Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 6770:9a86ddfc6c8f
7188594: Print statistic collected by NMT with VM flag
Summary: Print out statistics of collected NMT data if it is on at VM exits
Reviewed-by: kvn, coleenp, twisti
author | zgu |
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date | Mon, 17 Sep 2012 16:37:26 -0400 |
parents | da91efe96a93 |
children | 6af8f3562069 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2012, 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/objArrayKlass.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "runtime/arguments.hpp" | |
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35 #include "runtime/globals.hpp" |
1972 | 36 #include "runtime/handles.inline.hpp" |
37 #include "runtime/interfaceSupport.hpp" | |
38 #include "runtime/javaCalls.hpp" | |
39 #include "runtime/jniHandles.hpp" | |
40 #include "runtime/os.hpp" | |
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41 #include "runtime/serviceThread.hpp" |
1972 | 42 #include "services/classLoadingService.hpp" |
4133 | 43 #include "services/diagnosticCommand.hpp" |
44 #include "services/diagnosticFramework.hpp" | |
1972 | 45 #include "services/heapDumper.hpp" |
4133 | 46 #include "services/jmm.h" |
1972 | 47 #include "services/lowMemoryDetector.hpp" |
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48 #include "services/gcNotifier.hpp" |
6197 | 49 #include "services/nmtDCmd.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 | |
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61 Klass* Management::_sensor_klass = NULL; |
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62 Klass* Management::_threadInfo_klass = NULL; |
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63 Klass* Management::_memoryUsage_klass = NULL; |
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64 Klass* Management::_memoryPoolMXBean_klass = NULL; |
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65 Klass* Management::_memoryManagerMXBean_klass = NULL; |
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66 Klass* Management::_garbageCollectorMXBean_klass = NULL; |
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67 Klass* Management::_managementFactory_klass = NULL; |
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68 Klass* Management::_garbageCollectorImpl_klass = NULL; |
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69 Klass* 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 |
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122 DCmdRegistrant::register_dcmds(); |
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123 DCmdRegistrant::register_dcmds_ext(); |
6197 | 124 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(true, false)); |
0 | 125 } |
126 | |
127 void Management::initialize(TRAPS) { | |
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128 // Start the service thread |
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129 ServiceThread::initialize(); |
0 | 130 |
131 if (ManagementServer) { | |
132 ResourceMark rm(THREAD); | |
133 HandleMark hm(THREAD); | |
134 | |
135 // Load and initialize the sun.management.Agent class | |
136 // invoke startAgent method to start the management server | |
137 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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138 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 139 loader, |
140 Handle(), | |
141 true, | |
142 CHECK); | |
143 instanceKlassHandle ik (THREAD, k); | |
144 | |
145 JavaValue result(T_VOID); | |
146 JavaCalls::call_static(&result, | |
147 ik, | |
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148 vmSymbols::startAgent_name(), |
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149 vmSymbols::void_method_signature(), |
0 | 150 CHECK); |
151 } | |
152 } | |
153 | |
154 void Management::get_optional_support(jmmOptionalSupport* support) { | |
155 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
156 } | |
157 | |
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158 Klass* Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
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159 Klass* k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
0 | 160 instanceKlassHandle ik (THREAD, k); |
161 if (ik->should_be_initialized()) { | |
162 ik->initialize(CHECK_NULL); | |
163 } | |
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164 // If these classes change to not be owned by the boot loader, they need |
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165 // to be walked to keep their class loader alive in oops_do. |
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166 assert(ik->class_loader() == NULL, "need to follow in oops_do"); |
0 | 167 return ik(); |
168 } | |
169 | |
170 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
171 // if the performance counter is not initialized, | |
172 // then vm initialization failed; simply return. | |
173 if (_begin_vm_creation_time == NULL) return; | |
174 | |
175 _begin_vm_creation_time->set_value(begin); | |
176 _end_vm_creation_time->set_value(begin + duration); | |
177 PerfMemory::set_accessible(true); | |
178 } | |
179 | |
180 jlong Management::timestamp() { | |
181 TimeStamp t; | |
182 t.update(); | |
183 return t.ticks() - _stamp.ticks(); | |
184 } | |
185 | |
186 void Management::oops_do(OopClosure* f) { | |
187 MemoryService::oops_do(f); | |
188 ThreadService::oops_do(f); | |
189 } | |
190 | |
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191 Klass* Management::java_lang_management_ThreadInfo_klass(TRAPS) { |
0 | 192 if (_threadInfo_klass == NULL) { |
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193 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 194 } |
195 return _threadInfo_klass; | |
196 } | |
197 | |
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198 Klass* Management::java_lang_management_MemoryUsage_klass(TRAPS) { |
0 | 199 if (_memoryUsage_klass == NULL) { |
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200 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 201 } |
202 return _memoryUsage_klass; | |
203 } | |
204 | |
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205 Klass* Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { |
0 | 206 if (_memoryPoolMXBean_klass == NULL) { |
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207 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 208 } |
209 return _memoryPoolMXBean_klass; | |
210 } | |
211 | |
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212 Klass* Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { |
0 | 213 if (_memoryManagerMXBean_klass == NULL) { |
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214 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 215 } |
216 return _memoryManagerMXBean_klass; | |
217 } | |
218 | |
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219 Klass* Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { |
0 | 220 if (_garbageCollectorMXBean_klass == NULL) { |
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221 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 222 } |
223 return _garbageCollectorMXBean_klass; | |
224 } | |
225 | |
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226 Klass* Management::sun_management_Sensor_klass(TRAPS) { |
0 | 227 if (_sensor_klass == NULL) { |
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228 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 229 } |
230 return _sensor_klass; | |
231 } | |
232 | |
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233 Klass* Management::sun_management_ManagementFactory_klass(TRAPS) { |
0 | 234 if (_managementFactory_klass == NULL) { |
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235 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 236 } |
237 return _managementFactory_klass; | |
238 } | |
239 | |
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240 Klass* Management::sun_management_GarbageCollectorImpl_klass(TRAPS) { |
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241 if (_garbageCollectorImpl_klass == NULL) { |
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242 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL); |
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243 } |
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244 return _garbageCollectorImpl_klass; |
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245 } |
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246 |
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247 Klass* Management::com_sun_management_GcInfo_klass(TRAPS) { |
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248 if (_gcInfo_klass == NULL) { |
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249 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); |
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250 } |
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251 return _gcInfo_klass; |
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252 } |
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253 |
0 | 254 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
255 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
256 | |
257 jlong contended_time; | |
258 jlong waited_time; | |
259 if (ThreadService::is_thread_monitoring_contention()) { | |
260 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
261 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
262 } else { | |
263 // set them to -1 if thread contention monitoring is disabled. | |
264 contended_time = max_julong; | |
265 waited_time = max_julong; | |
266 } | |
267 | |
268 int thread_status = snapshot->thread_status(); | |
269 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
270 if (snapshot->is_ext_suspended()) { | |
271 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
272 } | |
273 if (snapshot->is_in_native()) { | |
274 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
275 } | |
276 | |
277 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
278 Handle stacktrace_h; | |
279 if (st != NULL) { | |
280 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
281 } else { | |
282 stacktrace_h = Handle(); | |
283 } | |
284 | |
285 args->push_oop(snapshot_thread); | |
286 args->push_int(thread_status); | |
287 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
288 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
289 args->push_long(snapshot->contended_enter_count()); | |
290 args->push_long(contended_time); | |
291 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
292 args->push_long(waited_time); | |
293 args->push_oop(stacktrace_h); | |
294 } | |
295 | |
296 // Helper function to construct a ThreadInfo object | |
297 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
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298 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
0 | 299 instanceKlassHandle ik (THREAD, k); |
300 | |
301 JavaValue result(T_VOID); | |
302 JavaCallArguments args(14); | |
303 | |
304 // First allocate a ThreadObj object and | |
305 // push the receiver as the first argument | |
306 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
307 args.push_oop(element); | |
308 | |
309 // initialize the arguments for the ThreadInfo constructor | |
310 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
311 | |
312 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
313 JavaCalls::call_special(&result, | |
314 ik, | |
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315 vmSymbols::object_initializer_name(), |
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316 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 317 &args, |
318 CHECK_NULL); | |
319 | |
320 return (instanceOop) element(); | |
321 } | |
322 | |
323 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
324 objArrayHandle monitors_array, | |
325 typeArrayHandle depths_array, | |
326 objArrayHandle synchronizers_array, | |
327 TRAPS) { | |
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328 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
0 | 329 instanceKlassHandle ik (THREAD, k); |
330 | |
331 JavaValue result(T_VOID); | |
332 JavaCallArguments args(17); | |
333 | |
334 // First allocate a ThreadObj object and | |
335 // push the receiver as the first argument | |
336 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
337 args.push_oop(element); | |
338 | |
339 // initialize the arguments for the ThreadInfo constructor | |
340 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
341 | |
342 // push the locked monitors and synchronizers in the arguments | |
343 args.push_oop(monitors_array); | |
344 args.push_oop(depths_array); | |
345 args.push_oop(synchronizers_array); | |
346 | |
347 // Call ThreadInfo constructor with locked monitors and synchronizers | |
348 JavaCalls::call_special(&result, | |
349 ik, | |
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350 vmSymbols::object_initializer_name(), |
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351 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 352 &args, |
353 CHECK_NULL); | |
354 | |
355 return (instanceOop) element(); | |
356 } | |
357 | |
358 // Helper functions | |
359 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
360 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
361 | |
362 JavaThread* java_thread = NULL; | |
363 // Sequential search for now. Need to do better optimization later. | |
364 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
365 oop tobj = thread->threadObj(); | |
366 if (!thread->is_exiting() && | |
367 tobj != NULL && | |
368 thread_id == java_lang_Thread::thread_id(tobj)) { | |
369 java_thread = thread; | |
370 break; | |
371 } | |
372 } | |
373 return java_thread; | |
374 } | |
375 | |
376 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
377 if (mgr == NULL) { | |
378 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
379 } | |
380 oop mgr_obj = JNIHandles::resolve(mgr); | |
381 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
382 | |
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383 Klass* k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); |
0 | 384 if (!h->is_a(k)) { |
385 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
386 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
387 NULL); | |
388 } | |
389 | |
390 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
391 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
392 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
393 "Invalid GC memory manager", | |
394 NULL); | |
395 } | |
396 return (GCMemoryManager*) gc; | |
397 } | |
398 | |
399 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
400 if (obj == NULL) { | |
401 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
402 } | |
403 | |
404 oop pool_obj = JNIHandles::resolve(obj); | |
405 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
406 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
407 | |
408 return MemoryService::get_memory_pool(ph); | |
409 } | |
410 | |
411 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
412 int num_threads = ids_ah->length(); | |
413 | |
414 // Validate input thread IDs | |
415 int i = 0; | |
416 for (i = 0; i < num_threads; i++) { | |
417 jlong tid = ids_ah->long_at(i); | |
418 if (tid <= 0) { | |
419 // throw exception if invalid thread id. | |
420 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
421 "Invalid thread ID entry"); | |
422 } | |
423 } | |
424 } | |
425 | |
426 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
427 // check if the element of infoArray is of type ThreadInfo class | |
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428 Klass* threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); |
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429 Klass* element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); |
0 | 430 if (element_klass != threadinfo_klass) { |
431 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
432 "infoArray element type is not ThreadInfo class"); | |
433 } | |
434 } | |
435 | |
436 | |
437 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
438 if (obj == NULL) { | |
439 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
440 } | |
441 | |
442 oop mgr_obj = JNIHandles::resolve(obj); | |
443 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
444 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
445 | |
446 return MemoryService::get_memory_manager(mh); | |
447 } | |
448 | |
449 // Returns a version string and sets major and minor version if | |
450 // the input parameters are non-null. | |
451 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
452 return JMM_VERSION; | |
453 JVM_END | |
454 | |
455 // Gets the list of VM monitoring and management optional supports | |
456 // Returns 0 if succeeded; otherwise returns non-zero. | |
457 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
458 if (support == NULL) { | |
459 return -1; | |
460 } | |
461 Management::get_optional_support(support); | |
462 return 0; | |
463 JVM_END | |
464 | |
465 // Returns a java.lang.String object containing the input arguments to the VM. | |
466 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
467 ResourceMark rm(THREAD); | |
468 | |
469 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
470 return NULL; | |
471 } | |
472 | |
473 char** vm_flags = Arguments::jvm_flags_array(); | |
474 char** vm_args = Arguments::jvm_args_array(); | |
475 int num_flags = Arguments::num_jvm_flags(); | |
476 int num_args = Arguments::num_jvm_args(); | |
477 | |
478 size_t length = 1; // null terminator | |
479 int i; | |
480 for (i = 0; i < num_flags; i++) { | |
481 length += strlen(vm_flags[i]); | |
482 } | |
483 for (i = 0; i < num_args; i++) { | |
484 length += strlen(vm_args[i]); | |
485 } | |
486 // add a space between each argument | |
487 length += num_flags + num_args - 1; | |
488 | |
489 // Return the list of input arguments passed to the VM | |
490 // and preserve the order that the VM processes. | |
491 char* args = NEW_RESOURCE_ARRAY(char, length); | |
492 args[0] = '\0'; | |
493 // concatenate all jvm_flags | |
494 if (num_flags > 0) { | |
495 strcat(args, vm_flags[0]); | |
496 for (i = 1; i < num_flags; i++) { | |
497 strcat(args, " "); | |
498 strcat(args, vm_flags[i]); | |
499 } | |
500 } | |
501 | |
502 if (num_args > 0 && num_flags > 0) { | |
503 // append a space if args already contains one or more jvm_flags | |
504 strcat(args, " "); | |
505 } | |
506 | |
507 // concatenate all jvm_args | |
508 if (num_args > 0) { | |
509 strcat(args, vm_args[0]); | |
510 for (i = 1; i < num_args; i++) { | |
511 strcat(args, " "); | |
512 strcat(args, vm_args[i]); | |
513 } | |
514 } | |
515 | |
516 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
517 return JNIHandles::make_local(env, hargs()); | |
518 JVM_END | |
519 | |
520 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
521 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
522 ResourceMark rm(THREAD); | |
523 | |
524 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
525 return NULL; | |
526 } | |
527 | |
528 char** vm_flags = Arguments::jvm_flags_array(); | |
529 char** vm_args = Arguments::jvm_args_array(); | |
530 int num_flags = Arguments::num_jvm_flags(); | |
531 int num_args = Arguments::num_jvm_args(); | |
532 | |
1142 | 533 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 534 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
535 objArrayHandle result_h(THREAD, r); | |
536 | |
537 int index = 0; | |
538 for (int j = 0; j < num_flags; j++, index++) { | |
539 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
540 result_h->obj_at_put(index, h()); | |
541 } | |
542 for (int i = 0; i < num_args; i++, index++) { | |
543 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
544 result_h->obj_at_put(index, h()); | |
545 } | |
546 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
547 JVM_END | |
548 | |
549 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
550 // one for each memory pool if obj == null; otherwise returns | |
551 // an array of memory pools for a given memory manager if | |
552 // it is a valid memory manager. | |
553 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
554 ResourceMark rm(THREAD); | |
555 | |
556 int num_memory_pools; | |
557 MemoryManager* mgr = NULL; | |
558 if (obj == NULL) { | |
559 num_memory_pools = MemoryService::num_memory_pools(); | |
560 } else { | |
561 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
562 if (mgr == NULL) { | |
563 return NULL; | |
564 } | |
565 num_memory_pools = mgr->num_memory_pools(); | |
566 } | |
567 | |
568 // Allocate the resulting MemoryPoolMXBean[] object | |
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569 Klass* k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); |
0 | 570 instanceKlassHandle ik (THREAD, k); |
571 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
572 objArrayHandle poolArray(THREAD, r); | |
573 | |
574 if (mgr == NULL) { | |
575 // Get all memory pools | |
576 for (int i = 0; i < num_memory_pools; i++) { | |
577 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
578 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
579 instanceHandle ph(THREAD, p); | |
580 poolArray->obj_at_put(i, ph()); | |
581 } | |
582 } else { | |
583 // Get memory pools managed by a given memory manager | |
584 for (int i = 0; i < num_memory_pools; i++) { | |
585 MemoryPool* pool = mgr->get_memory_pool(i); | |
586 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
587 instanceHandle ph(THREAD, p); | |
588 poolArray->obj_at_put(i, ph()); | |
589 } | |
590 } | |
591 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
592 JVM_END | |
593 | |
594 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
595 // one for each memory manager if obj == null; otherwise returns | |
596 // an array of memory managers for a given memory pool if | |
597 // it is a valid memory pool. | |
598 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
599 ResourceMark rm(THREAD); | |
600 | |
601 int num_mgrs; | |
602 MemoryPool* pool = NULL; | |
603 if (obj == NULL) { | |
604 num_mgrs = MemoryService::num_memory_managers(); | |
605 } else { | |
606 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
607 if (pool == NULL) { | |
608 return NULL; | |
609 } | |
610 num_mgrs = pool->num_memory_managers(); | |
611 } | |
612 | |
613 // Allocate the resulting MemoryManagerMXBean[] object | |
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614 Klass* k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); |
0 | 615 instanceKlassHandle ik (THREAD, k); |
616 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
617 objArrayHandle mgrArray(THREAD, r); | |
618 | |
619 if (pool == NULL) { | |
620 // Get all memory managers | |
621 for (int i = 0; i < num_mgrs; i++) { | |
622 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
623 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
624 instanceHandle ph(THREAD, p); | |
625 mgrArray->obj_at_put(i, ph()); | |
626 } | |
627 } else { | |
628 // Get memory managers for a given memory pool | |
629 for (int i = 0; i < num_mgrs; i++) { | |
630 MemoryManager* mgr = pool->get_memory_manager(i); | |
631 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
632 instanceHandle ph(THREAD, p); | |
633 mgrArray->obj_at_put(i, ph()); | |
634 } | |
635 } | |
636 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
637 JVM_END | |
638 | |
639 | |
640 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
641 // of a given memory pool. | |
642 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
643 ResourceMark rm(THREAD); | |
644 | |
645 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
646 if (pool != NULL) { | |
647 MemoryUsage usage = pool->get_memory_usage(); | |
648 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
649 return JNIHandles::make_local(env, h()); | |
650 } else { | |
651 return NULL; | |
652 } | |
653 JVM_END | |
654 | |
655 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
656 // of a given memory pool. | |
657 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
658 ResourceMark rm(THREAD); | |
659 | |
660 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
661 if (pool != NULL) { | |
662 MemoryUsage usage = pool->get_peak_memory_usage(); | |
663 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
664 return JNIHandles::make_local(env, h()); | |
665 } else { | |
666 return NULL; | |
667 } | |
668 JVM_END | |
669 | |
670 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
671 // of a given memory pool after most recent GC. | |
672 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
673 ResourceMark rm(THREAD); | |
674 | |
675 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
676 if (pool != NULL && pool->is_collected_pool()) { | |
677 MemoryUsage usage = pool->get_last_collection_usage(); | |
678 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
679 return JNIHandles::make_local(env, h()); | |
680 } else { | |
681 return NULL; | |
682 } | |
683 JVM_END | |
684 | |
685 // Sets the memory pool sensor for a threshold type | |
686 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
687 if (obj == NULL || sensorObj == NULL) { | |
688 THROW(vmSymbols::java_lang_NullPointerException()); | |
689 } | |
690 | |
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691 Klass* sensor_klass = Management::sun_management_Sensor_klass(CHECK); |
0 | 692 oop s = JNIHandles::resolve(sensorObj); |
693 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
694 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
695 if (!sensor_h->is_a(sensor_klass)) { | |
696 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
697 "Sensor is not an instance of sun.management.Sensor class"); | |
698 } | |
699 | |
700 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
701 assert(mpool != NULL, "MemoryPool should exist"); | |
702 | |
703 switch (type) { | |
704 case JMM_USAGE_THRESHOLD_HIGH: | |
705 case JMM_USAGE_THRESHOLD_LOW: | |
706 // have only one sensor for threshold high and low | |
707 mpool->set_usage_sensor_obj(sensor_h); | |
708 break; | |
709 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
710 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
711 // have only one sensor for threshold high and low | |
712 mpool->set_gc_usage_sensor_obj(sensor_h); | |
713 break; | |
714 default: | |
715 assert(false, "Unrecognized type"); | |
716 } | |
717 | |
718 JVM_END | |
719 | |
720 | |
721 // Sets the threshold of a given memory pool. | |
722 // Returns the previous threshold. | |
723 // | |
724 // Input parameters: | |
725 // pool - the MemoryPoolMXBean object | |
726 // type - threshold type | |
727 // threshold - the new threshold (must not be negative) | |
728 // | |
729 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
730 if (threshold < 0) { | |
731 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
732 "Invalid threshold value", | |
733 -1); | |
734 } | |
735 | |
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736 if ((size_t)threshold > max_uintx) { |
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737 stringStream st; |
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738 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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739 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 740 } |
741 | |
742 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
743 assert(pool != NULL, "MemoryPool should exist"); | |
744 | |
745 jlong prev = 0; | |
746 switch (type) { | |
747 case JMM_USAGE_THRESHOLD_HIGH: | |
748 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
749 return -1; | |
750 } | |
751 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
752 break; | |
753 | |
754 case JMM_USAGE_THRESHOLD_LOW: | |
755 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
756 return -1; | |
757 } | |
758 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
759 break; | |
760 | |
761 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
762 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
763 return -1; | |
764 } | |
765 // return and the new threshold is effective for the next GC | |
766 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
767 | |
768 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
769 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
770 return -1; | |
771 } | |
772 // return and the new threshold is effective for the next GC | |
773 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
774 | |
775 default: | |
776 assert(false, "Unrecognized type"); | |
777 return -1; | |
778 } | |
779 | |
780 // When the threshold is changed, reevaluate if the low memory | |
781 // detection is enabled. | |
782 if (prev != threshold) { | |
783 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
784 LowMemoryDetector::detect_low_memory(pool); | |
785 } | |
786 return prev; | |
787 JVM_END | |
788 | |
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789 // Gets an array containing the amount of memory allocated on the Java |
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790 // heap for a set of threads (in bytes). Each element of the array is |
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791 // the amount of memory allocated for the thread ID specified in the |
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792 // corresponding entry in the given array of thread IDs; or -1 if the |
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793 // thread does not exist or has terminated. |
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794 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
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795 jlongArray sizeArray)) |
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796 // Check if threads is null |
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797 if (ids == NULL || sizeArray == NULL) { |
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798 THROW(vmSymbols::java_lang_NullPointerException()); |
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799 } |
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800 |
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801 ResourceMark rm(THREAD); |
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802 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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803 typeArrayHandle ids_ah(THREAD, ta); |
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804 |
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805 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
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806 typeArrayHandle sizeArray_h(THREAD, sa); |
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807 |
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808 // validate the thread id array |
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809 validate_thread_id_array(ids_ah, CHECK); |
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810 |
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811 // sizeArray must be of the same length as the given array of thread IDs |
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812 int num_threads = ids_ah->length(); |
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813 if (num_threads != sizeArray_h->length()) { |
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814 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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815 "The length of the given long array does not match the length of " |
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816 "the given array of thread IDs"); |
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817 } |
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818 |
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819 MutexLockerEx ml(Threads_lock); |
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820 for (int i = 0; i < num_threads; i++) { |
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821 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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822 if (java_thread != NULL) { |
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823 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
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824 } |
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825 } |
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826 JVM_END |
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827 |
0 | 828 // Returns a java/lang/management/MemoryUsage object representing |
829 // the memory usage for the heap or non-heap memory. | |
830 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
831 ResourceMark rm(THREAD); | |
832 | |
833 // Calculate the memory usage | |
834 size_t total_init = 0; | |
835 size_t total_used = 0; | |
836 size_t total_committed = 0; | |
837 size_t total_max = 0; | |
838 bool has_undefined_init_size = false; | |
839 bool has_undefined_max_size = false; | |
840 | |
841 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
842 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
843 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
844 MemoryUsage u = pool->get_memory_usage(); | |
845 total_used += u.used(); | |
846 total_committed += u.committed(); | |
847 | |
848 // if any one of the memory pool has undefined init_size or max_size, | |
849 // set it to -1 | |
850 if (u.init_size() == (size_t)-1) { | |
851 has_undefined_init_size = true; | |
852 } | |
853 if (!has_undefined_init_size) { | |
854 total_init += u.init_size(); | |
855 } | |
856 | |
857 if (u.max_size() == (size_t)-1) { | |
858 has_undefined_max_size = true; | |
859 } | |
860 if (!has_undefined_max_size) { | |
861 total_max += u.max_size(); | |
862 } | |
863 } | |
864 } | |
865 | |
1757
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866 // In our current implementation, we make sure that all non-heap |
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867 // pools have defined init and max sizes. Heap pools do not matter, |
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868 // as we never use total_init and total_max for them. |
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869 assert(heap || !has_undefined_init_size, "Undefined init size"); |
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870 assert(heap || !has_undefined_max_size, "Undefined max size"); |
0 | 871 |
1064 | 872 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 873 total_used, |
874 total_committed, | |
875 (heap ? Universe::heap()->max_capacity() : total_max)); | |
876 | |
877 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
878 return JNIHandles::make_local(env, obj()); | |
879 JVM_END | |
880 | |
881 // Returns the boolean value of a given attribute. | |
882 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
883 switch (att) { | |
884 case JMM_VERBOSE_GC: | |
885 return MemoryService::get_verbose(); | |
886 case JMM_VERBOSE_CLASS: | |
887 return ClassLoadingService::get_verbose(); | |
888 case JMM_THREAD_CONTENTION_MONITORING: | |
889 return ThreadService::is_thread_monitoring_contention(); | |
890 case JMM_THREAD_CPU_TIME: | |
891 return ThreadService::is_thread_cpu_time_enabled(); | |
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892 case JMM_THREAD_ALLOCATED_MEMORY: |
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893 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 894 default: |
895 assert(0, "Unrecognized attribute"); | |
896 return false; | |
897 } | |
898 JVM_END | |
899 | |
900 // Sets the given boolean attribute and returns the previous value. | |
901 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
902 switch (att) { | |
903 case JMM_VERBOSE_GC: | |
904 return MemoryService::set_verbose(flag != 0); | |
905 case JMM_VERBOSE_CLASS: | |
906 return ClassLoadingService::set_verbose(flag != 0); | |
907 case JMM_THREAD_CONTENTION_MONITORING: | |
908 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
909 case JMM_THREAD_CPU_TIME: | |
910 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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911 case JMM_THREAD_ALLOCATED_MEMORY: |
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912 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 913 default: |
914 assert(0, "Unrecognized attribute"); | |
915 return false; | |
916 } | |
917 JVM_END | |
918 | |
919 | |
920 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
921 switch (att) { | |
922 case JMM_GC_TIME_MS: | |
923 return mgr->gc_time_ms(); | |
924 | |
925 case JMM_GC_COUNT: | |
926 return mgr->gc_count(); | |
927 | |
928 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
929 // current implementation only has 1 ext attribute | |
930 return 1; | |
931 | |
932 default: | |
933 assert(0, "Unrecognized GC attribute"); | |
934 return -1; | |
935 } | |
936 } | |
937 | |
938 class VmThreadCountClosure: public ThreadClosure { | |
939 private: | |
940 int _count; | |
941 public: | |
942 VmThreadCountClosure() : _count(0) {}; | |
943 void do_thread(Thread* thread); | |
944 int count() { return _count; } | |
945 }; | |
946 | |
947 void VmThreadCountClosure::do_thread(Thread* thread) { | |
948 // exclude externally visible JavaThreads | |
949 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
950 return; | |
951 } | |
952 | |
953 _count++; | |
954 } | |
955 | |
956 static jint get_vm_thread_count() { | |
957 VmThreadCountClosure vmtcc; | |
958 { | |
959 MutexLockerEx ml(Threads_lock); | |
960 Threads::threads_do(&vmtcc); | |
961 } | |
962 | |
963 return vmtcc.count(); | |
964 } | |
965 | |
966 static jint get_num_flags() { | |
967 // last flag entry is always NULL, so subtract 1 | |
968 int nFlags = (int) Flag::numFlags - 1; | |
969 int count = 0; | |
970 for (int i = 0; i < nFlags; i++) { | |
971 Flag* flag = &Flag::flags[i]; | |
350 | 972 // Exclude the locked (diagnostic, experimental) flags |
0 | 973 if (flag->is_unlocked() || flag->is_unlocker()) { |
974 count++; | |
975 } | |
976 } | |
977 return count; | |
978 } | |
979 | |
980 static jlong get_long_attribute(jmmLongAttribute att) { | |
981 switch (att) { | |
982 case JMM_CLASS_LOADED_COUNT: | |
983 return ClassLoadingService::loaded_class_count(); | |
984 | |
985 case JMM_CLASS_UNLOADED_COUNT: | |
986 return ClassLoadingService::unloaded_class_count(); | |
987 | |
988 case JMM_THREAD_TOTAL_COUNT: | |
989 return ThreadService::get_total_thread_count(); | |
990 | |
991 case JMM_THREAD_LIVE_COUNT: | |
992 return ThreadService::get_live_thread_count(); | |
993 | |
994 case JMM_THREAD_PEAK_COUNT: | |
995 return ThreadService::get_peak_thread_count(); | |
996 | |
997 case JMM_THREAD_DAEMON_COUNT: | |
998 return ThreadService::get_daemon_thread_count(); | |
999 | |
1000 case JMM_JVM_INIT_DONE_TIME_MS: | |
1001 return Management::vm_init_done_time(); | |
1002 | |
1003 case JMM_COMPILE_TOTAL_TIME_MS: | |
1004 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
1005 | |
1006 case JMM_OS_PROCESS_ID: | |
1007 return os::current_process_id(); | |
1008 | |
1009 // Hotspot-specific counters | |
1010 case JMM_CLASS_LOADED_BYTES: | |
1011 return ClassLoadingService::loaded_class_bytes(); | |
1012 | |
1013 case JMM_CLASS_UNLOADED_BYTES: | |
1014 return ClassLoadingService::unloaded_class_bytes(); | |
1015 | |
1016 case JMM_SHARED_CLASS_LOADED_COUNT: | |
1017 return ClassLoadingService::loaded_shared_class_count(); | |
1018 | |
1019 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
1020 return ClassLoadingService::unloaded_shared_class_count(); | |
1021 | |
1022 | |
1023 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1024 return ClassLoadingService::loaded_shared_class_bytes(); | |
1025 | |
1026 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1027 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1028 | |
1029 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1030 return ClassLoader::classloader_time_ms(); | |
1031 | |
1032 case JMM_VM_GLOBAL_COUNT: | |
1033 return get_num_flags(); | |
1034 | |
1035 case JMM_SAFEPOINT_COUNT: | |
1036 return RuntimeService::safepoint_count(); | |
1037 | |
1038 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1039 return RuntimeService::safepoint_sync_time_ms(); | |
1040 | |
1041 case JMM_TOTAL_STOPPED_TIME_MS: | |
1042 return RuntimeService::safepoint_time_ms(); | |
1043 | |
1044 case JMM_TOTAL_APP_TIME_MS: | |
1045 return RuntimeService::application_time_ms(); | |
1046 | |
1047 case JMM_VM_THREAD_COUNT: | |
1048 return get_vm_thread_count(); | |
1049 | |
1050 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1051 return ClassLoader::class_init_count(); | |
1052 | |
1053 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1054 return ClassLoader::class_init_time_ms(); | |
1055 | |
1056 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1057 return ClassLoader::class_verify_time_ms(); | |
1058 | |
1059 case JMM_METHOD_DATA_SIZE_BYTES: | |
1060 return ClassLoadingService::class_method_data_size(); | |
1061 | |
1062 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1063 return os::physical_memory(); | |
1064 | |
1065 default: | |
1066 return -1; | |
1067 } | |
1068 } | |
1069 | |
1070 | |
1071 // Returns the long value of a given attribute. | |
1072 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1073 if (obj == NULL) { | |
1074 return get_long_attribute(att); | |
1075 } else { | |
1076 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1077 if (mgr != NULL) { | |
1078 return get_gc_attribute(mgr, att); | |
1079 } | |
1080 } | |
1081 return -1; | |
1082 JVM_END | |
1083 | |
1084 // Gets the value of all attributes specified in the given array | |
1085 // and sets the value in the result array. | |
1086 // Returns the number of attributes found. | |
1087 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1088 jobject obj, | |
1089 jmmLongAttribute* atts, | |
1090 jint count, | |
1091 jlong* result)) | |
1092 | |
1093 int num_atts = 0; | |
1094 if (obj == NULL) { | |
1095 for (int i = 0; i < count; i++) { | |
1096 result[i] = get_long_attribute(atts[i]); | |
1097 if (result[i] != -1) { | |
1098 num_atts++; | |
1099 } | |
1100 } | |
1101 } else { | |
1102 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1103 for (int i = 0; i < count; i++) { | |
1104 result[i] = get_gc_attribute(mgr, atts[i]); | |
1105 if (result[i] != -1) { | |
1106 num_atts++; | |
1107 } | |
1108 } | |
1109 } | |
1110 return num_atts; | |
1111 JVM_END | |
1112 | |
1113 // Helper function to do thread dump for a specific list of threads | |
1114 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1115 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1116 int num_threads, | |
1117 int max_depth, | |
1118 bool with_locked_monitors, | |
1119 bool with_locked_synchronizers, | |
1120 TRAPS) { | |
1121 | |
1122 // First get an array of threadObj handles. | |
1123 // A JavaThread may terminate before we get the stack trace. | |
1124 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1125 { | |
1126 MutexLockerEx ml(Threads_lock); | |
1127 for (int i = 0; i < num_threads; i++) { | |
1128 jlong tid = ids_ah->long_at(i); | |
1129 JavaThread* jt = find_java_thread_from_id(tid); | |
1130 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
1131 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1132 thread_handle_array->append(threadObj_h); | |
1133 } | |
1134 } | |
1135 | |
1136 // Obtain thread dumps and thread snapshot information | |
1137 VM_ThreadDump op(dump_result, | |
1138 thread_handle_array, | |
1139 num_threads, | |
1140 max_depth, /* stack depth */ | |
1141 with_locked_monitors, | |
1142 with_locked_synchronizers); | |
1143 VMThread::execute(&op); | |
1144 } | |
1145 | |
1146 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1147 // for the thread ID specified in the corresponding entry in | |
1148 // the given array of thread IDs; or NULL if the thread does not exist | |
1149 // or has terminated. | |
1150 // | |
1151 // Input parameters: | |
1152 // ids - array of thread IDs | |
1153 // maxDepth - the maximum depth of stack traces to be dumped: | |
1154 // maxDepth == -1 requests to dump entire stack trace. | |
1155 // maxDepth == 0 requests no stack trace. | |
1156 // infoArray - array of ThreadInfo objects | |
1157 // | |
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1158 // QQQ - Why does this method return a value instead of void? |
0 | 1159 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1160 // Check if threads is null | |
1161 if (ids == NULL || infoArray == NULL) { | |
1162 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1163 } | |
1164 | |
1165 if (maxDepth < -1) { | |
1166 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1167 "Invalid maxDepth", -1); | |
1168 } | |
1169 | |
1170 ResourceMark rm(THREAD); | |
1171 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1172 typeArrayHandle ids_ah(THREAD, ta); | |
1173 | |
1174 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1175 objArrayOop oa = objArrayOop(infoArray_obj); | |
1176 objArrayHandle infoArray_h(THREAD, oa); | |
1177 | |
1178 // validate the thread id array | |
1179 validate_thread_id_array(ids_ah, CHECK_0); | |
1180 | |
1181 // validate the ThreadInfo[] parameters | |
1182 validate_thread_info_array(infoArray_h, CHECK_0); | |
1183 | |
1184 // infoArray must be of the same length as the given array of thread IDs | |
1185 int num_threads = ids_ah->length(); | |
1186 if (num_threads != infoArray_h->length()) { | |
1187 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1188 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1189 } | |
1190 | |
1191 if (JDK_Version::is_gte_jdk16x_version()) { | |
1192 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1193 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1194 } | |
1195 | |
1196 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1197 // GC may occur after the thread snapshots are taken but before | |
1198 // this function returns. The threadObj and other oops kept | |
1199 // in the ThreadSnapshot are marked and adjusted during GC. | |
1200 ThreadDumpResult dump_result(num_threads); | |
1201 | |
1202 if (maxDepth == 0) { | |
1203 // no stack trace dumped - do not need to stop the world | |
1204 { | |
1205 MutexLockerEx ml(Threads_lock); | |
1206 for (int i = 0; i < num_threads; i++) { | |
1207 jlong tid = ids_ah->long_at(i); | |
1208 JavaThread* jt = find_java_thread_from_id(tid); | |
1209 ThreadSnapshot* ts; | |
1210 if (jt == NULL) { | |
1211 // if the thread does not exist or now it is terminated, | |
1212 // create dummy snapshot | |
1213 ts = new ThreadSnapshot(); | |
1214 } else { | |
1215 ts = new ThreadSnapshot(jt); | |
1216 } | |
1217 dump_result.add_thread_snapshot(ts); | |
1218 } | |
1219 } | |
1220 } else { | |
1221 // obtain thread dump with the specific list of threads with stack trace | |
1222 do_thread_dump(&dump_result, | |
1223 ids_ah, | |
1224 num_threads, | |
1225 maxDepth, | |
1226 false, /* no locked monitor */ | |
1227 false, /* no locked synchronizers */ | |
1228 CHECK_0); | |
1229 } | |
1230 | |
1231 int num_snapshots = dump_result.num_snapshots(); | |
1232 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1233 int index = 0; | |
1234 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1235 // For each thread, create an java/lang/management/ThreadInfo object | |
1236 // and fill with the thread information | |
1237 | |
1238 if (ts->threadObj() == NULL) { | |
1239 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1240 infoArray_h->obj_at_put(index, NULL); | |
1241 continue; | |
1242 } | |
1243 | |
1244 // Create java.lang.management.ThreadInfo object | |
1245 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1246 infoArray_h->obj_at_put(index, info_obj); | |
1247 } | |
1248 return 0; | |
1249 JVM_END | |
1250 | |
1251 // Dump thread info for the specified threads. | |
1252 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1253 // for the thread ID specified in the corresponding entry in | |
1254 // the given array of thread IDs; or NULL if the thread does not exist | |
1255 // or has terminated. | |
1256 // | |
1257 // Input parameter: | |
1258 // ids - array of thread IDs; NULL indicates all live threads | |
1259 // locked_monitors - if true, dump locked object monitors | |
1260 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1261 // | |
1262 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1263 ResourceMark rm(THREAD); | |
1264 | |
1265 if (JDK_Version::is_gte_jdk16x_version()) { | |
1266 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1267 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1268 } | |
1269 | |
1270 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1271 int num_threads = (ta != NULL ? ta->length() : 0); | |
1272 typeArrayHandle ids_ah(THREAD, ta); | |
1273 | |
1274 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1275 | |
1276 if (ids_ah() != NULL) { | |
1277 | |
1278 // validate the thread id array | |
1279 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1280 | |
1281 // obtain thread dump of a specific list of threads | |
1282 do_thread_dump(&dump_result, | |
1283 ids_ah, | |
1284 num_threads, | |
1285 -1, /* entire stack */ | |
1286 (locked_monitors ? true : false), /* with locked monitors */ | |
1287 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1288 CHECK_NULL); | |
1289 } else { | |
1290 // obtain thread dump of all threads | |
1291 VM_ThreadDump op(&dump_result, | |
1292 -1, /* entire stack */ | |
1293 (locked_monitors ? true : false), /* with locked monitors */ | |
1294 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1295 VMThread::execute(&op); | |
1296 } | |
1297 | |
1298 int num_snapshots = dump_result.num_snapshots(); | |
1299 | |
1300 // create the result ThreadInfo[] object | |
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1301 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
0 | 1302 instanceKlassHandle ik (THREAD, k); |
1303 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1304 objArrayHandle result_h(THREAD, r); | |
1305 | |
1306 int index = 0; | |
1307 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1308 if (ts->threadObj() == NULL) { | |
1309 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1310 result_h->obj_at_put(index, NULL); | |
1311 continue; | |
1312 } | |
1313 | |
1314 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1315 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1316 | |
1317 // Create Object[] filled with locked monitors | |
1318 // Create int[] filled with the stack depth where a monitor was locked | |
1319 int num_frames = stacktrace->get_stack_depth(); | |
1320 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1321 | |
1322 // Count the total number of locked monitors | |
1323 for (int i = 0; i < num_frames; i++) { | |
1324 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1325 num_locked_monitors += frame->num_locked_monitors(); | |
1326 } | |
1327 | |
1328 objArrayHandle monitors_array; | |
1329 typeArrayHandle depths_array; | |
1330 objArrayHandle synchronizers_array; | |
1331 | |
1332 if (locked_monitors) { | |
1333 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1334 // where the thread locked it | |
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1335 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
0 | 1336 objArrayHandle mh(THREAD, array); |
1337 monitors_array = mh; | |
1338 | |
1339 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1340 typeArrayHandle dh(THREAD, tarray); | |
1341 depths_array = dh; | |
1342 | |
1343 int count = 0; | |
1344 int j = 0; | |
1345 for (int depth = 0; depth < num_frames; depth++) { | |
1346 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1347 int len = frame->num_locked_monitors(); | |
1348 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1349 for (j = 0; j < len; j++) { | |
1350 oop monitor = locked_monitors->at(j); | |
1351 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1352 monitors_array->obj_at_put(count, monitor); | |
1353 depths_array->int_at_put(count, depth); | |
1354 count++; | |
1355 } | |
1356 } | |
1357 | |
1358 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1359 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1360 oop object = jni_locked_monitors->at(j); | |
1361 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1362 monitors_array->obj_at_put(count, object); | |
1363 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1364 depths_array->int_at_put(count, -1); | |
1365 count++; | |
1366 } | |
1367 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1368 } | |
1369 | |
1370 if (locked_synchronizers) { | |
1371 // Create Object[] filled with locked JSR-166 synchronizers | |
1372 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1373 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1374 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1375 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1376 | |
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1377 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
0 | 1378 objArrayHandle sh(THREAD, array); |
1379 synchronizers_array = sh; | |
1380 | |
1381 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1382 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1383 } | |
1384 } | |
1385 | |
1386 // Create java.lang.management.ThreadInfo object | |
1387 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1388 monitors_array, | |
1389 depths_array, | |
1390 synchronizers_array, | |
1391 CHECK_NULL); | |
1392 result_h->obj_at_put(index, info_obj); | |
1393 } | |
1394 | |
1395 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1396 JVM_END | |
1397 | |
1398 // Returns an array of Class objects. | |
1399 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1400 ResourceMark rm(THREAD); | |
1401 | |
1402 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1403 | |
1404 int num_classes = lce.num_loaded_classes(); | |
1142 | 1405 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1406 objArrayHandle classes_ah(THREAD, r); |
1407 | |
1408 for (int i = 0; i < num_classes; i++) { | |
1409 KlassHandle kh = lce.get_klass(i); | |
1410 oop mirror = Klass::cast(kh())->java_mirror(); | |
1411 classes_ah->obj_at_put(i, mirror); | |
1412 } | |
1413 | |
1414 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1415 JVM_END | |
1416 | |
1417 // Reset statistic. Return true if the requested statistic is reset. | |
1418 // Otherwise, return false. | |
1419 // | |
1420 // Input parameters: | |
1421 // obj - specify which instance the statistic associated with to be reset | |
1422 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1423 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1424 // type - the type of statistic to be reset | |
1425 // | |
1426 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1427 ResourceMark rm(THREAD); | |
1428 | |
1429 switch (type) { | |
1430 case JMM_STAT_PEAK_THREAD_COUNT: | |
1431 ThreadService::reset_peak_thread_count(); | |
1432 return true; | |
1433 | |
1434 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1435 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1436 jlong tid = obj.j; | |
1437 if (tid < 0) { | |
1438 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1439 } | |
1440 | |
1441 // Look for the JavaThread of this given tid | |
1442 MutexLockerEx ml(Threads_lock); | |
1443 if (tid == 0) { | |
1444 // reset contention statistics for all threads if tid == 0 | |
1445 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1446 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1447 ThreadService::reset_contention_count_stat(java_thread); | |
1448 } else { | |
1449 ThreadService::reset_contention_time_stat(java_thread); | |
1450 } | |
1451 } | |
1452 } else { | |
1453 // reset contention statistics for a given thread | |
1454 JavaThread* java_thread = find_java_thread_from_id(tid); | |
1455 if (java_thread == NULL) { | |
1456 return false; | |
1457 } | |
1458 | |
1459 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1460 ThreadService::reset_contention_count_stat(java_thread); | |
1461 } else { | |
1462 ThreadService::reset_contention_time_stat(java_thread); | |
1463 } | |
1464 } | |
1465 return true; | |
1466 break; | |
1467 } | |
1468 case JMM_STAT_PEAK_POOL_USAGE: { | |
1469 jobject o = obj.l; | |
1470 if (o == NULL) { | |
1471 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1472 } | |
1473 | |
1474 oop pool_obj = JNIHandles::resolve(o); | |
1475 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1476 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1477 | |
1478 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1479 if (pool != NULL) { | |
1480 pool->reset_peak_memory_usage(); | |
1481 return true; | |
1482 } | |
1483 break; | |
1484 } | |
1485 case JMM_STAT_GC_STAT: { | |
1486 jobject o = obj.l; | |
1487 if (o == NULL) { | |
1488 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1489 } | |
1490 | |
1491 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1492 if (mgr != NULL) { | |
1493 mgr->reset_gc_stat(); | |
1494 return true; | |
1495 } | |
1496 break; | |
1497 } | |
1498 default: | |
1499 assert(0, "Unknown Statistic Type"); | |
1500 } | |
1501 return false; | |
1502 JVM_END | |
1503 | |
1504 // Returns the fast estimate of CPU time consumed by | |
1505 // a given thread (in nanoseconds). | |
1506 // If thread_id == 0, return CPU time for the current thread. | |
1507 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1508 if (!os::is_thread_cpu_time_supported()) { | |
1509 return -1; | |
1510 } | |
1511 | |
1512 if (thread_id < 0) { | |
1513 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1514 "Invalid thread ID", -1); | |
1515 } | |
1516 | |
1517 JavaThread* java_thread = NULL; | |
1518 if (thread_id == 0) { | |
1519 // current thread | |
1520 return os::current_thread_cpu_time(); | |
1521 } else { | |
1522 MutexLockerEx ml(Threads_lock); | |
1523 java_thread = find_java_thread_from_id(thread_id); | |
1524 if (java_thread != NULL) { | |
1525 return os::thread_cpu_time((Thread*) java_thread); | |
1526 } | |
1527 } | |
1528 return -1; | |
1529 JVM_END | |
1530 | |
1531 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
1532 // If thread_id == 0, CPU time for the current thread is returned. | |
1533 // If user_sys_cpu_time = true, user level and system CPU time of | |
1534 // a given thread is returned; otherwise, only user level CPU time | |
1535 // is returned. | |
1536 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
1537 if (!os::is_thread_cpu_time_supported()) { | |
1538 return -1; | |
1539 } | |
1540 | |
1541 if (thread_id < 0) { | |
1542 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1543 "Invalid thread ID", -1); | |
1544 } | |
1545 | |
1546 JavaThread* java_thread = NULL; | |
1547 if (thread_id == 0) { | |
1548 // current thread | |
1549 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
1550 } else { | |
1551 MutexLockerEx ml(Threads_lock); | |
1552 java_thread = find_java_thread_from_id(thread_id); | |
1553 if (java_thread != NULL) { | |
1554 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
1555 } | |
1556 } | |
1557 return -1; | |
1558 JVM_END | |
1559 | |
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1560 // Gets an array containing the CPU times consumed by a set of threads |
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1561 // (in nanoseconds). Each element of the array is the CPU time for the |
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1562 // thread ID specified in the corresponding entry in the given array |
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1563 // of thread IDs; or -1 if the thread does not exist or has terminated. |
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1564 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
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1565 // for the given thread is returned; otherwise, only user level CPU time |
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1566 // is returned. |
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1567 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
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1568 jlongArray timeArray, |
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1569 jboolean user_sys_cpu_time)) |
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1570 // Check if threads is null |
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1571 if (ids == NULL || timeArray == NULL) { |
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1572 THROW(vmSymbols::java_lang_NullPointerException()); |
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1573 } |
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1574 |
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1575 ResourceMark rm(THREAD); |
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1576 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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1577 typeArrayHandle ids_ah(THREAD, ta); |
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1578 |
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1579 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
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1580 typeArrayHandle timeArray_h(THREAD, tia); |
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1581 |
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1582 // validate the thread id array |
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1583 validate_thread_id_array(ids_ah, CHECK); |
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1584 |
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1585 // timeArray must be of the same length as the given array of thread IDs |
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1586 int num_threads = ids_ah->length(); |
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1587 if (num_threads != timeArray_h->length()) { |
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1588 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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1589 "The length of the given long array does not match the length of " |
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1590 "the given array of thread IDs"); |
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1591 } |
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1592 |
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1593 MutexLockerEx ml(Threads_lock); |
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1594 for (int i = 0; i < num_threads; i++) { |
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1595 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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1596 if (java_thread != NULL) { |
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1597 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
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1598 user_sys_cpu_time != 0)); |
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1599 } |
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1600 } |
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1601 JVM_END |
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|
1602 |
0 | 1603 // Returns a String array of all VM global flag names |
1604 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1605 // last flag entry is always NULL, so subtract 1 | |
1606 int nFlags = (int) Flag::numFlags - 1; | |
1607 // allocate a temp array | |
1142 | 1608 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1609 nFlags, CHECK_0); |
1610 objArrayHandle flags_ah(THREAD, r); | |
1611 int num_entries = 0; | |
1612 for (int i = 0; i < nFlags; i++) { | |
1613 Flag* flag = &Flag::flags[i]; | |
350 | 1614 // Exclude the locked (experimental, diagnostic) flags |
0 | 1615 if (flag->is_unlocked() || flag->is_unlocker()) { |
1616 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
1617 flags_ah->obj_at_put(num_entries, s()); | |
1618 num_entries++; | |
1619 } | |
1620 } | |
1621 | |
1622 if (num_entries < nFlags) { | |
1623 // Return array of right length | |
1142 | 1624 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1625 for(int i = 0; i < num_entries; i++) { |
1626 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1627 } | |
1628 return (jobjectArray)JNIHandles::make_local(env, res); | |
1629 } | |
1630 | |
1631 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1632 JVM_END | |
1633 | |
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1634 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1635 // can't be determined, true otherwise. If false is returned, then *global |
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1636 // will be incomplete and invalid. |
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1637 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1638 Handle flag_name; |
1639 if (name() == NULL) { | |
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1640 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
0 | 1641 } else { |
1642 flag_name = name; | |
1643 } | |
1644 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1645 | |
1646 if (flag->is_bool()) { | |
1647 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1648 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1649 } else if (flag->is_intx()) { | |
1650 global->value.j = (jlong)flag->get_intx(); | |
1651 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1652 } else if (flag->is_uintx()) { | |
1653 global->value.j = (jlong)flag->get_uintx(); | |
1654 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1655 } else if (flag->is_uint64_t()) { |
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1656 global->value.j = (jlong)flag->get_uint64_t(); |
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1657 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1658 } else if (flag->is_ccstr()) { |
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1659 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1660 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1661 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1662 } else { |
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1663 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1664 return false; |
0 | 1665 } |
1666 | |
1667 global->writeable = flag->is_writeable(); | |
1668 global->external = flag->is_external(); | |
1669 switch (flag->origin) { | |
1670 case DEFAULT: | |
1671 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
1672 break; | |
1673 case COMMAND_LINE: | |
1674 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
1675 break; | |
1676 case ENVIRON_VAR: | |
1677 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
1678 break; | |
1679 case CONFIG_FILE: | |
1680 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
1681 break; | |
1682 case MANAGEMENT: | |
1683 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
1684 break; | |
1685 case ERGONOMIC: | |
1686 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
1687 break; | |
1688 default: | |
1689 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1690 } | |
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1691 |
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1692 return true; |
0 | 1693 } |
1694 | |
1695 // Fill globals array of count length with jmmVMGlobal entries | |
1696 // specified by names. If names == NULL, fill globals array | |
1697 // with all Flags. Return value is number of entries | |
1698 // created in globals. | |
1699 // If a Flag with a given name in an array element does not | |
1700 // exist, globals[i].name will be set to NULL. | |
1701 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1702 jobjectArray names, | |
1703 jmmVMGlobal *globals, | |
1704 jint count)) | |
1705 | |
1706 | |
1707 if (globals == NULL) { | |
1708 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1709 } | |
1710 | |
1711 ResourceMark rm(THREAD); | |
1712 | |
1713 if (names != NULL) { | |
1714 // return the requested globals | |
1715 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1716 objArrayHandle names_ah(THREAD, ta); | |
1717 // Make sure we have a String array | |
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1718 Klass* element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); |
1142 | 1719 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1720 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1721 "Array element type is not String class", 0); | |
1722 } | |
1723 | |
1724 int names_length = names_ah->length(); | |
1725 int num_entries = 0; | |
1726 for (int i = 0; i < names_length && i < count; i++) { | |
1727 oop s = names_ah->obj_at(i); | |
1728 if (s == NULL) { | |
1729 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1730 } | |
1731 | |
1732 Handle sh(THREAD, s); | |
1733 char* str = java_lang_String::as_utf8_string(s); | |
1734 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1735 if (flag != NULL && |
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1736 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1737 num_entries++; |
1738 } else { | |
1739 globals[i].name = NULL; | |
1740 } | |
1741 } | |
1742 return num_entries; | |
1743 } else { | |
1744 // return all globals if names == NULL | |
1745 | |
1746 // last flag entry is always NULL, so subtract 1 | |
1747 int nFlags = (int) Flag::numFlags - 1; | |
1748 Handle null_h; | |
1749 int num_entries = 0; | |
1750 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1751 Flag* flag = &Flag::flags[i]; | |
350 | 1752 // Exclude the locked (diagnostic, experimental) flags |
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1753 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1754 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1755 num_entries++; |
1756 } | |
1757 } | |
1758 return num_entries; | |
1759 } | |
1760 JVM_END | |
1761 | |
1762 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1763 ResourceMark rm(THREAD); | |
1764 | |
1765 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1766 if (fn == NULL) { | |
1767 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1768 "The flag name cannot be null."); | |
1769 } | |
1770 char* name = java_lang_String::as_utf8_string(fn); | |
1771 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1772 if (flag == NULL) { | |
1773 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1774 "Flag does not exist."); | |
1775 } | |
1776 if (!flag->is_writeable()) { | |
1777 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1778 "This flag is not writeable."); | |
1779 } | |
1780 | |
1781 bool succeed; | |
1782 if (flag->is_bool()) { | |
1783 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
1784 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
1785 } else if (flag->is_intx()) { | |
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1786 intx ivalue = (intx)new_value.j; |
0 | 1787 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
1788 } else if (flag->is_uintx()) { | |
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1789 uintx uvalue = (uintx)new_value.j; |
0 | 1790 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1791 } else if (flag->is_uint64_t()) { |
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1792 uint64_t uvalue = (uint64_t)new_value.j; |
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1793 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
0 | 1794 } else if (flag->is_ccstr()) { |
1795 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1796 if (str == NULL) { | |
1797 THROW(vmSymbols::java_lang_NullPointerException()); | |
1798 } | |
1799 ccstr svalue = java_lang_String::as_utf8_string(str); | |
1800 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
1801 } | |
1802 assert(succeed, "Setting flag should succeed"); | |
1803 JVM_END | |
1804 | |
1805 class ThreadTimesClosure: public ThreadClosure { | |
1806 private: | |
1807 objArrayOop _names; | |
1808 typeArrayOop _times; | |
1809 int _names_len; | |
1810 int _times_len; | |
1811 int _count; | |
1812 | |
1813 public: | |
1814 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
1815 virtual void do_thread(Thread* thread); | |
1816 int count() { return _count; } | |
1817 }; | |
1818 | |
1819 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
1820 typeArrayOop times) { | |
1821 assert(names != NULL, "names was NULL"); | |
1822 assert(times != NULL, "times was NULL"); | |
1823 _names = names; | |
1824 _names_len = names->length(); | |
1825 _times = times; | |
1826 _times_len = times->length(); | |
1827 _count = 0; | |
1828 } | |
1829 | |
1830 void ThreadTimesClosure::do_thread(Thread* thread) { | |
1831 Handle s; | |
1832 assert(thread != NULL, "thread was NULL"); | |
1833 | |
1834 // exclude externally visible JavaThreads | |
1835 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1836 return; | |
1837 } | |
1838 | |
1839 if (_count >= _names_len || _count >= _times_len) { | |
1840 // skip if the result array is not big enough | |
1841 return; | |
1842 } | |
1843 | |
1844 EXCEPTION_MARK; | |
1845 | |
1846 assert(thread->name() != NULL, "All threads should have a name"); | |
1847 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
1848 _names->obj_at_put(_count, s()); | |
1849 | |
1850 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
1851 os::thread_cpu_time(thread) : -1); | |
1852 _count++; | |
1853 } | |
1854 | |
1855 // Fills names with VM internal thread names and times with the corresponding | |
1856 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1857 // If the element type of names is not String, an IllegalArgumentException is | |
1858 // thrown. | |
1859 // If an array is not large enough to hold all the entries, only the entries | |
1860 // that fit will be returned. Return value is the number of VM internal | |
1861 // threads entries. | |
1862 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1863 jobjectArray names, | |
1864 jlongArray times)) | |
1865 if (names == NULL || times == NULL) { | |
1866 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1867 } | |
1868 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1869 objArrayHandle names_ah(THREAD, na); | |
1870 | |
1871 // Make sure we have a String array | |
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1872 Klass* element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); |
1142 | 1873 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1874 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1875 "Array element type is not String class", 0); | |
1876 } | |
1877 | |
1878 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1879 typeArrayHandle times_ah(THREAD, ta); | |
1880 | |
1881 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
1882 { | |
1883 MutexLockerEx ml(Threads_lock); | |
1884 Threads::threads_do(&ttc); | |
1885 } | |
1886 | |
1887 return ttc.count(); | |
1888 JVM_END | |
1889 | |
1890 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1891 ResourceMark rm(THREAD); | |
1892 | |
1893 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1894 VMThread::execute(&op); | |
1895 | |
1896 DeadlockCycle* deadlocks = op.result(); | |
1897 if (deadlocks == NULL) { | |
1898 // no deadlock found and return | |
1899 return Handle(); | |
1900 } | |
1901 | |
1902 int num_threads = 0; | |
1903 DeadlockCycle* cycle; | |
1904 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1905 num_threads += cycle->num_threads(); | |
1906 } | |
1907 | |
1142 | 1908 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1909 objArrayHandle threads_ah(THREAD, r); |
1910 | |
1911 int index = 0; | |
1912 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1913 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1914 int len = deadlock_threads->length(); | |
1915 for (int i = 0; i < len; i++) { | |
1916 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1917 index++; | |
1918 } | |
1919 } | |
1920 return threads_ah; | |
1921 } | |
1922 | |
1923 // Finds cycles of threads that are deadlocked involved in object monitors | |
1924 // and JSR-166 synchronizers. | |
1925 // Returns an array of Thread objects which are in deadlock, if any. | |
1926 // Otherwise, returns NULL. | |
1927 // | |
1928 // Input parameter: | |
1929 // object_monitors_only - if true, only check object monitors | |
1930 // | |
1931 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1932 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1933 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1934 JVM_END | |
1935 | |
1936 // Finds cycles of threads that are deadlocked on monitor locks | |
1937 // Returns an array of Thread objects which are in deadlock, if any. | |
1938 // Otherwise, returns NULL. | |
1939 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1940 Handle result = find_deadlocks(true, CHECK_0); | |
1941 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1942 JVM_END | |
1943 | |
1944 // Gets the information about GC extension attributes including | |
1945 // the name of the attribute, its type, and a short description. | |
1946 // | |
1947 // Input parameters: | |
1948 // mgr - GC memory manager | |
1949 // info - caller allocated array of jmmExtAttributeInfo | |
1950 // count - number of elements of the info array | |
1951 // | |
1952 // Returns the number of GC extension attributes filled in the info array; or | |
1953 // -1 if info is not big enough | |
1954 // | |
1955 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1956 // All GC memory managers have 1 attribute (number of GC threads) | |
1957 if (count == 0) { | |
1958 return 0; | |
1959 } | |
1960 | |
1961 if (info == NULL) { | |
1962 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1963 } | |
1964 | |
1965 info[0].name = "GcThreadCount"; | |
1966 info[0].type = 'I'; | |
1967 info[0].description = "Number of GC threads"; | |
1968 return 1; | |
1969 JVM_END | |
1970 | |
1971 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1972 // of a given length and return the objArrayOop | |
1973 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1974 if (array == NULL) { | |
1975 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1976 } | |
1977 | |
1978 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1979 objArrayHandle array_h(THREAD, oa); | |
1980 | |
1981 // array must be of the given length | |
1982 if (length != array_h->length()) { | |
1983 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1984 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
1985 } | |
1986 | |
1987 // check if the element of array is of type MemoryUsage class | |
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1988 Klass* usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); |
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1989 Klass* element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); |
0 | 1990 if (element_klass != usage_klass) { |
1991 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1992 "The element type is not MemoryUsage class", 0); | |
1993 } | |
1994 | |
1995 return array_h(); | |
1996 } | |
1997 | |
1998 // Gets the statistics of the last GC of a given GC memory manager. | |
1999 // Input parameters: | |
2000 // obj - GarbageCollectorMXBean object | |
2001 // gc_stat - caller allocated jmmGCStat where: | |
2002 // a. before_gc_usage - array of MemoryUsage objects | |
2003 // b. after_gc_usage - array of MemoryUsage objects | |
2004 // c. gc_ext_attributes_values_size is set to the | |
2005 // gc_ext_attribute_values array allocated | |
2006 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
2007 // | |
2008 // On return, | |
2009 // gc_index == 0 indicates no GC statistics available | |
2010 // | |
2011 // before_gc_usage and after_gc_usage - filled with per memory pool | |
2012 // before and after GC usage in the same order as the memory pools | |
2013 // returned by GetMemoryPools for a given GC memory manager. | |
2014 // num_gc_ext_attributes indicates the number of elements in | |
2015 // the gc_ext_attribute_values array is filled; or | |
2016 // -1 if the gc_ext_attributes_values array is not big enough | |
2017 // | |
2018 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
2019 ResourceMark rm(THREAD); | |
2020 | |
2021 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
2022 THROW(vmSymbols::java_lang_NullPointerException()); | |
2023 } | |
2024 | |
2025 // Get the GCMemoryManager | |
2026 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
2027 | |
2028 // Make a copy of the last GC statistics | |
2029 // GC may occur while constructing the last GC information | |
2030 int num_pools = MemoryService::num_memory_pools(); | |
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2031 GCStatInfo stat(num_pools); |
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2032 if (mgr->get_last_gc_stat(&stat) == 0) { |
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2033 gc_stat->gc_index = 0; |
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2034 return; |
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2035 } |
0 | 2036 |
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2037 gc_stat->gc_index = stat.gc_index(); |
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2038 gc_stat->start_time = Management::ticks_to_ms(stat.start_time()); |
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2039 gc_stat->end_time = Management::ticks_to_ms(stat.end_time()); |
0 | 2040 |
2041 // Current implementation does not have GC extension attributes | |
2042 gc_stat->num_gc_ext_attributes = 0; | |
2043 | |
2044 // Fill the arrays of MemoryUsage objects with before and after GC | |
2045 // per pool memory usage | |
2046 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2047 num_pools, | |
2048 CHECK); | |
2049 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2050 | |
2051 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2052 num_pools, | |
2053 CHECK); | |
2054 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2055 | |
2056 for (int i = 0; i < num_pools; i++) { | |
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2057 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK); |
0 | 2058 Handle after_usage; |
2059 | |
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2060 MemoryUsage u = stat.after_gc_usage_for_pool(i); |
0 | 2061 if (u.max_size() == 0 && u.used() > 0) { |
2062 // If max size == 0, this pool is a survivor space. | |
2063 // Set max size = -1 since the pools will be swapped after GC. | |
2064 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2065 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2066 } else { | |
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2067 after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK); |
0 | 2068 } |
2069 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2070 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2071 } | |
2072 | |
2073 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2074 // Current implementation only has 1 attribute (number of GC threads) | |
2075 // The type is 'I' | |
2076 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2077 } | |
2078 JVM_END | |
2079 | |
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2080 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) |
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2081 ResourceMark rm(THREAD); |
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2082 // Get the GCMemoryManager |
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2083 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
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2084 mgr->set_notification_enabled(enabled?true:false); |
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2085 JVM_END |
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2086 |
0 | 2087 // Dump heap - Returns 0 if succeeds. |
2088 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
2089 #ifndef SERVICES_KERNEL | |
2090 ResourceMark rm(THREAD); | |
2091 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2092 if (on == NULL) { | |
2093 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2094 "Output file name cannot be null.", -1); | |
2095 } | |
2096 char* name = java_lang_String::as_utf8_string(on); | |
2097 if (name == NULL) { | |
2098 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2099 "Output file name cannot be null.", -1); | |
2100 } | |
2101 HeapDumper dumper(live ? true : false); | |
2102 if (dumper.dump(name) != 0) { | |
2103 const char* errmsg = dumper.error_as_C_string(); | |
2104 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2105 } | |
2106 return 0; | |
2107 #else // SERVICES_KERNEL | |
2108 return -1; | |
2109 #endif // SERVICES_KERNEL | |
2110 JVM_END | |
2111 | |
4133 | 2112 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env)) |
2113 ResourceMark rm(THREAD); | |
2114 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(); | |
2115 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(), | |
2116 dcmd_list->length(), CHECK_NULL); | |
2117 objArrayHandle cmd_array(THREAD, cmd_array_oop); | |
2118 for (int i = 0; i < dcmd_list->length(); i++) { | |
2119 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL); | |
2120 cmd_array->obj_at_put(i, cmd_name); | |
2121 } | |
2122 return (jobjectArray) JNIHandles::make_local(env, cmd_array()); | |
2123 JVM_END | |
2124 | |
2125 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds, | |
2126 dcmdInfo* infoArray)) | |
2127 if (cmds == NULL || infoArray == NULL) { | |
2128 THROW(vmSymbols::java_lang_NullPointerException()); | |
2129 } | |
2130 | |
2131 ResourceMark rm(THREAD); | |
2132 | |
2133 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds)); | |
2134 objArrayHandle cmds_ah(THREAD, ca); | |
2135 | |
2136 // Make sure we have a String array | |
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2137 Klass* element_klass = objArrayKlass::cast(cmds_ah->klass())->element_klass(); |
4133 | 2138 if (element_klass != SystemDictionary::String_klass()) { |
2139 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2140 "Array element type is not String class"); | |
2141 } | |
2142 | |
2143 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(); | |
2144 | |
2145 int num_cmds = cmds_ah->length(); | |
2146 for (int i = 0; i < num_cmds; i++) { | |
2147 oop cmd = cmds_ah->obj_at(i); | |
2148 if (cmd == NULL) { | |
2149 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2150 "Command name cannot be null."); | |
2151 } | |
2152 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2153 if (cmd_name == NULL) { | |
2154 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2155 "Command name cannot be null."); | |
2156 } | |
2157 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name); | |
2158 if (pos == -1) { | |
2159 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2160 "Unknown diagnostic command"); | |
2161 } | |
2162 DCmdInfo* info = info_list->at(pos); | |
2163 infoArray[i].name = info->name(); | |
2164 infoArray[i].description = info->description(); | |
2165 infoArray[i].impact = info->impact(); | |
2166 infoArray[i].num_arguments = info->num_arguments(); | |
2167 infoArray[i].enabled = info->is_enabled(); | |
2168 } | |
2169 JVM_END | |
2170 | |
2171 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env, | |
2172 jstring command, dcmdArgInfo* infoArray)) | |
2173 ResourceMark rm(THREAD); | |
2174 oop cmd = JNIHandles::resolve_external_guard(command); | |
2175 if (cmd == NULL) { | |
2176 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2177 "Command line cannot be null."); | |
2178 } | |
2179 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2180 if (cmd_name == NULL) { | |
2181 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2182 "Command line content cannot be null."); | |
2183 } | |
2184 DCmd* dcmd = NULL; | |
2185 DCmdFactory*factory = DCmdFactory::factory(cmd_name, strlen(cmd_name)); | |
2186 if (factory != NULL) { | |
2187 dcmd = factory->create_resource_instance(NULL); | |
2188 } | |
2189 if (dcmd == NULL) { | |
2190 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2191 "Unknown diagnostic command"); | |
2192 } | |
2193 DCmdMark mark(dcmd); | |
2194 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array(); | |
2195 if (array->length() == 0) { | |
2196 return; | |
2197 } | |
2198 for (int i = 0; i < array->length(); i++) { | |
2199 infoArray[i].name = array->at(i)->name(); | |
2200 infoArray[i].description = array->at(i)->description(); | |
2201 infoArray[i].type = array->at(i)->type(); | |
2202 infoArray[i].default_string = array->at(i)->default_string(); | |
2203 infoArray[i].mandatory = array->at(i)->is_mandatory(); | |
2204 infoArray[i].option = array->at(i)->is_option(); | |
2205 infoArray[i].position = array->at(i)->position(); | |
2206 } | |
2207 return; | |
2208 JVM_END | |
2209 | |
2210 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline)) | |
2211 ResourceMark rm(THREAD); | |
2212 oop cmd = JNIHandles::resolve_external_guard(commandline); | |
2213 if (cmd == NULL) { | |
2214 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2215 "Command line cannot be null."); | |
2216 } | |
2217 char* cmdline = java_lang_String::as_utf8_string(cmd); | |
2218 if (cmdline == NULL) { | |
2219 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2220 "Command line content cannot be null."); | |
2221 } | |
2222 bufferedStream output; | |
2223 DCmd::parse_and_execute(&output, cmdline, ' ', CHECK_NULL); | |
2224 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL); | |
2225 return (jstring) JNIHandles::make_local(env, result); | |
2226 JVM_END | |
2227 | |
0 | 2228 jlong Management::ticks_to_ms(jlong ticks) { |
2229 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2230 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2231 * (double)1000.0); | |
2232 } | |
2233 | |
2234 const struct jmmInterface_1_ jmm_interface = { | |
2235 NULL, | |
2236 NULL, | |
2237 jmm_GetVersion, | |
2238 jmm_GetOptionalSupport, | |
2239 jmm_GetInputArguments, | |
2240 jmm_GetThreadInfo, | |
2241 jmm_GetInputArgumentArray, | |
2242 jmm_GetMemoryPools, | |
2243 jmm_GetMemoryManagers, | |
2244 jmm_GetMemoryPoolUsage, | |
2245 jmm_GetPeakMemoryPoolUsage, | |
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2246 jmm_GetThreadAllocatedMemory, |
0 | 2247 jmm_GetMemoryUsage, |
2248 jmm_GetLongAttribute, | |
2249 jmm_GetBoolAttribute, | |
2250 jmm_SetBoolAttribute, | |
2251 jmm_GetLongAttributes, | |
2252 jmm_FindMonitorDeadlockedThreads, | |
2253 jmm_GetThreadCpuTime, | |
2254 jmm_GetVMGlobalNames, | |
2255 jmm_GetVMGlobals, | |
2256 jmm_GetInternalThreadTimes, | |
2257 jmm_ResetStatistic, | |
2258 jmm_SetPoolSensor, | |
2259 jmm_SetPoolThreshold, | |
2260 jmm_GetPoolCollectionUsage, | |
2261 jmm_GetGCExtAttributeInfo, | |
2262 jmm_GetLastGCStat, | |
2263 jmm_GetThreadCpuTimeWithKind, | |
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2264 jmm_GetThreadCpuTimesWithKind, |
0 | 2265 jmm_DumpHeap0, |
2266 jmm_FindDeadlockedThreads, | |
2267 jmm_SetVMGlobal, | |
2268 NULL, | |
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2269 jmm_DumpThreads, |
4133 | 2270 jmm_SetGCNotificationEnabled, |
2271 jmm_GetDiagnosticCommands, | |
2272 jmm_GetDiagnosticCommandInfo, | |
2273 jmm_GetDiagnosticCommandArgumentsInfo, | |
2274 jmm_ExecuteDiagnosticCommand | |
0 | 2275 }; |
2276 | |
2277 void* Management::get_jmm_interface(int version) { | |
2278 if (version == JMM_VERSION_1_0) { | |
2279 return (void*) &jmm_interface; | |
2280 } | |
2281 return NULL; | |
2282 } |