Mon, 09 Jan 2012 10:27:24 +0100
7120511: Add diagnostic commands
Reviewed-by: acorn, phh, dcubed, sspitsyn
fparain@3329 | 1 | /* |
fparain@3329 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
fparain@3329 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
fparain@3329 | 4 | * |
fparain@3329 | 5 | * This code is free software; you can redistribute it and/or modify it |
fparain@3329 | 6 | * under the terms of the GNU General Public License version 2 only, as |
fparain@3329 | 7 | * published by the Free Software Foundation. |
fparain@3329 | 8 | * |
fparain@3329 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
fparain@3329 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
fparain@3329 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
fparain@3329 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
fparain@3329 | 13 | * accompanied this code). |
fparain@3329 | 14 | * |
fparain@3329 | 15 | * You should have received a copy of the GNU General Public License version |
fparain@3329 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
fparain@3329 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
fparain@3329 | 18 | * |
fparain@3329 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
fparain@3329 | 20 | * or visit www.oracle.com if you need additional information or have any |
fparain@3329 | 21 | * questions. |
fparain@3329 | 22 | * |
fparain@3329 | 23 | */ |
fparain@3329 | 24 | |
fparain@3329 | 25 | #include "precompiled.hpp" |
fparain@3402 | 26 | #include "gc_implementation/shared/vmGCOperations.hpp" |
fparain@3402 | 27 | #include "runtime/javaCalls.hpp" |
fparain@3329 | 28 | #include "services/diagnosticArgument.hpp" |
fparain@3329 | 29 | #include "services/diagnosticCommand.hpp" |
fparain@3329 | 30 | #include "services/diagnosticFramework.hpp" |
fparain@3402 | 31 | #include "services/heapDumper.hpp" |
fparain@3402 | 32 | #include "services/management.hpp" |
fparain@3329 | 33 | |
fparain@3402 | 34 | HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap), |
fparain@3329 | 35 | _all("-all", "Show help for all commands", "BOOLEAN", false, "false"), |
fparain@3329 | 36 | _cmd("command name", "The name of the command for which we want help", |
fparain@3329 | 37 | "STRING", false) { |
fparain@3329 | 38 | _dcmdparser.add_dcmd_option(&_all); |
fparain@3329 | 39 | _dcmdparser.add_dcmd_argument(&_cmd); |
fparain@3329 | 40 | }; |
fparain@3329 | 41 | |
fparain@3329 | 42 | void HelpDCmd::execute(TRAPS) { |
fparain@3329 | 43 | if (_all.value()) { |
fparain@3329 | 44 | GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(); |
fparain@3329 | 45 | for (int i = 0; i < cmd_list->length(); i++) { |
fparain@3329 | 46 | DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i), |
fparain@3329 | 47 | strlen(cmd_list->at(i))); |
fparain@3329 | 48 | if (!factory->is_hidden()) { |
fparain@3329 | 49 | output()->print_cr("%s%s", factory->name(), |
fparain@3329 | 50 | factory->is_enabled() ? "" : " [disabled]"); |
fparain@3329 | 51 | output()->print_cr("\t%s", factory->description()); |
fparain@3329 | 52 | output()->cr(); |
fparain@3329 | 53 | } |
fparain@3329 | 54 | factory = factory->next(); |
fparain@3329 | 55 | } |
fparain@3329 | 56 | } else if (_cmd.has_value()) { |
fparain@3329 | 57 | DCmd* cmd = NULL; |
fparain@3329 | 58 | DCmdFactory* factory = DCmdFactory::factory(_cmd.value(), |
fparain@3329 | 59 | strlen(_cmd.value())); |
fparain@3329 | 60 | if (factory != NULL) { |
fparain@3329 | 61 | output()->print_cr("%s%s", factory->name(), |
fparain@3329 | 62 | factory->is_enabled() ? "" : " [disabled]"); |
fparain@3329 | 63 | output()->print_cr(factory->description()); |
fparain@3329 | 64 | output()->print_cr("\nImpact: %s", factory->impact()); |
fparain@3402 | 65 | output()->cr(); |
fparain@3329 | 66 | cmd = factory->create_resource_instance(output()); |
fparain@3329 | 67 | if (cmd != NULL) { |
fparain@3329 | 68 | DCmdMark mark(cmd); |
fparain@3402 | 69 | cmd->print_help(factory->name()); |
fparain@3329 | 70 | } |
fparain@3329 | 71 | } else { |
fparain@3329 | 72 | output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value()); |
fparain@3329 | 73 | } |
fparain@3329 | 74 | } else { |
fparain@3329 | 75 | output()->print_cr("The following commands are available:"); |
fparain@3329 | 76 | GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(); |
fparain@3329 | 77 | for (int i = 0; i < cmd_list->length(); i++) { |
fparain@3329 | 78 | DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i), |
fparain@3329 | 79 | strlen(cmd_list->at(i))); |
fparain@3329 | 80 | if (!factory->is_hidden()) { |
fparain@3329 | 81 | output()->print_cr("%s%s", factory->name(), |
fparain@3329 | 82 | factory->is_enabled() ? "" : " [disabled]"); |
fparain@3329 | 83 | } |
fparain@3329 | 84 | factory = factory->_next; |
fparain@3329 | 85 | } |
fparain@3329 | 86 | output()->print_cr("\nFor more information about a specific command use 'help <command>'."); |
fparain@3329 | 87 | } |
fparain@3329 | 88 | } |
fparain@3329 | 89 | |
fparain@3329 | 90 | int HelpDCmd::num_arguments() { |
fparain@3329 | 91 | ResourceMark rm; |
fparain@3329 | 92 | HelpDCmd* dcmd = new HelpDCmd(NULL, false); |
fparain@3329 | 93 | if (dcmd != NULL) { |
fparain@3329 | 94 | DCmdMark mark(dcmd); |
fparain@3329 | 95 | return dcmd->_dcmdparser.num_arguments(); |
fparain@3329 | 96 | } else { |
fparain@3329 | 97 | return 0; |
fparain@3329 | 98 | } |
fparain@3329 | 99 | } |
fparain@3329 | 100 | |
fparain@3329 | 101 | void VersionDCmd::execute(TRAPS) { |
fparain@3329 | 102 | output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(), |
fparain@3329 | 103 | Abstract_VM_Version::vm_release()); |
fparain@3329 | 104 | JDK_Version jdk_version = JDK_Version::current(); |
fparain@3329 | 105 | if (jdk_version.update_version() > 0) { |
fparain@3329 | 106 | output()->print_cr("JDK %d.%d_%02d", jdk_version.major_version(), |
fparain@3329 | 107 | jdk_version.minor_version(), jdk_version.update_version()); |
fparain@3329 | 108 | } else { |
fparain@3329 | 109 | output()->print_cr("JDK %d.%d", jdk_version.major_version(), |
fparain@3329 | 110 | jdk_version.minor_version()); |
fparain@3329 | 111 | } |
fparain@3329 | 112 | } |
fparain@3402 | 113 | |
fparain@3402 | 114 | PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) : |
fparain@3402 | 115 | DCmdWithParser(output, heap), |
fparain@3402 | 116 | _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") { |
fparain@3402 | 117 | _dcmdparser.add_dcmd_option(&_all); |
fparain@3402 | 118 | } |
fparain@3402 | 119 | |
fparain@3402 | 120 | void PrintVMFlagsDCmd::execute(TRAPS) { |
fparain@3402 | 121 | if (_all.value()) { |
fparain@3402 | 122 | CommandLineFlags::printFlags(output(), true); |
fparain@3402 | 123 | } else { |
fparain@3402 | 124 | CommandLineFlags::printSetFlags(output()); |
fparain@3402 | 125 | } |
fparain@3402 | 126 | } |
fparain@3402 | 127 | |
fparain@3402 | 128 | int PrintVMFlagsDCmd::num_arguments() { |
fparain@3402 | 129 | ResourceMark rm; |
fparain@3402 | 130 | PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false); |
fparain@3402 | 131 | if (dcmd != NULL) { |
fparain@3402 | 132 | DCmdMark mark(dcmd); |
fparain@3402 | 133 | return dcmd->_dcmdparser.num_arguments(); |
fparain@3402 | 134 | } else { |
fparain@3402 | 135 | return 0; |
fparain@3402 | 136 | } |
fparain@3402 | 137 | } |
fparain@3402 | 138 | |
fparain@3402 | 139 | void PrintSystemPropertiesDCmd::execute(TRAPS) { |
fparain@3402 | 140 | // load sun.misc.VMSupport |
fparain@3402 | 141 | Symbol* klass = vmSymbols::sun_misc_VMSupport(); |
fparain@3402 | 142 | klassOop k = SystemDictionary::resolve_or_fail(klass, true, CHECK); |
fparain@3402 | 143 | instanceKlassHandle ik (THREAD, k); |
fparain@3402 | 144 | if (ik->should_be_initialized()) { |
fparain@3402 | 145 | ik->initialize(THREAD); |
fparain@3402 | 146 | } |
fparain@3402 | 147 | if (HAS_PENDING_EXCEPTION) { |
fparain@3402 | 148 | java_lang_Throwable::print(PENDING_EXCEPTION, output()); |
fparain@3402 | 149 | output()->cr(); |
fparain@3402 | 150 | CLEAR_PENDING_EXCEPTION; |
fparain@3402 | 151 | return; |
fparain@3402 | 152 | } |
fparain@3402 | 153 | |
fparain@3402 | 154 | // invoke the serializePropertiesToByteArray method |
fparain@3402 | 155 | JavaValue result(T_OBJECT); |
fparain@3402 | 156 | JavaCallArguments args; |
fparain@3402 | 157 | |
fparain@3402 | 158 | Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature(); |
fparain@3402 | 159 | JavaCalls::call_static(&result, |
fparain@3402 | 160 | ik, |
fparain@3402 | 161 | vmSymbols::serializePropertiesToByteArray_name(), |
fparain@3402 | 162 | signature, |
fparain@3402 | 163 | &args, |
fparain@3402 | 164 | THREAD); |
fparain@3402 | 165 | if (HAS_PENDING_EXCEPTION) { |
fparain@3402 | 166 | java_lang_Throwable::print(PENDING_EXCEPTION, output()); |
fparain@3402 | 167 | output()->cr(); |
fparain@3402 | 168 | CLEAR_PENDING_EXCEPTION; |
fparain@3402 | 169 | return; |
fparain@3402 | 170 | } |
fparain@3402 | 171 | |
fparain@3402 | 172 | // The result should be a [B |
fparain@3402 | 173 | oop res = (oop)result.get_jobject(); |
fparain@3402 | 174 | assert(res->is_typeArray(), "just checking"); |
fparain@3402 | 175 | assert(typeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking"); |
fparain@3402 | 176 | |
fparain@3402 | 177 | // copy the bytes to the output stream |
fparain@3402 | 178 | typeArrayOop ba = typeArrayOop(res); |
fparain@3402 | 179 | jbyte* addr = typeArrayOop(res)->byte_at_addr(0); |
fparain@3402 | 180 | output()->print_raw((const char*)addr, ba->length()); |
fparain@3402 | 181 | } |
fparain@3402 | 182 | |
fparain@3402 | 183 | VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) : |
fparain@3402 | 184 | DCmdWithParser(output, heap), |
fparain@3402 | 185 | _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") { |
fparain@3402 | 186 | _dcmdparser.add_dcmd_option(&_date); |
fparain@3402 | 187 | } |
fparain@3402 | 188 | |
fparain@3402 | 189 | void VMUptimeDCmd::execute(TRAPS) { |
fparain@3402 | 190 | if (_date.value()) { |
fparain@3402 | 191 | output()->date_stamp(true, "", ": "); |
fparain@3402 | 192 | } |
fparain@3402 | 193 | output()->time_stamp().update_to(tty->time_stamp().ticks()); |
fparain@3402 | 194 | output()->stamp(); |
fparain@3402 | 195 | output()->print_cr(" s"); |
fparain@3402 | 196 | } |
fparain@3402 | 197 | |
fparain@3402 | 198 | int VMUptimeDCmd::num_arguments() { |
fparain@3402 | 199 | ResourceMark rm; |
fparain@3402 | 200 | VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false); |
fparain@3402 | 201 | if (dcmd != NULL) { |
fparain@3402 | 202 | DCmdMark mark(dcmd); |
fparain@3402 | 203 | return dcmd->_dcmdparser.num_arguments(); |
fparain@3402 | 204 | } else { |
fparain@3402 | 205 | return 0; |
fparain@3402 | 206 | } |
fparain@3402 | 207 | } |
fparain@3402 | 208 | |
fparain@3402 | 209 | void SystemGCDCmd::execute(TRAPS) { |
fparain@3402 | 210 | Universe::heap()->collect(GCCause::_java_lang_system_gc); |
fparain@3402 | 211 | } |
fparain@3402 | 212 | |
fparain@3402 | 213 | void RunFinalizationDCmd::execute(TRAPS) { |
fparain@3402 | 214 | klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(), |
fparain@3402 | 215 | true, CHECK); |
fparain@3402 | 216 | instanceKlassHandle klass(THREAD, k); |
fparain@3402 | 217 | JavaValue result(T_VOID); |
fparain@3402 | 218 | JavaCalls::call_static(&result, klass, |
fparain@3402 | 219 | vmSymbols::run_finalization_name(), |
fparain@3402 | 220 | vmSymbols::void_method_signature(), CHECK); |
fparain@3402 | 221 | } |
fparain@3402 | 222 | |
fparain@3402 | 223 | #ifndef SERVICES_KERNEL // Heap dumping not supported |
fparain@3402 | 224 | HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) : |
fparain@3402 | 225 | DCmdWithParser(output, heap), |
fparain@3402 | 226 | _filename("filename","Name of the dump file", "STRING",true), |
fparain@3402 | 227 | _all("-all", "Dump all objects, including unreachable objects", |
fparain@3402 | 228 | "BOOLEAN", false, "false") { |
fparain@3402 | 229 | _dcmdparser.add_dcmd_option(&_all); |
fparain@3402 | 230 | _dcmdparser.add_dcmd_argument(&_filename); |
fparain@3402 | 231 | } |
fparain@3402 | 232 | |
fparain@3402 | 233 | void HeapDumpDCmd::execute(TRAPS) { |
fparain@3402 | 234 | // Request a full GC before heap dump if _all is false |
fparain@3402 | 235 | // This helps reduces the amount of unreachable objects in the dump |
fparain@3402 | 236 | // and makes it easier to browse. |
fparain@3402 | 237 | HeapDumper dumper(!_all.value() /* request GC if _all is false*/); |
fparain@3402 | 238 | int res = dumper.dump(_filename.value()); |
fparain@3402 | 239 | if (res == 0) { |
fparain@3402 | 240 | output()->print_cr("Heap dump file created"); |
fparain@3402 | 241 | } else { |
fparain@3402 | 242 | // heap dump failed |
fparain@3402 | 243 | ResourceMark rm; |
fparain@3402 | 244 | char* error = dumper.error_as_C_string(); |
fparain@3402 | 245 | if (error == NULL) { |
fparain@3402 | 246 | output()->print_cr("Dump failed - reason unknown"); |
fparain@3402 | 247 | } else { |
fparain@3402 | 248 | output()->print_cr("%s", error); |
fparain@3402 | 249 | } |
fparain@3402 | 250 | } |
fparain@3402 | 251 | } |
fparain@3402 | 252 | |
fparain@3402 | 253 | int HeapDumpDCmd::num_arguments() { |
fparain@3402 | 254 | ResourceMark rm; |
fparain@3402 | 255 | HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false); |
fparain@3402 | 256 | if (dcmd != NULL) { |
fparain@3402 | 257 | DCmdMark mark(dcmd); |
fparain@3402 | 258 | return dcmd->_dcmdparser.num_arguments(); |
fparain@3402 | 259 | } else { |
fparain@3402 | 260 | return 0; |
fparain@3402 | 261 | } |
fparain@3402 | 262 | } |
fparain@3402 | 263 | #endif // SERVICES_KERNEL |
fparain@3402 | 264 | |
fparain@3402 | 265 | ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) : |
fparain@3402 | 266 | DCmdWithParser(output, heap), |
fparain@3402 | 267 | _all("-all", "Inspect all objects, including unreachable objects", |
fparain@3402 | 268 | "BOOLEAN", false, "false") { |
fparain@3402 | 269 | _dcmdparser.add_dcmd_option(&_all); |
fparain@3402 | 270 | } |
fparain@3402 | 271 | |
fparain@3402 | 272 | void ClassHistogramDCmd::execute(TRAPS) { |
fparain@3402 | 273 | VM_GC_HeapInspection heapop(output(), |
fparain@3402 | 274 | !_all.value() /* request full gc if false */, |
fparain@3402 | 275 | true /* need_prologue */); |
fparain@3402 | 276 | VMThread::execute(&heapop); |
fparain@3402 | 277 | } |
fparain@3402 | 278 | |
fparain@3402 | 279 | int ClassHistogramDCmd::num_arguments() { |
fparain@3402 | 280 | ResourceMark rm; |
fparain@3402 | 281 | ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false); |
fparain@3402 | 282 | if (dcmd != NULL) { |
fparain@3402 | 283 | DCmdMark mark(dcmd); |
fparain@3402 | 284 | return dcmd->_dcmdparser.num_arguments(); |
fparain@3402 | 285 | } else { |
fparain@3402 | 286 | return 0; |
fparain@3402 | 287 | } |
fparain@3402 | 288 | } |
fparain@3402 | 289 | |
fparain@3402 | 290 | ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) : |
fparain@3402 | 291 | DCmdWithParser(output, heap), |
fparain@3402 | 292 | _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") { |
fparain@3402 | 293 | _dcmdparser.add_dcmd_option(&_locks); |
fparain@3402 | 294 | } |
fparain@3402 | 295 | |
fparain@3402 | 296 | void ThreadDumpDCmd::execute(TRAPS) { |
fparain@3402 | 297 | // thread stacks |
fparain@3402 | 298 | VM_PrintThreads op1(output(), _locks.value()); |
fparain@3402 | 299 | VMThread::execute(&op1); |
fparain@3402 | 300 | |
fparain@3402 | 301 | // JNI global handles |
fparain@3402 | 302 | VM_PrintJNI op2(output()); |
fparain@3402 | 303 | VMThread::execute(&op2); |
fparain@3402 | 304 | |
fparain@3402 | 305 | // Deadlock detection |
fparain@3402 | 306 | VM_FindDeadlocks op3(output()); |
fparain@3402 | 307 | VMThread::execute(&op3); |
fparain@3402 | 308 | } |
fparain@3402 | 309 | |
fparain@3402 | 310 | int ThreadDumpDCmd::num_arguments() { |
fparain@3402 | 311 | ResourceMark rm; |
fparain@3402 | 312 | ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false); |
fparain@3402 | 313 | if (dcmd != NULL) { |
fparain@3402 | 314 | DCmdMark mark(dcmd); |
fparain@3402 | 315 | return dcmd->_dcmdparser.num_arguments(); |
fparain@3402 | 316 | } else { |
fparain@3402 | 317 | return 0; |
fparain@3402 | 318 | } |
fparain@3402 | 319 | } |