45 #include "services/diagnosticFramework.hpp" | |
1972 | 46 #include "services/heapDumper.hpp" |
4133 | 47 #include "services/jmm.h" |
1972 | 48 #include "services/lowMemoryDetector.hpp" |
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49 #include "services/gcNotifier.hpp" |
1972 | 50 #include "services/management.hpp" |
51 #include "services/memoryManager.hpp" | |
52 #include "services/memoryPool.hpp" | |
53 #include "services/memoryService.hpp" | |
54 #include "services/runtimeService.hpp" | |
55 #include "services/threadService.hpp" | |
0 | 56 |
57 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
58 PerfVariable* Management::_end_vm_creation_time = NULL; | |
59 PerfVariable* Management::_vm_init_done_time = NULL; | |
60 | |
61 klassOop Management::_sensor_klass = NULL; | |
62 klassOop Management::_threadInfo_klass = NULL; | |
63 klassOop Management::_memoryUsage_klass = NULL; | |
64 klassOop Management::_memoryPoolMXBean_klass = NULL; | |
65 klassOop Management::_memoryManagerMXBean_klass = NULL; | |
66 klassOop Management::_garbageCollectorMXBean_klass = NULL; | |
67 klassOop Management::_managementFactory_klass = NULL; | |
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68 klassOop Management::_garbageCollectorImpl_klass = NULL; |
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69 klassOop Management::_gcInfo_klass = NULL; |
0 | 70 |
71 jmmOptionalSupport Management::_optional_support = {0}; | |
72 TimeStamp Management::_stamp; | |
73 | |
74 void management_init() { | |
75 Management::init(); | |
76 ThreadService::init(); | |
77 RuntimeService::init(); | |
78 ClassLoadingService::init(); | |
79 } | |
80 | |
81 void Management::init() { | |
82 EXCEPTION_MARK; | |
83 | |
84 // These counters are for java.lang.management API support. | |
85 // They are created even if -XX:-UsePerfData is set and in | |
86 // that case, they will be allocated on C heap. | |
87 | |
88 _begin_vm_creation_time = | |
89 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
90 PerfData::U_None, CHECK); | |
91 | |
92 _end_vm_creation_time = | |
93 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
94 PerfData::U_None, CHECK); | |
95 | |
96 _vm_init_done_time = | |
97 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
98 PerfData::U_None, CHECK); | |
99 | |
100 // Initialize optional support | |
101 _optional_support.isLowMemoryDetectionSupported = 1; | |
102 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
103 _optional_support.isThreadContentionMonitoringSupported = 1; | |
104 | |
105 if (os::is_thread_cpu_time_supported()) { | |
106 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
107 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
108 } else { | |
109 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
110 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
111 } | |
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112 |
0 | 113 _optional_support.isBootClassPathSupported = 1; |
114 _optional_support.isObjectMonitorUsageSupported = 1; | |
115 #ifndef SERVICES_KERNEL | |
116 // This depends on the heap inspector | |
117 _optional_support.isSynchronizerUsageSupported = 1; | |
118 #endif // SERVICES_KERNEL | |
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119 _optional_support.isThreadAllocatedMemorySupported = 1; |
4133 | 120 |
4773 | 121 // Registration of the diagnostic commands |
122 // First boolean argument specifies if the command is enabled | |
123 // Second boolean argument specifies if the command is hidden | |
4133 | 124 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false)); |
125 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false)); | |
4773 | 126 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false)); |
127 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false)); | |
128 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false)); | |
129 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false)); | |
130 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false)); | |
131 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false)); | |
132 #ifndef SERVICES_KERNEL // Heap dumping not supported | |
133 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false)); | |
134 #endif // SERVICES_KERNEL | |
135 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false)); | |
136 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false)); | |
0 | 137 } |
138 | |
139 void Management::initialize(TRAPS) { | |
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140 // Start the service thread |
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141 ServiceThread::initialize(); |
0 | 142 |
143 if (ManagementServer) { | |
144 ResourceMark rm(THREAD); | |
145 HandleMark hm(THREAD); | |
146 | |
147 // Load and initialize the sun.management.Agent class | |
148 // invoke startAgent method to start the management server | |
149 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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150 klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 151 loader, |
152 Handle(), | |
153 true, | |
154 CHECK); | |
155 instanceKlassHandle ik (THREAD, k); | |
156 | |
157 JavaValue result(T_VOID); | |
158 JavaCalls::call_static(&result, | |
159 ik, | |
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160 vmSymbols::startAgent_name(), |
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161 vmSymbols::void_method_signature(), |
0 | 162 CHECK); |
163 } | |
164 } | |
165 | |
166 void Management::get_optional_support(jmmOptionalSupport* support) { | |
167 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
168 } | |
169 | |
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170 klassOop Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
0 | 171 klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
172 instanceKlassHandle ik (THREAD, k); | |
173 if (ik->should_be_initialized()) { | |
174 ik->initialize(CHECK_NULL); | |
175 } | |
176 return ik(); | |
177 } | |
178 | |
179 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
180 // if the performance counter is not initialized, | |
181 // then vm initialization failed; simply return. | |
182 if (_begin_vm_creation_time == NULL) return; | |
183 | |
184 _begin_vm_creation_time->set_value(begin); | |
185 _end_vm_creation_time->set_value(begin + duration); | |
186 PerfMemory::set_accessible(true); | |
187 } | |
188 | |
189 jlong Management::timestamp() { | |
190 TimeStamp t; | |
191 t.update(); | |
192 return t.ticks() - _stamp.ticks(); | |
193 } | |
194 | |
195 void Management::oops_do(OopClosure* f) { | |
196 MemoryService::oops_do(f); | |
197 ThreadService::oops_do(f); | |
198 | |
199 f->do_oop((oop*) &_sensor_klass); | |
200 f->do_oop((oop*) &_threadInfo_klass); | |
201 f->do_oop((oop*) &_memoryUsage_klass); | |
202 f->do_oop((oop*) &_memoryPoolMXBean_klass); | |
203 f->do_oop((oop*) &_memoryManagerMXBean_klass); | |
204 f->do_oop((oop*) &_garbageCollectorMXBean_klass); | |
205 f->do_oop((oop*) &_managementFactory_klass); | |
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206 f->do_oop((oop*) &_garbageCollectorImpl_klass); |
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207 f->do_oop((oop*) &_gcInfo_klass); |
0 | 208 } |
209 | |
210 klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { | |
211 if (_threadInfo_klass == NULL) { | |
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212 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 213 } |
214 return _threadInfo_klass; | |
215 } | |
216 | |
217 klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { | |
218 if (_memoryUsage_klass == NULL) { | |
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219 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 220 } |
221 return _memoryUsage_klass; | |
222 } | |
223 | |
224 klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { | |
225 if (_memoryPoolMXBean_klass == NULL) { | |
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226 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 227 } |
228 return _memoryPoolMXBean_klass; | |
229 } | |
230 | |
231 klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { | |
232 if (_memoryManagerMXBean_klass == NULL) { | |
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233 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 234 } |
235 return _memoryManagerMXBean_klass; | |
236 } | |
237 | |
238 klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { | |
239 if (_garbageCollectorMXBean_klass == NULL) { | |
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240 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 241 } |
242 return _garbageCollectorMXBean_klass; | |
243 } | |
244 | |
245 klassOop Management::sun_management_Sensor_klass(TRAPS) { | |
246 if (_sensor_klass == NULL) { | |
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247 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 248 } |
249 return _sensor_klass; | |
250 } | |
251 | |
252 klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { | |
253 if (_managementFactory_klass == NULL) { | |
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254 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 255 } |
256 return _managementFactory_klass; | |
257 } | |
258 | |
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259 klassOop Management::sun_management_GarbageCollectorImpl_klass(TRAPS) { |
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260 if (_garbageCollectorImpl_klass == NULL) { |
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261 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL); |
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262 } |
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263 return _garbageCollectorImpl_klass; |
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264 } |
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265 |
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266 klassOop Management::com_sun_management_GcInfo_klass(TRAPS) { |
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267 if (_gcInfo_klass == NULL) { |
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268 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); |
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269 } |
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270 return _gcInfo_klass; |
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271 } |
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272 |
0 | 273 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
274 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
275 | |
276 jlong contended_time; | |
277 jlong waited_time; | |
278 if (ThreadService::is_thread_monitoring_contention()) { | |
279 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
280 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
281 } else { | |
282 // set them to -1 if thread contention monitoring is disabled. | |
283 contended_time = max_julong; | |
284 waited_time = max_julong; | |
285 } | |
286 | |
287 int thread_status = snapshot->thread_status(); | |
288 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
289 if (snapshot->is_ext_suspended()) { | |
290 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
291 } | |
292 if (snapshot->is_in_native()) { | |
293 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
294 } | |
295 | |
296 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
297 Handle stacktrace_h; | |
298 if (st != NULL) { | |
299 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
300 } else { | |
301 stacktrace_h = Handle(); | |
302 } | |
303 | |
304 args->push_oop(snapshot_thread); | |
305 args->push_int(thread_status); | |
306 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
307 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
308 args->push_long(snapshot->contended_enter_count()); | |
309 args->push_long(contended_time); | |
310 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
311 args->push_long(waited_time); | |
312 args->push_oop(stacktrace_h); | |
313 } | |
314 | |
315 // Helper function to construct a ThreadInfo object | |
316 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
317 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
318 instanceKlassHandle ik (THREAD, k); | |
319 | |
320 JavaValue result(T_VOID); | |
321 JavaCallArguments args(14); | |
322 | |
323 // First allocate a ThreadObj object and | |
324 // push the receiver as the first argument | |
325 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
326 args.push_oop(element); | |
327 | |
328 // initialize the arguments for the ThreadInfo constructor | |
329 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
330 | |
331 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
332 JavaCalls::call_special(&result, | |
333 ik, | |
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334 vmSymbols::object_initializer_name(), |
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335 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 336 &args, |
337 CHECK_NULL); | |
338 | |
339 return (instanceOop) element(); | |
340 } | |
341 | |
342 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
343 objArrayHandle monitors_array, | |
344 typeArrayHandle depths_array, | |
345 objArrayHandle synchronizers_array, | |
346 TRAPS) { | |
347 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
348 instanceKlassHandle ik (THREAD, k); | |
349 | |
350 JavaValue result(T_VOID); | |
351 JavaCallArguments args(17); | |
352 | |
353 // First allocate a ThreadObj object and | |
354 // push the receiver as the first argument | |
355 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
356 args.push_oop(element); | |
357 | |
358 // initialize the arguments for the ThreadInfo constructor | |
359 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
360 | |
361 // push the locked monitors and synchronizers in the arguments | |
362 args.push_oop(monitors_array); | |
363 args.push_oop(depths_array); | |
364 args.push_oop(synchronizers_array); | |
365 | |
366 // Call ThreadInfo constructor with locked monitors and synchronizers | |
367 JavaCalls::call_special(&result, | |
368 ik, | |
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369 vmSymbols::object_initializer_name(), |
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370 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 371 &args, |
372 CHECK_NULL); | |
373 | |
374 return (instanceOop) element(); | |
375 } | |
376 | |
377 // Helper functions | |
378 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
379 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
380 | |
381 JavaThread* java_thread = NULL; | |
382 // Sequential search for now. Need to do better optimization later. | |
383 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
384 oop tobj = thread->threadObj(); | |
385 if (!thread->is_exiting() && | |
386 tobj != NULL && | |
387 thread_id == java_lang_Thread::thread_id(tobj)) { | |
388 java_thread = thread; | |
389 break; | |
390 } | |
391 } | |
392 return java_thread; | |
393 } | |
394 | |
395 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
396 if (mgr == NULL) { | |
397 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
398 } | |
399 oop mgr_obj = JNIHandles::resolve(mgr); | |
400 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
401 | |
402 klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); | |
403 if (!h->is_a(k)) { | |
404 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
405 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
406 NULL); | |
407 } | |
408 | |
409 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
410 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
411 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
412 "Invalid GC memory manager", | |
413 NULL); | |
414 } | |
415 return (GCMemoryManager*) gc; | |
416 } | |
417 | |
418 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
419 if (obj == NULL) { | |
420 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
421 } | |
422 | |
423 oop pool_obj = JNIHandles::resolve(obj); | |
424 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
425 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
426 | |
427 return MemoryService::get_memory_pool(ph); | |
428 } | |
429 | |
430 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
431 int num_threads = ids_ah->length(); | |
432 | |
433 // Validate input thread IDs | |
434 int i = 0; | |
435 for (i = 0; i < num_threads; i++) { | |
436 jlong tid = ids_ah->long_at(i); | |
437 if (tid <= 0) { | |
438 // throw exception if invalid thread id. | |
439 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
440 "Invalid thread ID entry"); | |
441 } | |
442 } | |
443 } | |
444 | |
445 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
446 // check if the element of infoArray is of type ThreadInfo class | |
447 klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); | |
448 klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); | |
449 if (element_klass != threadinfo_klass) { | |
450 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
451 "infoArray element type is not ThreadInfo class"); | |
452 } | |
453 } | |
454 | |
455 | |
456 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
457 if (obj == NULL) { | |
458 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
459 } | |
460 | |
461 oop mgr_obj = JNIHandles::resolve(obj); | |
462 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
463 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
464 | |
465 return MemoryService::get_memory_manager(mh); | |
466 } | |
467 | |
468 // Returns a version string and sets major and minor version if | |
469 // the input parameters are non-null. | |
470 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
471 return JMM_VERSION; | |
472 JVM_END | |
473 | |
474 // Gets the list of VM monitoring and management optional supports | |
475 // Returns 0 if succeeded; otherwise returns non-zero. | |
476 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
477 if (support == NULL) { | |
478 return -1; | |
479 } | |
480 Management::get_optional_support(support); | |
481 return 0; | |
482 JVM_END | |
483 | |
484 // Returns a java.lang.String object containing the input arguments to the VM. | |
485 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
486 ResourceMark rm(THREAD); | |
487 | |
488 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
489 return NULL; | |
490 } | |
491 | |
492 char** vm_flags = Arguments::jvm_flags_array(); | |
493 char** vm_args = Arguments::jvm_args_array(); | |
494 int num_flags = Arguments::num_jvm_flags(); | |
495 int num_args = Arguments::num_jvm_args(); | |
496 | |
497 size_t length = 1; // null terminator | |
498 int i; | |
499 for (i = 0; i < num_flags; i++) { | |
500 length += strlen(vm_flags[i]); | |
501 } | |
502 for (i = 0; i < num_args; i++) { | |
503 length += strlen(vm_args[i]); | |
504 } | |
505 // add a space between each argument | |
506 length += num_flags + num_args - 1; | |
507 | |
508 // Return the list of input arguments passed to the VM | |
509 // and preserve the order that the VM processes. | |
510 char* args = NEW_RESOURCE_ARRAY(char, length); | |
511 args[0] = '\0'; | |
512 // concatenate all jvm_flags | |
513 if (num_flags > 0) { | |
514 strcat(args, vm_flags[0]); | |
515 for (i = 1; i < num_flags; i++) { | |
516 strcat(args, " "); | |
517 strcat(args, vm_flags[i]); | |
518 } | |
519 } | |
520 | |
521 if (num_args > 0 && num_flags > 0) { | |
522 // append a space if args already contains one or more jvm_flags | |
523 strcat(args, " "); | |
524 } | |
525 | |
526 // concatenate all jvm_args | |
527 if (num_args > 0) { | |
528 strcat(args, vm_args[0]); | |
529 for (i = 1; i < num_args; i++) { | |
530 strcat(args, " "); | |
531 strcat(args, vm_args[i]); | |
532 } | |
533 } | |
534 | |
535 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
536 return JNIHandles::make_local(env, hargs()); | |
537 JVM_END | |
538 | |
539 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
540 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
541 ResourceMark rm(THREAD); | |
542 | |
543 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
544 return NULL; | |
545 } | |
546 | |
547 char** vm_flags = Arguments::jvm_flags_array(); | |
548 char** vm_args = Arguments::jvm_args_array(); | |
549 int num_flags = Arguments::num_jvm_flags(); | |
550 int num_args = Arguments::num_jvm_args(); | |
551 | |
1142 | 552 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 553 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
554 objArrayHandle result_h(THREAD, r); | |
555 | |
556 int index = 0; | |
557 for (int j = 0; j < num_flags; j++, index++) { | |
558 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
559 result_h->obj_at_put(index, h()); | |
560 } | |
561 for (int i = 0; i < num_args; i++, index++) { | |
562 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
563 result_h->obj_at_put(index, h()); | |
564 } | |
565 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
566 JVM_END | |
567 | |
568 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
569 // one for each memory pool if obj == null; otherwise returns | |
570 // an array of memory pools for a given memory manager if | |
571 // it is a valid memory manager. | |
572 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
573 ResourceMark rm(THREAD); | |
574 | |
575 int num_memory_pools; | |
576 MemoryManager* mgr = NULL; | |
577 if (obj == NULL) { | |
578 num_memory_pools = MemoryService::num_memory_pools(); | |
579 } else { | |
580 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
581 if (mgr == NULL) { | |
582 return NULL; | |
583 } | |
584 num_memory_pools = mgr->num_memory_pools(); | |
585 } | |
586 | |
587 // Allocate the resulting MemoryPoolMXBean[] object | |
588 klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); | |
589 instanceKlassHandle ik (THREAD, k); | |
590 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
591 objArrayHandle poolArray(THREAD, r); | |
592 | |
593 if (mgr == NULL) { | |
594 // Get all memory pools | |
595 for (int i = 0; i < num_memory_pools; i++) { | |
596 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
597 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
598 instanceHandle ph(THREAD, p); | |
599 poolArray->obj_at_put(i, ph()); | |
600 } | |
601 } else { | |
602 // Get memory pools managed by a given memory manager | |
603 for (int i = 0; i < num_memory_pools; i++) { | |
604 MemoryPool* pool = mgr->get_memory_pool(i); | |
605 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
606 instanceHandle ph(THREAD, p); | |
607 poolArray->obj_at_put(i, ph()); | |
608 } | |
609 } | |
610 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
611 JVM_END | |
612 | |
613 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
614 // one for each memory manager if obj == null; otherwise returns | |
615 // an array of memory managers for a given memory pool if | |
616 // it is a valid memory pool. | |
617 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
618 ResourceMark rm(THREAD); | |
619 | |
620 int num_mgrs; | |
621 MemoryPool* pool = NULL; | |
622 if (obj == NULL) { | |
623 num_mgrs = MemoryService::num_memory_managers(); | |
624 } else { | |
625 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
626 if (pool == NULL) { | |
627 return NULL; | |
628 } | |
629 num_mgrs = pool->num_memory_managers(); | |
630 } | |
631 | |
632 // Allocate the resulting MemoryManagerMXBean[] object | |
633 klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); | |
634 instanceKlassHandle ik (THREAD, k); | |
635 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
636 objArrayHandle mgrArray(THREAD, r); | |
637 | |
638 if (pool == NULL) { | |
639 // Get all memory managers | |
640 for (int i = 0; i < num_mgrs; i++) { | |
641 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
642 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
643 instanceHandle ph(THREAD, p); | |
644 mgrArray->obj_at_put(i, ph()); | |
645 } | |
646 } else { | |
647 // Get memory managers for a given memory pool | |
648 for (int i = 0; i < num_mgrs; i++) { | |
649 MemoryManager* mgr = pool->get_memory_manager(i); | |
650 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
651 instanceHandle ph(THREAD, p); | |
652 mgrArray->obj_at_put(i, ph()); | |
653 } | |
654 } | |
655 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
656 JVM_END | |
657 | |
658 | |
659 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
660 // of a given memory pool. | |
661 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(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_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. | |
676 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
677 ResourceMark rm(THREAD); | |
678 | |
679 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
680 if (pool != NULL) { | |
681 MemoryUsage usage = pool->get_peak_memory_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 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
690 // of a given memory pool after most recent GC. | |
691 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
692 ResourceMark rm(THREAD); | |
693 | |
694 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
695 if (pool != NULL && pool->is_collected_pool()) { | |
696 MemoryUsage usage = pool->get_last_collection_usage(); | |
697 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
698 return JNIHandles::make_local(env, h()); | |
699 } else { | |
700 return NULL; | |
701 } | |
702 JVM_END | |
703 | |
704 // Sets the memory pool sensor for a threshold type | |
705 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
706 if (obj == NULL || sensorObj == NULL) { | |
707 THROW(vmSymbols::java_lang_NullPointerException()); | |
708 } | |
709 | |
710 klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); | |
711 oop s = JNIHandles::resolve(sensorObj); | |
712 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
713 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
714 if (!sensor_h->is_a(sensor_klass)) { | |
715 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
716 "Sensor is not an instance of sun.management.Sensor class"); | |
717 } | |
718 | |
719 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
720 assert(mpool != NULL, "MemoryPool should exist"); | |
721 | |
722 switch (type) { | |
723 case JMM_USAGE_THRESHOLD_HIGH: | |
724 case JMM_USAGE_THRESHOLD_LOW: | |
725 // have only one sensor for threshold high and low | |
726 mpool->set_usage_sensor_obj(sensor_h); | |
727 break; | |
728 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
729 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
730 // have only one sensor for threshold high and low | |
731 mpool->set_gc_usage_sensor_obj(sensor_h); | |
732 break; | |
733 default: | |
734 assert(false, "Unrecognized type"); | |
735 } | |
736 | |
737 JVM_END | |
738 | |
739 | |
740 // Sets the threshold of a given memory pool. | |
741 // Returns the previous threshold. | |
742 // | |
743 // Input parameters: | |
744 // pool - the MemoryPoolMXBean object | |
745 // type - threshold type | |
746 // threshold - the new threshold (must not be negative) | |
747 // | |
748 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
749 if (threshold < 0) { | |
750 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
751 "Invalid threshold value", | |
752 -1); | |
753 } | |
754 | |
489
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755 if ((size_t)threshold > max_uintx) { |
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756 stringStream st; |
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757 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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758 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 759 } |
760 | |
761 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
762 assert(pool != NULL, "MemoryPool should exist"); | |
763 | |
764 jlong prev = 0; | |
765 switch (type) { | |
766 case JMM_USAGE_THRESHOLD_HIGH: | |
767 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
768 return -1; | |
769 } | |
770 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
771 break; | |
772 | |
773 case JMM_USAGE_THRESHOLD_LOW: | |
774 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
775 return -1; | |
776 } | |
777 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
778 break; | |
779 | |
780 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
781 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
782 return -1; | |
783 } | |
784 // return and the new threshold is effective for the next GC | |
785 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
786 | |
787 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
788 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
789 return -1; | |
790 } | |
791 // return and the new threshold is effective for the next GC | |
792 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
793 | |
794 default: | |
795 assert(false, "Unrecognized type"); | |
796 return -1; | |
797 } | |
798 | |
799 // When the threshold is changed, reevaluate if the low memory | |
800 // detection is enabled. | |
801 if (prev != threshold) { | |
802 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
803 LowMemoryDetector::detect_low_memory(pool); | |
804 } | |
805 return prev; | |
806 JVM_END | |
807 | |
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808 // Gets an array containing the amount of memory allocated on the Java |
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809 // heap for a set of threads (in bytes). Each element of the array is |
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810 // the amount of memory allocated for the thread ID specified in the |
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811 // corresponding entry in the given array of thread IDs; or -1 if the |
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812 // thread does not exist or has terminated. |
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813 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
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814 jlongArray sizeArray)) |
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815 // Check if threads is null |
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816 if (ids == NULL || sizeArray == NULL) { |
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817 THROW(vmSymbols::java_lang_NullPointerException()); |
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818 } |
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819 |
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820 ResourceMark rm(THREAD); |
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821 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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822 typeArrayHandle ids_ah(THREAD, ta); |
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823 |
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824 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
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825 typeArrayHandle sizeArray_h(THREAD, sa); |
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826 |
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827 // validate the thread id array |
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828 validate_thread_id_array(ids_ah, CHECK); |
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829 |
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830 // sizeArray must be of the same length as the given array of thread IDs |
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831 int num_threads = ids_ah->length(); |
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832 if (num_threads != sizeArray_h->length()) { |
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833 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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834 "The length of the given long array does not match the length of " |
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835 "the given array of thread IDs"); |
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836 } |
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837 |
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838 MutexLockerEx ml(Threads_lock); |
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839 for (int i = 0; i < num_threads; i++) { |
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840 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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841 if (java_thread != NULL) { |
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842 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
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843 } |
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844 } |
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845 JVM_END |
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846 |
0 | 847 // Returns a java/lang/management/MemoryUsage object representing |
848 // the memory usage for the heap or non-heap memory. | |
849 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
850 ResourceMark rm(THREAD); | |
851 | |
852 // Calculate the memory usage | |
853 size_t total_init = 0; | |
854 size_t total_used = 0; | |
855 size_t total_committed = 0; | |
856 size_t total_max = 0; | |
857 bool has_undefined_init_size = false; | |
858 bool has_undefined_max_size = false; | |
859 | |
860 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
861 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
862 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
863 MemoryUsage u = pool->get_memory_usage(); | |
864 total_used += u.used(); | |
865 total_committed += u.committed(); | |
866 | |
867 // if any one of the memory pool has undefined init_size or max_size, | |
868 // set it to -1 | |
869 if (u.init_size() == (size_t)-1) { | |
870 has_undefined_init_size = true; | |
871 } | |
872 if (!has_undefined_init_size) { | |
873 total_init += u.init_size(); | |
874 } | |
875 | |
876 if (u.max_size() == (size_t)-1) { | |
877 has_undefined_max_size = true; | |
878 } | |
879 if (!has_undefined_max_size) { | |
880 total_max += u.max_size(); | |
881 } | |
882 } | |
883 } | |
884 | |
1757
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885 // In our current implementation, we make sure that all non-heap |
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886 // pools have defined init and max sizes. Heap pools do not matter, |
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887 // as we never use total_init and total_max for them. |
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888 assert(heap || !has_undefined_init_size, "Undefined init size"); |
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889 assert(heap || !has_undefined_max_size, "Undefined max size"); |
0 | 890 |
1064 | 891 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 892 total_used, |
893 total_committed, | |
894 (heap ? Universe::heap()->max_capacity() : total_max)); | |
895 | |
896 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
897 return JNIHandles::make_local(env, obj()); | |
898 JVM_END | |
899 | |
900 // Returns the boolean value of a given attribute. | |
901 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
902 switch (att) { | |
903 case JMM_VERBOSE_GC: | |
904 return MemoryService::get_verbose(); | |
905 case JMM_VERBOSE_CLASS: | |
906 return ClassLoadingService::get_verbose(); | |
907 case JMM_THREAD_CONTENTION_MONITORING: | |
908 return ThreadService::is_thread_monitoring_contention(); | |
909 case JMM_THREAD_CPU_TIME: | |
910 return ThreadService::is_thread_cpu_time_enabled(); | |
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911 case JMM_THREAD_ALLOCATED_MEMORY: |
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912 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 913 default: |
914 assert(0, "Unrecognized attribute"); | |
915 return false; | |
916 } | |
917 JVM_END | |
918 | |
919 // Sets the given boolean attribute and returns the previous value. | |
920 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
921 switch (att) { | |
922 case JMM_VERBOSE_GC: | |
923 return MemoryService::set_verbose(flag != 0); | |
924 case JMM_VERBOSE_CLASS: | |
925 return ClassLoadingService::set_verbose(flag != 0); | |
926 case JMM_THREAD_CONTENTION_MONITORING: | |
927 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
928 case JMM_THREAD_CPU_TIME: | |
929 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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930 case JMM_THREAD_ALLOCATED_MEMORY: |
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931 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 932 default: |
933 assert(0, "Unrecognized attribute"); | |
934 return false; | |
935 } | |
936 JVM_END | |
937 | |
938 | |
939 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
940 switch (att) { | |
941 case JMM_GC_TIME_MS: | |
942 return mgr->gc_time_ms(); | |
943 | |
944 case JMM_GC_COUNT: | |
945 return mgr->gc_count(); | |
946 | |
947 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
948 // current implementation only has 1 ext attribute | |
949 return 1; | |
950 | |
951 default: | |
952 assert(0, "Unrecognized GC attribute"); | |
953 return -1; | |
954 } | |
955 } | |
956 | |
957 class VmThreadCountClosure: public ThreadClosure { | |
958 private: | |
959 int _count; | |
960 public: | |
961 VmThreadCountClosure() : _count(0) {}; | |
962 void do_thread(Thread* thread); | |
963 int count() { return _count; } | |
964 }; | |
965 | |
966 void VmThreadCountClosure::do_thread(Thread* thread) { | |
967 // exclude externally visible JavaThreads | |
968 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
969 return; | |
970 } | |
971 | |
972 _count++; | |
973 } | |
974 | |
975 static jint get_vm_thread_count() { | |
976 VmThreadCountClosure vmtcc; | |
977 { | |
978 MutexLockerEx ml(Threads_lock); | |
979 Threads::threads_do(&vmtcc); | |
980 } | |
981 | |
982 return vmtcc.count(); | |
983 } | |
984 | |
985 static jint get_num_flags() { | |
986 // last flag entry is always NULL, so subtract 1 | |
987 int nFlags = (int) Flag::numFlags - 1; | |
988 int count = 0; | |
989 for (int i = 0; i < nFlags; i++) { | |
990 Flag* flag = &Flag::flags[i]; | |
350 | 991 // Exclude the locked (diagnostic, experimental) flags |
0 | 992 if (flag->is_unlocked() || flag->is_unlocker()) { |
993 count++; | |
994 } | |
995 } | |
996 return count; | |
997 } | |
998 | |
999 static jlong get_long_attribute(jmmLongAttribute att) { | |
1000 switch (att) { | |
1001 case JMM_CLASS_LOADED_COUNT: | |
1002 return ClassLoadingService::loaded_class_count(); | |
1003 | |
1004 case JMM_CLASS_UNLOADED_COUNT: | |
1005 return ClassLoadingService::unloaded_class_count(); | |
1006 | |
1007 case JMM_THREAD_TOTAL_COUNT: | |
1008 return ThreadService::get_total_thread_count(); | |
1009 | |
1010 case JMM_THREAD_LIVE_COUNT: | |
1011 return ThreadService::get_live_thread_count(); | |
1012 | |
1013 case JMM_THREAD_PEAK_COUNT: | |
1014 return ThreadService::get_peak_thread_count(); | |
1015 | |
1016 case JMM_THREAD_DAEMON_COUNT: | |
1017 return ThreadService::get_daemon_thread_count(); | |
1018 | |
1019 case JMM_JVM_INIT_DONE_TIME_MS: | |
1020 return Management::vm_init_done_time(); | |
1021 | |
1022 case JMM_COMPILE_TOTAL_TIME_MS: | |
1023 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
1024 | |
1025 case JMM_OS_PROCESS_ID: | |
1026 return os::current_process_id(); | |
1027 | |
1028 // Hotspot-specific counters | |
1029 case JMM_CLASS_LOADED_BYTES: | |
1030 return ClassLoadingService::loaded_class_bytes(); | |
1031 | |
1032 case JMM_CLASS_UNLOADED_BYTES: | |
1033 return ClassLoadingService::unloaded_class_bytes(); | |
1034 | |
1035 case JMM_SHARED_CLASS_LOADED_COUNT: | |
1036 return ClassLoadingService::loaded_shared_class_count(); | |
1037 | |
1038 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
1039 return ClassLoadingService::unloaded_shared_class_count(); | |
1040 | |
1041 | |
1042 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1043 return ClassLoadingService::loaded_shared_class_bytes(); | |
1044 | |
1045 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1046 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1047 | |
1048 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1049 return ClassLoader::classloader_time_ms(); | |
1050 | |
1051 case JMM_VM_GLOBAL_COUNT: | |
1052 return get_num_flags(); | |
1053 | |
1054 case JMM_SAFEPOINT_COUNT: | |
1055 return RuntimeService::safepoint_count(); | |
1056 | |
1057 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1058 return RuntimeService::safepoint_sync_time_ms(); | |
1059 | |
1060 case JMM_TOTAL_STOPPED_TIME_MS: | |
1061 return RuntimeService::safepoint_time_ms(); | |
1062 | |
1063 case JMM_TOTAL_APP_TIME_MS: | |
1064 return RuntimeService::application_time_ms(); | |
1065 | |
1066 case JMM_VM_THREAD_COUNT: | |
1067 return get_vm_thread_count(); | |
1068 | |
1069 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1070 return ClassLoader::class_init_count(); | |
1071 | |
1072 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1073 return ClassLoader::class_init_time_ms(); | |
1074 | |
1075 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1076 return ClassLoader::class_verify_time_ms(); | |
1077 | |
1078 case JMM_METHOD_DATA_SIZE_BYTES: | |
1079 return ClassLoadingService::class_method_data_size(); | |
1080 | |
1081 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1082 return os::physical_memory(); | |
1083 | |
1084 default: | |
1085 return -1; | |
1086 } | |
1087 } | |
1088 | |
1089 | |
1090 // Returns the long value of a given attribute. | |
1091 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1092 if (obj == NULL) { | |
1093 return get_long_attribute(att); | |
1094 } else { | |
1095 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1096 if (mgr != NULL) { | |
1097 return get_gc_attribute(mgr, att); | |
1098 } | |
1099 } | |
1100 return -1; | |
1101 JVM_END | |
1102 | |
1103 // Gets the value of all attributes specified in the given array | |
1104 // and sets the value in the result array. | |
1105 // Returns the number of attributes found. | |
1106 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1107 jobject obj, | |
1108 jmmLongAttribute* atts, | |
1109 jint count, | |
1110 jlong* result)) | |
1111 | |
1112 int num_atts = 0; | |
1113 if (obj == NULL) { | |
1114 for (int i = 0; i < count; i++) { | |
1115 result[i] = get_long_attribute(atts[i]); | |
1116 if (result[i] != -1) { | |
1117 num_atts++; | |
1118 } | |
1119 } | |
1120 } else { | |
1121 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1122 for (int i = 0; i < count; i++) { | |
1123 result[i] = get_gc_attribute(mgr, atts[i]); | |
1124 if (result[i] != -1) { | |
1125 num_atts++; | |
1126 } | |
1127 } | |
1128 } | |
1129 return num_atts; | |
1130 JVM_END | |
1131 | |
1132 // Helper function to do thread dump for a specific list of threads | |
1133 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1134 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1135 int num_threads, | |
1136 int max_depth, | |
1137 bool with_locked_monitors, | |
1138 bool with_locked_synchronizers, | |
1139 TRAPS) { | |
1140 | |
1141 // First get an array of threadObj handles. | |
1142 // A JavaThread may terminate before we get the stack trace. | |
1143 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1144 { | |
1145 MutexLockerEx ml(Threads_lock); | |
1146 for (int i = 0; i < num_threads; i++) { | |
1147 jlong tid = ids_ah->long_at(i); | |
1148 JavaThread* jt = find_java_thread_from_id(tid); | |
1149 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
1150 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1151 thread_handle_array->append(threadObj_h); | |
1152 } | |
1153 } | |
1154 | |
1155 // Obtain thread dumps and thread snapshot information | |
1156 VM_ThreadDump op(dump_result, | |
1157 thread_handle_array, | |
1158 num_threads, | |
1159 max_depth, /* stack depth */ | |
1160 with_locked_monitors, | |
1161 with_locked_synchronizers); | |
1162 VMThread::execute(&op); | |
1163 } | |
1164 | |
1165 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1166 // for the thread ID specified in the corresponding entry in | |
1167 // the given array of thread IDs; or NULL if the thread does not exist | |
1168 // or has terminated. | |
1169 // | |
1170 // Input parameters: | |
1171 // ids - array of thread IDs | |
1172 // maxDepth - the maximum depth of stack traces to be dumped: | |
1173 // maxDepth == -1 requests to dump entire stack trace. | |
1174 // maxDepth == 0 requests no stack trace. | |
1175 // infoArray - array of ThreadInfo objects | |
1176 // | |
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1177 // QQQ - Why does this method return a value instead of void? |
0 | 1178 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1179 // Check if threads is null | |
1180 if (ids == NULL || infoArray == NULL) { | |
1181 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1182 } | |
1183 | |
1184 if (maxDepth < -1) { | |
1185 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1186 "Invalid maxDepth", -1); | |
1187 } | |
1188 | |
1189 ResourceMark rm(THREAD); | |
1190 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1191 typeArrayHandle ids_ah(THREAD, ta); | |
1192 | |
1193 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1194 objArrayOop oa = objArrayOop(infoArray_obj); | |
1195 objArrayHandle infoArray_h(THREAD, oa); | |
1196 | |
1197 // validate the thread id array | |
1198 validate_thread_id_array(ids_ah, CHECK_0); | |
1199 | |
1200 // validate the ThreadInfo[] parameters | |
1201 validate_thread_info_array(infoArray_h, CHECK_0); | |
1202 | |
1203 // infoArray must be of the same length as the given array of thread IDs | |
1204 int num_threads = ids_ah->length(); | |
1205 if (num_threads != infoArray_h->length()) { | |
1206 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1207 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1208 } | |
1209 | |
1210 if (JDK_Version::is_gte_jdk16x_version()) { | |
1211 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1212 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1213 } | |
1214 | |
1215 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1216 // GC may occur after the thread snapshots are taken but before | |
1217 // this function returns. The threadObj and other oops kept | |
1218 // in the ThreadSnapshot are marked and adjusted during GC. | |
1219 ThreadDumpResult dump_result(num_threads); | |
1220 | |
1221 if (maxDepth == 0) { | |
1222 // no stack trace dumped - do not need to stop the world | |
1223 { | |
1224 MutexLockerEx ml(Threads_lock); | |
1225 for (int i = 0; i < num_threads; i++) { | |
1226 jlong tid = ids_ah->long_at(i); | |
1227 JavaThread* jt = find_java_thread_from_id(tid); | |
1228 ThreadSnapshot* ts; | |
1229 if (jt == NULL) { | |
1230 // if the thread does not exist or now it is terminated, | |
1231 // create dummy snapshot | |
1232 ts = new ThreadSnapshot(); | |
1233 } else { | |
1234 ts = new ThreadSnapshot(jt); | |
1235 } | |
1236 dump_result.add_thread_snapshot(ts); | |
1237 } | |
1238 } | |
1239 } else { | |
1240 // obtain thread dump with the specific list of threads with stack trace | |
1241 do_thread_dump(&dump_result, | |
1242 ids_ah, | |
1243 num_threads, | |
1244 maxDepth, | |
1245 false, /* no locked monitor */ | |
1246 false, /* no locked synchronizers */ | |
1247 CHECK_0); | |
1248 } | |
1249 | |
1250 int num_snapshots = dump_result.num_snapshots(); | |
1251 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1252 int index = 0; | |
1253 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1254 // For each thread, create an java/lang/management/ThreadInfo object | |
1255 // and fill with the thread information | |
1256 | |
1257 if (ts->threadObj() == NULL) { | |
1258 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1259 infoArray_h->obj_at_put(index, NULL); | |
1260 continue; | |
1261 } | |
1262 | |
1263 // Create java.lang.management.ThreadInfo object | |
1264 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1265 infoArray_h->obj_at_put(index, info_obj); | |
1266 } | |
1267 return 0; | |
1268 JVM_END | |
1269 | |
1270 // Dump thread info for the specified threads. | |
1271 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1272 // for the thread ID specified in the corresponding entry in | |
1273 // the given array of thread IDs; or NULL if the thread does not exist | |
1274 // or has terminated. | |
1275 // | |
1276 // Input parameter: | |
1277 // ids - array of thread IDs; NULL indicates all live threads | |
1278 // locked_monitors - if true, dump locked object monitors | |
1279 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1280 // | |
1281 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1282 ResourceMark rm(THREAD); | |
1283 | |
1284 if (JDK_Version::is_gte_jdk16x_version()) { | |
1285 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1286 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1287 } | |
1288 | |
1289 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1290 int num_threads = (ta != NULL ? ta->length() : 0); | |
1291 typeArrayHandle ids_ah(THREAD, ta); | |
1292 | |
1293 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1294 | |
1295 if (ids_ah() != NULL) { | |
1296 | |
1297 // validate the thread id array | |
1298 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1299 | |
1300 // obtain thread dump of a specific list of threads | |
1301 do_thread_dump(&dump_result, | |
1302 ids_ah, | |
1303 num_threads, | |
1304 -1, /* entire stack */ | |
1305 (locked_monitors ? true : false), /* with locked monitors */ | |
1306 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1307 CHECK_NULL); | |
1308 } else { | |
1309 // obtain thread dump of all threads | |
1310 VM_ThreadDump op(&dump_result, | |
1311 -1, /* entire stack */ | |
1312 (locked_monitors ? true : false), /* with locked monitors */ | |
1313 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1314 VMThread::execute(&op); | |
1315 } | |
1316 | |
1317 int num_snapshots = dump_result.num_snapshots(); | |
1318 | |
1319 // create the result ThreadInfo[] object | |
1320 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
1321 instanceKlassHandle ik (THREAD, k); | |
1322 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1323 objArrayHandle result_h(THREAD, r); | |
1324 | |
1325 int index = 0; | |
1326 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1327 if (ts->threadObj() == NULL) { | |
1328 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1329 result_h->obj_at_put(index, NULL); | |
1330 continue; | |
1331 } | |
1332 | |
1333 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1334 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1335 | |
1336 // Create Object[] filled with locked monitors | |
1337 // Create int[] filled with the stack depth where a monitor was locked | |
1338 int num_frames = stacktrace->get_stack_depth(); | |
1339 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1340 | |
1341 // Count the total number of locked monitors | |
1342 for (int i = 0; i < num_frames; i++) { | |
1343 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1344 num_locked_monitors += frame->num_locked_monitors(); | |
1345 } | |
1346 | |
1347 objArrayHandle monitors_array; | |
1348 typeArrayHandle depths_array; | |
1349 objArrayHandle synchronizers_array; | |
1350 | |
1351 if (locked_monitors) { | |
1352 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1353 // where the thread locked it | |
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1354 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
0 | 1355 objArrayHandle mh(THREAD, array); |
1356 monitors_array = mh; | |
1357 | |
1358 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1359 typeArrayHandle dh(THREAD, tarray); | |
1360 depths_array = dh; | |
1361 | |
1362 int count = 0; | |
1363 int j = 0; | |
1364 for (int depth = 0; depth < num_frames; depth++) { | |
1365 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1366 int len = frame->num_locked_monitors(); | |
1367 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1368 for (j = 0; j < len; j++) { | |
1369 oop monitor = locked_monitors->at(j); | |
1370 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1371 monitors_array->obj_at_put(count, monitor); | |
1372 depths_array->int_at_put(count, depth); | |
1373 count++; | |
1374 } | |
1375 } | |
1376 | |
1377 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1378 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1379 oop object = jni_locked_monitors->at(j); | |
1380 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1381 monitors_array->obj_at_put(count, object); | |
1382 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1383 depths_array->int_at_put(count, -1); | |
1384 count++; | |
1385 } | |
1386 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1387 } | |
1388 | |
1389 if (locked_synchronizers) { | |
1390 // Create Object[] filled with locked JSR-166 synchronizers | |
1391 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1392 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1393 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1394 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1395 | |
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1396 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
0 | 1397 objArrayHandle sh(THREAD, array); |
1398 synchronizers_array = sh; | |
1399 | |
1400 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1401 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1402 } | |
1403 } | |
1404 | |
1405 // Create java.lang.management.ThreadInfo object | |
1406 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1407 monitors_array, | |
1408 depths_array, | |
1409 synchronizers_array, | |
1410 CHECK_NULL); | |
1411 result_h->obj_at_put(index, info_obj); | |
1412 } | |
1413 | |
1414 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1415 JVM_END | |
1416 | |
1417 // Returns an array of Class objects. | |
1418 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1419 ResourceMark rm(THREAD); | |
1420 | |
1421 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1422 | |
1423 int num_classes = lce.num_loaded_classes(); | |
1142 | 1424 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1425 objArrayHandle classes_ah(THREAD, r); |
1426 | |
1427 for (int i = 0; i < num_classes; i++) { | |
1428 KlassHandle kh = lce.get_klass(i); | |
1429 oop mirror = Klass::cast(kh())->java_mirror(); | |
1430 classes_ah->obj_at_put(i, mirror); | |
1431 } | |
1432 | |
1433 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1434 JVM_END | |
1435 | |
1436 // Reset statistic. Return true if the requested statistic is reset. | |
1437 // Otherwise, return false. | |
1438 // | |
1439 // Input parameters: | |
1440 // obj - specify which instance the statistic associated with to be reset | |
1441 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1442 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1443 // type - the type of statistic to be reset | |
1444 // | |
1445 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1446 ResourceMark rm(THREAD); | |
1447 | |
1448 switch (type) { | |
1449 case JMM_STAT_PEAK_THREAD_COUNT: | |
1450 ThreadService::reset_peak_thread_count(); | |
1451 return true; | |
1452 | |
1453 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1454 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1455 jlong tid = obj.j; | |
1456 if (tid < 0) { | |
1457 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1458 } | |
1459 | |
1460 // Look for the JavaThread of this given tid | |
1461 MutexLockerEx ml(Threads_lock); | |
1462 if (tid == 0) { | |
1463 // reset contention statistics for all threads if tid == 0 | |
1464 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1465 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1466 ThreadService::reset_contention_count_stat(java_thread); | |
1467 } else { | |
1468 ThreadService::reset_contention_time_stat(java_thread); | |
1469 } | |
1470 } | |
1471 } else { | |
1472 // reset contention statistics for a given thread | |
1473 JavaThread* java_thread = find_java_thread_from_id(tid); | |
1474 if (java_thread == NULL) { | |
1475 return false; | |
1476 } | |
1477 | |
1478 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1479 ThreadService::reset_contention_count_stat(java_thread); | |
1480 } else { | |
1481 ThreadService::reset_contention_time_stat(java_thread); | |
1482 } | |
1483 } | |
1484 return true; | |
1485 break; | |
1486 } | |
1487 case JMM_STAT_PEAK_POOL_USAGE: { | |
1488 jobject o = obj.l; | |
1489 if (o == NULL) { | |
1490 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1491 } | |
1492 | |
1493 oop pool_obj = JNIHandles::resolve(o); | |
1494 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1495 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1496 | |
1497 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1498 if (pool != NULL) { | |
1499 pool->reset_peak_memory_usage(); | |
1500 return true; | |
1501 } | |
1502 break; | |
1503 } | |
1504 case JMM_STAT_GC_STAT: { | |
1505 jobject o = obj.l; | |
1506 if (o == NULL) { | |
1507 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1508 } | |
1509 | |
1510 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1511 if (mgr != NULL) { | |
1512 mgr->reset_gc_stat(); | |
1513 return true; | |
1514 } | |
1515 break; | |
1516 } | |
1517 default: | |
1518 assert(0, "Unknown Statistic Type"); | |
1519 } | |
1520 return false; | |
1521 JVM_END | |
1522 | |
1523 // Returns the fast estimate of CPU time consumed by | |
1524 // a given thread (in nanoseconds). | |
1525 // If thread_id == 0, return CPU time for the current thread. | |
1526 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1527 if (!os::is_thread_cpu_time_supported()) { | |
1528 return -1; | |
1529 } | |
1530 | |
1531 if (thread_id < 0) { | |
1532 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1533 "Invalid thread ID", -1); | |
1534 } | |
1535 | |
1536 JavaThread* java_thread = NULL; | |
1537 if (thread_id == 0) { | |
1538 // current thread | |
1539 return os::current_thread_cpu_time(); | |
1540 } else { | |
1541 MutexLockerEx ml(Threads_lock); | |
1542 java_thread = find_java_thread_from_id(thread_id); | |
1543 if (java_thread != NULL) { | |
1544 return os::thread_cpu_time((Thread*) java_thread); | |
1545 } | |
1546 } | |
1547 return -1; | |
1548 JVM_END | |
1549 | |
1550 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
1551 // If thread_id == 0, CPU time for the current thread is returned. | |
1552 // If user_sys_cpu_time = true, user level and system CPU time of | |
1553 // a given thread is returned; otherwise, only user level CPU time | |
1554 // is returned. | |
1555 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
1556 if (!os::is_thread_cpu_time_supported()) { | |
1557 return -1; | |
1558 } | |
1559 | |
1560 if (thread_id < 0) { | |
1561 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1562 "Invalid thread ID", -1); | |
1563 } | |
1564 | |
1565 JavaThread* java_thread = NULL; | |
1566 if (thread_id == 0) { | |
1567 // current thread | |
1568 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
1569 } else { | |
1570 MutexLockerEx ml(Threads_lock); | |
1571 java_thread = find_java_thread_from_id(thread_id); | |
1572 if (java_thread != NULL) { | |
1573 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
1574 } | |
1575 } | |
1576 return -1; | |
1577 JVM_END | |
1578 | |
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1579 // Gets an array containing the CPU times consumed by a set of threads |
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1580 // (in nanoseconds). Each element of the array is the CPU time for the |
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1581 // thread ID specified in the corresponding entry in the given array |
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1582 // of thread IDs; or -1 if the thread does not exist or has terminated. |
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1583 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
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1584 // for the given thread is returned; otherwise, only user level CPU time |
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1585 // is returned. |
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1586 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
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1587 jlongArray timeArray, |
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1588 jboolean user_sys_cpu_time)) |
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1589 // Check if threads is null |
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1590 if (ids == NULL || timeArray == NULL) { |
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1591 THROW(vmSymbols::java_lang_NullPointerException()); |
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1592 } |
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1593 |
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1594 ResourceMark rm(THREAD); |
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1595 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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1596 typeArrayHandle ids_ah(THREAD, ta); |
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1597 |
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1598 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
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1599 typeArrayHandle timeArray_h(THREAD, tia); |
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1600 |
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1601 // validate the thread id array |
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1602 validate_thread_id_array(ids_ah, CHECK); |
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1603 |
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1604 // timeArray must be of the same length as the given array of thread IDs |
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1605 int num_threads = ids_ah->length(); |
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1606 if (num_threads != timeArray_h->length()) { |
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1607 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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1608 "The length of the given long array does not match the length of " |
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1609 "the given array of thread IDs"); |
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1610 } |
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1611 |
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1612 MutexLockerEx ml(Threads_lock); |
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1613 for (int i = 0; i < num_threads; i++) { |
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1614 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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1615 if (java_thread != NULL) { |
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1616 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
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1617 user_sys_cpu_time != 0)); |
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1618 } |
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1619 } |
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1620 JVM_END |
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1621 |
0 | 1622 // Returns a String array of all VM global flag names |
1623 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1624 // last flag entry is always NULL, so subtract 1 | |
1625 int nFlags = (int) Flag::numFlags - 1; | |
1626 // allocate a temp array | |
1142 | 1627 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1628 nFlags, CHECK_0); |
1629 objArrayHandle flags_ah(THREAD, r); | |
1630 int num_entries = 0; | |
1631 for (int i = 0; i < nFlags; i++) { | |
1632 Flag* flag = &Flag::flags[i]; | |
350 | 1633 // Exclude the locked (experimental, diagnostic) flags |
0 | 1634 if (flag->is_unlocked() || flag->is_unlocker()) { |
1635 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
1636 flags_ah->obj_at_put(num_entries, s()); | |
1637 num_entries++; | |
1638 } | |
1639 } | |
1640 | |
1641 if (num_entries < nFlags) { | |
1642 // Return array of right length | |
1142 | 1643 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1644 for(int i = 0; i < num_entries; i++) { |
1645 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1646 } | |
1647 return (jobjectArray)JNIHandles::make_local(env, res); | |
1648 } | |
1649 | |
1650 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1651 JVM_END | |
1652 | |
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1653 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1654 // can't be determined, true otherwise. If false is returned, then *global |
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1655 // will be incomplete and invalid. |
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1656 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1657 Handle flag_name; |
1658 if (name() == NULL) { | |
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1659 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
0 | 1660 } else { |
1661 flag_name = name; | |
1662 } | |
1663 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1664 | |
1665 if (flag->is_bool()) { | |
1666 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1667 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1668 } else if (flag->is_intx()) { | |
1669 global->value.j = (jlong)flag->get_intx(); | |
1670 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1671 } else if (flag->is_uintx()) { | |
1672 global->value.j = (jlong)flag->get_uintx(); | |
1673 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1674 } else if (flag->is_uint64_t()) { |
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1675 global->value.j = (jlong)flag->get_uint64_t(); |
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1676 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1677 } else if (flag->is_ccstr()) { |
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1678 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1679 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1680 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1681 } else { |
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1682 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1683 return false; |
0 | 1684 } |
1685 | |
1686 global->writeable = flag->is_writeable(); | |
1687 global->external = flag->is_external(); | |
1688 switch (flag->origin) { | |
1689 case DEFAULT: | |
1690 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
1691 break; | |
1692 case COMMAND_LINE: | |
1693 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
1694 break; | |
1695 case ENVIRON_VAR: | |
1696 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
1697 break; | |
1698 case CONFIG_FILE: | |
1699 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
1700 break; | |
1701 case MANAGEMENT: | |
1702 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
1703 break; | |
1704 case ERGONOMIC: | |
1705 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
1706 break; | |
1707 default: | |
1708 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1709 } | |
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1710 |
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1711 return true; |
0 | 1712 } |
1713 | |
1714 // Fill globals array of count length with jmmVMGlobal entries | |
1715 // specified by names. If names == NULL, fill globals array | |
1716 // with all Flags. Return value is number of entries | |
1717 // created in globals. | |
1718 // If a Flag with a given name in an array element does not | |
1719 // exist, globals[i].name will be set to NULL. | |
1720 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1721 jobjectArray names, | |
1722 jmmVMGlobal *globals, | |
1723 jint count)) | |
1724 | |
1725 | |
1726 if (globals == NULL) { | |
1727 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1728 } | |
1729 | |
1730 ResourceMark rm(THREAD); | |
1731 | |
1732 if (names != NULL) { | |
1733 // return the requested globals | |
1734 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1735 objArrayHandle names_ah(THREAD, ta); | |
1736 // Make sure we have a String array | |
1737 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1738 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1739 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1740 "Array element type is not String class", 0); | |
1741 } | |
1742 | |
1743 int names_length = names_ah->length(); | |
1744 int num_entries = 0; | |
1745 for (int i = 0; i < names_length && i < count; i++) { | |
1746 oop s = names_ah->obj_at(i); | |
1747 if (s == NULL) { | |
1748 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1749 } | |
1750 | |
1751 Handle sh(THREAD, s); | |
1752 char* str = java_lang_String::as_utf8_string(s); | |
1753 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1754 if (flag != NULL && |
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1755 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1756 num_entries++; |
1757 } else { | |
1758 globals[i].name = NULL; | |
1759 } | |
1760 } | |
1761 return num_entries; | |
1762 } else { | |
1763 // return all globals if names == NULL | |
1764 | |
1765 // last flag entry is always NULL, so subtract 1 | |
1766 int nFlags = (int) Flag::numFlags - 1; | |
1767 Handle null_h; | |
1768 int num_entries = 0; | |
1769 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1770 Flag* flag = &Flag::flags[i]; | |
350 | 1771 // Exclude the locked (diagnostic, experimental) flags |
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1772 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1773 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1774 num_entries++; |
1775 } | |
1776 } | |
1777 return num_entries; | |
1778 } | |
1779 JVM_END | |
1780 | |
1781 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1782 ResourceMark rm(THREAD); | |
1783 | |
1784 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1785 if (fn == NULL) { | |
1786 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1787 "The flag name cannot be null."); | |
1788 } | |
1789 char* name = java_lang_String::as_utf8_string(fn); | |
1790 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1791 if (flag == NULL) { | |
1792 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1793 "Flag does not exist."); | |
1794 } | |
1795 if (!flag->is_writeable()) { | |
1796 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1797 "This flag is not writeable."); | |
1798 } | |
1799 | |
1800 bool succeed; | |
1801 if (flag->is_bool()) { | |
1802 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
1803 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
1804 } else if (flag->is_intx()) { | |
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1805 intx ivalue = (intx)new_value.j; |
0 | 1806 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
1807 } else if (flag->is_uintx()) { | |
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1808 uintx uvalue = (uintx)new_value.j; |
0 | 1809 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1810 } else if (flag->is_uint64_t()) { |
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1811 uint64_t uvalue = (uint64_t)new_value.j; |
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1812 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
0 | 1813 } else if (flag->is_ccstr()) { |
1814 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1815 if (str == NULL) { | |
1816 THROW(vmSymbols::java_lang_NullPointerException()); | |
1817 } | |
1818 ccstr svalue = java_lang_String::as_utf8_string(str); | |
1819 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
1820 } | |
1821 assert(succeed, "Setting flag should succeed"); | |
1822 JVM_END | |
1823 | |
1824 class ThreadTimesClosure: public ThreadClosure { | |
1825 private: | |
1826 objArrayOop _names; | |
1827 typeArrayOop _times; | |
1828 int _names_len; | |
1829 int _times_len; | |
1830 int _count; | |
1831 | |
1832 public: | |
1833 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
1834 virtual void do_thread(Thread* thread); | |
1835 int count() { return _count; } | |
1836 }; | |
1837 | |
1838 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
1839 typeArrayOop times) { | |
1840 assert(names != NULL, "names was NULL"); | |
1841 assert(times != NULL, "times was NULL"); | |
1842 _names = names; | |
1843 _names_len = names->length(); | |
1844 _times = times; | |
1845 _times_len = times->length(); | |
1846 _count = 0; | |
1847 } | |
1848 | |
1849 void ThreadTimesClosure::do_thread(Thread* thread) { | |
1850 Handle s; | |
1851 assert(thread != NULL, "thread was NULL"); | |
1852 | |
1853 // exclude externally visible JavaThreads | |
1854 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1855 return; | |
1856 } | |
1857 | |
1858 if (_count >= _names_len || _count >= _times_len) { | |
1859 // skip if the result array is not big enough | |
1860 return; | |
1861 } | |
1862 | |
1863 EXCEPTION_MARK; | |
1864 | |
1865 assert(thread->name() != NULL, "All threads should have a name"); | |
1866 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
1867 _names->obj_at_put(_count, s()); | |
1868 | |
1869 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
1870 os::thread_cpu_time(thread) : -1); | |
1871 _count++; | |
1872 } | |
1873 | |
1874 // Fills names with VM internal thread names and times with the corresponding | |
1875 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1876 // If the element type of names is not String, an IllegalArgumentException is | |
1877 // thrown. | |
1878 // If an array is not large enough to hold all the entries, only the entries | |
1879 // that fit will be returned. Return value is the number of VM internal | |
1880 // threads entries. | |
1881 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1882 jobjectArray names, | |
1883 jlongArray times)) | |
1884 if (names == NULL || times == NULL) { | |
1885 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1886 } | |
1887 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1888 objArrayHandle names_ah(THREAD, na); | |
1889 | |
1890 // Make sure we have a String array | |
1891 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1892 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1893 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1894 "Array element type is not String class", 0); | |
1895 } | |
1896 | |
1897 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1898 typeArrayHandle times_ah(THREAD, ta); | |
1899 | |
1900 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
1901 { | |
1902 MutexLockerEx ml(Threads_lock); | |
1903 Threads::threads_do(&ttc); | |
1904 } | |
1905 | |
1906 return ttc.count(); | |
1907 JVM_END | |
1908 | |
1909 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1910 ResourceMark rm(THREAD); | |
1911 | |
1912 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1913 VMThread::execute(&op); | |
1914 | |
1915 DeadlockCycle* deadlocks = op.result(); | |
1916 if (deadlocks == NULL) { | |
1917 // no deadlock found and return | |
1918 return Handle(); | |
1919 } | |
1920 | |
1921 int num_threads = 0; | |
1922 DeadlockCycle* cycle; | |
1923 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1924 num_threads += cycle->num_threads(); | |
1925 } | |
1926 | |
1142 | 1927 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1928 objArrayHandle threads_ah(THREAD, r); |
1929 | |
1930 int index = 0; | |
1931 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1932 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1933 int len = deadlock_threads->length(); | |
1934 for (int i = 0; i < len; i++) { | |
1935 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1936 index++; | |
1937 } | |
1938 } | |
1939 return threads_ah; | |
1940 } | |
1941 | |
1942 // Finds cycles of threads that are deadlocked involved in object monitors | |
1943 // and JSR-166 synchronizers. | |
1944 // Returns an array of Thread objects which are in deadlock, if any. | |
1945 // Otherwise, returns NULL. | |
1946 // | |
1947 // Input parameter: | |
1948 // object_monitors_only - if true, only check object monitors | |
1949 // | |
1950 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1951 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1952 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1953 JVM_END | |
1954 | |
1955 // Finds cycles of threads that are deadlocked on monitor locks | |
1956 // Returns an array of Thread objects which are in deadlock, if any. | |
1957 // Otherwise, returns NULL. | |
1958 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1959 Handle result = find_deadlocks(true, CHECK_0); | |
1960 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1961 JVM_END | |
1962 | |
1963 // Gets the information about GC extension attributes including | |
1964 // the name of the attribute, its type, and a short description. | |
1965 // | |
1966 // Input parameters: | |
1967 // mgr - GC memory manager | |
1968 // info - caller allocated array of jmmExtAttributeInfo | |
1969 // count - number of elements of the info array | |
1970 // | |
1971 // Returns the number of GC extension attributes filled in the info array; or | |
1972 // -1 if info is not big enough | |
1973 // | |
1974 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1975 // All GC memory managers have 1 attribute (number of GC threads) | |
1976 if (count == 0) { | |
1977 return 0; | |
1978 } | |
1979 | |
1980 if (info == NULL) { | |
1981 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1982 } | |
1983 | |
1984 info[0].name = "GcThreadCount"; | |
1985 info[0].type = 'I'; | |
1986 info[0].description = "Number of GC threads"; | |
1987 return 1; | |
1988 JVM_END | |
1989 | |
1990 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1991 // of a given length and return the objArrayOop | |
1992 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1993 if (array == NULL) { | |
1994 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1995 } | |
1996 | |
1997 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1998 objArrayHandle array_h(THREAD, oa); | |
1999 | |
2000 // array must be of the given length | |
2001 if (length != array_h->length()) { | |
2002 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
2003 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
2004 } | |
2005 | |
2006 // check if the element of array is of type MemoryUsage class | |
2007 klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); | |
2008 klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); | |
2009 if (element_klass != usage_klass) { | |
2010 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
2011 "The element type is not MemoryUsage class", 0); | |
2012 } | |
2013 | |
2014 return array_h(); | |
2015 } | |
2016 | |
2017 // Gets the statistics of the last GC of a given GC memory manager. | |
2018 // Input parameters: | |
2019 // obj - GarbageCollectorMXBean object | |
2020 // gc_stat - caller allocated jmmGCStat where: | |
2021 // a. before_gc_usage - array of MemoryUsage objects | |
2022 // b. after_gc_usage - array of MemoryUsage objects | |
2023 // c. gc_ext_attributes_values_size is set to the | |
2024 // gc_ext_attribute_values array allocated | |
2025 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
2026 // | |
2027 // On return, | |
2028 // gc_index == 0 indicates no GC statistics available | |
2029 // | |
2030 // before_gc_usage and after_gc_usage - filled with per memory pool | |
2031 // before and after GC usage in the same order as the memory pools | |
2032 // returned by GetMemoryPools for a given GC memory manager. | |
2033 // num_gc_ext_attributes indicates the number of elements in | |
2034 // the gc_ext_attribute_values array is filled; or | |
2035 // -1 if the gc_ext_attributes_values array is not big enough | |
2036 // | |
2037 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
2038 ResourceMark rm(THREAD); | |
2039 | |
2040 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
2041 THROW(vmSymbols::java_lang_NullPointerException()); | |
2042 } | |
2043 | |
2044 // Get the GCMemoryManager | |
2045 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
2046 | |
2047 // Make a copy of the last GC statistics | |
2048 // GC may occur while constructing the last GC information | |
2049 int num_pools = MemoryService::num_memory_pools(); | |
2050 GCStatInfo* stat = new GCStatInfo(num_pools); | |
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2051 if (mgr->get_last_gc_stat(stat) == 0) { |
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2052 gc_stat->gc_index = 0; |
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2053 return; |
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2054 } |
0 | 2055 |
2056 gc_stat->gc_index = stat->gc_index(); | |
2057 gc_stat->start_time = Management::ticks_to_ms(stat->start_time()); | |
2058 gc_stat->end_time = Management::ticks_to_ms(stat->end_time()); | |
2059 | |
2060 // Current implementation does not have GC extension attributes | |
2061 gc_stat->num_gc_ext_attributes = 0; | |
2062 | |
2063 // Fill the arrays of MemoryUsage objects with before and after GC | |
2064 // per pool memory usage | |
2065 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2066 num_pools, | |
2067 CHECK); | |
2068 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2069 | |
2070 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2071 num_pools, | |
2072 CHECK); | |
2073 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2074 | |
2075 for (int i = 0; i < num_pools; i++) { | |
2076 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK); | |
2077 Handle after_usage; | |
2078 | |
2079 MemoryUsage u = stat->after_gc_usage_for_pool(i); | |
2080 if (u.max_size() == 0 && u.used() > 0) { | |
2081 // If max size == 0, this pool is a survivor space. | |
2082 // Set max size = -1 since the pools will be swapped after GC. | |
2083 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2084 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2085 } else { | |
2086 after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK); | |
2087 } | |
2088 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2089 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2090 } | |
2091 | |
2092 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2093 // Current implementation only has 1 attribute (number of GC threads) | |
2094 // The type is 'I' | |
2095 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2096 } | |
2097 JVM_END | |
2098 | |
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2099 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) |
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2100 ResourceMark rm(THREAD); |
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2101 // Get the GCMemoryManager |
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2102 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
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2103 mgr->set_notification_enabled(enabled?true:false); |
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2104 JVM_END |
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2105 |
0 | 2106 // Dump heap - Returns 0 if succeeds. |
2107 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
2108 #ifndef SERVICES_KERNEL | |
2109 ResourceMark rm(THREAD); | |
2110 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2111 if (on == NULL) { | |
2112 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2113 "Output file name cannot be null.", -1); | |
2114 } | |
2115 char* name = java_lang_String::as_utf8_string(on); | |
2116 if (name == NULL) { | |
2117 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2118 "Output file name cannot be null.", -1); | |
2119 } | |
2120 HeapDumper dumper(live ? true : false); | |
2121 if (dumper.dump(name) != 0) { | |
2122 const char* errmsg = dumper.error_as_C_string(); | |
2123 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2124 } | |
2125 return 0; | |
2126 #else // SERVICES_KERNEL | |
2127 return -1; | |
2128 #endif // SERVICES_KERNEL | |
2129 JVM_END | |
2130 | |
4133 | 2131 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env)) |
2132 ResourceMark rm(THREAD); | |
2133 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(); | |
2134 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(), | |
2135 dcmd_list->length(), CHECK_NULL); | |
2136 objArrayHandle cmd_array(THREAD, cmd_array_oop); | |
2137 for (int i = 0; i < dcmd_list->length(); i++) { | |
2138 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL); | |
2139 cmd_array->obj_at_put(i, cmd_name); | |
2140 } | |
2141 return (jobjectArray) JNIHandles::make_local(env, cmd_array()); | |
2142 JVM_END | |
2143 | |
2144 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds, | |
2145 dcmdInfo* infoArray)) | |
2146 if (cmds == NULL || infoArray == NULL) { | |
2147 THROW(vmSymbols::java_lang_NullPointerException()); | |
2148 } | |
2149 | |
2150 ResourceMark rm(THREAD); | |
2151 | |
2152 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds)); | |
2153 objArrayHandle cmds_ah(THREAD, ca); | |
2154 | |
2155 // Make sure we have a String array | |
2156 klassOop element_klass = objArrayKlass::cast(cmds_ah->klass())->element_klass(); | |
2157 if (element_klass != SystemDictionary::String_klass()) { | |
2158 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2159 "Array element type is not String class"); | |
2160 } | |
2161 | |
2162 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(); | |
2163 | |
2164 int num_cmds = cmds_ah->length(); | |
2165 for (int i = 0; i < num_cmds; i++) { | |
2166 oop cmd = cmds_ah->obj_at(i); | |
2167 if (cmd == NULL) { | |
2168 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2169 "Command name cannot be null."); | |
2170 } | |
2171 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2172 if (cmd_name == NULL) { | |
2173 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2174 "Command name cannot be null."); | |
2175 } | |
2176 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name); | |
2177 if (pos == -1) { | |
2178 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2179 "Unknown diagnostic command"); | |
2180 } | |
2181 DCmdInfo* info = info_list->at(pos); | |
2182 infoArray[i].name = info->name(); | |
2183 infoArray[i].description = info->description(); | |
2184 infoArray[i].impact = info->impact(); | |
2185 infoArray[i].num_arguments = info->num_arguments(); | |
2186 infoArray[i].enabled = info->is_enabled(); | |
2187 } | |
2188 JVM_END | |
2189 | |
2190 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env, | |
2191 jstring command, dcmdArgInfo* infoArray)) | |
2192 ResourceMark rm(THREAD); | |
2193 oop cmd = JNIHandles::resolve_external_guard(command); | |
2194 if (cmd == NULL) { | |
2195 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2196 "Command line cannot be null."); | |
2197 } | |
2198 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2199 if (cmd_name == NULL) { | |
2200 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2201 "Command line content cannot be null."); | |
2202 } | |
2203 DCmd* dcmd = NULL; | |
2204 DCmdFactory*factory = DCmdFactory::factory(cmd_name, strlen(cmd_name)); | |
2205 if (factory != NULL) { | |
2206 dcmd = factory->create_resource_instance(NULL); | |
2207 } | |
2208 if (dcmd == NULL) { | |
2209 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2210 "Unknown diagnostic command"); | |
2211 } | |
2212 DCmdMark mark(dcmd); | |
2213 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array(); | |
2214 if (array->length() == 0) { | |
2215 return; | |
2216 } | |
2217 for (int i = 0; i < array->length(); i++) { | |
2218 infoArray[i].name = array->at(i)->name(); | |
2219 infoArray[i].description = array->at(i)->description(); | |
2220 infoArray[i].type = array->at(i)->type(); | |
2221 infoArray[i].default_string = array->at(i)->default_string(); | |
2222 infoArray[i].mandatory = array->at(i)->is_mandatory(); | |
2223 infoArray[i].option = array->at(i)->is_option(); | |
2224 infoArray[i].position = array->at(i)->position(); | |
2225 } | |
2226 return; | |
2227 JVM_END | |
2228 | |
2229 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline)) | |
2230 ResourceMark rm(THREAD); | |
2231 oop cmd = JNIHandles::resolve_external_guard(commandline); | |
2232 if (cmd == NULL) { | |
2233 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2234 "Command line cannot be null."); | |
2235 } | |
2236 char* cmdline = java_lang_String::as_utf8_string(cmd); | |
2237 if (cmdline == NULL) { | |
2238 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2239 "Command line content cannot be null."); | |
2240 } | |
2241 bufferedStream output; | |
2242 DCmd::parse_and_execute(&output, cmdline, ' ', CHECK_NULL); | |
2243 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL); | |
2244 return (jstring) JNIHandles::make_local(env, result); | |
2245 JVM_END | |
2246 | |
0 | 2247 jlong Management::ticks_to_ms(jlong ticks) { |
2248 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2249 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2250 * (double)1000.0); | |
2251 } | |
2252 | |
2253 const struct jmmInterface_1_ jmm_interface = { | |
2254 NULL, | |
2255 NULL, | |
2256 jmm_GetVersion, | |
2257 jmm_GetOptionalSupport, | |
2258 jmm_GetInputArguments, | |
2259 jmm_GetThreadInfo, | |
2260 jmm_GetInputArgumentArray, | |
2261 jmm_GetMemoryPools, | |
2262 jmm_GetMemoryManagers, | |
2263 jmm_GetMemoryPoolUsage, | |
2264 jmm_GetPeakMemoryPoolUsage, | |
2100
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2265 jmm_GetThreadAllocatedMemory, |
0 | 2266 jmm_GetMemoryUsage, |
2267 jmm_GetLongAttribute, | |
2268 jmm_GetBoolAttribute, | |
2269 jmm_SetBoolAttribute, | |
2270 jmm_GetLongAttributes, | |
2271 jmm_FindMonitorDeadlockedThreads, | |
2272 jmm_GetThreadCpuTime, | |
2273 jmm_GetVMGlobalNames, | |
2274 jmm_GetVMGlobals, | |
2275 jmm_GetInternalThreadTimes, | |
2276 jmm_ResetStatistic, | |
2277 jmm_SetPoolSensor, | |
2278 jmm_SetPoolThreshold, | |
2279 jmm_GetPoolCollectionUsage, | |
2280 jmm_GetGCExtAttributeInfo, | |
2281 jmm_GetLastGCStat, | |
2282 jmm_GetThreadCpuTimeWithKind, | |
2100
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2283 jmm_GetThreadCpuTimesWithKind, |
0 | 2284 jmm_DumpHeap0, |
2285 jmm_FindDeadlockedThreads, | |
2286 jmm_SetVMGlobal, | |
2287 NULL, | |
3356
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2288 jmm_DumpThreads, |
4133 | 2289 jmm_SetGCNotificationEnabled, |
2290 jmm_GetDiagnosticCommands, | |
2291 jmm_GetDiagnosticCommandInfo, | |
2292 jmm_GetDiagnosticCommandArgumentsInfo, | |
2293 jmm_ExecuteDiagnosticCommand | |
0 | 2294 }; |
2295 | |
2296 void* Management::get_jmm_interface(int version) { | |
2297 if (version == JMM_VERSION_1_0) { | |
2298 return (void*) &jmm_interface; | |
2299 } | |
2300 return NULL; | |
2301 } |