513 } |
513 } |
514 |
514 |
515 void instanceRefKlass::acquire_pending_list_lock(BasicLock *pending_list_basic_lock) { |
515 void instanceRefKlass::acquire_pending_list_lock(BasicLock *pending_list_basic_lock) { |
516 // we may enter this with pending exception set |
516 // we may enter this with pending exception set |
517 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument |
517 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument |
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518 |
|
519 // Create a HandleMark in case we retry a GC multiple times. |
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520 // Each time we attempt the GC, we allocate the handle below |
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521 // to hold the pending list lock. We want to free this handle. |
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522 HandleMark hm; |
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523 |
518 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); |
524 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); |
519 ObjectSynchronizer::fast_enter(h_lock, pending_list_basic_lock, false, THREAD); |
525 ObjectSynchronizer::fast_enter(h_lock, pending_list_basic_lock, false, THREAD); |
520 assert(ObjectSynchronizer::current_thread_holds_lock( |
526 assert(ObjectSynchronizer::current_thread_holds_lock( |
521 JavaThread::current(), h_lock), |
527 JavaThread::current(), h_lock), |
522 "Locking should have succeeded"); |
528 "Locking should have succeeded"); |
525 |
531 |
526 void instanceRefKlass::release_and_notify_pending_list_lock( |
532 void instanceRefKlass::release_and_notify_pending_list_lock( |
527 BasicLock *pending_list_basic_lock) { |
533 BasicLock *pending_list_basic_lock) { |
528 // we may enter this with pending exception set |
534 // we may enter this with pending exception set |
529 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument |
535 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument |
530 // |
536 |
|
537 // Create a HandleMark in case we retry a GC multiple times. |
|
538 // Each time we attempt the GC, we allocate the handle below |
|
539 // to hold the pending list lock. We want to free this handle. |
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540 HandleMark hm; |
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541 |
531 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); |
542 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); |
532 assert(ObjectSynchronizer::current_thread_holds_lock( |
543 assert(ObjectSynchronizer::current_thread_holds_lock( |
533 JavaThread::current(), h_lock), |
544 JavaThread::current(), h_lock), |
534 "Lock should be held"); |
545 "Lock should be held"); |
535 // Notify waiters on pending lists lock if there is any reference. |
546 // Notify waiters on pending lists lock if there is any reference. |