598 pool->pool_holder()
599 );
600 }
601
602
603 //------------------------------------------------------------------------------------------------------------------------
604 // Synchronization
605 //
606 // The interpreter's synchronization code is factored out so that it can
607 // be shared by method invocation and synchronized blocks.
608 //%note synchronization_3
609
610 //%note monitor_1
611 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem))
612 #ifdef ASSERT
613 thread->last_frame().interpreter_frame_verify_monitor(elem);
614 #endif
615 if (PrintBiasedLockingStatistics) {
616 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
617 }
618 Handle h_obj(thread, elem->obj());
619 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
620 "must be NULL or an object");
621 if (UseBiasedLocking) {
622 // Retry fast entry if bias is revoked to avoid unnecessary inflation
623 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK);
624 } else {
625 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK);
626 }
627 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()),
628 "must be NULL or an object");
629 #ifdef ASSERT
630 thread->last_frame().interpreter_frame_verify_monitor(elem);
631 #endif
632 IRT_END
633
634
635 //%note monitor_1
636 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem))
637 #ifdef ASSERT
638 thread->last_frame().interpreter_frame_verify_monitor(elem);
639 #endif
640 Handle h_obj(thread, elem->obj());
641 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
642 "must be NULL or an object");
643 if (elem == NULL || h_obj()->is_unlocked()) {
644 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
645 }
646 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread);
647 // Free entry. This must be done here, since a pending exception might be installed on
648 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again.
649 elem->set_obj(NULL);
650 #ifdef ASSERT
651 thread->last_frame().interpreter_frame_verify_monitor(elem);
652 #endif
653 IRT_END
654
655
656 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread))
657 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
658 IRT_END
659
660
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598 pool->pool_holder()
599 );
600 }
601
602
603 //------------------------------------------------------------------------------------------------------------------------
604 // Synchronization
605 //
606 // The interpreter's synchronization code is factored out so that it can
607 // be shared by method invocation and synchronized blocks.
608 //%note synchronization_3
609
610 //%note monitor_1
611 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem))
612 #ifdef ASSERT
613 thread->last_frame().interpreter_frame_verify_monitor(elem);
614 #endif
615 if (PrintBiasedLockingStatistics) {
616 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
617 }
618 Handle h_obj(thread, oopDesc::bs()->write_barrier(elem->obj()));
619 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
620 "must be NULL or an object");
621 if (UseBiasedLocking) {
622 // Retry fast entry if bias is revoked to avoid unnecessary inflation
623 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK);
624 } else {
625 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK);
626 }
627 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()),
628 "must be NULL or an object");
629 #ifdef ASSERT
630 thread->last_frame().interpreter_frame_verify_monitor(elem);
631 #endif
632 IRT_END
633
634
635 //%note monitor_1
636 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem))
637 #ifdef ASSERT
638 thread->last_frame().interpreter_frame_verify_monitor(elem);
639 #endif
640 Handle h_obj(thread, oopDesc::bs()->write_barrier(elem->obj()));
641 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
642 "must be NULL or an object");
643 if (elem == NULL || h_obj()->is_unlocked()) {
644 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
645 }
646 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread);
647 // Free entry. This must be done here, since a pending exception might be installed on
648 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again.
649 elem->set_obj(NULL);
650 #ifdef ASSERT
651 thread->last_frame().interpreter_frame_verify_monitor(elem);
652 #endif
653 IRT_END
654
655
656 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread))
657 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
658 IRT_END
659
660
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