Thu, 05 Jun 2008 15:57:56 -0700
6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2005-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_attachListener.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | volatile bool AttachListener::_initialized; |
duke@435 | 29 | |
duke@435 | 30 | // Implementation of "properties" command. |
duke@435 | 31 | // |
duke@435 | 32 | // Invokes sun.misc.VMSupport.serializePropertiesToByteArray to serialize |
duke@435 | 33 | // the system properties into a byte array. |
duke@435 | 34 | |
duke@435 | 35 | static klassOop load_and_initialize_klass(symbolHandle sh, TRAPS) { |
duke@435 | 36 | klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
duke@435 | 37 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 38 | if (ik->should_be_initialized()) { |
duke@435 | 39 | ik->initialize(CHECK_NULL); |
duke@435 | 40 | } |
duke@435 | 41 | return ik(); |
duke@435 | 42 | } |
duke@435 | 43 | |
duke@435 | 44 | static jint get_properties(AttachOperation* op, outputStream* out, symbolHandle serializePropertiesMethod) { |
duke@435 | 45 | Thread* THREAD = Thread::current(); |
duke@435 | 46 | HandleMark hm; |
duke@435 | 47 | |
duke@435 | 48 | // load sun.misc.VMSupport |
duke@435 | 49 | symbolHandle klass = vmSymbolHandles::sun_misc_VMSupport(); |
duke@435 | 50 | klassOop k = load_and_initialize_klass(klass, THREAD); |
duke@435 | 51 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 52 | java_lang_Throwable::print(PENDING_EXCEPTION, out); |
duke@435 | 53 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 54 | return JNI_ERR; |
duke@435 | 55 | } |
duke@435 | 56 | instanceKlassHandle ik(THREAD, k); |
duke@435 | 57 | |
duke@435 | 58 | // invoke the serializePropertiesToByteArray method |
duke@435 | 59 | JavaValue result(T_OBJECT); |
duke@435 | 60 | JavaCallArguments args; |
duke@435 | 61 | |
duke@435 | 62 | |
duke@435 | 63 | symbolHandle signature = vmSymbolHandles::serializePropertiesToByteArray_signature(); |
duke@435 | 64 | JavaCalls::call_static(&result, |
duke@435 | 65 | ik, |
duke@435 | 66 | serializePropertiesMethod, |
duke@435 | 67 | signature, |
duke@435 | 68 | &args, |
duke@435 | 69 | THREAD); |
duke@435 | 70 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 71 | java_lang_Throwable::print(PENDING_EXCEPTION, out); |
duke@435 | 72 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 73 | return JNI_ERR; |
duke@435 | 74 | } |
duke@435 | 75 | |
duke@435 | 76 | // The result should be a [B |
duke@435 | 77 | oop res = (oop)result.get_jobject(); |
duke@435 | 78 | assert(res->is_typeArray(), "just checking"); |
duke@435 | 79 | assert(typeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking"); |
duke@435 | 80 | |
duke@435 | 81 | // copy the bytes to the output stream |
duke@435 | 82 | typeArrayOop ba = typeArrayOop(res); |
duke@435 | 83 | jbyte* addr = typeArrayOop(res)->byte_at_addr(0); |
duke@435 | 84 | out->print_raw((const char*)addr, ba->length()); |
duke@435 | 85 | |
duke@435 | 86 | return JNI_OK; |
duke@435 | 87 | } |
duke@435 | 88 | |
duke@435 | 89 | // Implementation of "properties" command. |
duke@435 | 90 | static jint get_system_properties(AttachOperation* op, outputStream* out) { |
duke@435 | 91 | return get_properties(op, out, vmSymbolHandles::serializePropertiesToByteArray_name()); |
duke@435 | 92 | } |
duke@435 | 93 | |
duke@435 | 94 | // Implementation of "agent_properties" command. |
duke@435 | 95 | static jint get_agent_properties(AttachOperation* op, outputStream* out) { |
duke@435 | 96 | return get_properties(op, out, vmSymbolHandles::serializeAgentPropertiesToByteArray_name()); |
duke@435 | 97 | } |
duke@435 | 98 | |
duke@435 | 99 | // Implementation of "datadump" command. |
duke@435 | 100 | // |
duke@435 | 101 | // Raises a SIGBREAK signal so that VM dump threads, does deadlock detection, |
duke@435 | 102 | // etc. In theory this command should only post a DataDumpRequest to any |
duke@435 | 103 | // JVMTI environment that has enabled this event. However it's useful to |
duke@435 | 104 | // trigger the SIGBREAK handler. |
duke@435 | 105 | |
duke@435 | 106 | static jint data_dump(AttachOperation* op, outputStream* out) { |
duke@435 | 107 | if (!ReduceSignalUsage) { |
duke@435 | 108 | AttachListener::pd_data_dump(); |
duke@435 | 109 | } else { |
duke@435 | 110 | if (JvmtiExport::should_post_data_dump()) { |
duke@435 | 111 | JvmtiExport::post_data_dump(); |
duke@435 | 112 | } |
duke@435 | 113 | } |
duke@435 | 114 | return JNI_OK; |
duke@435 | 115 | } |
duke@435 | 116 | |
duke@435 | 117 | // Implementation of "threaddump" command - essentially a remote ctrl-break |
duke@435 | 118 | // |
duke@435 | 119 | static jint thread_dump(AttachOperation* op, outputStream* out) { |
duke@435 | 120 | bool print_concurrent_locks = false; |
duke@435 | 121 | if (op->arg(0) != NULL && strcmp(op->arg(0), "-l") == 0) { |
duke@435 | 122 | print_concurrent_locks = true; |
duke@435 | 123 | } |
duke@435 | 124 | |
duke@435 | 125 | // thread stacks |
duke@435 | 126 | VM_PrintThreads op1(out, print_concurrent_locks); |
duke@435 | 127 | VMThread::execute(&op1); |
duke@435 | 128 | |
duke@435 | 129 | // JNI global handles |
duke@435 | 130 | VM_PrintJNI op2(out); |
duke@435 | 131 | VMThread::execute(&op2); |
duke@435 | 132 | |
duke@435 | 133 | // Deadlock detection |
duke@435 | 134 | VM_FindDeadlocks op3(out); |
duke@435 | 135 | VMThread::execute(&op3); |
duke@435 | 136 | |
duke@435 | 137 | return JNI_OK; |
duke@435 | 138 | } |
duke@435 | 139 | |
duke@435 | 140 | #ifndef SERVICES_KERNEL // Heap dumping not supported |
duke@435 | 141 | // Implementation of "dumpheap" command. |
duke@435 | 142 | // |
duke@435 | 143 | // Input arguments :- |
duke@435 | 144 | // arg0: Name of the dump file |
duke@435 | 145 | // arg1: "-live" or "-all" |
duke@435 | 146 | jint dump_heap(AttachOperation* op, outputStream* out) { |
duke@435 | 147 | const char* path = op->arg(0); |
duke@435 | 148 | if (path == NULL || path[0] == '\0') { |
duke@435 | 149 | out->print_cr("No dump file specified"); |
duke@435 | 150 | } else { |
duke@435 | 151 | bool live_objects_only = true; // default is true to retain the behavior before this change is made |
duke@435 | 152 | const char* arg1 = op->arg(1); |
duke@435 | 153 | if (arg1 != NULL && (strlen(arg1) > 0)) { |
duke@435 | 154 | if (strcmp(arg1, "-all") != 0 && strcmp(arg1, "-live") != 0) { |
duke@435 | 155 | out->print_cr("Invalid argument to dumpheap operation: %s", arg1); |
duke@435 | 156 | return JNI_ERR; |
duke@435 | 157 | } |
duke@435 | 158 | live_objects_only = strcmp(arg1, "-live") == 0; |
duke@435 | 159 | } |
duke@435 | 160 | |
duke@435 | 161 | // Request a full GC before heap dump if live_objects_only = true |
duke@435 | 162 | // This helps reduces the amount of unreachable objects in the dump |
duke@435 | 163 | // and makes it easier to browse. |
duke@435 | 164 | HeapDumper dumper(live_objects_only /* request GC */); |
duke@435 | 165 | int res = dumper.dump(op->arg(0)); |
duke@435 | 166 | if (res == 0) { |
duke@435 | 167 | out->print_cr("Heap dump file created"); |
duke@435 | 168 | } else { |
duke@435 | 169 | // heap dump failed |
duke@435 | 170 | ResourceMark rm; |
duke@435 | 171 | char* error = dumper.error_as_C_string(); |
duke@435 | 172 | if (error == NULL) { |
duke@435 | 173 | out->print_cr("Dump failed - reason unknown"); |
duke@435 | 174 | } else { |
duke@435 | 175 | out->print_cr("%s", error); |
duke@435 | 176 | } |
duke@435 | 177 | } |
duke@435 | 178 | } |
duke@435 | 179 | return JNI_OK; |
duke@435 | 180 | } |
duke@435 | 181 | #endif // SERVICES_KERNEL |
duke@435 | 182 | |
duke@435 | 183 | // Implementation of "inspectheap" command |
duke@435 | 184 | // |
duke@435 | 185 | // Input arguments :- |
duke@435 | 186 | // arg0: "-live" or "-all" |
duke@435 | 187 | static jint heap_inspection(AttachOperation* op, outputStream* out) { |
duke@435 | 188 | bool live_objects_only = true; // default is true to retain the behavior before this change is made |
duke@435 | 189 | const char* arg0 = op->arg(0); |
duke@435 | 190 | if (arg0 != NULL && (strlen(arg0) > 0)) { |
duke@435 | 191 | if (strcmp(arg0, "-all") != 0 && strcmp(arg0, "-live") != 0) { |
duke@435 | 192 | out->print_cr("Invalid argument to inspectheap operation: %s", arg0); |
duke@435 | 193 | return JNI_ERR; |
duke@435 | 194 | } |
duke@435 | 195 | live_objects_only = strcmp(arg0, "-live") == 0; |
duke@435 | 196 | } |
duke@435 | 197 | VM_GC_HeapInspection heapop(out, live_objects_only /* request gc */); |
duke@435 | 198 | VMThread::execute(&heapop); |
duke@435 | 199 | return JNI_OK; |
duke@435 | 200 | } |
duke@435 | 201 | |
duke@435 | 202 | // set a boolean global flag using value from AttachOperation |
duke@435 | 203 | static jint set_bool_flag(const char* name, AttachOperation* op, outputStream* out) { |
duke@435 | 204 | bool value = true; |
duke@435 | 205 | const char* arg1; |
duke@435 | 206 | if ((arg1 = op->arg(1)) != NULL) { |
duke@435 | 207 | int tmp; |
duke@435 | 208 | int n = sscanf(arg1, "%d", &tmp); |
duke@435 | 209 | if (n != 1) { |
duke@435 | 210 | out->print_cr("flag value has to be boolean (1 or 0)"); |
duke@435 | 211 | return JNI_ERR; |
duke@435 | 212 | } |
duke@435 | 213 | value = (tmp != 0); |
duke@435 | 214 | } |
duke@435 | 215 | bool res = CommandLineFlags::boolAtPut((char*)name, &value, ATTACH_ON_DEMAND); |
duke@435 | 216 | if (! res) { |
duke@435 | 217 | out->print_cr("setting flag %s failed", name); |
duke@435 | 218 | } |
duke@435 | 219 | return res? JNI_OK : JNI_ERR; |
duke@435 | 220 | } |
duke@435 | 221 | |
duke@435 | 222 | // set a intx global flag using value from AttachOperation |
duke@435 | 223 | static jint set_intx_flag(const char* name, AttachOperation* op, outputStream* out) { |
duke@435 | 224 | intx value; |
duke@435 | 225 | const char* arg1; |
duke@435 | 226 | if ((arg1 = op->arg(1)) != NULL) { |
duke@435 | 227 | int n = sscanf(arg1, INTX_FORMAT, &value); |
duke@435 | 228 | if (n != 1) { |
duke@435 | 229 | out->print_cr("flag value has to be integer"); |
duke@435 | 230 | return JNI_ERR; |
duke@435 | 231 | } |
duke@435 | 232 | } |
duke@435 | 233 | bool res = CommandLineFlags::intxAtPut((char*)name, &value, ATTACH_ON_DEMAND); |
duke@435 | 234 | if (! res) { |
duke@435 | 235 | out->print_cr("setting flag %s failed", name); |
duke@435 | 236 | } |
duke@435 | 237 | |
duke@435 | 238 | return res? JNI_OK : JNI_ERR; |
duke@435 | 239 | } |
duke@435 | 240 | |
duke@435 | 241 | // set a uintx global flag using value from AttachOperation |
duke@435 | 242 | static jint set_uintx_flag(const char* name, AttachOperation* op, outputStream* out) { |
duke@435 | 243 | uintx value; |
duke@435 | 244 | const char* arg1; |
duke@435 | 245 | if ((arg1 = op->arg(1)) != NULL) { |
duke@435 | 246 | int n = sscanf(arg1, UINTX_FORMAT, &value); |
duke@435 | 247 | if (n != 1) { |
duke@435 | 248 | out->print_cr("flag value has to be integer"); |
duke@435 | 249 | return JNI_ERR; |
duke@435 | 250 | } |
duke@435 | 251 | } |
duke@435 | 252 | bool res = CommandLineFlags::uintxAtPut((char*)name, &value, ATTACH_ON_DEMAND); |
duke@435 | 253 | if (! res) { |
duke@435 | 254 | out->print_cr("setting flag %s failed", name); |
duke@435 | 255 | } |
duke@435 | 256 | |
duke@435 | 257 | return res? JNI_OK : JNI_ERR; |
duke@435 | 258 | } |
duke@435 | 259 | |
duke@435 | 260 | // set a string global flag using value from AttachOperation |
duke@435 | 261 | static jint set_ccstr_flag(const char* name, AttachOperation* op, outputStream* out) { |
duke@435 | 262 | const char* value; |
duke@435 | 263 | if ((value = op->arg(1)) == NULL) { |
duke@435 | 264 | out->print_cr("flag value has to be a string"); |
duke@435 | 265 | return JNI_ERR; |
duke@435 | 266 | } |
duke@435 | 267 | bool res = CommandLineFlags::ccstrAtPut((char*)name, &value, ATTACH_ON_DEMAND); |
duke@435 | 268 | if (res) { |
duke@435 | 269 | FREE_C_HEAP_ARRAY(char, value); |
duke@435 | 270 | } else { |
duke@435 | 271 | out->print_cr("setting flag %s failed", name); |
duke@435 | 272 | } |
duke@435 | 273 | |
duke@435 | 274 | return res? JNI_OK : JNI_ERR; |
duke@435 | 275 | } |
duke@435 | 276 | |
duke@435 | 277 | // Implementation of "setflag" command |
duke@435 | 278 | static jint set_flag(AttachOperation* op, outputStream* out) { |
duke@435 | 279 | |
duke@435 | 280 | const char* name = NULL; |
duke@435 | 281 | if ((name = op->arg(0)) == NULL) { |
duke@435 | 282 | out->print_cr("flag name is missing"); |
duke@435 | 283 | return JNI_ERR; |
duke@435 | 284 | } |
duke@435 | 285 | |
duke@435 | 286 | Flag* f = Flag::find_flag((char*)name, strlen(name)); |
duke@435 | 287 | if (f && f->is_external() && f->is_writeable()) { |
duke@435 | 288 | if (f->is_bool()) { |
duke@435 | 289 | return set_bool_flag(name, op, out); |
duke@435 | 290 | } else if (f->is_intx()) { |
duke@435 | 291 | return set_intx_flag(name, op, out); |
duke@435 | 292 | } else if (f->is_uintx()) { |
duke@435 | 293 | return set_uintx_flag(name, op, out); |
duke@435 | 294 | } else if (f->is_ccstr()) { |
duke@435 | 295 | return set_ccstr_flag(name, op, out); |
duke@435 | 296 | } else { |
duke@435 | 297 | ShouldNotReachHere(); |
duke@435 | 298 | return JNI_ERR; |
duke@435 | 299 | } |
duke@435 | 300 | } else { |
duke@435 | 301 | return AttachListener::pd_set_flag(op, out); |
duke@435 | 302 | } |
duke@435 | 303 | } |
duke@435 | 304 | |
duke@435 | 305 | // Implementation of "printflag" command |
duke@435 | 306 | static jint print_flag(AttachOperation* op, outputStream* out) { |
duke@435 | 307 | const char* name = NULL; |
duke@435 | 308 | if ((name = op->arg(0)) == NULL) { |
duke@435 | 309 | out->print_cr("flag name is missing"); |
duke@435 | 310 | return JNI_ERR; |
duke@435 | 311 | } |
duke@435 | 312 | Flag* f = Flag::find_flag((char*)name, strlen(name)); |
duke@435 | 313 | if (f) { |
duke@435 | 314 | f->print_as_flag(out); |
duke@435 | 315 | out->print_cr(""); |
duke@435 | 316 | } else { |
duke@435 | 317 | out->print_cr("no such flag '%s'", name); |
duke@435 | 318 | } |
duke@435 | 319 | return JNI_OK; |
duke@435 | 320 | } |
duke@435 | 321 | |
duke@435 | 322 | // Table to map operation names to functions. |
duke@435 | 323 | |
duke@435 | 324 | // names must be of length <= AttachOperation::name_length_max |
duke@435 | 325 | static AttachOperationFunctionInfo funcs[] = { |
duke@435 | 326 | { "agentProperties", get_agent_properties }, |
duke@435 | 327 | { "datadump", data_dump }, |
duke@435 | 328 | #ifndef SERVICES_KERNEL |
duke@435 | 329 | { "dumpheap", dump_heap }, |
duke@435 | 330 | #endif // SERVICES_KERNEL |
duke@435 | 331 | { "load", JvmtiExport::load_agent_library }, |
duke@435 | 332 | { "properties", get_system_properties }, |
duke@435 | 333 | { "threaddump", thread_dump }, |
duke@435 | 334 | { "inspectheap", heap_inspection }, |
duke@435 | 335 | { "setflag", set_flag }, |
duke@435 | 336 | { "printflag", print_flag }, |
duke@435 | 337 | { NULL, NULL } |
duke@435 | 338 | }; |
duke@435 | 339 | |
duke@435 | 340 | |
duke@435 | 341 | |
duke@435 | 342 | // The Attach Listener threads services a queue. It dequeues an operation |
duke@435 | 343 | // from the queue, examines the operation name (command), and dispatches |
duke@435 | 344 | // to the corresponding function to perform the operation. |
duke@435 | 345 | |
duke@435 | 346 | static void attach_listener_thread_entry(JavaThread* thread, TRAPS) { |
duke@435 | 347 | os::set_priority(thread, NearMaxPriority); |
duke@435 | 348 | |
duke@435 | 349 | if (AttachListener::pd_init() != 0) { |
duke@435 | 350 | return; |
duke@435 | 351 | } |
duke@435 | 352 | AttachListener::set_initialized(); |
duke@435 | 353 | |
duke@435 | 354 | for (;;) { |
duke@435 | 355 | AttachOperation* op = AttachListener::dequeue(); |
duke@435 | 356 | if (op == NULL) { |
duke@435 | 357 | return; // dequeue failed or shutdown |
duke@435 | 358 | } |
duke@435 | 359 | |
duke@435 | 360 | ResourceMark rm; |
duke@435 | 361 | bufferedStream st; |
duke@435 | 362 | jint res = JNI_OK; |
duke@435 | 363 | |
duke@435 | 364 | // handle special detachall operation |
duke@435 | 365 | if (strcmp(op->name(), AttachOperation::detachall_operation_name()) == 0) { |
duke@435 | 366 | AttachListener::detachall(); |
duke@435 | 367 | } else { |
duke@435 | 368 | // find the function to dispatch too |
duke@435 | 369 | AttachOperationFunctionInfo* info = NULL; |
duke@435 | 370 | for (int i=0; funcs[i].name != NULL; i++) { |
duke@435 | 371 | const char* name = funcs[i].name; |
duke@435 | 372 | assert(strlen(name) <= AttachOperation::name_length_max, "operation <= name_length_max"); |
duke@435 | 373 | if (strcmp(op->name(), name) == 0) { |
duke@435 | 374 | info = &(funcs[i]); |
duke@435 | 375 | break; |
duke@435 | 376 | } |
duke@435 | 377 | } |
duke@435 | 378 | |
duke@435 | 379 | // check for platform dependent attach operation |
duke@435 | 380 | if (info == NULL) { |
duke@435 | 381 | info = AttachListener::pd_find_operation(op->name()); |
duke@435 | 382 | } |
duke@435 | 383 | |
duke@435 | 384 | if (info != NULL) { |
duke@435 | 385 | // dispatch to the function that implements this operation |
duke@435 | 386 | res = (info->func)(op, &st); |
duke@435 | 387 | } else { |
duke@435 | 388 | st.print("Operation %s not recognized!", op->name()); |
duke@435 | 389 | res = JNI_ERR; |
duke@435 | 390 | } |
duke@435 | 391 | } |
duke@435 | 392 | |
duke@435 | 393 | // operation complete - send result and output to client |
duke@435 | 394 | op->complete(res, &st); |
duke@435 | 395 | } |
duke@435 | 396 | } |
duke@435 | 397 | |
duke@435 | 398 | // Starts the Attach Listener thread |
duke@435 | 399 | void AttachListener::init() { |
duke@435 | 400 | EXCEPTION_MARK; |
duke@435 | 401 | klassOop k = SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(), true, CHECK); |
duke@435 | 402 | instanceKlassHandle klass (THREAD, k); |
duke@435 | 403 | instanceHandle thread_oop = klass->allocate_instance_handle(CHECK); |
duke@435 | 404 | |
duke@435 | 405 | const char thread_name[] = "Attach Listener"; |
duke@435 | 406 | Handle string = java_lang_String::create_from_str(thread_name, CHECK); |
duke@435 | 407 | |
duke@435 | 408 | // Initialize thread_oop to put it into the system threadGroup |
duke@435 | 409 | Handle thread_group (THREAD, Universe::system_thread_group()); |
duke@435 | 410 | JavaValue result(T_VOID); |
duke@435 | 411 | JavaCalls::call_special(&result, thread_oop, |
duke@435 | 412 | klass, |
duke@435 | 413 | vmSymbolHandles::object_initializer_name(), |
duke@435 | 414 | vmSymbolHandles::threadgroup_string_void_signature(), |
duke@435 | 415 | thread_group, |
duke@435 | 416 | string, |
duke@435 | 417 | CHECK); |
duke@435 | 418 | |
duke@435 | 419 | KlassHandle group(THREAD, SystemDictionary::threadGroup_klass()); |
duke@435 | 420 | JavaCalls::call_special(&result, |
duke@435 | 421 | thread_group, |
duke@435 | 422 | group, |
duke@435 | 423 | vmSymbolHandles::add_method_name(), |
duke@435 | 424 | vmSymbolHandles::thread_void_signature(), |
duke@435 | 425 | thread_oop, // ARG 1 |
duke@435 | 426 | CHECK); |
duke@435 | 427 | |
duke@435 | 428 | { MutexLocker mu(Threads_lock); |
duke@435 | 429 | JavaThread* listener_thread = new JavaThread(&attach_listener_thread_entry); |
duke@435 | 430 | |
duke@435 | 431 | // Check that thread and osthread were created |
duke@435 | 432 | if (listener_thread == NULL || listener_thread->osthread() == NULL) { |
duke@435 | 433 | vm_exit_during_initialization("java.lang.OutOfMemoryError", |
duke@435 | 434 | "unable to create new native thread"); |
duke@435 | 435 | } |
duke@435 | 436 | |
duke@435 | 437 | java_lang_Thread::set_thread(thread_oop(), listener_thread); |
duke@435 | 438 | java_lang_Thread::set_daemon(thread_oop()); |
duke@435 | 439 | |
duke@435 | 440 | listener_thread->set_threadObj(thread_oop()); |
duke@435 | 441 | Threads::add(listener_thread); |
duke@435 | 442 | Thread::start(listener_thread); |
duke@435 | 443 | } |
duke@435 | 444 | } |
duke@435 | 445 | |
duke@435 | 446 | // Performs clean-up tasks on platforms where we can detect that the last |
duke@435 | 447 | // client has detached |
duke@435 | 448 | void AttachListener::detachall() { |
duke@435 | 449 | // call the platform dependent clean-up |
duke@435 | 450 | pd_detachall(); |
duke@435 | 451 | } |