Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 3109:3664989976e2
Merge
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
---|---|
date | Fri, 01 Jul 2011 12:57:10 +0200 |
parents | 02f78cfa4656 |
children | 78542e2b5e35 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "compiler/compileBroker.hpp" | |
28 #include "memory/iterator.hpp" | |
29 #include "memory/oopFactory.hpp" | |
30 #include "memory/resourceArea.hpp" | |
31 #include "oops/klass.hpp" | |
32 #include "oops/klassOop.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/oop.inline.hpp" | |
35 #include "runtime/arguments.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
37 #include "runtime/interfaceSupport.hpp" | |
38 #include "runtime/javaCalls.hpp" | |
39 #include "runtime/jniHandles.hpp" | |
40 #include "runtime/os.hpp" | |
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41 #include "runtime/serviceThread.hpp" |
1972 | 42 #include "services/classLoadingService.hpp" |
43 #include "services/heapDumper.hpp" | |
44 #include "services/lowMemoryDetector.hpp" | |
45 #include "services/management.hpp" | |
46 #include "services/memoryManager.hpp" | |
47 #include "services/memoryPool.hpp" | |
48 #include "services/memoryService.hpp" | |
49 #include "services/runtimeService.hpp" | |
50 #include "services/threadService.hpp" | |
0 | 51 |
52 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
53 PerfVariable* Management::_end_vm_creation_time = NULL; | |
54 PerfVariable* Management::_vm_init_done_time = NULL; | |
55 | |
56 klassOop Management::_sensor_klass = NULL; | |
57 klassOop Management::_threadInfo_klass = NULL; | |
58 klassOop Management::_memoryUsage_klass = NULL; | |
59 klassOop Management::_memoryPoolMXBean_klass = NULL; | |
60 klassOop Management::_memoryManagerMXBean_klass = NULL; | |
61 klassOop Management::_garbageCollectorMXBean_klass = NULL; | |
62 klassOop Management::_managementFactory_klass = NULL; | |
63 | |
64 jmmOptionalSupport Management::_optional_support = {0}; | |
65 TimeStamp Management::_stamp; | |
66 | |
67 void management_init() { | |
68 Management::init(); | |
69 ThreadService::init(); | |
70 RuntimeService::init(); | |
71 ClassLoadingService::init(); | |
72 } | |
73 | |
74 void Management::init() { | |
75 EXCEPTION_MARK; | |
76 | |
77 // These counters are for java.lang.management API support. | |
78 // They are created even if -XX:-UsePerfData is set and in | |
79 // that case, they will be allocated on C heap. | |
80 | |
81 _begin_vm_creation_time = | |
82 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
83 PerfData::U_None, CHECK); | |
84 | |
85 _end_vm_creation_time = | |
86 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
87 PerfData::U_None, CHECK); | |
88 | |
89 _vm_init_done_time = | |
90 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
91 PerfData::U_None, CHECK); | |
92 | |
93 // Initialize optional support | |
94 _optional_support.isLowMemoryDetectionSupported = 1; | |
95 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
96 _optional_support.isThreadContentionMonitoringSupported = 1; | |
97 | |
98 if (os::is_thread_cpu_time_supported()) { | |
99 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
100 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
101 } else { | |
102 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
103 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
104 } | |
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105 |
0 | 106 _optional_support.isBootClassPathSupported = 1; |
107 _optional_support.isObjectMonitorUsageSupported = 1; | |
108 #ifndef SERVICES_KERNEL | |
109 // This depends on the heap inspector | |
110 _optional_support.isSynchronizerUsageSupported = 1; | |
111 #endif // SERVICES_KERNEL | |
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112 _optional_support.isThreadAllocatedMemorySupported = 1; |
0 | 113 } |
114 | |
115 void Management::initialize(TRAPS) { | |
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116 // Start the service thread |
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117 ServiceThread::initialize(); |
0 | 118 |
119 if (ManagementServer) { | |
120 ResourceMark rm(THREAD); | |
121 HandleMark hm(THREAD); | |
122 | |
123 // Load and initialize the sun.management.Agent class | |
124 // invoke startAgent method to start the management server | |
125 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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126 klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 127 loader, |
128 Handle(), | |
129 true, | |
130 CHECK); | |
131 instanceKlassHandle ik (THREAD, k); | |
132 | |
133 JavaValue result(T_VOID); | |
134 JavaCalls::call_static(&result, | |
135 ik, | |
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136 vmSymbols::startAgent_name(), |
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137 vmSymbols::void_method_signature(), |
0 | 138 CHECK); |
139 } | |
140 } | |
141 | |
142 void Management::get_optional_support(jmmOptionalSupport* support) { | |
143 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
144 } | |
145 | |
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146 klassOop Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
0 | 147 klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
148 instanceKlassHandle ik (THREAD, k); | |
149 if (ik->should_be_initialized()) { | |
150 ik->initialize(CHECK_NULL); | |
151 } | |
152 return ik(); | |
153 } | |
154 | |
155 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
156 // if the performance counter is not initialized, | |
157 // then vm initialization failed; simply return. | |
158 if (_begin_vm_creation_time == NULL) return; | |
159 | |
160 _begin_vm_creation_time->set_value(begin); | |
161 _end_vm_creation_time->set_value(begin + duration); | |
162 PerfMemory::set_accessible(true); | |
163 } | |
164 | |
165 jlong Management::timestamp() { | |
166 TimeStamp t; | |
167 t.update(); | |
168 return t.ticks() - _stamp.ticks(); | |
169 } | |
170 | |
171 void Management::oops_do(OopClosure* f) { | |
172 MemoryService::oops_do(f); | |
173 ThreadService::oops_do(f); | |
174 | |
175 f->do_oop((oop*) &_sensor_klass); | |
176 f->do_oop((oop*) &_threadInfo_klass); | |
177 f->do_oop((oop*) &_memoryUsage_klass); | |
178 f->do_oop((oop*) &_memoryPoolMXBean_klass); | |
179 f->do_oop((oop*) &_memoryManagerMXBean_klass); | |
180 f->do_oop((oop*) &_garbageCollectorMXBean_klass); | |
181 f->do_oop((oop*) &_managementFactory_klass); | |
182 } | |
183 | |
184 klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { | |
185 if (_threadInfo_klass == NULL) { | |
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186 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 187 } |
188 return _threadInfo_klass; | |
189 } | |
190 | |
191 klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { | |
192 if (_memoryUsage_klass == NULL) { | |
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193 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 194 } |
195 return _memoryUsage_klass; | |
196 } | |
197 | |
198 klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { | |
199 if (_memoryPoolMXBean_klass == NULL) { | |
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200 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 201 } |
202 return _memoryPoolMXBean_klass; | |
203 } | |
204 | |
205 klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { | |
206 if (_memoryManagerMXBean_klass == NULL) { | |
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207 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 208 } |
209 return _memoryManagerMXBean_klass; | |
210 } | |
211 | |
212 klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { | |
213 if (_garbageCollectorMXBean_klass == NULL) { | |
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214 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 215 } |
216 return _garbageCollectorMXBean_klass; | |
217 } | |
218 | |
219 klassOop Management::sun_management_Sensor_klass(TRAPS) { | |
220 if (_sensor_klass == NULL) { | |
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221 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 222 } |
223 return _sensor_klass; | |
224 } | |
225 | |
226 klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { | |
227 if (_managementFactory_klass == NULL) { | |
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228 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 229 } |
230 return _managementFactory_klass; | |
231 } | |
232 | |
233 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { | |
234 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
235 | |
236 jlong contended_time; | |
237 jlong waited_time; | |
238 if (ThreadService::is_thread_monitoring_contention()) { | |
239 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
240 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
241 } else { | |
242 // set them to -1 if thread contention monitoring is disabled. | |
243 contended_time = max_julong; | |
244 waited_time = max_julong; | |
245 } | |
246 | |
247 int thread_status = snapshot->thread_status(); | |
248 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
249 if (snapshot->is_ext_suspended()) { | |
250 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
251 } | |
252 if (snapshot->is_in_native()) { | |
253 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
254 } | |
255 | |
256 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
257 Handle stacktrace_h; | |
258 if (st != NULL) { | |
259 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
260 } else { | |
261 stacktrace_h = Handle(); | |
262 } | |
263 | |
264 args->push_oop(snapshot_thread); | |
265 args->push_int(thread_status); | |
266 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
267 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
268 args->push_long(snapshot->contended_enter_count()); | |
269 args->push_long(contended_time); | |
270 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
271 args->push_long(waited_time); | |
272 args->push_oop(stacktrace_h); | |
273 } | |
274 | |
275 // Helper function to construct a ThreadInfo object | |
276 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
277 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
278 instanceKlassHandle ik (THREAD, k); | |
279 | |
280 JavaValue result(T_VOID); | |
281 JavaCallArguments args(14); | |
282 | |
283 // First allocate a ThreadObj object and | |
284 // push the receiver as the first argument | |
285 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
286 args.push_oop(element); | |
287 | |
288 // initialize the arguments for the ThreadInfo constructor | |
289 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
290 | |
291 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
292 JavaCalls::call_special(&result, | |
293 ik, | |
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294 vmSymbols::object_initializer_name(), |
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295 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 296 &args, |
297 CHECK_NULL); | |
298 | |
299 return (instanceOop) element(); | |
300 } | |
301 | |
302 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
303 objArrayHandle monitors_array, | |
304 typeArrayHandle depths_array, | |
305 objArrayHandle synchronizers_array, | |
306 TRAPS) { | |
307 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
308 instanceKlassHandle ik (THREAD, k); | |
309 | |
310 JavaValue result(T_VOID); | |
311 JavaCallArguments args(17); | |
312 | |
313 // First allocate a ThreadObj object and | |
314 // push the receiver as the first argument | |
315 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
316 args.push_oop(element); | |
317 | |
318 // initialize the arguments for the ThreadInfo constructor | |
319 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
320 | |
321 // push the locked monitors and synchronizers in the arguments | |
322 args.push_oop(monitors_array); | |
323 args.push_oop(depths_array); | |
324 args.push_oop(synchronizers_array); | |
325 | |
326 // Call ThreadInfo constructor with locked monitors and synchronizers | |
327 JavaCalls::call_special(&result, | |
328 ik, | |
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329 vmSymbols::object_initializer_name(), |
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330 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 331 &args, |
332 CHECK_NULL); | |
333 | |
334 return (instanceOop) element(); | |
335 } | |
336 | |
337 // Helper functions | |
338 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
339 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
340 | |
341 JavaThread* java_thread = NULL; | |
342 // Sequential search for now. Need to do better optimization later. | |
343 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
344 oop tobj = thread->threadObj(); | |
345 if (!thread->is_exiting() && | |
346 tobj != NULL && | |
347 thread_id == java_lang_Thread::thread_id(tobj)) { | |
348 java_thread = thread; | |
349 break; | |
350 } | |
351 } | |
352 return java_thread; | |
353 } | |
354 | |
355 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
356 if (mgr == NULL) { | |
357 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
358 } | |
359 oop mgr_obj = JNIHandles::resolve(mgr); | |
360 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
361 | |
362 klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); | |
363 if (!h->is_a(k)) { | |
364 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
365 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
366 NULL); | |
367 } | |
368 | |
369 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
370 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
371 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
372 "Invalid GC memory manager", | |
373 NULL); | |
374 } | |
375 return (GCMemoryManager*) gc; | |
376 } | |
377 | |
378 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
379 if (obj == NULL) { | |
380 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
381 } | |
382 | |
383 oop pool_obj = JNIHandles::resolve(obj); | |
384 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
385 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
386 | |
387 return MemoryService::get_memory_pool(ph); | |
388 } | |
389 | |
390 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
391 int num_threads = ids_ah->length(); | |
392 | |
393 // Validate input thread IDs | |
394 int i = 0; | |
395 for (i = 0; i < num_threads; i++) { | |
396 jlong tid = ids_ah->long_at(i); | |
397 if (tid <= 0) { | |
398 // throw exception if invalid thread id. | |
399 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
400 "Invalid thread ID entry"); | |
401 } | |
402 } | |
403 } | |
404 | |
405 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
406 // check if the element of infoArray is of type ThreadInfo class | |
407 klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); | |
408 klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); | |
409 if (element_klass != threadinfo_klass) { | |
410 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
411 "infoArray element type is not ThreadInfo class"); | |
412 } | |
413 } | |
414 | |
415 | |
416 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
417 if (obj == NULL) { | |
418 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
419 } | |
420 | |
421 oop mgr_obj = JNIHandles::resolve(obj); | |
422 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
423 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
424 | |
425 return MemoryService::get_memory_manager(mh); | |
426 } | |
427 | |
428 // Returns a version string and sets major and minor version if | |
429 // the input parameters are non-null. | |
430 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
431 return JMM_VERSION; | |
432 JVM_END | |
433 | |
434 // Gets the list of VM monitoring and management optional supports | |
435 // Returns 0 if succeeded; otherwise returns non-zero. | |
436 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
437 if (support == NULL) { | |
438 return -1; | |
439 } | |
440 Management::get_optional_support(support); | |
441 return 0; | |
442 JVM_END | |
443 | |
444 // Returns a java.lang.String object containing the input arguments to the VM. | |
445 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
446 ResourceMark rm(THREAD); | |
447 | |
448 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
449 return NULL; | |
450 } | |
451 | |
452 char** vm_flags = Arguments::jvm_flags_array(); | |
453 char** vm_args = Arguments::jvm_args_array(); | |
454 int num_flags = Arguments::num_jvm_flags(); | |
455 int num_args = Arguments::num_jvm_args(); | |
456 | |
457 size_t length = 1; // null terminator | |
458 int i; | |
459 for (i = 0; i < num_flags; i++) { | |
460 length += strlen(vm_flags[i]); | |
461 } | |
462 for (i = 0; i < num_args; i++) { | |
463 length += strlen(vm_args[i]); | |
464 } | |
465 // add a space between each argument | |
466 length += num_flags + num_args - 1; | |
467 | |
468 // Return the list of input arguments passed to the VM | |
469 // and preserve the order that the VM processes. | |
470 char* args = NEW_RESOURCE_ARRAY(char, length); | |
471 args[0] = '\0'; | |
472 // concatenate all jvm_flags | |
473 if (num_flags > 0) { | |
474 strcat(args, vm_flags[0]); | |
475 for (i = 1; i < num_flags; i++) { | |
476 strcat(args, " "); | |
477 strcat(args, vm_flags[i]); | |
478 } | |
479 } | |
480 | |
481 if (num_args > 0 && num_flags > 0) { | |
482 // append a space if args already contains one or more jvm_flags | |
483 strcat(args, " "); | |
484 } | |
485 | |
486 // concatenate all jvm_args | |
487 if (num_args > 0) { | |
488 strcat(args, vm_args[0]); | |
489 for (i = 1; i < num_args; i++) { | |
490 strcat(args, " "); | |
491 strcat(args, vm_args[i]); | |
492 } | |
493 } | |
494 | |
495 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
496 return JNIHandles::make_local(env, hargs()); | |
497 JVM_END | |
498 | |
499 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
500 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
501 ResourceMark rm(THREAD); | |
502 | |
503 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
504 return NULL; | |
505 } | |
506 | |
507 char** vm_flags = Arguments::jvm_flags_array(); | |
508 char** vm_args = Arguments::jvm_args_array(); | |
509 int num_flags = Arguments::num_jvm_flags(); | |
510 int num_args = Arguments::num_jvm_args(); | |
511 | |
1142 | 512 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 513 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
514 objArrayHandle result_h(THREAD, r); | |
515 | |
516 int index = 0; | |
517 for (int j = 0; j < num_flags; j++, index++) { | |
518 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
519 result_h->obj_at_put(index, h()); | |
520 } | |
521 for (int i = 0; i < num_args; i++, index++) { | |
522 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
523 result_h->obj_at_put(index, h()); | |
524 } | |
525 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
526 JVM_END | |
527 | |
528 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
529 // one for each memory pool if obj == null; otherwise returns | |
530 // an array of memory pools for a given memory manager if | |
531 // it is a valid memory manager. | |
532 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
533 ResourceMark rm(THREAD); | |
534 | |
535 int num_memory_pools; | |
536 MemoryManager* mgr = NULL; | |
537 if (obj == NULL) { | |
538 num_memory_pools = MemoryService::num_memory_pools(); | |
539 } else { | |
540 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
541 if (mgr == NULL) { | |
542 return NULL; | |
543 } | |
544 num_memory_pools = mgr->num_memory_pools(); | |
545 } | |
546 | |
547 // Allocate the resulting MemoryPoolMXBean[] object | |
548 klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); | |
549 instanceKlassHandle ik (THREAD, k); | |
550 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
551 objArrayHandle poolArray(THREAD, r); | |
552 | |
553 if (mgr == NULL) { | |
554 // Get all memory pools | |
555 for (int i = 0; i < num_memory_pools; i++) { | |
556 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
557 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
558 instanceHandle ph(THREAD, p); | |
559 poolArray->obj_at_put(i, ph()); | |
560 } | |
561 } else { | |
562 // Get memory pools managed by a given memory manager | |
563 for (int i = 0; i < num_memory_pools; i++) { | |
564 MemoryPool* pool = mgr->get_memory_pool(i); | |
565 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
566 instanceHandle ph(THREAD, p); | |
567 poolArray->obj_at_put(i, ph()); | |
568 } | |
569 } | |
570 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
571 JVM_END | |
572 | |
573 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
574 // one for each memory manager if obj == null; otherwise returns | |
575 // an array of memory managers for a given memory pool if | |
576 // it is a valid memory pool. | |
577 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
578 ResourceMark rm(THREAD); | |
579 | |
580 int num_mgrs; | |
581 MemoryPool* pool = NULL; | |
582 if (obj == NULL) { | |
583 num_mgrs = MemoryService::num_memory_managers(); | |
584 } else { | |
585 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
586 if (pool == NULL) { | |
587 return NULL; | |
588 } | |
589 num_mgrs = pool->num_memory_managers(); | |
590 } | |
591 | |
592 // Allocate the resulting MemoryManagerMXBean[] object | |
593 klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); | |
594 instanceKlassHandle ik (THREAD, k); | |
595 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
596 objArrayHandle mgrArray(THREAD, r); | |
597 | |
598 if (pool == NULL) { | |
599 // Get all memory managers | |
600 for (int i = 0; i < num_mgrs; i++) { | |
601 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
602 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
603 instanceHandle ph(THREAD, p); | |
604 mgrArray->obj_at_put(i, ph()); | |
605 } | |
606 } else { | |
607 // Get memory managers for a given memory pool | |
608 for (int i = 0; i < num_mgrs; i++) { | |
609 MemoryManager* mgr = pool->get_memory_manager(i); | |
610 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
611 instanceHandle ph(THREAD, p); | |
612 mgrArray->obj_at_put(i, ph()); | |
613 } | |
614 } | |
615 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
616 JVM_END | |
617 | |
618 | |
619 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
620 // of a given memory pool. | |
621 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
622 ResourceMark rm(THREAD); | |
623 | |
624 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
625 if (pool != NULL) { | |
626 MemoryUsage usage = pool->get_memory_usage(); | |
627 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
628 return JNIHandles::make_local(env, h()); | |
629 } else { | |
630 return NULL; | |
631 } | |
632 JVM_END | |
633 | |
634 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
635 // of a given memory pool. | |
636 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
637 ResourceMark rm(THREAD); | |
638 | |
639 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
640 if (pool != NULL) { | |
641 MemoryUsage usage = pool->get_peak_memory_usage(); | |
642 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
643 return JNIHandles::make_local(env, h()); | |
644 } else { | |
645 return NULL; | |
646 } | |
647 JVM_END | |
648 | |
649 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
650 // of a given memory pool after most recent GC. | |
651 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
652 ResourceMark rm(THREAD); | |
653 | |
654 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
655 if (pool != NULL && pool->is_collected_pool()) { | |
656 MemoryUsage usage = pool->get_last_collection_usage(); | |
657 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
658 return JNIHandles::make_local(env, h()); | |
659 } else { | |
660 return NULL; | |
661 } | |
662 JVM_END | |
663 | |
664 // Sets the memory pool sensor for a threshold type | |
665 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
666 if (obj == NULL || sensorObj == NULL) { | |
667 THROW(vmSymbols::java_lang_NullPointerException()); | |
668 } | |
669 | |
670 klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); | |
671 oop s = JNIHandles::resolve(sensorObj); | |
672 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
673 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
674 if (!sensor_h->is_a(sensor_klass)) { | |
675 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
676 "Sensor is not an instance of sun.management.Sensor class"); | |
677 } | |
678 | |
679 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
680 assert(mpool != NULL, "MemoryPool should exist"); | |
681 | |
682 switch (type) { | |
683 case JMM_USAGE_THRESHOLD_HIGH: | |
684 case JMM_USAGE_THRESHOLD_LOW: | |
685 // have only one sensor for threshold high and low | |
686 mpool->set_usage_sensor_obj(sensor_h); | |
687 break; | |
688 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
689 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
690 // have only one sensor for threshold high and low | |
691 mpool->set_gc_usage_sensor_obj(sensor_h); | |
692 break; | |
693 default: | |
694 assert(false, "Unrecognized type"); | |
695 } | |
696 | |
697 JVM_END | |
698 | |
699 | |
700 // Sets the threshold of a given memory pool. | |
701 // Returns the previous threshold. | |
702 // | |
703 // Input parameters: | |
704 // pool - the MemoryPoolMXBean object | |
705 // type - threshold type | |
706 // threshold - the new threshold (must not be negative) | |
707 // | |
708 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
709 if (threshold < 0) { | |
710 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
711 "Invalid threshold value", | |
712 -1); | |
713 } | |
714 | |
489
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715 if ((size_t)threshold > max_uintx) { |
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716 stringStream st; |
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717 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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718 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 719 } |
720 | |
721 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
722 assert(pool != NULL, "MemoryPool should exist"); | |
723 | |
724 jlong prev = 0; | |
725 switch (type) { | |
726 case JMM_USAGE_THRESHOLD_HIGH: | |
727 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
728 return -1; | |
729 } | |
730 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
731 break; | |
732 | |
733 case JMM_USAGE_THRESHOLD_LOW: | |
734 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
735 return -1; | |
736 } | |
737 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
738 break; | |
739 | |
740 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
741 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
742 return -1; | |
743 } | |
744 // return and the new threshold is effective for the next GC | |
745 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
746 | |
747 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
748 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
749 return -1; | |
750 } | |
751 // return and the new threshold is effective for the next GC | |
752 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
753 | |
754 default: | |
755 assert(false, "Unrecognized type"); | |
756 return -1; | |
757 } | |
758 | |
759 // When the threshold is changed, reevaluate if the low memory | |
760 // detection is enabled. | |
761 if (prev != threshold) { | |
762 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
763 LowMemoryDetector::detect_low_memory(pool); | |
764 } | |
765 return prev; | |
766 JVM_END | |
767 | |
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768 // Gets an array containing the amount of memory allocated on the Java |
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769 // heap for a set of threads (in bytes). Each element of the array is |
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770 // the amount of memory allocated for the thread ID specified in the |
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771 // corresponding entry in the given array of thread IDs; or -1 if the |
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772 // thread does not exist or has terminated. |
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773 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
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774 jlongArray sizeArray)) |
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775 // Check if threads is null |
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776 if (ids == NULL || sizeArray == NULL) { |
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777 THROW(vmSymbols::java_lang_NullPointerException()); |
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778 } |
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779 |
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780 ResourceMark rm(THREAD); |
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781 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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782 typeArrayHandle ids_ah(THREAD, ta); |
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783 |
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784 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
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785 typeArrayHandle sizeArray_h(THREAD, sa); |
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786 |
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787 // validate the thread id array |
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788 validate_thread_id_array(ids_ah, CHECK); |
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789 |
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790 // sizeArray must be of the same length as the given array of thread IDs |
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791 int num_threads = ids_ah->length(); |
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792 if (num_threads != sizeArray_h->length()) { |
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793 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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794 "The length of the given long array does not match the length of " |
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795 "the given array of thread IDs"); |
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796 } |
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797 |
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798 MutexLockerEx ml(Threads_lock); |
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799 for (int i = 0; i < num_threads; i++) { |
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800 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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801 if (java_thread != NULL) { |
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802 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
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803 } |
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804 } |
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805 JVM_END |
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806 |
0 | 807 // Returns a java/lang/management/MemoryUsage object representing |
808 // the memory usage for the heap or non-heap memory. | |
809 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
810 ResourceMark rm(THREAD); | |
811 | |
812 // Calculate the memory usage | |
813 size_t total_init = 0; | |
814 size_t total_used = 0; | |
815 size_t total_committed = 0; | |
816 size_t total_max = 0; | |
817 bool has_undefined_init_size = false; | |
818 bool has_undefined_max_size = false; | |
819 | |
820 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
821 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
822 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
823 MemoryUsage u = pool->get_memory_usage(); | |
824 total_used += u.used(); | |
825 total_committed += u.committed(); | |
826 | |
827 // if any one of the memory pool has undefined init_size or max_size, | |
828 // set it to -1 | |
829 if (u.init_size() == (size_t)-1) { | |
830 has_undefined_init_size = true; | |
831 } | |
832 if (!has_undefined_init_size) { | |
833 total_init += u.init_size(); | |
834 } | |
835 | |
836 if (u.max_size() == (size_t)-1) { | |
837 has_undefined_max_size = true; | |
838 } | |
839 if (!has_undefined_max_size) { | |
840 total_max += u.max_size(); | |
841 } | |
842 } | |
843 } | |
844 | |
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845 // In our current implementation, we make sure that all non-heap |
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846 // pools have defined init and max sizes. Heap pools do not matter, |
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847 // as we never use total_init and total_max for them. |
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848 assert(heap || !has_undefined_init_size, "Undefined init size"); |
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849 assert(heap || !has_undefined_max_size, "Undefined max size"); |
0 | 850 |
1064 | 851 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 852 total_used, |
853 total_committed, | |
854 (heap ? Universe::heap()->max_capacity() : total_max)); | |
855 | |
856 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
857 return JNIHandles::make_local(env, obj()); | |
858 JVM_END | |
859 | |
860 // Returns the boolean value of a given attribute. | |
861 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
862 switch (att) { | |
863 case JMM_VERBOSE_GC: | |
864 return MemoryService::get_verbose(); | |
865 case JMM_VERBOSE_CLASS: | |
866 return ClassLoadingService::get_verbose(); | |
867 case JMM_THREAD_CONTENTION_MONITORING: | |
868 return ThreadService::is_thread_monitoring_contention(); | |
869 case JMM_THREAD_CPU_TIME: | |
870 return ThreadService::is_thread_cpu_time_enabled(); | |
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871 case JMM_THREAD_ALLOCATED_MEMORY: |
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872 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 873 default: |
874 assert(0, "Unrecognized attribute"); | |
875 return false; | |
876 } | |
877 JVM_END | |
878 | |
879 // Sets the given boolean attribute and returns the previous value. | |
880 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
881 switch (att) { | |
882 case JMM_VERBOSE_GC: | |
883 return MemoryService::set_verbose(flag != 0); | |
884 case JMM_VERBOSE_CLASS: | |
885 return ClassLoadingService::set_verbose(flag != 0); | |
886 case JMM_THREAD_CONTENTION_MONITORING: | |
887 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
888 case JMM_THREAD_CPU_TIME: | |
889 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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890 case JMM_THREAD_ALLOCATED_MEMORY: |
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891 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 892 default: |
893 assert(0, "Unrecognized attribute"); | |
894 return false; | |
895 } | |
896 JVM_END | |
897 | |
898 | |
899 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
900 switch (att) { | |
901 case JMM_GC_TIME_MS: | |
902 return mgr->gc_time_ms(); | |
903 | |
904 case JMM_GC_COUNT: | |
905 return mgr->gc_count(); | |
906 | |
907 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
908 // current implementation only has 1 ext attribute | |
909 return 1; | |
910 | |
911 default: | |
912 assert(0, "Unrecognized GC attribute"); | |
913 return -1; | |
914 } | |
915 } | |
916 | |
917 class VmThreadCountClosure: public ThreadClosure { | |
918 private: | |
919 int _count; | |
920 public: | |
921 VmThreadCountClosure() : _count(0) {}; | |
922 void do_thread(Thread* thread); | |
923 int count() { return _count; } | |
924 }; | |
925 | |
926 void VmThreadCountClosure::do_thread(Thread* thread) { | |
927 // exclude externally visible JavaThreads | |
928 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
929 return; | |
930 } | |
931 | |
932 _count++; | |
933 } | |
934 | |
935 static jint get_vm_thread_count() { | |
936 VmThreadCountClosure vmtcc; | |
937 { | |
938 MutexLockerEx ml(Threads_lock); | |
939 Threads::threads_do(&vmtcc); | |
940 } | |
941 | |
942 return vmtcc.count(); | |
943 } | |
944 | |
945 static jint get_num_flags() { | |
946 // last flag entry is always NULL, so subtract 1 | |
947 int nFlags = (int) Flag::numFlags - 1; | |
948 int count = 0; | |
949 for (int i = 0; i < nFlags; i++) { | |
950 Flag* flag = &Flag::flags[i]; | |
350 | 951 // Exclude the locked (diagnostic, experimental) flags |
0 | 952 if (flag->is_unlocked() || flag->is_unlocker()) { |
953 count++; | |
954 } | |
955 } | |
956 return count; | |
957 } | |
958 | |
959 static jlong get_long_attribute(jmmLongAttribute att) { | |
960 switch (att) { | |
961 case JMM_CLASS_LOADED_COUNT: | |
962 return ClassLoadingService::loaded_class_count(); | |
963 | |
964 case JMM_CLASS_UNLOADED_COUNT: | |
965 return ClassLoadingService::unloaded_class_count(); | |
966 | |
967 case JMM_THREAD_TOTAL_COUNT: | |
968 return ThreadService::get_total_thread_count(); | |
969 | |
970 case JMM_THREAD_LIVE_COUNT: | |
971 return ThreadService::get_live_thread_count(); | |
972 | |
973 case JMM_THREAD_PEAK_COUNT: | |
974 return ThreadService::get_peak_thread_count(); | |
975 | |
976 case JMM_THREAD_DAEMON_COUNT: | |
977 return ThreadService::get_daemon_thread_count(); | |
978 | |
979 case JMM_JVM_INIT_DONE_TIME_MS: | |
980 return Management::vm_init_done_time(); | |
981 | |
982 case JMM_COMPILE_TOTAL_TIME_MS: | |
983 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
984 | |
985 case JMM_OS_PROCESS_ID: | |
986 return os::current_process_id(); | |
987 | |
988 // Hotspot-specific counters | |
989 case JMM_CLASS_LOADED_BYTES: | |
990 return ClassLoadingService::loaded_class_bytes(); | |
991 | |
992 case JMM_CLASS_UNLOADED_BYTES: | |
993 return ClassLoadingService::unloaded_class_bytes(); | |
994 | |
995 case JMM_SHARED_CLASS_LOADED_COUNT: | |
996 return ClassLoadingService::loaded_shared_class_count(); | |
997 | |
998 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
999 return ClassLoadingService::unloaded_shared_class_count(); | |
1000 | |
1001 | |
1002 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1003 return ClassLoadingService::loaded_shared_class_bytes(); | |
1004 | |
1005 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1006 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1007 | |
1008 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1009 return ClassLoader::classloader_time_ms(); | |
1010 | |
1011 case JMM_VM_GLOBAL_COUNT: | |
1012 return get_num_flags(); | |
1013 | |
1014 case JMM_SAFEPOINT_COUNT: | |
1015 return RuntimeService::safepoint_count(); | |
1016 | |
1017 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1018 return RuntimeService::safepoint_sync_time_ms(); | |
1019 | |
1020 case JMM_TOTAL_STOPPED_TIME_MS: | |
1021 return RuntimeService::safepoint_time_ms(); | |
1022 | |
1023 case JMM_TOTAL_APP_TIME_MS: | |
1024 return RuntimeService::application_time_ms(); | |
1025 | |
1026 case JMM_VM_THREAD_COUNT: | |
1027 return get_vm_thread_count(); | |
1028 | |
1029 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1030 return ClassLoader::class_init_count(); | |
1031 | |
1032 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1033 return ClassLoader::class_init_time_ms(); | |
1034 | |
1035 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1036 return ClassLoader::class_verify_time_ms(); | |
1037 | |
1038 case JMM_METHOD_DATA_SIZE_BYTES: | |
1039 return ClassLoadingService::class_method_data_size(); | |
1040 | |
1041 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1042 return os::physical_memory(); | |
1043 | |
1044 default: | |
1045 return -1; | |
1046 } | |
1047 } | |
1048 | |
1049 | |
1050 // Returns the long value of a given attribute. | |
1051 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1052 if (obj == NULL) { | |
1053 return get_long_attribute(att); | |
1054 } else { | |
1055 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1056 if (mgr != NULL) { | |
1057 return get_gc_attribute(mgr, att); | |
1058 } | |
1059 } | |
1060 return -1; | |
1061 JVM_END | |
1062 | |
1063 // Gets the value of all attributes specified in the given array | |
1064 // and sets the value in the result array. | |
1065 // Returns the number of attributes found. | |
1066 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1067 jobject obj, | |
1068 jmmLongAttribute* atts, | |
1069 jint count, | |
1070 jlong* result)) | |
1071 | |
1072 int num_atts = 0; | |
1073 if (obj == NULL) { | |
1074 for (int i = 0; i < count; i++) { | |
1075 result[i] = get_long_attribute(atts[i]); | |
1076 if (result[i] != -1) { | |
1077 num_atts++; | |
1078 } | |
1079 } | |
1080 } else { | |
1081 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1082 for (int i = 0; i < count; i++) { | |
1083 result[i] = get_gc_attribute(mgr, atts[i]); | |
1084 if (result[i] != -1) { | |
1085 num_atts++; | |
1086 } | |
1087 } | |
1088 } | |
1089 return num_atts; | |
1090 JVM_END | |
1091 | |
1092 // Helper function to do thread dump for a specific list of threads | |
1093 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1094 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1095 int num_threads, | |
1096 int max_depth, | |
1097 bool with_locked_monitors, | |
1098 bool with_locked_synchronizers, | |
1099 TRAPS) { | |
1100 | |
1101 // First get an array of threadObj handles. | |
1102 // A JavaThread may terminate before we get the stack trace. | |
1103 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1104 { | |
1105 MutexLockerEx ml(Threads_lock); | |
1106 for (int i = 0; i < num_threads; i++) { | |
1107 jlong tid = ids_ah->long_at(i); | |
1108 JavaThread* jt = find_java_thread_from_id(tid); | |
1109 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
1110 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1111 thread_handle_array->append(threadObj_h); | |
1112 } | |
1113 } | |
1114 | |
1115 // Obtain thread dumps and thread snapshot information | |
1116 VM_ThreadDump op(dump_result, | |
1117 thread_handle_array, | |
1118 num_threads, | |
1119 max_depth, /* stack depth */ | |
1120 with_locked_monitors, | |
1121 with_locked_synchronizers); | |
1122 VMThread::execute(&op); | |
1123 } | |
1124 | |
1125 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1126 // for the thread ID specified in the corresponding entry in | |
1127 // the given array of thread IDs; or NULL if the thread does not exist | |
1128 // or has terminated. | |
1129 // | |
1130 // Input parameters: | |
1131 // ids - array of thread IDs | |
1132 // maxDepth - the maximum depth of stack traces to be dumped: | |
1133 // maxDepth == -1 requests to dump entire stack trace. | |
1134 // maxDepth == 0 requests no stack trace. | |
1135 // infoArray - array of ThreadInfo objects | |
1136 // | |
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1137 // QQQ - Why does this method return a value instead of void? |
0 | 1138 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1139 // Check if threads is null | |
1140 if (ids == NULL || infoArray == NULL) { | |
1141 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1142 } | |
1143 | |
1144 if (maxDepth < -1) { | |
1145 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1146 "Invalid maxDepth", -1); | |
1147 } | |
1148 | |
1149 ResourceMark rm(THREAD); | |
1150 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1151 typeArrayHandle ids_ah(THREAD, ta); | |
1152 | |
1153 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1154 objArrayOop oa = objArrayOop(infoArray_obj); | |
1155 objArrayHandle infoArray_h(THREAD, oa); | |
1156 | |
1157 // validate the thread id array | |
1158 validate_thread_id_array(ids_ah, CHECK_0); | |
1159 | |
1160 // validate the ThreadInfo[] parameters | |
1161 validate_thread_info_array(infoArray_h, CHECK_0); | |
1162 | |
1163 // infoArray must be of the same length as the given array of thread IDs | |
1164 int num_threads = ids_ah->length(); | |
1165 if (num_threads != infoArray_h->length()) { | |
1166 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1167 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1168 } | |
1169 | |
1170 if (JDK_Version::is_gte_jdk16x_version()) { | |
1171 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1172 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1173 } | |
1174 | |
1175 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1176 // GC may occur after the thread snapshots are taken but before | |
1177 // this function returns. The threadObj and other oops kept | |
1178 // in the ThreadSnapshot are marked and adjusted during GC. | |
1179 ThreadDumpResult dump_result(num_threads); | |
1180 | |
1181 if (maxDepth == 0) { | |
1182 // no stack trace dumped - do not need to stop the world | |
1183 { | |
1184 MutexLockerEx ml(Threads_lock); | |
1185 for (int i = 0; i < num_threads; i++) { | |
1186 jlong tid = ids_ah->long_at(i); | |
1187 JavaThread* jt = find_java_thread_from_id(tid); | |
1188 ThreadSnapshot* ts; | |
1189 if (jt == NULL) { | |
1190 // if the thread does not exist or now it is terminated, | |
1191 // create dummy snapshot | |
1192 ts = new ThreadSnapshot(); | |
1193 } else { | |
1194 ts = new ThreadSnapshot(jt); | |
1195 } | |
1196 dump_result.add_thread_snapshot(ts); | |
1197 } | |
1198 } | |
1199 } else { | |
1200 // obtain thread dump with the specific list of threads with stack trace | |
1201 do_thread_dump(&dump_result, | |
1202 ids_ah, | |
1203 num_threads, | |
1204 maxDepth, | |
1205 false, /* no locked monitor */ | |
1206 false, /* no locked synchronizers */ | |
1207 CHECK_0); | |
1208 } | |
1209 | |
1210 int num_snapshots = dump_result.num_snapshots(); | |
1211 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1212 int index = 0; | |
1213 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1214 // For each thread, create an java/lang/management/ThreadInfo object | |
1215 // and fill with the thread information | |
1216 | |
1217 if (ts->threadObj() == NULL) { | |
1218 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1219 infoArray_h->obj_at_put(index, NULL); | |
1220 continue; | |
1221 } | |
1222 | |
1223 // Create java.lang.management.ThreadInfo object | |
1224 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1225 infoArray_h->obj_at_put(index, info_obj); | |
1226 } | |
1227 return 0; | |
1228 JVM_END | |
1229 | |
1230 // Dump thread info for the specified threads. | |
1231 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1232 // for the thread ID specified in the corresponding entry in | |
1233 // the given array of thread IDs; or NULL if the thread does not exist | |
1234 // or has terminated. | |
1235 // | |
1236 // Input parameter: | |
1237 // ids - array of thread IDs; NULL indicates all live threads | |
1238 // locked_monitors - if true, dump locked object monitors | |
1239 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1240 // | |
1241 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1242 ResourceMark rm(THREAD); | |
1243 | |
1244 if (JDK_Version::is_gte_jdk16x_version()) { | |
1245 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1246 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1247 } | |
1248 | |
1249 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1250 int num_threads = (ta != NULL ? ta->length() : 0); | |
1251 typeArrayHandle ids_ah(THREAD, ta); | |
1252 | |
1253 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1254 | |
1255 if (ids_ah() != NULL) { | |
1256 | |
1257 // validate the thread id array | |
1258 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1259 | |
1260 // obtain thread dump of a specific list of threads | |
1261 do_thread_dump(&dump_result, | |
1262 ids_ah, | |
1263 num_threads, | |
1264 -1, /* entire stack */ | |
1265 (locked_monitors ? true : false), /* with locked monitors */ | |
1266 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1267 CHECK_NULL); | |
1268 } else { | |
1269 // obtain thread dump of all threads | |
1270 VM_ThreadDump op(&dump_result, | |
1271 -1, /* entire stack */ | |
1272 (locked_monitors ? true : false), /* with locked monitors */ | |
1273 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1274 VMThread::execute(&op); | |
1275 } | |
1276 | |
1277 int num_snapshots = dump_result.num_snapshots(); | |
1278 | |
1279 // create the result ThreadInfo[] object | |
1280 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
1281 instanceKlassHandle ik (THREAD, k); | |
1282 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1283 objArrayHandle result_h(THREAD, r); | |
1284 | |
1285 int index = 0; | |
1286 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1287 if (ts->threadObj() == NULL) { | |
1288 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1289 result_h->obj_at_put(index, NULL); | |
1290 continue; | |
1291 } | |
1292 | |
1293 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1294 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1295 | |
1296 // Create Object[] filled with locked monitors | |
1297 // Create int[] filled with the stack depth where a monitor was locked | |
1298 int num_frames = stacktrace->get_stack_depth(); | |
1299 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1300 | |
1301 // Count the total number of locked monitors | |
1302 for (int i = 0; i < num_frames; i++) { | |
1303 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1304 num_locked_monitors += frame->num_locked_monitors(); | |
1305 } | |
1306 | |
1307 objArrayHandle monitors_array; | |
1308 typeArrayHandle depths_array; | |
1309 objArrayHandle synchronizers_array; | |
1310 | |
1311 if (locked_monitors) { | |
1312 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1313 // where the thread locked it | |
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1314 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
0 | 1315 objArrayHandle mh(THREAD, array); |
1316 monitors_array = mh; | |
1317 | |
1318 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1319 typeArrayHandle dh(THREAD, tarray); | |
1320 depths_array = dh; | |
1321 | |
1322 int count = 0; | |
1323 int j = 0; | |
1324 for (int depth = 0; depth < num_frames; depth++) { | |
1325 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1326 int len = frame->num_locked_monitors(); | |
1327 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1328 for (j = 0; j < len; j++) { | |
1329 oop monitor = locked_monitors->at(j); | |
1330 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1331 monitors_array->obj_at_put(count, monitor); | |
1332 depths_array->int_at_put(count, depth); | |
1333 count++; | |
1334 } | |
1335 } | |
1336 | |
1337 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1338 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1339 oop object = jni_locked_monitors->at(j); | |
1340 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1341 monitors_array->obj_at_put(count, object); | |
1342 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1343 depths_array->int_at_put(count, -1); | |
1344 count++; | |
1345 } | |
1346 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1347 } | |
1348 | |
1349 if (locked_synchronizers) { | |
1350 // Create Object[] filled with locked JSR-166 synchronizers | |
1351 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1352 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1353 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1354 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1355 | |
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1356 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
0 | 1357 objArrayHandle sh(THREAD, array); |
1358 synchronizers_array = sh; | |
1359 | |
1360 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1361 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1362 } | |
1363 } | |
1364 | |
1365 // Create java.lang.management.ThreadInfo object | |
1366 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1367 monitors_array, | |
1368 depths_array, | |
1369 synchronizers_array, | |
1370 CHECK_NULL); | |
1371 result_h->obj_at_put(index, info_obj); | |
1372 } | |
1373 | |
1374 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1375 JVM_END | |
1376 | |
1377 // Returns an array of Class objects. | |
1378 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1379 ResourceMark rm(THREAD); | |
1380 | |
1381 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1382 | |
1383 int num_classes = lce.num_loaded_classes(); | |
1142 | 1384 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1385 objArrayHandle classes_ah(THREAD, r); |
1386 | |
1387 for (int i = 0; i < num_classes; i++) { | |
1388 KlassHandle kh = lce.get_klass(i); | |
1389 oop mirror = Klass::cast(kh())->java_mirror(); | |
1390 classes_ah->obj_at_put(i, mirror); | |
1391 } | |
1392 | |
1393 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1394 JVM_END | |
1395 | |
1396 // Reset statistic. Return true if the requested statistic is reset. | |
1397 // Otherwise, return false. | |
1398 // | |
1399 // Input parameters: | |
1400 // obj - specify which instance the statistic associated with to be reset | |
1401 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1402 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1403 // type - the type of statistic to be reset | |
1404 // | |
1405 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1406 ResourceMark rm(THREAD); | |
1407 | |
1408 switch (type) { | |
1409 case JMM_STAT_PEAK_THREAD_COUNT: | |
1410 ThreadService::reset_peak_thread_count(); | |
1411 return true; | |
1412 | |
1413 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1414 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1415 jlong tid = obj.j; | |
1416 if (tid < 0) { | |
1417 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1418 } | |
1419 | |
1420 // Look for the JavaThread of this given tid | |
1421 MutexLockerEx ml(Threads_lock); | |
1422 if (tid == 0) { | |
1423 // reset contention statistics for all threads if tid == 0 | |
1424 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1425 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1426 ThreadService::reset_contention_count_stat(java_thread); | |
1427 } else { | |
1428 ThreadService::reset_contention_time_stat(java_thread); | |
1429 } | |
1430 } | |
1431 } else { | |
1432 // reset contention statistics for a given thread | |
1433 JavaThread* java_thread = find_java_thread_from_id(tid); | |
1434 if (java_thread == NULL) { | |
1435 return false; | |
1436 } | |
1437 | |
1438 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1439 ThreadService::reset_contention_count_stat(java_thread); | |
1440 } else { | |
1441 ThreadService::reset_contention_time_stat(java_thread); | |
1442 } | |
1443 } | |
1444 return true; | |
1445 break; | |
1446 } | |
1447 case JMM_STAT_PEAK_POOL_USAGE: { | |
1448 jobject o = obj.l; | |
1449 if (o == NULL) { | |
1450 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1451 } | |
1452 | |
1453 oop pool_obj = JNIHandles::resolve(o); | |
1454 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1455 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1456 | |
1457 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1458 if (pool != NULL) { | |
1459 pool->reset_peak_memory_usage(); | |
1460 return true; | |
1461 } | |
1462 break; | |
1463 } | |
1464 case JMM_STAT_GC_STAT: { | |
1465 jobject o = obj.l; | |
1466 if (o == NULL) { | |
1467 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1468 } | |
1469 | |
1470 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1471 if (mgr != NULL) { | |
1472 mgr->reset_gc_stat(); | |
1473 return true; | |
1474 } | |
1475 break; | |
1476 } | |
1477 default: | |
1478 assert(0, "Unknown Statistic Type"); | |
1479 } | |
1480 return false; | |
1481 JVM_END | |
1482 | |
1483 // Returns the fast estimate of CPU time consumed by | |
1484 // a given thread (in nanoseconds). | |
1485 // If thread_id == 0, return CPU time for the current thread. | |
1486 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1487 if (!os::is_thread_cpu_time_supported()) { | |
1488 return -1; | |
1489 } | |
1490 | |
1491 if (thread_id < 0) { | |
1492 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1493 "Invalid thread ID", -1); | |
1494 } | |
1495 | |
1496 JavaThread* java_thread = NULL; | |
1497 if (thread_id == 0) { | |
1498 // current thread | |
1499 return os::current_thread_cpu_time(); | |
1500 } else { | |
1501 MutexLockerEx ml(Threads_lock); | |
1502 java_thread = find_java_thread_from_id(thread_id); | |
1503 if (java_thread != NULL) { | |
1504 return os::thread_cpu_time((Thread*) java_thread); | |
1505 } | |
1506 } | |
1507 return -1; | |
1508 JVM_END | |
1509 | |
1510 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
1511 // If thread_id == 0, CPU time for the current thread is returned. | |
1512 // If user_sys_cpu_time = true, user level and system CPU time of | |
1513 // a given thread is returned; otherwise, only user level CPU time | |
1514 // is returned. | |
1515 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
1516 if (!os::is_thread_cpu_time_supported()) { | |
1517 return -1; | |
1518 } | |
1519 | |
1520 if (thread_id < 0) { | |
1521 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1522 "Invalid thread ID", -1); | |
1523 } | |
1524 | |
1525 JavaThread* java_thread = NULL; | |
1526 if (thread_id == 0) { | |
1527 // current thread | |
1528 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
1529 } else { | |
1530 MutexLockerEx ml(Threads_lock); | |
1531 java_thread = find_java_thread_from_id(thread_id); | |
1532 if (java_thread != NULL) { | |
1533 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
1534 } | |
1535 } | |
1536 return -1; | |
1537 JVM_END | |
1538 | |
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1539 // Gets an array containing the CPU times consumed by a set of threads |
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1540 // (in nanoseconds). Each element of the array is the CPU time for the |
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1541 // thread ID specified in the corresponding entry in the given array |
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1542 // of thread IDs; or -1 if the thread does not exist or has terminated. |
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1543 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
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1544 // for the given thread is returned; otherwise, only user level CPU time |
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1545 // is returned. |
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1546 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
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1547 jlongArray timeArray, |
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1548 jboolean user_sys_cpu_time)) |
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1549 // Check if threads is null |
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1550 if (ids == NULL || timeArray == NULL) { |
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1551 THROW(vmSymbols::java_lang_NullPointerException()); |
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1552 } |
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1553 |
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1554 ResourceMark rm(THREAD); |
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1555 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
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1556 typeArrayHandle ids_ah(THREAD, ta); |
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1557 |
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1558 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
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1559 typeArrayHandle timeArray_h(THREAD, tia); |
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1560 |
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1561 // validate the thread id array |
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1562 validate_thread_id_array(ids_ah, CHECK); |
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1563 |
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1564 // timeArray must be of the same length as the given array of thread IDs |
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1565 int num_threads = ids_ah->length(); |
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1566 if (num_threads != timeArray_h->length()) { |
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1567 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
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1568 "The length of the given long array does not match the length of " |
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1569 "the given array of thread IDs"); |
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1570 } |
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1571 |
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1572 MutexLockerEx ml(Threads_lock); |
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1573 for (int i = 0; i < num_threads; i++) { |
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1574 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
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1575 if (java_thread != NULL) { |
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1576 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
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1577 user_sys_cpu_time != 0)); |
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1578 } |
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1579 } |
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1580 JVM_END |
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1581 |
0 | 1582 // Returns a String array of all VM global flag names |
1583 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1584 // last flag entry is always NULL, so subtract 1 | |
1585 int nFlags = (int) Flag::numFlags - 1; | |
1586 // allocate a temp array | |
1142 | 1587 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1588 nFlags, CHECK_0); |
1589 objArrayHandle flags_ah(THREAD, r); | |
1590 int num_entries = 0; | |
1591 for (int i = 0; i < nFlags; i++) { | |
1592 Flag* flag = &Flag::flags[i]; | |
350 | 1593 // Exclude the locked (experimental, diagnostic) flags |
0 | 1594 if (flag->is_unlocked() || flag->is_unlocker()) { |
1595 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
1596 flags_ah->obj_at_put(num_entries, s()); | |
1597 num_entries++; | |
1598 } | |
1599 } | |
1600 | |
1601 if (num_entries < nFlags) { | |
1602 // Return array of right length | |
1142 | 1603 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1604 for(int i = 0; i < num_entries; i++) { |
1605 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1606 } | |
1607 return (jobjectArray)JNIHandles::make_local(env, res); | |
1608 } | |
1609 | |
1610 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1611 JVM_END | |
1612 | |
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1613 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1614 // can't be determined, true otherwise. If false is returned, then *global |
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1615 // will be incomplete and invalid. |
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1616 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1617 Handle flag_name; |
1618 if (name() == NULL) { | |
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1619 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
0 | 1620 } else { |
1621 flag_name = name; | |
1622 } | |
1623 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1624 | |
1625 if (flag->is_bool()) { | |
1626 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1627 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1628 } else if (flag->is_intx()) { | |
1629 global->value.j = (jlong)flag->get_intx(); | |
1630 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1631 } else if (flag->is_uintx()) { | |
1632 global->value.j = (jlong)flag->get_uintx(); | |
1633 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1634 } else if (flag->is_uint64_t()) { |
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1635 global->value.j = (jlong)flag->get_uint64_t(); |
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1636 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1637 } else if (flag->is_ccstr()) { |
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1638 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1639 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1640 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1641 } else { |
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1642 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1643 return false; |
0 | 1644 } |
1645 | |
1646 global->writeable = flag->is_writeable(); | |
1647 global->external = flag->is_external(); | |
1648 switch (flag->origin) { | |
1649 case DEFAULT: | |
1650 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
1651 break; | |
1652 case COMMAND_LINE: | |
1653 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
1654 break; | |
1655 case ENVIRON_VAR: | |
1656 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
1657 break; | |
1658 case CONFIG_FILE: | |
1659 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
1660 break; | |
1661 case MANAGEMENT: | |
1662 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
1663 break; | |
1664 case ERGONOMIC: | |
1665 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
1666 break; | |
1667 default: | |
1668 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1669 } | |
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1670 |
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1671 return true; |
0 | 1672 } |
1673 | |
1674 // Fill globals array of count length with jmmVMGlobal entries | |
1675 // specified by names. If names == NULL, fill globals array | |
1676 // with all Flags. Return value is number of entries | |
1677 // created in globals. | |
1678 // If a Flag with a given name in an array element does not | |
1679 // exist, globals[i].name will be set to NULL. | |
1680 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1681 jobjectArray names, | |
1682 jmmVMGlobal *globals, | |
1683 jint count)) | |
1684 | |
1685 | |
1686 if (globals == NULL) { | |
1687 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1688 } | |
1689 | |
1690 ResourceMark rm(THREAD); | |
1691 | |
1692 if (names != NULL) { | |
1693 // return the requested globals | |
1694 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1695 objArrayHandle names_ah(THREAD, ta); | |
1696 // Make sure we have a String array | |
1697 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1698 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1699 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1700 "Array element type is not String class", 0); | |
1701 } | |
1702 | |
1703 int names_length = names_ah->length(); | |
1704 int num_entries = 0; | |
1705 for (int i = 0; i < names_length && i < count; i++) { | |
1706 oop s = names_ah->obj_at(i); | |
1707 if (s == NULL) { | |
1708 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1709 } | |
1710 | |
1711 Handle sh(THREAD, s); | |
1712 char* str = java_lang_String::as_utf8_string(s); | |
1713 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1714 if (flag != NULL && |
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1715 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1716 num_entries++; |
1717 } else { | |
1718 globals[i].name = NULL; | |
1719 } | |
1720 } | |
1721 return num_entries; | |
1722 } else { | |
1723 // return all globals if names == NULL | |
1724 | |
1725 // last flag entry is always NULL, so subtract 1 | |
1726 int nFlags = (int) Flag::numFlags - 1; | |
1727 Handle null_h; | |
1728 int num_entries = 0; | |
1729 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1730 Flag* flag = &Flag::flags[i]; | |
350 | 1731 // Exclude the locked (diagnostic, experimental) flags |
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1732 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1733 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1734 num_entries++; |
1735 } | |
1736 } | |
1737 return num_entries; | |
1738 } | |
1739 JVM_END | |
1740 | |
1741 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1742 ResourceMark rm(THREAD); | |
1743 | |
1744 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1745 if (fn == NULL) { | |
1746 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1747 "The flag name cannot be null."); | |
1748 } | |
1749 char* name = java_lang_String::as_utf8_string(fn); | |
1750 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1751 if (flag == NULL) { | |
1752 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1753 "Flag does not exist."); | |
1754 } | |
1755 if (!flag->is_writeable()) { | |
1756 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1757 "This flag is not writeable."); | |
1758 } | |
1759 | |
1760 bool succeed; | |
1761 if (flag->is_bool()) { | |
1762 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
1763 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
1764 } else if (flag->is_intx()) { | |
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1765 intx ivalue = (intx)new_value.j; |
0 | 1766 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
1767 } else if (flag->is_uintx()) { | |
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1768 uintx uvalue = (uintx)new_value.j; |
0 | 1769 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1770 } else if (flag->is_uint64_t()) { |
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1771 uint64_t uvalue = (uint64_t)new_value.j; |
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1772 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
0 | 1773 } else if (flag->is_ccstr()) { |
1774 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1775 if (str == NULL) { | |
1776 THROW(vmSymbols::java_lang_NullPointerException()); | |
1777 } | |
1778 ccstr svalue = java_lang_String::as_utf8_string(str); | |
1779 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
1780 } | |
1781 assert(succeed, "Setting flag should succeed"); | |
1782 JVM_END | |
1783 | |
1784 class ThreadTimesClosure: public ThreadClosure { | |
1785 private: | |
1786 objArrayOop _names; | |
1787 typeArrayOop _times; | |
1788 int _names_len; | |
1789 int _times_len; | |
1790 int _count; | |
1791 | |
1792 public: | |
1793 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
1794 virtual void do_thread(Thread* thread); | |
1795 int count() { return _count; } | |
1796 }; | |
1797 | |
1798 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
1799 typeArrayOop times) { | |
1800 assert(names != NULL, "names was NULL"); | |
1801 assert(times != NULL, "times was NULL"); | |
1802 _names = names; | |
1803 _names_len = names->length(); | |
1804 _times = times; | |
1805 _times_len = times->length(); | |
1806 _count = 0; | |
1807 } | |
1808 | |
1809 void ThreadTimesClosure::do_thread(Thread* thread) { | |
1810 Handle s; | |
1811 assert(thread != NULL, "thread was NULL"); | |
1812 | |
1813 // exclude externally visible JavaThreads | |
1814 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1815 return; | |
1816 } | |
1817 | |
1818 if (_count >= _names_len || _count >= _times_len) { | |
1819 // skip if the result array is not big enough | |
1820 return; | |
1821 } | |
1822 | |
1823 EXCEPTION_MARK; | |
1824 | |
1825 assert(thread->name() != NULL, "All threads should have a name"); | |
1826 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
1827 _names->obj_at_put(_count, s()); | |
1828 | |
1829 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
1830 os::thread_cpu_time(thread) : -1); | |
1831 _count++; | |
1832 } | |
1833 | |
1834 // Fills names with VM internal thread names and times with the corresponding | |
1835 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1836 // If the element type of names is not String, an IllegalArgumentException is | |
1837 // thrown. | |
1838 // If an array is not large enough to hold all the entries, only the entries | |
1839 // that fit will be returned. Return value is the number of VM internal | |
1840 // threads entries. | |
1841 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1842 jobjectArray names, | |
1843 jlongArray times)) | |
1844 if (names == NULL || times == NULL) { | |
1845 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1846 } | |
1847 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1848 objArrayHandle names_ah(THREAD, na); | |
1849 | |
1850 // Make sure we have a String array | |
1851 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
1142 | 1852 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1853 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1854 "Array element type is not String class", 0); | |
1855 } | |
1856 | |
1857 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1858 typeArrayHandle times_ah(THREAD, ta); | |
1859 | |
1860 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
1861 { | |
1862 MutexLockerEx ml(Threads_lock); | |
1863 Threads::threads_do(&ttc); | |
1864 } | |
1865 | |
1866 return ttc.count(); | |
1867 JVM_END | |
1868 | |
1869 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1870 ResourceMark rm(THREAD); | |
1871 | |
1872 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1873 VMThread::execute(&op); | |
1874 | |
1875 DeadlockCycle* deadlocks = op.result(); | |
1876 if (deadlocks == NULL) { | |
1877 // no deadlock found and return | |
1878 return Handle(); | |
1879 } | |
1880 | |
1881 int num_threads = 0; | |
1882 DeadlockCycle* cycle; | |
1883 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1884 num_threads += cycle->num_threads(); | |
1885 } | |
1886 | |
1142 | 1887 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1888 objArrayHandle threads_ah(THREAD, r); |
1889 | |
1890 int index = 0; | |
1891 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1892 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1893 int len = deadlock_threads->length(); | |
1894 for (int i = 0; i < len; i++) { | |
1895 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1896 index++; | |
1897 } | |
1898 } | |
1899 return threads_ah; | |
1900 } | |
1901 | |
1902 // Finds cycles of threads that are deadlocked involved in object monitors | |
1903 // and JSR-166 synchronizers. | |
1904 // Returns an array of Thread objects which are in deadlock, if any. | |
1905 // Otherwise, returns NULL. | |
1906 // | |
1907 // Input parameter: | |
1908 // object_monitors_only - if true, only check object monitors | |
1909 // | |
1910 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1911 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1912 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1913 JVM_END | |
1914 | |
1915 // Finds cycles of threads that are deadlocked on monitor locks | |
1916 // Returns an array of Thread objects which are in deadlock, if any. | |
1917 // Otherwise, returns NULL. | |
1918 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1919 Handle result = find_deadlocks(true, CHECK_0); | |
1920 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1921 JVM_END | |
1922 | |
1923 // Gets the information about GC extension attributes including | |
1924 // the name of the attribute, its type, and a short description. | |
1925 // | |
1926 // Input parameters: | |
1927 // mgr - GC memory manager | |
1928 // info - caller allocated array of jmmExtAttributeInfo | |
1929 // count - number of elements of the info array | |
1930 // | |
1931 // Returns the number of GC extension attributes filled in the info array; or | |
1932 // -1 if info is not big enough | |
1933 // | |
1934 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1935 // All GC memory managers have 1 attribute (number of GC threads) | |
1936 if (count == 0) { | |
1937 return 0; | |
1938 } | |
1939 | |
1940 if (info == NULL) { | |
1941 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1942 } | |
1943 | |
1944 info[0].name = "GcThreadCount"; | |
1945 info[0].type = 'I'; | |
1946 info[0].description = "Number of GC threads"; | |
1947 return 1; | |
1948 JVM_END | |
1949 | |
1950 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1951 // of a given length and return the objArrayOop | |
1952 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1953 if (array == NULL) { | |
1954 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1955 } | |
1956 | |
1957 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1958 objArrayHandle array_h(THREAD, oa); | |
1959 | |
1960 // array must be of the given length | |
1961 if (length != array_h->length()) { | |
1962 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1963 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
1964 } | |
1965 | |
1966 // check if the element of array is of type MemoryUsage class | |
1967 klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); | |
1968 klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); | |
1969 if (element_klass != usage_klass) { | |
1970 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1971 "The element type is not MemoryUsage class", 0); | |
1972 } | |
1973 | |
1974 return array_h(); | |
1975 } | |
1976 | |
1977 // Gets the statistics of the last GC of a given GC memory manager. | |
1978 // Input parameters: | |
1979 // obj - GarbageCollectorMXBean object | |
1980 // gc_stat - caller allocated jmmGCStat where: | |
1981 // a. before_gc_usage - array of MemoryUsage objects | |
1982 // b. after_gc_usage - array of MemoryUsage objects | |
1983 // c. gc_ext_attributes_values_size is set to the | |
1984 // gc_ext_attribute_values array allocated | |
1985 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
1986 // | |
1987 // On return, | |
1988 // gc_index == 0 indicates no GC statistics available | |
1989 // | |
1990 // before_gc_usage and after_gc_usage - filled with per memory pool | |
1991 // before and after GC usage in the same order as the memory pools | |
1992 // returned by GetMemoryPools for a given GC memory manager. | |
1993 // num_gc_ext_attributes indicates the number of elements in | |
1994 // the gc_ext_attribute_values array is filled; or | |
1995 // -1 if the gc_ext_attributes_values array is not big enough | |
1996 // | |
1997 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
1998 ResourceMark rm(THREAD); | |
1999 | |
2000 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
2001 THROW(vmSymbols::java_lang_NullPointerException()); | |
2002 } | |
2003 | |
2004 // Get the GCMemoryManager | |
2005 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
2006 | |
2007 // Make a copy of the last GC statistics | |
2008 // GC may occur while constructing the last GC information | |
2009 int num_pools = MemoryService::num_memory_pools(); | |
2010 GCStatInfo* stat = new GCStatInfo(num_pools); | |
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2011 if (mgr->get_last_gc_stat(stat) == 0) { |
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2012 gc_stat->gc_index = 0; |
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2013 return; |
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2014 } |
0 | 2015 |
2016 gc_stat->gc_index = stat->gc_index(); | |
2017 gc_stat->start_time = Management::ticks_to_ms(stat->start_time()); | |
2018 gc_stat->end_time = Management::ticks_to_ms(stat->end_time()); | |
2019 | |
2020 // Current implementation does not have GC extension attributes | |
2021 gc_stat->num_gc_ext_attributes = 0; | |
2022 | |
2023 // Fill the arrays of MemoryUsage objects with before and after GC | |
2024 // per pool memory usage | |
2025 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2026 num_pools, | |
2027 CHECK); | |
2028 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2029 | |
2030 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2031 num_pools, | |
2032 CHECK); | |
2033 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2034 | |
2035 for (int i = 0; i < num_pools; i++) { | |
2036 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK); | |
2037 Handle after_usage; | |
2038 | |
2039 MemoryUsage u = stat->after_gc_usage_for_pool(i); | |
2040 if (u.max_size() == 0 && u.used() > 0) { | |
2041 // If max size == 0, this pool is a survivor space. | |
2042 // Set max size = -1 since the pools will be swapped after GC. | |
2043 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2044 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2045 } else { | |
2046 after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK); | |
2047 } | |
2048 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2049 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2050 } | |
2051 | |
2052 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2053 // Current implementation only has 1 attribute (number of GC threads) | |
2054 // The type is 'I' | |
2055 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2056 } | |
2057 JVM_END | |
2058 | |
2059 // Dump heap - Returns 0 if succeeds. | |
2060 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
2061 #ifndef SERVICES_KERNEL | |
2062 ResourceMark rm(THREAD); | |
2063 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2064 if (on == NULL) { | |
2065 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2066 "Output file name cannot be null.", -1); | |
2067 } | |
2068 char* name = java_lang_String::as_utf8_string(on); | |
2069 if (name == NULL) { | |
2070 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2071 "Output file name cannot be null.", -1); | |
2072 } | |
2073 HeapDumper dumper(live ? true : false); | |
2074 if (dumper.dump(name) != 0) { | |
2075 const char* errmsg = dumper.error_as_C_string(); | |
2076 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2077 } | |
2078 return 0; | |
2079 #else // SERVICES_KERNEL | |
2080 return -1; | |
2081 #endif // SERVICES_KERNEL | |
2082 JVM_END | |
2083 | |
2084 jlong Management::ticks_to_ms(jlong ticks) { | |
2085 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2086 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2087 * (double)1000.0); | |
2088 } | |
2089 | |
2090 const struct jmmInterface_1_ jmm_interface = { | |
2091 NULL, | |
2092 NULL, | |
2093 jmm_GetVersion, | |
2094 jmm_GetOptionalSupport, | |
2095 jmm_GetInputArguments, | |
2096 jmm_GetThreadInfo, | |
2097 jmm_GetInputArgumentArray, | |
2098 jmm_GetMemoryPools, | |
2099 jmm_GetMemoryManagers, | |
2100 jmm_GetMemoryPoolUsage, | |
2101 jmm_GetPeakMemoryPoolUsage, | |
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2102 jmm_GetThreadAllocatedMemory, |
0 | 2103 jmm_GetMemoryUsage, |
2104 jmm_GetLongAttribute, | |
2105 jmm_GetBoolAttribute, | |
2106 jmm_SetBoolAttribute, | |
2107 jmm_GetLongAttributes, | |
2108 jmm_FindMonitorDeadlockedThreads, | |
2109 jmm_GetThreadCpuTime, | |
2110 jmm_GetVMGlobalNames, | |
2111 jmm_GetVMGlobals, | |
2112 jmm_GetInternalThreadTimes, | |
2113 jmm_ResetStatistic, | |
2114 jmm_SetPoolSensor, | |
2115 jmm_SetPoolThreshold, | |
2116 jmm_GetPoolCollectionUsage, | |
2117 jmm_GetGCExtAttributeInfo, | |
2118 jmm_GetLastGCStat, | |
2119 jmm_GetThreadCpuTimeWithKind, | |
2100
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2120 jmm_GetThreadCpuTimesWithKind, |
0 | 2121 jmm_DumpHeap0, |
2122 jmm_FindDeadlockedThreads, | |
2123 jmm_SetVMGlobal, | |
2124 NULL, | |
2125 jmm_DumpThreads | |
2126 }; | |
2127 | |
2128 void* Management::get_jmm_interface(int version) { | |
2129 if (version == JMM_VERSION_1_0) { | |
2130 return (void*) &jmm_interface; | |
2131 } | |
2132 return NULL; | |
2133 } |