Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 21231:0bb06deee33b
Check for null in LabelOp#setIncomingValues and JumpOp#setOutgoingValues.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Tue, 05 May 2015 12:12:33 +0200 |
parents | 7848fc12602b |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "compiler/compileBroker.hpp" | |
28 #include "memory/iterator.hpp" | |
29 #include "memory/oopFactory.hpp" | |
30 #include "memory/resourceArea.hpp" | |
31 #include "oops/klass.hpp" | |
32 #include "oops/objArrayKlass.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "runtime/arguments.hpp" | |
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35 #include "runtime/globals.hpp" |
1972 | 36 #include "runtime/handles.inline.hpp" |
37 #include "runtime/interfaceSupport.hpp" | |
38 #include "runtime/javaCalls.hpp" | |
39 #include "runtime/jniHandles.hpp" | |
40 #include "runtime/os.hpp" | |
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41 #include "runtime/serviceThread.hpp" |
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42 #include "runtime/thread.inline.hpp" |
1972 | 43 #include "services/classLoadingService.hpp" |
4133 | 44 #include "services/diagnosticCommand.hpp" |
45 #include "services/diagnosticFramework.hpp" | |
1972 | 46 #include "services/heapDumper.hpp" |
4133 | 47 #include "services/jmm.h" |
1972 | 48 #include "services/lowMemoryDetector.hpp" |
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49 #include "services/gcNotifier.hpp" |
6197 | 50 #include "services/nmtDCmd.hpp" |
1972 | 51 #include "services/management.hpp" |
52 #include "services/memoryManager.hpp" | |
53 #include "services/memoryPool.hpp" | |
54 #include "services/memoryService.hpp" | |
55 #include "services/runtimeService.hpp" | |
56 #include "services/threadService.hpp" | |
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57 #include "utilities/macros.hpp" |
0 | 58 |
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59 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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60 |
0 | 61 PerfVariable* Management::_begin_vm_creation_time = NULL; |
62 PerfVariable* Management::_end_vm_creation_time = NULL; | |
63 PerfVariable* Management::_vm_init_done_time = NULL; | |
64 | |
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65 Klass* Management::_sensor_klass = NULL; |
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66 Klass* Management::_threadInfo_klass = NULL; |
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67 Klass* Management::_memoryUsage_klass = NULL; |
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68 Klass* Management::_memoryPoolMXBean_klass = NULL; |
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69 Klass* Management::_memoryManagerMXBean_klass = NULL; |
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70 Klass* Management::_garbageCollectorMXBean_klass = NULL; |
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71 Klass* Management::_managementFactory_klass = NULL; |
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72 Klass* Management::_garbageCollectorImpl_klass = NULL; |
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73 Klass* Management::_gcInfo_klass = NULL; |
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74 Klass* Management::_diagnosticCommandImpl_klass = NULL; |
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75 Klass* Management::_managementFactoryHelper_klass = NULL; |
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76 |
0 | 77 |
78 jmmOptionalSupport Management::_optional_support = {0}; | |
79 TimeStamp Management::_stamp; | |
80 | |
81 void management_init() { | |
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82 #if INCLUDE_MANAGEMENT |
0 | 83 Management::init(); |
84 ThreadService::init(); | |
85 RuntimeService::init(); | |
86 ClassLoadingService::init(); | |
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87 #else |
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88 ThreadService::init(); |
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89 // Make sure the VM version is initialized |
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90 // This is normally called by RuntimeService::init(). |
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91 // Since that is conditionalized out, we need to call it here. |
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92 Abstract_VM_Version::initialize(); |
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93 #endif // INCLUDE_MANAGEMENT |
0 | 94 } |
95 | |
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96 #if INCLUDE_MANAGEMENT |
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97 |
0 | 98 void Management::init() { |
99 EXCEPTION_MARK; | |
100 | |
101 // These counters are for java.lang.management API support. | |
102 // They are created even if -XX:-UsePerfData is set and in | |
103 // that case, they will be allocated on C heap. | |
104 | |
105 _begin_vm_creation_time = | |
106 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
107 PerfData::U_None, CHECK); | |
108 | |
109 _end_vm_creation_time = | |
110 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
111 PerfData::U_None, CHECK); | |
112 | |
113 _vm_init_done_time = | |
114 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
115 PerfData::U_None, CHECK); | |
116 | |
117 // Initialize optional support | |
118 _optional_support.isLowMemoryDetectionSupported = 1; | |
119 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
120 _optional_support.isThreadContentionMonitoringSupported = 1; | |
121 | |
122 if (os::is_thread_cpu_time_supported()) { | |
123 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
124 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
125 } else { | |
126 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
127 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
128 } | |
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129 |
0 | 130 _optional_support.isBootClassPathSupported = 1; |
131 _optional_support.isObjectMonitorUsageSupported = 1; | |
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132 #if INCLUDE_SERVICES |
0 | 133 // This depends on the heap inspector |
134 _optional_support.isSynchronizerUsageSupported = 1; | |
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135 #endif // INCLUDE_SERVICES |
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136 _optional_support.isThreadAllocatedMemorySupported = 1; |
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137 _optional_support.isRemoteDiagnosticCommandsSupported = 1; |
4133 | 138 |
4773 | 139 // Registration of the diagnostic commands |
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140 DCmdRegistrant::register_dcmds(); |
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141 DCmdRegistrant::register_dcmds_ext(); |
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142 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI |
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143 | DCmd_Source_MBean; |
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144 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(full_export, true, false)); |
0 | 145 } |
146 | |
147 void Management::initialize(TRAPS) { | |
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148 // Start the service thread |
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149 ServiceThread::initialize(); |
0 | 150 |
151 if (ManagementServer) { | |
152 ResourceMark rm(THREAD); | |
153 HandleMark hm(THREAD); | |
154 | |
155 // Load and initialize the sun.management.Agent class | |
156 // invoke startAgent method to start the management server | |
157 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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158 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
0 | 159 loader, |
160 Handle(), | |
161 true, | |
162 CHECK); | |
163 instanceKlassHandle ik (THREAD, k); | |
164 | |
165 JavaValue result(T_VOID); | |
166 JavaCalls::call_static(&result, | |
167 ik, | |
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168 vmSymbols::startAgent_name(), |
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169 vmSymbols::void_method_signature(), |
0 | 170 CHECK); |
171 } | |
172 } | |
173 | |
174 void Management::get_optional_support(jmmOptionalSupport* support) { | |
175 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
176 } | |
177 | |
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178 Klass* Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
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179 Klass* k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
0 | 180 instanceKlassHandle ik (THREAD, k); |
181 if (ik->should_be_initialized()) { | |
182 ik->initialize(CHECK_NULL); | |
183 } | |
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184 // If these classes change to not be owned by the boot loader, they need |
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185 // to be walked to keep their class loader alive in oops_do. |
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186 assert(ik->class_loader() == NULL, "need to follow in oops_do"); |
0 | 187 return ik(); |
188 } | |
189 | |
190 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
191 // if the performance counter is not initialized, | |
192 // then vm initialization failed; simply return. | |
193 if (_begin_vm_creation_time == NULL) return; | |
194 | |
195 _begin_vm_creation_time->set_value(begin); | |
196 _end_vm_creation_time->set_value(begin + duration); | |
197 PerfMemory::set_accessible(true); | |
198 } | |
199 | |
200 jlong Management::timestamp() { | |
201 TimeStamp t; | |
202 t.update(); | |
203 return t.ticks() - _stamp.ticks(); | |
204 } | |
205 | |
206 void Management::oops_do(OopClosure* f) { | |
207 MemoryService::oops_do(f); | |
208 ThreadService::oops_do(f); | |
209 } | |
210 | |
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211 Klass* Management::java_lang_management_ThreadInfo_klass(TRAPS) { |
0 | 212 if (_threadInfo_klass == NULL) { |
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213 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
0 | 214 } |
215 return _threadInfo_klass; | |
216 } | |
217 | |
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218 Klass* Management::java_lang_management_MemoryUsage_klass(TRAPS) { |
0 | 219 if (_memoryUsage_klass == NULL) { |
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220 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
0 | 221 } |
222 return _memoryUsage_klass; | |
223 } | |
224 | |
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225 Klass* Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { |
0 | 226 if (_memoryPoolMXBean_klass == NULL) { |
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227 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
0 | 228 } |
229 return _memoryPoolMXBean_klass; | |
230 } | |
231 | |
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232 Klass* Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { |
0 | 233 if (_memoryManagerMXBean_klass == NULL) { |
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234 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
0 | 235 } |
236 return _memoryManagerMXBean_klass; | |
237 } | |
238 | |
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239 Klass* Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { |
0 | 240 if (_garbageCollectorMXBean_klass == NULL) { |
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241 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
0 | 242 } |
243 return _garbageCollectorMXBean_klass; | |
244 } | |
245 | |
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246 Klass* Management::sun_management_Sensor_klass(TRAPS) { |
0 | 247 if (_sensor_klass == NULL) { |
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248 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
0 | 249 } |
250 return _sensor_klass; | |
251 } | |
252 | |
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253 Klass* Management::sun_management_ManagementFactory_klass(TRAPS) { |
0 | 254 if (_managementFactory_klass == NULL) { |
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255 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
0 | 256 } |
257 return _managementFactory_klass; | |
258 } | |
259 | |
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260 Klass* Management::sun_management_GarbageCollectorImpl_klass(TRAPS) { |
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261 if (_garbageCollectorImpl_klass == NULL) { |
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262 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL); |
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263 } |
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264 return _garbageCollectorImpl_klass; |
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265 } |
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266 |
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267 Klass* Management::com_sun_management_GcInfo_klass(TRAPS) { |
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268 if (_gcInfo_klass == NULL) { |
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269 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); |
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270 } |
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271 return _gcInfo_klass; |
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272 } |
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273 |
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274 Klass* Management::sun_management_DiagnosticCommandImpl_klass(TRAPS) { |
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275 if (_diagnosticCommandImpl_klass == NULL) { |
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276 _diagnosticCommandImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_DiagnosticCommandImpl(), CHECK_NULL); |
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277 } |
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278 return _diagnosticCommandImpl_klass; |
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279 } |
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280 |
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281 Klass* Management::sun_management_ManagementFactoryHelper_klass(TRAPS) { |
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282 if (_managementFactoryHelper_klass == NULL) { |
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283 _managementFactoryHelper_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactoryHelper(), CHECK_NULL); |
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284 } |
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285 return _managementFactoryHelper_klass; |
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286 } |
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287 |
0 | 288 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
289 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
290 | |
291 jlong contended_time; | |
292 jlong waited_time; | |
293 if (ThreadService::is_thread_monitoring_contention()) { | |
294 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
295 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
296 } else { | |
297 // set them to -1 if thread contention monitoring is disabled. | |
298 contended_time = max_julong; | |
299 waited_time = max_julong; | |
300 } | |
301 | |
302 int thread_status = snapshot->thread_status(); | |
303 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
304 if (snapshot->is_ext_suspended()) { | |
305 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
306 } | |
307 if (snapshot->is_in_native()) { | |
308 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
309 } | |
310 | |
311 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
312 Handle stacktrace_h; | |
313 if (st != NULL) { | |
314 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
315 } else { | |
316 stacktrace_h = Handle(); | |
317 } | |
318 | |
319 args->push_oop(snapshot_thread); | |
320 args->push_int(thread_status); | |
321 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
322 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
323 args->push_long(snapshot->contended_enter_count()); | |
324 args->push_long(contended_time); | |
325 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
326 args->push_long(waited_time); | |
327 args->push_oop(stacktrace_h); | |
328 } | |
329 | |
330 // Helper function to construct a ThreadInfo object | |
331 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
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332 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
0 | 333 instanceKlassHandle ik (THREAD, k); |
334 | |
335 JavaValue result(T_VOID); | |
336 JavaCallArguments args(14); | |
337 | |
338 // First allocate a ThreadObj object and | |
339 // push the receiver as the first argument | |
340 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
341 args.push_oop(element); | |
342 | |
343 // initialize the arguments for the ThreadInfo constructor | |
344 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
345 | |
346 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
347 JavaCalls::call_special(&result, | |
348 ik, | |
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349 vmSymbols::object_initializer_name(), |
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350 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
0 | 351 &args, |
352 CHECK_NULL); | |
353 | |
354 return (instanceOop) element(); | |
355 } | |
356 | |
357 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
358 objArrayHandle monitors_array, | |
359 typeArrayHandle depths_array, | |
360 objArrayHandle synchronizers_array, | |
361 TRAPS) { | |
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362 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
0 | 363 instanceKlassHandle ik (THREAD, k); |
364 | |
365 JavaValue result(T_VOID); | |
366 JavaCallArguments args(17); | |
367 | |
368 // First allocate a ThreadObj object and | |
369 // push the receiver as the first argument | |
370 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
371 args.push_oop(element); | |
372 | |
373 // initialize the arguments for the ThreadInfo constructor | |
374 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
375 | |
376 // push the locked monitors and synchronizers in the arguments | |
377 args.push_oop(monitors_array); | |
378 args.push_oop(depths_array); | |
379 args.push_oop(synchronizers_array); | |
380 | |
381 // Call ThreadInfo constructor with locked monitors and synchronizers | |
382 JavaCalls::call_special(&result, | |
383 ik, | |
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384 vmSymbols::object_initializer_name(), |
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385 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
0 | 386 &args, |
387 CHECK_NULL); | |
388 | |
389 return (instanceOop) element(); | |
390 } | |
391 | |
392 | |
393 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
394 if (mgr == NULL) { | |
395 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
396 } | |
397 oop mgr_obj = JNIHandles::resolve(mgr); | |
398 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
399 | |
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400 Klass* k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); |
0 | 401 if (!h->is_a(k)) { |
402 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
403 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
404 NULL); | |
405 } | |
406 | |
407 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
408 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
409 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
410 "Invalid GC memory manager", | |
411 NULL); | |
412 } | |
413 return (GCMemoryManager*) gc; | |
414 } | |
415 | |
416 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
417 if (obj == NULL) { | |
418 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
419 } | |
420 | |
421 oop pool_obj = JNIHandles::resolve(obj); | |
422 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
423 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
424 | |
425 return MemoryService::get_memory_pool(ph); | |
426 } | |
427 | |
20393 | 428 #endif // INCLUDE_MANAGEMENT |
429 | |
0 | 430 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { |
431 int num_threads = ids_ah->length(); | |
432 | |
433 // Validate input thread IDs | |
434 int i = 0; | |
435 for (i = 0; i < num_threads; i++) { | |
436 jlong tid = ids_ah->long_at(i); | |
437 if (tid <= 0) { | |
438 // throw exception if invalid thread id. | |
439 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
440 "Invalid thread ID entry"); | |
441 } | |
442 } | |
443 } | |
444 | |
20393 | 445 #if INCLUDE_MANAGEMENT |
446 | |
0 | 447 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { |
448 // check if the element of infoArray is of type ThreadInfo class | |
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449 Klass* threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); |
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450 Klass* element_klass = ObjArrayKlass::cast(infoArray_h->klass())->element_klass(); |
0 | 451 if (element_klass != threadinfo_klass) { |
452 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
453 "infoArray element type is not ThreadInfo class"); | |
454 } | |
455 } | |
456 | |
457 | |
458 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
459 if (obj == NULL) { | |
460 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
461 } | |
462 | |
463 oop mgr_obj = JNIHandles::resolve(obj); | |
464 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
465 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
466 | |
467 return MemoryService::get_memory_manager(mh); | |
468 } | |
469 | |
470 // Returns a version string and sets major and minor version if | |
471 // the input parameters are non-null. | |
472 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
473 return JMM_VERSION; | |
474 JVM_END | |
475 | |
476 // Gets the list of VM monitoring and management optional supports | |
477 // Returns 0 if succeeded; otherwise returns non-zero. | |
478 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
479 if (support == NULL) { | |
480 return -1; | |
481 } | |
482 Management::get_optional_support(support); | |
483 return 0; | |
484 JVM_END | |
485 | |
486 // Returns a java.lang.String object containing the input arguments to the VM. | |
487 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
488 ResourceMark rm(THREAD); | |
489 | |
490 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
491 return NULL; | |
492 } | |
493 | |
494 char** vm_flags = Arguments::jvm_flags_array(); | |
495 char** vm_args = Arguments::jvm_args_array(); | |
496 int num_flags = Arguments::num_jvm_flags(); | |
497 int num_args = Arguments::num_jvm_args(); | |
498 | |
499 size_t length = 1; // null terminator | |
500 int i; | |
501 for (i = 0; i < num_flags; i++) { | |
502 length += strlen(vm_flags[i]); | |
503 } | |
504 for (i = 0; i < num_args; i++) { | |
505 length += strlen(vm_args[i]); | |
506 } | |
507 // add a space between each argument | |
508 length += num_flags + num_args - 1; | |
509 | |
510 // Return the list of input arguments passed to the VM | |
511 // and preserve the order that the VM processes. | |
512 char* args = NEW_RESOURCE_ARRAY(char, length); | |
513 args[0] = '\0'; | |
514 // concatenate all jvm_flags | |
515 if (num_flags > 0) { | |
516 strcat(args, vm_flags[0]); | |
517 for (i = 1; i < num_flags; i++) { | |
518 strcat(args, " "); | |
519 strcat(args, vm_flags[i]); | |
520 } | |
521 } | |
522 | |
523 if (num_args > 0 && num_flags > 0) { | |
524 // append a space if args already contains one or more jvm_flags | |
525 strcat(args, " "); | |
526 } | |
527 | |
528 // concatenate all jvm_args | |
529 if (num_args > 0) { | |
530 strcat(args, vm_args[0]); | |
531 for (i = 1; i < num_args; i++) { | |
532 strcat(args, " "); | |
533 strcat(args, vm_args[i]); | |
534 } | |
535 } | |
536 | |
537 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
538 return JNIHandles::make_local(env, hargs()); | |
539 JVM_END | |
540 | |
541 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
542 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
543 ResourceMark rm(THREAD); | |
544 | |
545 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
546 return NULL; | |
547 } | |
548 | |
549 char** vm_flags = Arguments::jvm_flags_array(); | |
550 char** vm_args = Arguments::jvm_args_array(); | |
551 int num_flags = Arguments::num_jvm_flags(); | |
552 int num_args = Arguments::num_jvm_args(); | |
553 | |
1142 | 554 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
0 | 555 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
556 objArrayHandle result_h(THREAD, r); | |
557 | |
558 int index = 0; | |
559 for (int j = 0; j < num_flags; j++, index++) { | |
560 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
561 result_h->obj_at_put(index, h()); | |
562 } | |
563 for (int i = 0; i < num_args; i++, index++) { | |
564 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
565 result_h->obj_at_put(index, h()); | |
566 } | |
567 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
568 JVM_END | |
569 | |
570 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
571 // one for each memory pool if obj == null; otherwise returns | |
572 // an array of memory pools for a given memory manager if | |
573 // it is a valid memory manager. | |
574 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
575 ResourceMark rm(THREAD); | |
576 | |
577 int num_memory_pools; | |
578 MemoryManager* mgr = NULL; | |
579 if (obj == NULL) { | |
580 num_memory_pools = MemoryService::num_memory_pools(); | |
581 } else { | |
582 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
583 if (mgr == NULL) { | |
584 return NULL; | |
585 } | |
586 num_memory_pools = mgr->num_memory_pools(); | |
587 } | |
588 | |
589 // Allocate the resulting MemoryPoolMXBean[] object | |
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590 Klass* k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); |
0 | 591 instanceKlassHandle ik (THREAD, k); |
592 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
593 objArrayHandle poolArray(THREAD, r); | |
594 | |
595 if (mgr == NULL) { | |
596 // Get all memory pools | |
597 for (int i = 0; i < num_memory_pools; i++) { | |
598 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
599 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
600 instanceHandle ph(THREAD, p); | |
601 poolArray->obj_at_put(i, ph()); | |
602 } | |
603 } else { | |
604 // Get memory pools managed by a given memory manager | |
605 for (int i = 0; i < num_memory_pools; i++) { | |
606 MemoryPool* pool = mgr->get_memory_pool(i); | |
607 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
608 instanceHandle ph(THREAD, p); | |
609 poolArray->obj_at_put(i, ph()); | |
610 } | |
611 } | |
612 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
613 JVM_END | |
614 | |
615 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
616 // one for each memory manager if obj == null; otherwise returns | |
617 // an array of memory managers for a given memory pool if | |
618 // it is a valid memory pool. | |
619 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
620 ResourceMark rm(THREAD); | |
621 | |
622 int num_mgrs; | |
623 MemoryPool* pool = NULL; | |
624 if (obj == NULL) { | |
625 num_mgrs = MemoryService::num_memory_managers(); | |
626 } else { | |
627 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
628 if (pool == NULL) { | |
629 return NULL; | |
630 } | |
631 num_mgrs = pool->num_memory_managers(); | |
632 } | |
633 | |
634 // Allocate the resulting MemoryManagerMXBean[] object | |
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635 Klass* k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); |
0 | 636 instanceKlassHandle ik (THREAD, k); |
637 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
638 objArrayHandle mgrArray(THREAD, r); | |
639 | |
640 if (pool == NULL) { | |
641 // Get all memory managers | |
642 for (int i = 0; i < num_mgrs; i++) { | |
643 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
644 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
645 instanceHandle ph(THREAD, p); | |
646 mgrArray->obj_at_put(i, ph()); | |
647 } | |
648 } else { | |
649 // Get memory managers for a given memory pool | |
650 for (int i = 0; i < num_mgrs; i++) { | |
651 MemoryManager* mgr = pool->get_memory_manager(i); | |
652 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
653 instanceHandle ph(THREAD, p); | |
654 mgrArray->obj_at_put(i, ph()); | |
655 } | |
656 } | |
657 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
658 JVM_END | |
659 | |
660 | |
661 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
662 // of a given memory pool. | |
663 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
664 ResourceMark rm(THREAD); | |
665 | |
666 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
667 if (pool != NULL) { | |
668 MemoryUsage usage = pool->get_memory_usage(); | |
669 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
670 return JNIHandles::make_local(env, h()); | |
671 } else { | |
672 return NULL; | |
673 } | |
674 JVM_END | |
675 | |
676 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
677 // of a given memory pool. | |
678 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
679 ResourceMark rm(THREAD); | |
680 | |
681 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
682 if (pool != NULL) { | |
683 MemoryUsage usage = pool->get_peak_memory_usage(); | |
684 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
685 return JNIHandles::make_local(env, h()); | |
686 } else { | |
687 return NULL; | |
688 } | |
689 JVM_END | |
690 | |
691 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
692 // of a given memory pool after most recent GC. | |
693 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
694 ResourceMark rm(THREAD); | |
695 | |
696 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
697 if (pool != NULL && pool->is_collected_pool()) { | |
698 MemoryUsage usage = pool->get_last_collection_usage(); | |
699 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
700 return JNIHandles::make_local(env, h()); | |
701 } else { | |
702 return NULL; | |
703 } | |
704 JVM_END | |
705 | |
706 // Sets the memory pool sensor for a threshold type | |
707 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
708 if (obj == NULL || sensorObj == NULL) { | |
709 THROW(vmSymbols::java_lang_NullPointerException()); | |
710 } | |
711 | |
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712 Klass* sensor_klass = Management::sun_management_Sensor_klass(CHECK); |
0 | 713 oop s = JNIHandles::resolve(sensorObj); |
714 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
715 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
716 if (!sensor_h->is_a(sensor_klass)) { | |
717 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
718 "Sensor is not an instance of sun.management.Sensor class"); | |
719 } | |
720 | |
721 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
722 assert(mpool != NULL, "MemoryPool should exist"); | |
723 | |
724 switch (type) { | |
725 case JMM_USAGE_THRESHOLD_HIGH: | |
726 case JMM_USAGE_THRESHOLD_LOW: | |
727 // have only one sensor for threshold high and low | |
728 mpool->set_usage_sensor_obj(sensor_h); | |
729 break; | |
730 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
731 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
732 // have only one sensor for threshold high and low | |
733 mpool->set_gc_usage_sensor_obj(sensor_h); | |
734 break; | |
735 default: | |
736 assert(false, "Unrecognized type"); | |
737 } | |
738 | |
739 JVM_END | |
740 | |
741 | |
742 // Sets the threshold of a given memory pool. | |
743 // Returns the previous threshold. | |
744 // | |
745 // Input parameters: | |
746 // pool - the MemoryPoolMXBean object | |
747 // type - threshold type | |
748 // threshold - the new threshold (must not be negative) | |
749 // | |
750 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
751 if (threshold < 0) { | |
752 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
753 "Invalid threshold value", | |
754 -1); | |
755 } | |
756 | |
489
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757 if ((size_t)threshold > max_uintx) { |
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758 stringStream st; |
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759 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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760 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
0 | 761 } |
762 | |
763 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
764 assert(pool != NULL, "MemoryPool should exist"); | |
765 | |
766 jlong prev = 0; | |
767 switch (type) { | |
768 case JMM_USAGE_THRESHOLD_HIGH: | |
769 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
770 return -1; | |
771 } | |
772 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
773 break; | |
774 | |
775 case JMM_USAGE_THRESHOLD_LOW: | |
776 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
777 return -1; | |
778 } | |
779 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
780 break; | |
781 | |
782 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
783 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
784 return -1; | |
785 } | |
786 // return and the new threshold is effective for the next GC | |
787 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
788 | |
789 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
790 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
791 return -1; | |
792 } | |
793 // return and the new threshold is effective for the next GC | |
794 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
795 | |
796 default: | |
797 assert(false, "Unrecognized type"); | |
798 return -1; | |
799 } | |
800 | |
801 // When the threshold is changed, reevaluate if the low memory | |
802 // detection is enabled. | |
803 if (prev != threshold) { | |
804 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
805 LowMemoryDetector::detect_low_memory(pool); | |
806 } | |
807 return prev; | |
808 JVM_END | |
809 | |
810 // Returns a java/lang/management/MemoryUsage object representing | |
811 // the memory usage for the heap or non-heap memory. | |
812 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
813 ResourceMark rm(THREAD); | |
814 | |
815 // Calculate the memory usage | |
816 size_t total_init = 0; | |
817 size_t total_used = 0; | |
818 size_t total_committed = 0; | |
819 size_t total_max = 0; | |
820 bool has_undefined_init_size = false; | |
821 bool has_undefined_max_size = false; | |
822 | |
823 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
824 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
825 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
826 MemoryUsage u = pool->get_memory_usage(); | |
827 total_used += u.used(); | |
828 total_committed += u.committed(); | |
829 | |
830 if (u.init_size() == (size_t)-1) { | |
831 has_undefined_init_size = true; | |
832 } | |
833 if (!has_undefined_init_size) { | |
834 total_init += u.init_size(); | |
835 } | |
836 | |
837 if (u.max_size() == (size_t)-1) { | |
838 has_undefined_max_size = true; | |
839 } | |
840 if (!has_undefined_max_size) { | |
841 total_max += u.max_size(); | |
842 } | |
843 } | |
844 } | |
845 | |
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846 // if any one of the memory pool has undefined init_size or max_size, |
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847 // set it to -1 |
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848 if (has_undefined_init_size) { |
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849 total_init = (size_t)-1; |
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850 } |
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851 if (has_undefined_max_size) { |
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852 total_max = (size_t)-1; |
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853 } |
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854 |
1064 | 855 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
0 | 856 total_used, |
857 total_committed, | |
858 (heap ? Universe::heap()->max_capacity() : total_max)); | |
859 | |
860 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
861 return JNIHandles::make_local(env, obj()); | |
862 JVM_END | |
863 | |
864 // Returns the boolean value of a given attribute. | |
865 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
866 switch (att) { | |
867 case JMM_VERBOSE_GC: | |
868 return MemoryService::get_verbose(); | |
869 case JMM_VERBOSE_CLASS: | |
870 return ClassLoadingService::get_verbose(); | |
871 case JMM_THREAD_CONTENTION_MONITORING: | |
872 return ThreadService::is_thread_monitoring_contention(); | |
873 case JMM_THREAD_CPU_TIME: | |
874 return ThreadService::is_thread_cpu_time_enabled(); | |
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875 case JMM_THREAD_ALLOCATED_MEMORY: |
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876 return ThreadService::is_thread_allocated_memory_enabled(); |
0 | 877 default: |
878 assert(0, "Unrecognized attribute"); | |
879 return false; | |
880 } | |
881 JVM_END | |
882 | |
883 // Sets the given boolean attribute and returns the previous value. | |
884 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
885 switch (att) { | |
886 case JMM_VERBOSE_GC: | |
887 return MemoryService::set_verbose(flag != 0); | |
888 case JMM_VERBOSE_CLASS: | |
889 return ClassLoadingService::set_verbose(flag != 0); | |
890 case JMM_THREAD_CONTENTION_MONITORING: | |
891 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
892 case JMM_THREAD_CPU_TIME: | |
893 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
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894 case JMM_THREAD_ALLOCATED_MEMORY: |
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895 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
0 | 896 default: |
897 assert(0, "Unrecognized attribute"); | |
898 return false; | |
899 } | |
900 JVM_END | |
901 | |
902 | |
903 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
904 switch (att) { | |
905 case JMM_GC_TIME_MS: | |
906 return mgr->gc_time_ms(); | |
907 | |
908 case JMM_GC_COUNT: | |
909 return mgr->gc_count(); | |
910 | |
911 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
912 // current implementation only has 1 ext attribute | |
913 return 1; | |
914 | |
915 default: | |
916 assert(0, "Unrecognized GC attribute"); | |
917 return -1; | |
918 } | |
919 } | |
920 | |
921 class VmThreadCountClosure: public ThreadClosure { | |
922 private: | |
923 int _count; | |
924 public: | |
925 VmThreadCountClosure() : _count(0) {}; | |
926 void do_thread(Thread* thread); | |
927 int count() { return _count; } | |
928 }; | |
929 | |
930 void VmThreadCountClosure::do_thread(Thread* thread) { | |
931 // exclude externally visible JavaThreads | |
932 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
933 return; | |
934 } | |
935 | |
936 _count++; | |
937 } | |
938 | |
939 static jint get_vm_thread_count() { | |
940 VmThreadCountClosure vmtcc; | |
941 { | |
942 MutexLockerEx ml(Threads_lock); | |
943 Threads::threads_do(&vmtcc); | |
944 } | |
945 | |
946 return vmtcc.count(); | |
947 } | |
948 | |
949 static jint get_num_flags() { | |
950 // last flag entry is always NULL, so subtract 1 | |
951 int nFlags = (int) Flag::numFlags - 1; | |
952 int count = 0; | |
953 for (int i = 0; i < nFlags; i++) { | |
954 Flag* flag = &Flag::flags[i]; | |
350 | 955 // Exclude the locked (diagnostic, experimental) flags |
0 | 956 if (flag->is_unlocked() || flag->is_unlocker()) { |
957 count++; | |
958 } | |
959 } | |
960 return count; | |
961 } | |
962 | |
963 static jlong get_long_attribute(jmmLongAttribute att) { | |
964 switch (att) { | |
965 case JMM_CLASS_LOADED_COUNT: | |
966 return ClassLoadingService::loaded_class_count(); | |
967 | |
968 case JMM_CLASS_UNLOADED_COUNT: | |
969 return ClassLoadingService::unloaded_class_count(); | |
970 | |
971 case JMM_THREAD_TOTAL_COUNT: | |
972 return ThreadService::get_total_thread_count(); | |
973 | |
974 case JMM_THREAD_LIVE_COUNT: | |
975 return ThreadService::get_live_thread_count(); | |
976 | |
977 case JMM_THREAD_PEAK_COUNT: | |
978 return ThreadService::get_peak_thread_count(); | |
979 | |
980 case JMM_THREAD_DAEMON_COUNT: | |
981 return ThreadService::get_daemon_thread_count(); | |
982 | |
983 case JMM_JVM_INIT_DONE_TIME_MS: | |
984 return Management::vm_init_done_time(); | |
985 | |
12997
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986 case JMM_JVM_UPTIME_MS: |
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987 return Management::ticks_to_ms(os::elapsed_counter()); |
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988 |
0 | 989 case JMM_COMPILE_TOTAL_TIME_MS: |
990 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
991 | |
992 case JMM_OS_PROCESS_ID: | |
993 return os::current_process_id(); | |
994 | |
995 // Hotspot-specific counters | |
996 case JMM_CLASS_LOADED_BYTES: | |
997 return ClassLoadingService::loaded_class_bytes(); | |
998 | |
999 case JMM_CLASS_UNLOADED_BYTES: | |
1000 return ClassLoadingService::unloaded_class_bytes(); | |
1001 | |
1002 case JMM_SHARED_CLASS_LOADED_COUNT: | |
1003 return ClassLoadingService::loaded_shared_class_count(); | |
1004 | |
1005 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
1006 return ClassLoadingService::unloaded_shared_class_count(); | |
1007 | |
1008 | |
1009 case JMM_SHARED_CLASS_LOADED_BYTES: | |
1010 return ClassLoadingService::loaded_shared_class_bytes(); | |
1011 | |
1012 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
1013 return ClassLoadingService::unloaded_shared_class_bytes(); | |
1014 | |
1015 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
1016 return ClassLoader::classloader_time_ms(); | |
1017 | |
1018 case JMM_VM_GLOBAL_COUNT: | |
1019 return get_num_flags(); | |
1020 | |
1021 case JMM_SAFEPOINT_COUNT: | |
1022 return RuntimeService::safepoint_count(); | |
1023 | |
1024 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
1025 return RuntimeService::safepoint_sync_time_ms(); | |
1026 | |
1027 case JMM_TOTAL_STOPPED_TIME_MS: | |
1028 return RuntimeService::safepoint_time_ms(); | |
1029 | |
1030 case JMM_TOTAL_APP_TIME_MS: | |
1031 return RuntimeService::application_time_ms(); | |
1032 | |
1033 case JMM_VM_THREAD_COUNT: | |
1034 return get_vm_thread_count(); | |
1035 | |
1036 case JMM_CLASS_INIT_TOTAL_COUNT: | |
1037 return ClassLoader::class_init_count(); | |
1038 | |
1039 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
1040 return ClassLoader::class_init_time_ms(); | |
1041 | |
1042 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
1043 return ClassLoader::class_verify_time_ms(); | |
1044 | |
1045 case JMM_METHOD_DATA_SIZE_BYTES: | |
1046 return ClassLoadingService::class_method_data_size(); | |
1047 | |
1048 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
1049 return os::physical_memory(); | |
1050 | |
1051 default: | |
1052 return -1; | |
1053 } | |
1054 } | |
1055 | |
1056 | |
1057 // Returns the long value of a given attribute. | |
1058 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
1059 if (obj == NULL) { | |
1060 return get_long_attribute(att); | |
1061 } else { | |
1062 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
1063 if (mgr != NULL) { | |
1064 return get_gc_attribute(mgr, att); | |
1065 } | |
1066 } | |
1067 return -1; | |
1068 JVM_END | |
1069 | |
1070 // Gets the value of all attributes specified in the given array | |
1071 // and sets the value in the result array. | |
1072 // Returns the number of attributes found. | |
1073 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
1074 jobject obj, | |
1075 jmmLongAttribute* atts, | |
1076 jint count, | |
1077 jlong* result)) | |
1078 | |
1079 int num_atts = 0; | |
1080 if (obj == NULL) { | |
1081 for (int i = 0; i < count; i++) { | |
1082 result[i] = get_long_attribute(atts[i]); | |
1083 if (result[i] != -1) { | |
1084 num_atts++; | |
1085 } | |
1086 } | |
1087 } else { | |
1088 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
1089 for (int i = 0; i < count; i++) { | |
1090 result[i] = get_gc_attribute(mgr, atts[i]); | |
1091 if (result[i] != -1) { | |
1092 num_atts++; | |
1093 } | |
1094 } | |
1095 } | |
1096 return num_atts; | |
1097 JVM_END | |
1098 | |
1099 // Helper function to do thread dump for a specific list of threads | |
1100 static void do_thread_dump(ThreadDumpResult* dump_result, | |
1101 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
1102 int num_threads, | |
1103 int max_depth, | |
1104 bool with_locked_monitors, | |
1105 bool with_locked_synchronizers, | |
1106 TRAPS) { | |
1107 | |
1108 // First get an array of threadObj handles. | |
1109 // A JavaThread may terminate before we get the stack trace. | |
1110 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
1111 { | |
1112 MutexLockerEx ml(Threads_lock); | |
1113 for (int i = 0; i < num_threads; i++) { | |
1114 jlong tid = ids_ah->long_at(i); | |
20393 | 1115 JavaThread* jt = Threads::find_java_thread_from_java_tid(tid); |
0 | 1116 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); |
1117 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
1118 thread_handle_array->append(threadObj_h); | |
1119 } | |
1120 } | |
1121 | |
1122 // Obtain thread dumps and thread snapshot information | |
1123 VM_ThreadDump op(dump_result, | |
1124 thread_handle_array, | |
1125 num_threads, | |
1126 max_depth, /* stack depth */ | |
1127 with_locked_monitors, | |
1128 with_locked_synchronizers); | |
1129 VMThread::execute(&op); | |
1130 } | |
1131 | |
1132 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
1133 // for the thread ID specified in the corresponding entry in | |
1134 // the given array of thread IDs; or NULL if the thread does not exist | |
1135 // or has terminated. | |
1136 // | |
1137 // Input parameters: | |
1138 // ids - array of thread IDs | |
1139 // maxDepth - the maximum depth of stack traces to be dumped: | |
1140 // maxDepth == -1 requests to dump entire stack trace. | |
1141 // maxDepth == 0 requests no stack trace. | |
1142 // infoArray - array of ThreadInfo objects | |
1143 // | |
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1144 // QQQ - Why does this method return a value instead of void? |
0 | 1145 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
1146 // Check if threads is null | |
1147 if (ids == NULL || infoArray == NULL) { | |
1148 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
1149 } | |
1150 | |
1151 if (maxDepth < -1) { | |
1152 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1153 "Invalid maxDepth", -1); | |
1154 } | |
1155 | |
1156 ResourceMark rm(THREAD); | |
1157 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
1158 typeArrayHandle ids_ah(THREAD, ta); | |
1159 | |
1160 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
1161 objArrayOop oa = objArrayOop(infoArray_obj); | |
1162 objArrayHandle infoArray_h(THREAD, oa); | |
1163 | |
1164 // validate the thread id array | |
1165 validate_thread_id_array(ids_ah, CHECK_0); | |
1166 | |
1167 // validate the ThreadInfo[] parameters | |
1168 validate_thread_info_array(infoArray_h, CHECK_0); | |
1169 | |
1170 // infoArray must be of the same length as the given array of thread IDs | |
1171 int num_threads = ids_ah->length(); | |
1172 if (num_threads != infoArray_h->length()) { | |
1173 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1174 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
1175 } | |
1176 | |
1177 if (JDK_Version::is_gte_jdk16x_version()) { | |
1178 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1179 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
1180 } | |
1181 | |
1182 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
1183 // GC may occur after the thread snapshots are taken but before | |
1184 // this function returns. The threadObj and other oops kept | |
1185 // in the ThreadSnapshot are marked and adjusted during GC. | |
1186 ThreadDumpResult dump_result(num_threads); | |
1187 | |
1188 if (maxDepth == 0) { | |
1189 // no stack trace dumped - do not need to stop the world | |
1190 { | |
1191 MutexLockerEx ml(Threads_lock); | |
1192 for (int i = 0; i < num_threads; i++) { | |
1193 jlong tid = ids_ah->long_at(i); | |
20393 | 1194 JavaThread* jt = Threads::find_java_thread_from_java_tid(tid); |
0 | 1195 ThreadSnapshot* ts; |
1196 if (jt == NULL) { | |
1197 // if the thread does not exist or now it is terminated, | |
1198 // create dummy snapshot | |
1199 ts = new ThreadSnapshot(); | |
1200 } else { | |
1201 ts = new ThreadSnapshot(jt); | |
1202 } | |
1203 dump_result.add_thread_snapshot(ts); | |
1204 } | |
1205 } | |
1206 } else { | |
1207 // obtain thread dump with the specific list of threads with stack trace | |
1208 do_thread_dump(&dump_result, | |
1209 ids_ah, | |
1210 num_threads, | |
1211 maxDepth, | |
1212 false, /* no locked monitor */ | |
1213 false, /* no locked synchronizers */ | |
1214 CHECK_0); | |
1215 } | |
1216 | |
1217 int num_snapshots = dump_result.num_snapshots(); | |
1218 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
1219 int index = 0; | |
1220 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
1221 // For each thread, create an java/lang/management/ThreadInfo object | |
1222 // and fill with the thread information | |
1223 | |
1224 if (ts->threadObj() == NULL) { | |
1225 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1226 infoArray_h->obj_at_put(index, NULL); | |
1227 continue; | |
1228 } | |
1229 | |
1230 // Create java.lang.management.ThreadInfo object | |
1231 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
1232 infoArray_h->obj_at_put(index, info_obj); | |
1233 } | |
1234 return 0; | |
1235 JVM_END | |
1236 | |
1237 // Dump thread info for the specified threads. | |
1238 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
1239 // for the thread ID specified in the corresponding entry in | |
1240 // the given array of thread IDs; or NULL if the thread does not exist | |
1241 // or has terminated. | |
1242 // | |
1243 // Input parameter: | |
1244 // ids - array of thread IDs; NULL indicates all live threads | |
1245 // locked_monitors - if true, dump locked object monitors | |
1246 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
1247 // | |
1248 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
1249 ResourceMark rm(THREAD); | |
1250 | |
1251 if (JDK_Version::is_gte_jdk16x_version()) { | |
1252 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
1253 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
1254 } | |
1255 | |
1256 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
1257 int num_threads = (ta != NULL ? ta->length() : 0); | |
1258 typeArrayHandle ids_ah(THREAD, ta); | |
1259 | |
1260 ThreadDumpResult dump_result(num_threads); // can safepoint | |
1261 | |
1262 if (ids_ah() != NULL) { | |
1263 | |
1264 // validate the thread id array | |
1265 validate_thread_id_array(ids_ah, CHECK_NULL); | |
1266 | |
1267 // obtain thread dump of a specific list of threads | |
1268 do_thread_dump(&dump_result, | |
1269 ids_ah, | |
1270 num_threads, | |
1271 -1, /* entire stack */ | |
1272 (locked_monitors ? true : false), /* with locked monitors */ | |
1273 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
1274 CHECK_NULL); | |
1275 } else { | |
1276 // obtain thread dump of all threads | |
1277 VM_ThreadDump op(&dump_result, | |
1278 -1, /* entire stack */ | |
1279 (locked_monitors ? true : false), /* with locked monitors */ | |
1280 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
1281 VMThread::execute(&op); | |
1282 } | |
1283 | |
1284 int num_snapshots = dump_result.num_snapshots(); | |
1285 | |
1286 // create the result ThreadInfo[] object | |
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1287 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
0 | 1288 instanceKlassHandle ik (THREAD, k); |
1289 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
1290 objArrayHandle result_h(THREAD, r); | |
1291 | |
1292 int index = 0; | |
1293 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
1294 if (ts->threadObj() == NULL) { | |
1295 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
1296 result_h->obj_at_put(index, NULL); | |
1297 continue; | |
1298 } | |
1299 | |
1300 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
1301 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
1302 | |
1303 // Create Object[] filled with locked monitors | |
1304 // Create int[] filled with the stack depth where a monitor was locked | |
1305 int num_frames = stacktrace->get_stack_depth(); | |
1306 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
1307 | |
1308 // Count the total number of locked monitors | |
1309 for (int i = 0; i < num_frames; i++) { | |
1310 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
1311 num_locked_monitors += frame->num_locked_monitors(); | |
1312 } | |
1313 | |
1314 objArrayHandle monitors_array; | |
1315 typeArrayHandle depths_array; | |
1316 objArrayHandle synchronizers_array; | |
1317 | |
1318 if (locked_monitors) { | |
1319 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
1320 // where the thread locked it | |
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1321 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
0 | 1322 objArrayHandle mh(THREAD, array); |
1323 monitors_array = mh; | |
1324 | |
1325 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
1326 typeArrayHandle dh(THREAD, tarray); | |
1327 depths_array = dh; | |
1328 | |
1329 int count = 0; | |
1330 int j = 0; | |
1331 for (int depth = 0; depth < num_frames; depth++) { | |
1332 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
1333 int len = frame->num_locked_monitors(); | |
1334 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
1335 for (j = 0; j < len; j++) { | |
1336 oop monitor = locked_monitors->at(j); | |
1337 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
1338 monitors_array->obj_at_put(count, monitor); | |
1339 depths_array->int_at_put(count, depth); | |
1340 count++; | |
1341 } | |
1342 } | |
1343 | |
1344 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
1345 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
1346 oop object = jni_locked_monitors->at(j); | |
1347 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
1348 monitors_array->obj_at_put(count, object); | |
1349 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
1350 depths_array->int_at_put(count, -1); | |
1351 count++; | |
1352 } | |
1353 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
1354 } | |
1355 | |
1356 if (locked_synchronizers) { | |
1357 // Create Object[] filled with locked JSR-166 synchronizers | |
1358 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
1359 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
1360 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
1361 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
1362 | |
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1363 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
0 | 1364 objArrayHandle sh(THREAD, array); |
1365 synchronizers_array = sh; | |
1366 | |
1367 for (int k = 0; k < num_locked_synchronizers; k++) { | |
1368 synchronizers_array->obj_at_put(k, locks->at(k)); | |
1369 } | |
1370 } | |
1371 | |
1372 // Create java.lang.management.ThreadInfo object | |
1373 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
1374 monitors_array, | |
1375 depths_array, | |
1376 synchronizers_array, | |
1377 CHECK_NULL); | |
1378 result_h->obj_at_put(index, info_obj); | |
1379 } | |
1380 | |
1381 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
1382 JVM_END | |
1383 | |
1384 // Returns an array of Class objects. | |
1385 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
1386 ResourceMark rm(THREAD); | |
1387 | |
1388 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
1389 | |
1390 int num_classes = lce.num_loaded_classes(); | |
1142 | 1391 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
0 | 1392 objArrayHandle classes_ah(THREAD, r); |
1393 | |
1394 for (int i = 0; i < num_classes; i++) { | |
1395 KlassHandle kh = lce.get_klass(i); | |
6983 | 1396 oop mirror = kh()->java_mirror(); |
0 | 1397 classes_ah->obj_at_put(i, mirror); |
1398 } | |
1399 | |
1400 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
1401 JVM_END | |
1402 | |
1403 // Reset statistic. Return true if the requested statistic is reset. | |
1404 // Otherwise, return false. | |
1405 // | |
1406 // Input parameters: | |
1407 // obj - specify which instance the statistic associated with to be reset | |
1408 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
1409 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
1410 // type - the type of statistic to be reset | |
1411 // | |
1412 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
1413 ResourceMark rm(THREAD); | |
1414 | |
1415 switch (type) { | |
1416 case JMM_STAT_PEAK_THREAD_COUNT: | |
1417 ThreadService::reset_peak_thread_count(); | |
1418 return true; | |
1419 | |
1420 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
1421 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
1422 jlong tid = obj.j; | |
1423 if (tid < 0) { | |
1424 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
1425 } | |
1426 | |
1427 // Look for the JavaThread of this given tid | |
1428 MutexLockerEx ml(Threads_lock); | |
1429 if (tid == 0) { | |
1430 // reset contention statistics for all threads if tid == 0 | |
1431 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
1432 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1433 ThreadService::reset_contention_count_stat(java_thread); | |
1434 } else { | |
1435 ThreadService::reset_contention_time_stat(java_thread); | |
1436 } | |
1437 } | |
1438 } else { | |
1439 // reset contention statistics for a given thread | |
20393 | 1440 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(tid); |
0 | 1441 if (java_thread == NULL) { |
1442 return false; | |
1443 } | |
1444 | |
1445 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
1446 ThreadService::reset_contention_count_stat(java_thread); | |
1447 } else { | |
1448 ThreadService::reset_contention_time_stat(java_thread); | |
1449 } | |
1450 } | |
1451 return true; | |
1452 break; | |
1453 } | |
1454 case JMM_STAT_PEAK_POOL_USAGE: { | |
1455 jobject o = obj.l; | |
1456 if (o == NULL) { | |
1457 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1458 } | |
1459 | |
1460 oop pool_obj = JNIHandles::resolve(o); | |
1461 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
1462 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
1463 | |
1464 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
1465 if (pool != NULL) { | |
1466 pool->reset_peak_memory_usage(); | |
1467 return true; | |
1468 } | |
1469 break; | |
1470 } | |
1471 case JMM_STAT_GC_STAT: { | |
1472 jobject o = obj.l; | |
1473 if (o == NULL) { | |
1474 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
1475 } | |
1476 | |
1477 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
1478 if (mgr != NULL) { | |
1479 mgr->reset_gc_stat(); | |
1480 return true; | |
1481 } | |
1482 break; | |
1483 } | |
1484 default: | |
1485 assert(0, "Unknown Statistic Type"); | |
1486 } | |
1487 return false; | |
1488 JVM_END | |
1489 | |
1490 // Returns the fast estimate of CPU time consumed by | |
1491 // a given thread (in nanoseconds). | |
1492 // If thread_id == 0, return CPU time for the current thread. | |
1493 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
1494 if (!os::is_thread_cpu_time_supported()) { | |
1495 return -1; | |
1496 } | |
1497 | |
1498 if (thread_id < 0) { | |
1499 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1500 "Invalid thread ID", -1); | |
1501 } | |
1502 | |
1503 JavaThread* java_thread = NULL; | |
1504 if (thread_id == 0) { | |
1505 // current thread | |
1506 return os::current_thread_cpu_time(); | |
1507 } else { | |
1508 MutexLockerEx ml(Threads_lock); | |
20393 | 1509 java_thread = Threads::find_java_thread_from_java_tid(thread_id); |
0 | 1510 if (java_thread != NULL) { |
1511 return os::thread_cpu_time((Thread*) java_thread); | |
1512 } | |
1513 } | |
1514 return -1; | |
1515 JVM_END | |
1516 | |
1517 // Returns a String array of all VM global flag names | |
1518 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
1519 // last flag entry is always NULL, so subtract 1 | |
1520 int nFlags = (int) Flag::numFlags - 1; | |
1521 // allocate a temp array | |
1142 | 1522 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1523 nFlags, CHECK_0); |
1524 objArrayHandle flags_ah(THREAD, r); | |
1525 int num_entries = 0; | |
1526 for (int i = 0; i < nFlags; i++) { | |
1527 Flag* flag = &Flag::flags[i]; | |
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1528 // Exclude notproduct and develop flags in product builds. |
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1529 if (flag->is_constant_in_binary()) { |
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1530 continue; |
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1531 } |
350 | 1532 // Exclude the locked (experimental, diagnostic) flags |
0 | 1533 if (flag->is_unlocked() || flag->is_unlocker()) { |
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1534 Handle s = java_lang_String::create_from_str(flag->_name, CHECK_0); |
0 | 1535 flags_ah->obj_at_put(num_entries, s()); |
1536 num_entries++; | |
1537 } | |
1538 } | |
1539 | |
1540 if (num_entries < nFlags) { | |
1541 // Return array of right length | |
1142 | 1542 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
0 | 1543 for(int i = 0; i < num_entries; i++) { |
1544 res->obj_at_put(i, flags_ah->obj_at(i)); | |
1545 } | |
1546 return (jobjectArray)JNIHandles::make_local(env, res); | |
1547 } | |
1548 | |
1549 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
1550 JVM_END | |
1551 | |
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1552 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
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1553 // can't be determined, true otherwise. If false is returned, then *global |
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1554 // will be incomplete and invalid. |
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1555 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
0 | 1556 Handle flag_name; |
1557 if (name() == NULL) { | |
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1558 flag_name = java_lang_String::create_from_str(flag->_name, CHECK_false); |
0 | 1559 } else { |
1560 flag_name = name; | |
1561 } | |
1562 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
1563 | |
1564 if (flag->is_bool()) { | |
1565 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
1566 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
1567 } else if (flag->is_intx()) { | |
1568 global->value.j = (jlong)flag->get_intx(); | |
1569 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
1570 } else if (flag->is_uintx()) { | |
1571 global->value.j = (jlong)flag->get_uintx(); | |
1572 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
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1573 } else if (flag->is_uint64_t()) { |
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1574 global->value.j = (jlong)flag->get_uint64_t(); |
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1575 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
0 | 1576 } else if (flag->is_ccstr()) { |
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1577 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
0 | 1578 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
1579 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
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1580 } else { |
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1581 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1582 return false; |
0 | 1583 } |
1584 | |
1585 global->writeable = flag->is_writeable(); | |
1586 global->external = flag->is_external(); | |
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1587 switch (flag->get_origin()) { |
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1588 case Flag::DEFAULT: |
0 | 1589 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; |
1590 break; | |
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1591 case Flag::COMMAND_LINE: |
0 | 1592 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; |
1593 break; | |
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1594 case Flag::ENVIRON_VAR: |
0 | 1595 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; |
1596 break; | |
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1597 case Flag::CONFIG_FILE: |
0 | 1598 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; |
1599 break; | |
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1600 case Flag::MANAGEMENT: |
0 | 1601 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; |
1602 break; | |
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1603 case Flag::ERGONOMIC: |
0 | 1604 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; |
1605 break; | |
1606 default: | |
1607 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
1608 } | |
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1609 |
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1610 return true; |
0 | 1611 } |
1612 | |
1613 // Fill globals array of count length with jmmVMGlobal entries | |
1614 // specified by names. If names == NULL, fill globals array | |
1615 // with all Flags. Return value is number of entries | |
1616 // created in globals. | |
1617 // If a Flag with a given name in an array element does not | |
1618 // exist, globals[i].name will be set to NULL. | |
1619 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
1620 jobjectArray names, | |
1621 jmmVMGlobal *globals, | |
1622 jint count)) | |
1623 | |
1624 | |
1625 if (globals == NULL) { | |
1626 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1627 } | |
1628 | |
1629 ResourceMark rm(THREAD); | |
1630 | |
1631 if (names != NULL) { | |
1632 // return the requested globals | |
1633 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1634 objArrayHandle names_ah(THREAD, ta); | |
1635 // Make sure we have a String array | |
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1636 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass(); |
1142 | 1637 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1638 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1639 "Array element type is not String class", 0); | |
1640 } | |
1641 | |
1642 int names_length = names_ah->length(); | |
1643 int num_entries = 0; | |
1644 for (int i = 0; i < names_length && i < count; i++) { | |
1645 oop s = names_ah->obj_at(i); | |
1646 if (s == NULL) { | |
1647 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1648 } | |
1649 | |
1650 Handle sh(THREAD, s); | |
1651 char* str = java_lang_String::as_utf8_string(s); | |
1652 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1653 if (flag != NULL && |
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1654 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
0 | 1655 num_entries++; |
1656 } else { | |
1657 globals[i].name = NULL; | |
1658 } | |
1659 } | |
1660 return num_entries; | |
1661 } else { | |
1662 // return all globals if names == NULL | |
1663 | |
1664 // last flag entry is always NULL, so subtract 1 | |
1665 int nFlags = (int) Flag::numFlags - 1; | |
1666 Handle null_h; | |
1667 int num_entries = 0; | |
1668 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
1669 Flag* flag = &Flag::flags[i]; | |
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1670 // Exclude notproduct and develop flags in product builds. |
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1671 if (flag->is_constant_in_binary()) { |
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1672 continue; |
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1673 } |
350 | 1674 // Exclude the locked (diagnostic, experimental) flags |
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1675 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1676 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
0 | 1677 num_entries++; |
1678 } | |
1679 } | |
1680 return num_entries; | |
1681 } | |
1682 JVM_END | |
1683 | |
1684 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
1685 ResourceMark rm(THREAD); | |
1686 | |
1687 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
1688 if (fn == NULL) { | |
1689 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
1690 "The flag name cannot be null."); | |
1691 } | |
1692 char* name = java_lang_String::as_utf8_string(fn); | |
1693 Flag* flag = Flag::find_flag(name, strlen(name)); | |
1694 if (flag == NULL) { | |
1695 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1696 "Flag does not exist."); | |
1697 } | |
1698 if (!flag->is_writeable()) { | |
1699 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
1700 "This flag is not writeable."); | |
1701 } | |
1702 | |
20248 | 1703 bool succeed = false; |
0 | 1704 if (flag->is_bool()) { |
1705 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
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1706 succeed = CommandLineFlags::boolAtPut(name, &bvalue, Flag::MANAGEMENT); |
0 | 1707 } else if (flag->is_intx()) { |
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1708 intx ivalue = (intx)new_value.j; |
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1709 succeed = CommandLineFlags::intxAtPut(name, &ivalue, Flag::MANAGEMENT); |
0 | 1710 } else if (flag->is_uintx()) { |
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1711 uintx uvalue = (uintx)new_value.j; |
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1712 |
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1713 if (strncmp(name, "MaxHeapFreeRatio", 17) == 0) { |
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1714 FormatBuffer<80> err_msg("%s", ""); |
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1715 if (!Arguments::verify_MaxHeapFreeRatio(err_msg, uvalue)) { |
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1716 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), err_msg.buffer()); |
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1717 } |
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1718 } else if (strncmp(name, "MinHeapFreeRatio", 17) == 0) { |
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1719 FormatBuffer<80> err_msg("%s", ""); |
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1720 if (!Arguments::verify_MinHeapFreeRatio(err_msg, uvalue)) { |
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1721 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), err_msg.buffer()); |
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1722 } |
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1723 } |
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1724 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, Flag::MANAGEMENT); |
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1725 } else if (flag->is_uint64_t()) { |
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1726 uint64_t uvalue = (uint64_t)new_value.j; |
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1727 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, Flag::MANAGEMENT); |
0 | 1728 } else if (flag->is_ccstr()) { |
1729 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
1730 if (str == NULL) { | |
1731 THROW(vmSymbols::java_lang_NullPointerException()); | |
1732 } | |
1733 ccstr svalue = java_lang_String::as_utf8_string(str); | |
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1734 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, Flag::MANAGEMENT); |
20248 | 1735 if (succeed) { |
1736 FREE_C_HEAP_ARRAY(char, svalue, mtInternal); | |
1737 } | |
0 | 1738 } |
1739 assert(succeed, "Setting flag should succeed"); | |
1740 JVM_END | |
1741 | |
1742 class ThreadTimesClosure: public ThreadClosure { | |
1743 private: | |
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1744 objArrayHandle _names_strings; |
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1745 char **_names_chars; |
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1746 typeArrayHandle _times; |
0 | 1747 int _names_len; |
1748 int _times_len; | |
1749 int _count; | |
1750 | |
1751 public: | |
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1752 ThreadTimesClosure(objArrayHandle names, typeArrayHandle times); |
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1753 ~ThreadTimesClosure(); |
0 | 1754 virtual void do_thread(Thread* thread); |
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1755 void do_unlocked(); |
0 | 1756 int count() { return _count; } |
1757 }; | |
1758 | |
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1759 ThreadTimesClosure::ThreadTimesClosure(objArrayHandle names, |
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1760 typeArrayHandle times) { |
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1761 assert(names() != NULL, "names was NULL"); |
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1762 assert(times() != NULL, "times was NULL"); |
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1763 _names_strings = names; |
0 | 1764 _names_len = names->length(); |
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1765 _names_chars = NEW_C_HEAP_ARRAY(char*, _names_len, mtInternal); |
0 | 1766 _times = times; |
1767 _times_len = times->length(); | |
1768 _count = 0; | |
1769 } | |
1770 | |
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1771 // |
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1772 // Called with Threads_lock held |
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1773 // |
0 | 1774 void ThreadTimesClosure::do_thread(Thread* thread) { |
1775 assert(thread != NULL, "thread was NULL"); | |
1776 | |
1777 // exclude externally visible JavaThreads | |
1778 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
1779 return; | |
1780 } | |
1781 | |
1782 if (_count >= _names_len || _count >= _times_len) { | |
1783 // skip if the result array is not big enough | |
1784 return; | |
1785 } | |
1786 | |
1787 EXCEPTION_MARK; | |
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1788 ResourceMark rm(THREAD); // thread->name() uses ResourceArea |
0 | 1789 |
1790 assert(thread->name() != NULL, "All threads should have a name"); | |
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1791 _names_chars[_count] = strdup(thread->name()); |
0 | 1792 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? |
1793 os::thread_cpu_time(thread) : -1); | |
1794 _count++; | |
1795 } | |
1796 | |
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1797 // Called without Threads_lock, we can allocate String objects. |
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1798 void ThreadTimesClosure::do_unlocked() { |
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1799 |
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1800 EXCEPTION_MARK; |
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1801 for (int i = 0; i < _count; i++) { |
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1802 Handle s = java_lang_String::create_from_str(_names_chars[i], CHECK); |
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1803 _names_strings->obj_at_put(i, s()); |
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1804 } |
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1805 } |
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1806 |
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1807 ThreadTimesClosure::~ThreadTimesClosure() { |
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1808 for (int i = 0; i < _count; i++) { |
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1809 free(_names_chars[i]); |
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1810 } |
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1811 FREE_C_HEAP_ARRAY(char *, _names_chars, mtInternal); |
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1812 } |
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1813 |
0 | 1814 // Fills names with VM internal thread names and times with the corresponding |
1815 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
1816 // If the element type of names is not String, an IllegalArgumentException is | |
1817 // thrown. | |
1818 // If an array is not large enough to hold all the entries, only the entries | |
1819 // that fit will be returned. Return value is the number of VM internal | |
1820 // threads entries. | |
1821 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
1822 jobjectArray names, | |
1823 jlongArray times)) | |
1824 if (names == NULL || times == NULL) { | |
1825 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1826 } | |
1827 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
1828 objArrayHandle names_ah(THREAD, na); | |
1829 | |
1830 // Make sure we have a String array | |
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1831 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass(); |
1142 | 1832 if (element_klass != SystemDictionary::String_klass()) { |
0 | 1833 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
1834 "Array element type is not String class", 0); | |
1835 } | |
1836 | |
1837 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
1838 typeArrayHandle times_ah(THREAD, ta); | |
1839 | |
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1840 ThreadTimesClosure ttc(names_ah, times_ah); |
0 | 1841 { |
1842 MutexLockerEx ml(Threads_lock); | |
1843 Threads::threads_do(&ttc); | |
1844 } | |
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1845 ttc.do_unlocked(); |
0 | 1846 return ttc.count(); |
1847 JVM_END | |
1848 | |
1849 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
1850 ResourceMark rm(THREAD); | |
1851 | |
1852 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
1853 VMThread::execute(&op); | |
1854 | |
1855 DeadlockCycle* deadlocks = op.result(); | |
1856 if (deadlocks == NULL) { | |
1857 // no deadlock found and return | |
1858 return Handle(); | |
1859 } | |
1860 | |
1861 int num_threads = 0; | |
1862 DeadlockCycle* cycle; | |
1863 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1864 num_threads += cycle->num_threads(); | |
1865 } | |
1866 | |
1142 | 1867 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
0 | 1868 objArrayHandle threads_ah(THREAD, r); |
1869 | |
1870 int index = 0; | |
1871 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
1872 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
1873 int len = deadlock_threads->length(); | |
1874 for (int i = 0; i < len; i++) { | |
1875 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
1876 index++; | |
1877 } | |
1878 } | |
1879 return threads_ah; | |
1880 } | |
1881 | |
1882 // Finds cycles of threads that are deadlocked involved in object monitors | |
1883 // and JSR-166 synchronizers. | |
1884 // Returns an array of Thread objects which are in deadlock, if any. | |
1885 // Otherwise, returns NULL. | |
1886 // | |
1887 // Input parameter: | |
1888 // object_monitors_only - if true, only check object monitors | |
1889 // | |
1890 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
1891 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
1892 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1893 JVM_END | |
1894 | |
1895 // Finds cycles of threads that are deadlocked on monitor locks | |
1896 // Returns an array of Thread objects which are in deadlock, if any. | |
1897 // Otherwise, returns NULL. | |
1898 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
1899 Handle result = find_deadlocks(true, CHECK_0); | |
1900 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1901 JVM_END | |
1902 | |
1903 // Gets the information about GC extension attributes including | |
1904 // the name of the attribute, its type, and a short description. | |
1905 // | |
1906 // Input parameters: | |
1907 // mgr - GC memory manager | |
1908 // info - caller allocated array of jmmExtAttributeInfo | |
1909 // count - number of elements of the info array | |
1910 // | |
1911 // Returns the number of GC extension attributes filled in the info array; or | |
1912 // -1 if info is not big enough | |
1913 // | |
1914 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
1915 // All GC memory managers have 1 attribute (number of GC threads) | |
1916 if (count == 0) { | |
1917 return 0; | |
1918 } | |
1919 | |
1920 if (info == NULL) { | |
1921 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1922 } | |
1923 | |
1924 info[0].name = "GcThreadCount"; | |
1925 info[0].type = 'I'; | |
1926 info[0].description = "Number of GC threads"; | |
1927 return 1; | |
1928 JVM_END | |
1929 | |
1930 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
1931 // of a given length and return the objArrayOop | |
1932 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
1933 if (array == NULL) { | |
1934 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
1935 } | |
1936 | |
1937 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
1938 objArrayHandle array_h(THREAD, oa); | |
1939 | |
1940 // array must be of the given length | |
1941 if (length != array_h->length()) { | |
1942 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1943 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
1944 } | |
1945 | |
1946 // check if the element of array is of type MemoryUsage class | |
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1947 Klass* usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); |
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1948 Klass* element_klass = ObjArrayKlass::cast(array_h->klass())->element_klass(); |
0 | 1949 if (element_klass != usage_klass) { |
1950 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
1951 "The element type is not MemoryUsage class", 0); | |
1952 } | |
1953 | |
1954 return array_h(); | |
1955 } | |
1956 | |
1957 // Gets the statistics of the last GC of a given GC memory manager. | |
1958 // Input parameters: | |
1959 // obj - GarbageCollectorMXBean object | |
1960 // gc_stat - caller allocated jmmGCStat where: | |
1961 // a. before_gc_usage - array of MemoryUsage objects | |
1962 // b. after_gc_usage - array of MemoryUsage objects | |
1963 // c. gc_ext_attributes_values_size is set to the | |
1964 // gc_ext_attribute_values array allocated | |
1965 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
1966 // | |
1967 // On return, | |
1968 // gc_index == 0 indicates no GC statistics available | |
1969 // | |
1970 // before_gc_usage and after_gc_usage - filled with per memory pool | |
1971 // before and after GC usage in the same order as the memory pools | |
1972 // returned by GetMemoryPools for a given GC memory manager. | |
1973 // num_gc_ext_attributes indicates the number of elements in | |
1974 // the gc_ext_attribute_values array is filled; or | |
1975 // -1 if the gc_ext_attributes_values array is not big enough | |
1976 // | |
1977 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
1978 ResourceMark rm(THREAD); | |
1979 | |
1980 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
1981 THROW(vmSymbols::java_lang_NullPointerException()); | |
1982 } | |
1983 | |
1984 // Get the GCMemoryManager | |
1985 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
1986 | |
1987 // Make a copy of the last GC statistics | |
1988 // GC may occur while constructing the last GC information | |
1989 int num_pools = MemoryService::num_memory_pools(); | |
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1990 GCStatInfo stat(num_pools); |
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1991 if (mgr->get_last_gc_stat(&stat) == 0) { |
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1992 gc_stat->gc_index = 0; |
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1993 return; |
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1994 } |
0 | 1995 |
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1996 gc_stat->gc_index = stat.gc_index(); |
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1997 gc_stat->start_time = Management::ticks_to_ms(stat.start_time()); |
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1998 gc_stat->end_time = Management::ticks_to_ms(stat.end_time()); |
0 | 1999 |
2000 // Current implementation does not have GC extension attributes | |
2001 gc_stat->num_gc_ext_attributes = 0; | |
2002 | |
2003 // Fill the arrays of MemoryUsage objects with before and after GC | |
2004 // per pool memory usage | |
2005 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
2006 num_pools, | |
2007 CHECK); | |
2008 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
2009 | |
2010 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
2011 num_pools, | |
2012 CHECK); | |
2013 objArrayHandle usage_after_gc_ah(THREAD, au); | |
2014 | |
2015 for (int i = 0; i < num_pools; i++) { | |
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2016 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK); |
0 | 2017 Handle after_usage; |
2018 | |
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2019 MemoryUsage u = stat.after_gc_usage_for_pool(i); |
0 | 2020 if (u.max_size() == 0 && u.used() > 0) { |
2021 // If max size == 0, this pool is a survivor space. | |
2022 // Set max size = -1 since the pools will be swapped after GC. | |
2023 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
2024 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
2025 } else { | |
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2026 after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK); |
0 | 2027 } |
2028 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
2029 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
2030 } | |
2031 | |
2032 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
2033 // Current implementation only has 1 attribute (number of GC threads) | |
2034 // The type is 'I' | |
2035 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
2036 } | |
2037 JVM_END | |
2038 | |
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2039 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) |
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2040 ResourceMark rm(THREAD); |
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2041 // Get the GCMemoryManager |
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2042 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
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2043 mgr->set_notification_enabled(enabled?true:false); |
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2044 JVM_END |
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2045 |
0 | 2046 // Dump heap - Returns 0 if succeeds. |
2047 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
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2048 #if INCLUDE_SERVICES |
0 | 2049 ResourceMark rm(THREAD); |
2050 oop on = JNIHandles::resolve_external_guard(outputfile); | |
2051 if (on == NULL) { | |
2052 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2053 "Output file name cannot be null.", -1); | |
2054 } | |
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2055 char* name = java_lang_String::as_platform_dependent_str(on, CHECK_(-1)); |
0 | 2056 if (name == NULL) { |
2057 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
2058 "Output file name cannot be null.", -1); | |
2059 } | |
2060 HeapDumper dumper(live ? true : false); | |
2061 if (dumper.dump(name) != 0) { | |
2062 const char* errmsg = dumper.error_as_C_string(); | |
2063 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
2064 } | |
2065 return 0; | |
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2066 #else // INCLUDE_SERVICES |
0 | 2067 return -1; |
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2068 #endif // INCLUDE_SERVICES |
0 | 2069 JVM_END |
2070 | |
4133 | 2071 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env)) |
2072 ResourceMark rm(THREAD); | |
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2073 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(DCmd_Source_MBean); |
4133 | 2074 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(), |
2075 dcmd_list->length(), CHECK_NULL); | |
2076 objArrayHandle cmd_array(THREAD, cmd_array_oop); | |
2077 for (int i = 0; i < dcmd_list->length(); i++) { | |
2078 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL); | |
2079 cmd_array->obj_at_put(i, cmd_name); | |
2080 } | |
2081 return (jobjectArray) JNIHandles::make_local(env, cmd_array()); | |
2082 JVM_END | |
2083 | |
2084 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds, | |
2085 dcmdInfo* infoArray)) | |
2086 if (cmds == NULL || infoArray == NULL) { | |
2087 THROW(vmSymbols::java_lang_NullPointerException()); | |
2088 } | |
2089 | |
2090 ResourceMark rm(THREAD); | |
2091 | |
2092 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds)); | |
2093 objArrayHandle cmds_ah(THREAD, ca); | |
2094 | |
2095 // Make sure we have a String array | |
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2096 Klass* element_klass = ObjArrayKlass::cast(cmds_ah->klass())->element_klass(); |
4133 | 2097 if (element_klass != SystemDictionary::String_klass()) { |
2098 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2099 "Array element type is not String class"); | |
2100 } | |
2101 | |
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2102 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(DCmd_Source_MBean); |
4133 | 2103 |
2104 int num_cmds = cmds_ah->length(); | |
2105 for (int i = 0; i < num_cmds; i++) { | |
2106 oop cmd = cmds_ah->obj_at(i); | |
2107 if (cmd == NULL) { | |
2108 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2109 "Command name cannot be null."); | |
2110 } | |
2111 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2112 if (cmd_name == NULL) { | |
2113 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2114 "Command name cannot be null."); | |
2115 } | |
2116 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name); | |
2117 if (pos == -1) { | |
2118 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2119 "Unknown diagnostic command"); | |
2120 } | |
2121 DCmdInfo* info = info_list->at(pos); | |
2122 infoArray[i].name = info->name(); | |
2123 infoArray[i].description = info->description(); | |
2124 infoArray[i].impact = info->impact(); | |
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2125 JavaPermission p = info->permission(); |
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2126 infoArray[i].permission_class = p._class; |
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2127 infoArray[i].permission_name = p._name; |
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2128 infoArray[i].permission_action = p._action; |
4133 | 2129 infoArray[i].num_arguments = info->num_arguments(); |
2130 infoArray[i].enabled = info->is_enabled(); | |
2131 } | |
2132 JVM_END | |
2133 | |
2134 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env, | |
2135 jstring command, dcmdArgInfo* infoArray)) | |
2136 ResourceMark rm(THREAD); | |
2137 oop cmd = JNIHandles::resolve_external_guard(command); | |
2138 if (cmd == NULL) { | |
2139 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2140 "Command line cannot be null."); | |
2141 } | |
2142 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
2143 if (cmd_name == NULL) { | |
2144 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
2145 "Command line content cannot be null."); | |
2146 } | |
2147 DCmd* dcmd = NULL; | |
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2148 DCmdFactory*factory = DCmdFactory::factory(DCmd_Source_MBean, cmd_name, |
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2149 strlen(cmd_name)); |
4133 | 2150 if (factory != NULL) { |
2151 dcmd = factory->create_resource_instance(NULL); | |
2152 } | |
2153 if (dcmd == NULL) { | |
2154 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2155 "Unknown diagnostic command"); | |
2156 } | |
2157 DCmdMark mark(dcmd); | |
2158 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array(); | |
2159 if (array->length() == 0) { | |
2160 return; | |
2161 } | |
2162 for (int i = 0; i < array->length(); i++) { | |
2163 infoArray[i].name = array->at(i)->name(); | |
2164 infoArray[i].description = array->at(i)->description(); | |
2165 infoArray[i].type = array->at(i)->type(); | |
2166 infoArray[i].default_string = array->at(i)->default_string(); | |
2167 infoArray[i].mandatory = array->at(i)->is_mandatory(); | |
2168 infoArray[i].option = array->at(i)->is_option(); | |
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2169 infoArray[i].multiple = array->at(i)->is_multiple(); |
4133 | 2170 infoArray[i].position = array->at(i)->position(); |
2171 } | |
2172 return; | |
2173 JVM_END | |
2174 | |
2175 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline)) | |
2176 ResourceMark rm(THREAD); | |
2177 oop cmd = JNIHandles::resolve_external_guard(commandline); | |
2178 if (cmd == NULL) { | |
2179 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2180 "Command line cannot be null."); | |
2181 } | |
2182 char* cmdline = java_lang_String::as_utf8_string(cmd); | |
2183 if (cmdline == NULL) { | |
2184 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
2185 "Command line content cannot be null."); | |
2186 } | |
2187 bufferedStream output; | |
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2188 DCmd::parse_and_execute(DCmd_Source_MBean, &output, cmdline, ' ', CHECK_NULL); |
4133 | 2189 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL); |
2190 return (jstring) JNIHandles::make_local(env, result); | |
2191 JVM_END | |
2192 | |
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2193 JVM_ENTRY(void, jmm_SetDiagnosticFrameworkNotificationEnabled(JNIEnv *env, jboolean enabled)) |
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2194 DCmdFactory::set_jmx_notification_enabled(enabled?true:false); |
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2195 JVM_END |
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2196 |
0 | 2197 jlong Management::ticks_to_ms(jlong ticks) { |
2198 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
2199 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
2200 * (double)1000.0); | |
2201 } | |
20393 | 2202 #endif // INCLUDE_MANAGEMENT |
0 | 2203 |
20393 | 2204 // Gets an array containing the amount of memory allocated on the Java |
2205 // heap for a set of threads (in bytes). Each element of the array is | |
2206 // the amount of memory allocated for the thread ID specified in the | |
2207 // corresponding entry in the given array of thread IDs; or -1 if the | |
2208 // thread does not exist or has terminated. | |
2209 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, | |
2210 jlongArray sizeArray)) | |
2211 // Check if threads is null | |
2212 if (ids == NULL || sizeArray == NULL) { | |
2213 THROW(vmSymbols::java_lang_NullPointerException()); | |
2214 } | |
2215 | |
2216 ResourceMark rm(THREAD); | |
2217 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
2218 typeArrayHandle ids_ah(THREAD, ta); | |
2219 | |
2220 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); | |
2221 typeArrayHandle sizeArray_h(THREAD, sa); | |
2222 | |
2223 // validate the thread id array | |
2224 validate_thread_id_array(ids_ah, CHECK); | |
2225 | |
2226 // sizeArray must be of the same length as the given array of thread IDs | |
2227 int num_threads = ids_ah->length(); | |
2228 if (num_threads != sizeArray_h->length()) { | |
2229 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2230 "The length of the given long array does not match the length of " | |
2231 "the given array of thread IDs"); | |
2232 } | |
2233 | |
2234 MutexLockerEx ml(Threads_lock); | |
2235 for (int i = 0; i < num_threads; i++) { | |
2236 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(ids_ah->long_at(i)); | |
2237 if (java_thread != NULL) { | |
2238 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); | |
2239 } | |
2240 } | |
2241 JVM_END | |
2242 | |
2243 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
2244 // If thread_id == 0, CPU time for the current thread is returned. | |
2245 // If user_sys_cpu_time = true, user level and system CPU time of | |
2246 // a given thread is returned; otherwise, only user level CPU time | |
2247 // is returned. | |
2248 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
2249 if (!os::is_thread_cpu_time_supported()) { | |
2250 return -1; | |
2251 } | |
2252 | |
2253 if (thread_id < 0) { | |
2254 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
2255 "Invalid thread ID", -1); | |
2256 } | |
2257 | |
2258 JavaThread* java_thread = NULL; | |
2259 if (thread_id == 0) { | |
2260 // current thread | |
2261 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
2262 } else { | |
2263 MutexLockerEx ml(Threads_lock); | |
2264 java_thread = Threads::find_java_thread_from_java_tid(thread_id); | |
2265 if (java_thread != NULL) { | |
2266 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
2267 } | |
2268 } | |
2269 return -1; | |
2270 JVM_END | |
2271 | |
2272 // Gets an array containing the CPU times consumed by a set of threads | |
2273 // (in nanoseconds). Each element of the array is the CPU time for the | |
2274 // thread ID specified in the corresponding entry in the given array | |
2275 // of thread IDs; or -1 if the thread does not exist or has terminated. | |
2276 // If user_sys_cpu_time = true, the sum of user level and system CPU time | |
2277 // for the given thread is returned; otherwise, only user level CPU time | |
2278 // is returned. | |
2279 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, | |
2280 jlongArray timeArray, | |
2281 jboolean user_sys_cpu_time)) | |
2282 // Check if threads is null | |
2283 if (ids == NULL || timeArray == NULL) { | |
2284 THROW(vmSymbols::java_lang_NullPointerException()); | |
2285 } | |
2286 | |
2287 ResourceMark rm(THREAD); | |
2288 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
2289 typeArrayHandle ids_ah(THREAD, ta); | |
2290 | |
2291 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); | |
2292 typeArrayHandle timeArray_h(THREAD, tia); | |
2293 | |
2294 // validate the thread id array | |
2295 validate_thread_id_array(ids_ah, CHECK); | |
2296 | |
2297 // timeArray must be of the same length as the given array of thread IDs | |
2298 int num_threads = ids_ah->length(); | |
2299 if (num_threads != timeArray_h->length()) { | |
2300 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
2301 "The length of the given long array does not match the length of " | |
2302 "the given array of thread IDs"); | |
2303 } | |
2304 | |
2305 MutexLockerEx ml(Threads_lock); | |
2306 for (int i = 0; i < num_threads; i++) { | |
2307 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(ids_ah->long_at(i)); | |
2308 if (java_thread != NULL) { | |
2309 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, | |
2310 user_sys_cpu_time != 0)); | |
2311 } | |
2312 } | |
2313 JVM_END | |
2314 | |
2315 | |
2316 | |
2317 #if INCLUDE_MANAGEMENT | |
0 | 2318 const struct jmmInterface_1_ jmm_interface = { |
2319 NULL, | |
2320 NULL, | |
2321 jmm_GetVersion, | |
2322 jmm_GetOptionalSupport, | |
2323 jmm_GetInputArguments, | |
2324 jmm_GetThreadInfo, | |
2325 jmm_GetInputArgumentArray, | |
2326 jmm_GetMemoryPools, | |
2327 jmm_GetMemoryManagers, | |
2328 jmm_GetMemoryPoolUsage, | |
2329 jmm_GetPeakMemoryPoolUsage, | |
2100
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2330 jmm_GetThreadAllocatedMemory, |
0 | 2331 jmm_GetMemoryUsage, |
2332 jmm_GetLongAttribute, | |
2333 jmm_GetBoolAttribute, | |
2334 jmm_SetBoolAttribute, | |
2335 jmm_GetLongAttributes, | |
2336 jmm_FindMonitorDeadlockedThreads, | |
2337 jmm_GetThreadCpuTime, | |
2338 jmm_GetVMGlobalNames, | |
2339 jmm_GetVMGlobals, | |
2340 jmm_GetInternalThreadTimes, | |
2341 jmm_ResetStatistic, | |
2342 jmm_SetPoolSensor, | |
2343 jmm_SetPoolThreshold, | |
2344 jmm_GetPoolCollectionUsage, | |
2345 jmm_GetGCExtAttributeInfo, | |
2346 jmm_GetLastGCStat, | |
2347 jmm_GetThreadCpuTimeWithKind, | |
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2348 jmm_GetThreadCpuTimesWithKind, |
0 | 2349 jmm_DumpHeap0, |
2350 jmm_FindDeadlockedThreads, | |
2351 jmm_SetVMGlobal, | |
2352 NULL, | |
3356
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|
2353 jmm_DumpThreads, |
4133 | 2354 jmm_SetGCNotificationEnabled, |
2355 jmm_GetDiagnosticCommands, | |
2356 jmm_GetDiagnosticCommandInfo, | |
2357 jmm_GetDiagnosticCommandArgumentsInfo, | |
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|
2358 jmm_ExecuteDiagnosticCommand, |
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2359 jmm_SetDiagnosticFrameworkNotificationEnabled |
0 | 2360 }; |
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|
2361 #endif // INCLUDE_MANAGEMENT |
0 | 2362 |
2363 void* Management::get_jmm_interface(int version) { | |
6854
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2364 #if INCLUDE_MANAGEMENT |
0 | 2365 if (version == JMM_VERSION_1_0) { |
2366 return (void*) &jmm_interface; | |
2367 } | |
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2368 #endif // INCLUDE_MANAGEMENT |
0 | 2369 return NULL; |
2370 } |