392 }
393 }
394
395 bool AttachListener::has_init_error(TRAPS) {
396 if (HAS_PENDING_EXCEPTION) {
397 tty->print_cr("Exception in VM (AttachListener::init) : ");
398 java_lang_Throwable::print(PENDING_EXCEPTION, tty);
399 tty->cr();
400
401 CLEAR_PENDING_EXCEPTION;
402
403 return true;
404 } else {
405 return false;
406 }
407 }
408
409 // Starts the Attach Listener thread
410 void AttachListener::init() {
411 EXCEPTION_MARK;
412 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, THREAD);
413 if (has_init_error(THREAD)) {
414 return;
415 }
416
417 InstanceKlass* klass = InstanceKlass::cast(k);
418 instanceHandle thread_oop = klass->allocate_instance_handle(THREAD);
419 if (has_init_error(THREAD)) {
420 return;
421 }
422
423 const char thread_name[] = "Attach Listener";
424 Handle string = java_lang_String::create_from_str(thread_name, THREAD);
425 if (has_init_error(THREAD)) {
426 return;
427 }
428
429 // Initialize thread_oop to put it into the system threadGroup
430 Handle thread_group (THREAD, Universe::system_thread_group());
431 JavaValue result(T_VOID);
432 JavaCalls::call_special(&result, thread_oop,
433 klass,
434 vmSymbols::object_initializer_name(),
435 vmSymbols::threadgroup_string_void_signature(),
436 thread_group,
437 string,
438 THREAD);
439
440 if (has_init_error(THREAD)) {
441 return;
442 }
443
444 Klass* group = SystemDictionary::ThreadGroup_klass();
445 JavaCalls::call_special(&result,
446 thread_group,
447 group,
448 vmSymbols::add_method_name(),
449 vmSymbols::thread_void_signature(),
450 thread_oop, // ARG 1
451 THREAD);
452 if (has_init_error(THREAD)) {
453 return;
454 }
455
456 { MutexLocker mu(Threads_lock);
457 JavaThread* listener_thread = new JavaThread(&attach_listener_thread_entry);
458
459 // Check that thread and osthread were created
460 if (listener_thread == NULL || listener_thread->osthread() == NULL) {
461 vm_exit_during_initialization("java.lang.OutOfMemoryError",
462 os::native_thread_creation_failed_msg());
463 }
464
465 java_lang_Thread::set_thread(thread_oop(), listener_thread);
466 java_lang_Thread::set_daemon(thread_oop());
467
468 listener_thread->set_threadObj(thread_oop());
469 Threads::add(listener_thread);
470 Thread::start(listener_thread);
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392 }
393 }
394
395 bool AttachListener::has_init_error(TRAPS) {
396 if (HAS_PENDING_EXCEPTION) {
397 tty->print_cr("Exception in VM (AttachListener::init) : ");
398 java_lang_Throwable::print(PENDING_EXCEPTION, tty);
399 tty->cr();
400
401 CLEAR_PENDING_EXCEPTION;
402
403 return true;
404 } else {
405 return false;
406 }
407 }
408
409 // Starts the Attach Listener thread
410 void AttachListener::init() {
411 EXCEPTION_MARK;
412
413 const char thread_name[] = "Attach Listener";
414 Handle string = java_lang_String::create_from_str(thread_name, THREAD);
415 if (has_init_error(THREAD)) {
416 return;
417 }
418
419 // Initialize thread_oop to put it into the system threadGroup
420 Handle thread_group (THREAD, Universe::system_thread_group());
421 Handle thread_oop = JavaCalls::construct_new_instance(SystemDictionary::Thread_klass(),
422 vmSymbols::threadgroup_string_void_signature(),
423 thread_group,
424 string,
425 THREAD);
426 if (has_init_error(THREAD)) {
427 return;
428 }
429
430 Klass* group = SystemDictionary::ThreadGroup_klass();
431 JavaValue result(T_VOID);
432 JavaCalls::call_special(&result,
433 thread_group,
434 group,
435 vmSymbols::add_method_name(),
436 vmSymbols::thread_void_signature(),
437 thread_oop,
438 THREAD);
439 if (has_init_error(THREAD)) {
440 return;
441 }
442
443 { MutexLocker mu(Threads_lock);
444 JavaThread* listener_thread = new JavaThread(&attach_listener_thread_entry);
445
446 // Check that thread and osthread were created
447 if (listener_thread == NULL || listener_thread->osthread() == NULL) {
448 vm_exit_during_initialization("java.lang.OutOfMemoryError",
449 os::native_thread_creation_failed_msg());
450 }
451
452 java_lang_Thread::set_thread(thread_oop(), listener_thread);
453 java_lang_Thread::set_daemon(thread_oop());
454
455 listener_thread->set_threadObj(thread_oop());
456 Threads::add(listener_thread);
457 Thread::start(listener_thread);
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