1 /*
2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc_implementation/shared/vmGCOperations.hpp"
27 #include "runtime/javaCalls.hpp"
28 #include "services/diagnosticArgument.hpp"
29 #include "services/diagnosticCommand.hpp"
30 #include "services/diagnosticFramework.hpp"
31 #include "services/heapDumper.hpp"
32 #include "services/management.hpp"
33
34 void DCmdRegistrant::register_dcmds(){
35 // Registration of the diagnostic commands
36 // First boolean argument specifies if the command is enabled
37 // Second boolean argument specifies if the command is hidden
38 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
39 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
40 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
41 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
42 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
43 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
44 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
45 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
46 #if INCLUDE_SERVICES // Heap dumping/inspection supported
47 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
48 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
49 if (UnlockDiagnosticVMOptions) {
50 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(true, false));
51 }
52 #endif // INCLUDE_SERVICES
53 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
54 //Enhanced JMX Agent Support
55 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(true,false));
56 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(true,false));
57 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(true,false));
58
59 }
60
61 #ifndef HAVE_EXTRA_DCMD
62 void DCmdRegistrant::register_dcmds_ext(){
63 // Do nothing here
64 }
65 #endif
66
67
68 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
69 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
70 _cmd("command name", "The name of the command for which we want help",
71 "STRING", false) {
72 _dcmdparser.add_dcmd_option(&_all);
73 _dcmdparser.add_dcmd_argument(&_cmd);
74 };
75
76 void HelpDCmd::execute(TRAPS) {
77 if (_all.value()) {
78 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list();
79 for (int i = 0; i < cmd_list->length(); i++) {
80 DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i),
81 strlen(cmd_list->at(i)));
82 if (!factory->is_hidden()) {
83 output()->print_cr("%s%s", factory->name(),
84 factory->is_enabled() ? "" : " [disabled]");
85 output()->print_cr("\t%s", factory->description());
86 output()->cr();
87 }
88 factory = factory->next();
89 }
90 } else if (_cmd.has_value()) {
91 DCmd* cmd = NULL;
92 DCmdFactory* factory = DCmdFactory::factory(_cmd.value(),
93 strlen(_cmd.value()));
94 if (factory != NULL) {
95 output()->print_cr("%s%s", factory->name(),
96 factory->is_enabled() ? "" : " [disabled]");
97 output()->print_cr(factory->description());
98 output()->print_cr("\nImpact: %s", factory->impact());
99 output()->cr();
100 cmd = factory->create_resource_instance(output());
101 if (cmd != NULL) {
102 DCmdMark mark(cmd);
103 cmd->print_help(factory->name());
104 }
105 } else {
106 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
107 }
108 } else {
109 output()->print_cr("The following commands are available:");
110 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list();
111 for (int i = 0; i < cmd_list->length(); i++) {
112 DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i),
113 strlen(cmd_list->at(i)));
114 if (!factory->is_hidden()) {
115 output()->print_cr("%s%s", factory->name(),
116 factory->is_enabled() ? "" : " [disabled]");
117 }
118 factory = factory->_next;
119 }
120 output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
121 }
122 }
123
124 int HelpDCmd::num_arguments() {
125 ResourceMark rm;
126 HelpDCmd* dcmd = new HelpDCmd(NULL, false);
127 if (dcmd != NULL) {
128 DCmdMark mark(dcmd);
129 return dcmd->_dcmdparser.num_arguments();
130 } else {
131 return 0;
132 }
133 }
134
135 void VersionDCmd::execute(TRAPS) {
136 output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
137 Abstract_VM_Version::vm_release());
138 JDK_Version jdk_version = JDK_Version::current();
139 if (jdk_version.update_version() > 0) {
140 output()->print_cr("JDK %d.%d_%02d", jdk_version.major_version(),
141 jdk_version.minor_version(), jdk_version.update_version());
142 } else {
143 output()->print_cr("JDK %d.%d", jdk_version.major_version(),
144 jdk_version.minor_version());
145 }
146 }
147
148 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
149 DCmdWithParser(output, heap),
150 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
151 _dcmdparser.add_dcmd_option(&_all);
152 }
153
154 void PrintVMFlagsDCmd::execute(TRAPS) {
155 if (_all.value()) {
156 CommandLineFlags::printFlags(output(), true);
157 } else {
158 CommandLineFlags::printSetFlags(output());
159 }
160 }
161
162 int PrintVMFlagsDCmd::num_arguments() {
163 ResourceMark rm;
164 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
165 if (dcmd != NULL) {
166 DCmdMark mark(dcmd);
167 return dcmd->_dcmdparser.num_arguments();
168 } else {
169 return 0;
170 }
171 }
172
173 void PrintSystemPropertiesDCmd::execute(TRAPS) {
174 // load sun.misc.VMSupport
175 Symbol* klass = vmSymbols::sun_misc_VMSupport();
176 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
177 instanceKlassHandle ik (THREAD, k);
178 if (ik->should_be_initialized()) {
179 ik->initialize(THREAD);
180 }
181 if (HAS_PENDING_EXCEPTION) {
182 java_lang_Throwable::print(PENDING_EXCEPTION, output());
183 output()->cr();
184 CLEAR_PENDING_EXCEPTION;
185 return;
186 }
187
188 // invoke the serializePropertiesToByteArray method
189 JavaValue result(T_OBJECT);
190 JavaCallArguments args;
191
192 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
193 JavaCalls::call_static(&result,
194 ik,
195 vmSymbols::serializePropertiesToByteArray_name(),
196 signature,
197 &args,
198 THREAD);
199 if (HAS_PENDING_EXCEPTION) {
200 java_lang_Throwable::print(PENDING_EXCEPTION, output());
201 output()->cr();
202 CLEAR_PENDING_EXCEPTION;
203 return;
204 }
205
206 // The result should be a [B
207 oop res = (oop)result.get_jobject();
208 assert(res->is_typeArray(), "just checking");
209 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
210
211 // copy the bytes to the output stream
212 typeArrayOop ba = typeArrayOop(res);
213 jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
214 output()->print_raw((const char*)addr, ba->length());
215 }
216
217 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
218 DCmdWithParser(output, heap),
219 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
220 _dcmdparser.add_dcmd_option(&_date);
221 }
222
223 void VMUptimeDCmd::execute(TRAPS) {
224 if (_date.value()) {
225 output()->date_stamp(true, "", ": ");
226 }
227 output()->time_stamp().update_to(tty->time_stamp().ticks());
228 output()->stamp();
229 output()->print_cr(" s");
230 }
231
232 int VMUptimeDCmd::num_arguments() {
233 ResourceMark rm;
234 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
235 if (dcmd != NULL) {
236 DCmdMark mark(dcmd);
237 return dcmd->_dcmdparser.num_arguments();
238 } else {
239 return 0;
240 }
241 }
242
243 void SystemGCDCmd::execute(TRAPS) {
244 Universe::heap()->collect(GCCause::_java_lang_system_gc);
245 }
246
247 void RunFinalizationDCmd::execute(TRAPS) {
248 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
249 true, CHECK);
250 instanceKlassHandle klass(THREAD, k);
251 JavaValue result(T_VOID);
252 JavaCalls::call_static(&result, klass,
253 vmSymbols::run_finalization_name(),
254 vmSymbols::void_method_signature(), CHECK);
255 }
256
257 #if INCLUDE_SERVICES // Heap dumping/inspection supported
258 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
259 DCmdWithParser(output, heap),
260 _filename("filename","Name of the dump file", "STRING",true),
261 _all("-all", "Dump all objects, including unreachable objects",
262 "BOOLEAN", false, "false") {
263 _dcmdparser.add_dcmd_option(&_all);
264 _dcmdparser.add_dcmd_argument(&_filename);
265 }
266
267 void HeapDumpDCmd::execute(TRAPS) {
268 // Request a full GC before heap dump if _all is false
269 // This helps reduces the amount of unreachable objects in the dump
270 // and makes it easier to browse.
271 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
272 int res = dumper.dump(_filename.value());
273 if (res == 0) {
274 output()->print_cr("Heap dump file created");
275 } else {
276 // heap dump failed
277 ResourceMark rm;
278 char* error = dumper.error_as_C_string();
279 if (error == NULL) {
280 output()->print_cr("Dump failed - reason unknown");
281 } else {
282 output()->print_cr("%s", error);
283 }
284 }
285 }
286
287 int HeapDumpDCmd::num_arguments() {
288 ResourceMark rm;
289 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
290 if (dcmd != NULL) {
291 DCmdMark mark(dcmd);
292 return dcmd->_dcmdparser.num_arguments();
293 } else {
294 return 0;
295 }
296 }
297
298 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
299 DCmdWithParser(output, heap),
300 _all("-all", "Inspect all objects, including unreachable objects",
301 "BOOLEAN", false, "false") {
302 _dcmdparser.add_dcmd_option(&_all);
303 }
304
305 void ClassHistogramDCmd::execute(TRAPS) {
306 VM_GC_HeapInspection heapop(output(),
307 !_all.value() /* request full gc if false */,
308 true /* need_prologue */);
309 VMThread::execute(&heapop);
310 }
311
312 int ClassHistogramDCmd::num_arguments() {
313 ResourceMark rm;
314 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
315 if (dcmd != NULL) {
316 DCmdMark mark(dcmd);
317 return dcmd->_dcmdparser.num_arguments();
318 } else {
319 return 0;
320 }
321 }
322
323 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
324 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
325 DCmdWithParser(output, heap),
326 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
327 "BOOLEAN", false, "false"),
328 _all("-all", "Show all columns",
329 "BOOLEAN", false, "false"),
330 _help("-help", "Show meaning of all the columns",
331 "BOOLEAN", false, "false"),
332 _columns("columns", "Comma-separated list of all the columns to show. "
333 "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
334 "STRING", false) {
335 _dcmdparser.add_dcmd_option(&_all);
336 _dcmdparser.add_dcmd_option(&_csv);
337 _dcmdparser.add_dcmd_option(&_help);
338 _dcmdparser.add_dcmd_argument(&_columns);
339 }
340
341 void ClassStatsDCmd::execute(TRAPS) {
342 VM_GC_HeapInspection heapop(output(),
343 true, /* request_full_gc */
344 true /* need_prologue */);
345 heapop.set_csv_format(_csv.value());
346 heapop.set_print_help(_help.value());
347 heapop.set_print_class_stats(true);
348 if (_all.value()) {
349 if (_columns.has_value()) {
350 output()->print_cr("Cannot specify -all and individual columns at the same time");
351 return;
352 } else {
353 heapop.set_columns(NULL);
354 }
355 } else {
356 if (_columns.has_value()) {
357 heapop.set_columns(_columns.value());
358 } else {
359 heapop.set_columns(DEFAULT_COLUMNS);
360 }
361 }
362 VMThread::execute(&heapop);
363 }
364
365 int ClassStatsDCmd::num_arguments() {
366 ResourceMark rm;
367 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
368 if (dcmd != NULL) {
369 DCmdMark mark(dcmd);
370 return dcmd->_dcmdparser.num_arguments();
371 } else {
372 return 0;
373 }
374 }
375 #endif // INCLUDE_SERVICES
376
377 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
378 DCmdWithParser(output, heap),
379 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") {
380 _dcmdparser.add_dcmd_option(&_locks);
381 }
382
383 void ThreadDumpDCmd::execute(TRAPS) {
384 // thread stacks
385 VM_PrintThreads op1(output(), _locks.value());
386 VMThread::execute(&op1);
387
388 // JNI global handles
389 VM_PrintJNI op2(output());
390 VMThread::execute(&op2);
391
392 // Deadlock detection
393 VM_FindDeadlocks op3(output());
394 VMThread::execute(&op3);
395 }
396
397 int ThreadDumpDCmd::num_arguments() {
398 ResourceMark rm;
399 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
400 if (dcmd != NULL) {
401 DCmdMark mark(dcmd);
402 return dcmd->_dcmdparser.num_arguments();
403 } else {
404 return 0;
405 }
406 }
407
408 // Enhanced JMX Agent support
409
410 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
411
412 DCmdWithParser(output, heap_allocated),
413
414 _config_file
415 ("config.file",
416 "set com.sun.management.config.file", "STRING", false),
417
418 _jmxremote_port
419 ("jmxremote.port",
420 "set com.sun.management.jmxremote.port", "STRING", false),
421
422 _jmxremote_rmi_port
423 ("jmxremote.rmi.port",
424 "set com.sun.management.jmxremote.rmi.port", "STRING", false),
425
426 _jmxremote_ssl
427 ("jmxremote.ssl",
428 "set com.sun.management.jmxremote.ssl", "STRING", false),
429
430 _jmxremote_registry_ssl
431 ("jmxremote.registry.ssl",
432 "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
433
434 _jmxremote_authenticate
435 ("jmxremote.authenticate",
436 "set com.sun.management.jmxremote.authenticate", "STRING", false),
437
438 _jmxremote_password_file
439 ("jmxremote.password.file",
440 "set com.sun.management.jmxremote.password.file", "STRING", false),
441
442 _jmxremote_access_file
443 ("jmxremote.access.file",
444 "set com.sun.management.jmxremote.access.file", "STRING", false),
445
446 _jmxremote_login_config
447 ("jmxremote.login.config",
448 "set com.sun.management.jmxremote.login.config", "STRING", false),
449
450 _jmxremote_ssl_enabled_cipher_suites
451 ("jmxremote.ssl.enabled.cipher.suites",
452 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
453
454 _jmxremote_ssl_enabled_protocols
455 ("jmxremote.ssl.enabled.protocols",
456 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
457
458 _jmxremote_ssl_need_client_auth
459 ("jmxremote.ssl.need.client.auth",
460 "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
461
462 _jmxremote_ssl_config_file
463 ("jmxremote.ssl.config.file",
464 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false)
465
466 {
467 _dcmdparser.add_dcmd_option(&_config_file);
468 _dcmdparser.add_dcmd_option(&_jmxremote_port);
469 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
470 _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
471 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
472 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
473 _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
474 _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
475 _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
476 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
477 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
478 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
479 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
480 }
481
482
483 int JMXStartRemoteDCmd::num_arguments() {
484 ResourceMark rm;
485 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
486 if (dcmd != NULL) {
487 DCmdMark mark(dcmd);
488 return dcmd->_dcmdparser.num_arguments();
489 } else {
490 return 0;
491 }
492 }
493
494
495 void JMXStartRemoteDCmd::execute(TRAPS) {
496 ResourceMark rm(THREAD);
497 HandleMark hm(THREAD);
498
499 // Load and initialize the sun.management.Agent class
500 // invoke startRemoteManagementAgent(string) method to start
501 // the remote management server.
502 // throw java.lang.NoSuchMethodError if the method doesn't exist
503
504 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
505 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
506 instanceKlassHandle ik (THREAD, k);
507
508 JavaValue result(T_VOID);
509
510 // Pass all command line arguments to java as key=value,...
511 // All checks are done on java side
512
513 int len = 0;
514 stringStream options;
515 char comma[2] = {0,0};
516
517 // Leave default values on Agent.class side and pass only
518 // agruments explicitly set by user. All arguments passed
519 // to jcmd override properties with the same name set by
520 // command line with -D or by managmenent.properties
521 // file.
522 #define PUT_OPTION(a) \
523 if ( (a).is_set() ){ \
524 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (a).value()); \
525 comma[0] = ','; \
526 }
527
528 PUT_OPTION(_config_file);
529 PUT_OPTION(_jmxremote_port);
530 PUT_OPTION(_jmxremote_rmi_port);
531 PUT_OPTION(_jmxremote_ssl);
532 PUT_OPTION(_jmxremote_registry_ssl);
533 PUT_OPTION(_jmxremote_authenticate);
534 PUT_OPTION(_jmxremote_password_file);
535 PUT_OPTION(_jmxremote_access_file);
536 PUT_OPTION(_jmxremote_login_config);
537 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
538 PUT_OPTION(_jmxremote_ssl_enabled_protocols);
539 PUT_OPTION(_jmxremote_ssl_need_client_auth);
540 PUT_OPTION(_jmxremote_ssl_config_file);
541
542 #undef PUT_OPTION
543
544 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
545 JavaCalls::call_static(&result, ik, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
546 }
547
548 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
549 DCmd(output, heap_allocated)
550 {
551 // do nothing
552 }
553
554 void JMXStartLocalDCmd::execute(TRAPS) {
555 ResourceMark rm(THREAD);
556 HandleMark hm(THREAD);
557
558 // Load and initialize the sun.management.Agent class
559 // invoke startLocalManagementAgent(void) method to start
560 // the local management server
561 // throw java.lang.NoSuchMethodError if method doesn't exist
562
563 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
564 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
565 instanceKlassHandle ik (THREAD, k);
566
567 JavaValue result(T_VOID);
568 JavaCalls::call_static(&result, ik, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
569 }
570
571
572 void JMXStopRemoteDCmd::execute(TRAPS) {
573 ResourceMark rm(THREAD);
574 HandleMark hm(THREAD);
575
576 // Load and initialize the sun.management.Agent class
577 // invoke stopRemoteManagementAgent method to stop the
578 // management server
579 // throw java.lang.NoSuchMethodError if method doesn't exist
580
581 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
582 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
583 instanceKlassHandle ik (THREAD, k);
584
585 JavaValue result(T_VOID);
586 JavaCalls::call_static(&result, ik, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
587 }
588