668
669
670 JRT_LEAF(void, Runtime1::monitorexit(JavaThread* thread, BasicObjectLock* lock))
671 NOT_PRODUCT(_monitorexit_slowcase_cnt++;)
672 assert(thread == JavaThread::current(), "threads must correspond");
673 assert(thread->last_Java_sp(), "last_Java_sp must be set");
674 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
675 EXCEPTION_MARK;
676
677 oop obj = lock->obj();
678 assert(obj->is_oop(), "must be NULL or an object");
679 if (UseFastLocking) {
680 // When using fast locking, the compiled code has already tried the fast case
681 ObjectSynchronizer::slow_exit(obj, lock->lock(), THREAD);
682 } else {
683 ObjectSynchronizer::fast_exit(obj, lock->lock(), THREAD);
684 }
685 JRT_END
686
687 // Cf. OptoRuntime::deoptimize_caller_frame
688 JRT_ENTRY(void, Runtime1::deoptimize(JavaThread* thread))
689 // Called from within the owner thread, so no need for safepoint
690 RegisterMap reg_map(thread, false);
691 frame stub_frame = thread->last_frame();
692 assert(stub_frame.is_runtime_frame(), "sanity check");
693 frame caller_frame = stub_frame.sender(®_map);
694
695 // We are coming from a compiled method; check this is true.
696 assert(CodeCache::find_nmethod(caller_frame.pc()) != NULL, "sanity");
697
698 // Deoptimize the caller frame.
699 Deoptimization::deoptimize_frame(thread, caller_frame.id());
700
701 // Return to the now deoptimized frame.
702 JRT_END
703
704
705 static Klass* resolve_field_return_klass(methodHandle caller, int bci, TRAPS) {
706 Bytecode_field field_access(caller, bci);
707 // This can be static or non-static field access
708 Bytecodes::Code code = field_access.code();
709
710 // We must load class, initialize class and resolvethe field
711 fieldDescriptor result; // initialize class if needed
712 constantPoolHandle constants(THREAD, caller->constants());
713 LinkResolver::resolve_field_access(result, constants, field_access.index(), Bytecodes::java_code(code), CHECK_NULL);
714 return result.field_holder();
715 }
716
717
718 //
719 // This routine patches sites where a class wasn't loaded or
720 // initialized at the time the code was generated. It handles
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668
669
670 JRT_LEAF(void, Runtime1::monitorexit(JavaThread* thread, BasicObjectLock* lock))
671 NOT_PRODUCT(_monitorexit_slowcase_cnt++;)
672 assert(thread == JavaThread::current(), "threads must correspond");
673 assert(thread->last_Java_sp(), "last_Java_sp must be set");
674 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
675 EXCEPTION_MARK;
676
677 oop obj = lock->obj();
678 assert(obj->is_oop(), "must be NULL or an object");
679 if (UseFastLocking) {
680 // When using fast locking, the compiled code has already tried the fast case
681 ObjectSynchronizer::slow_exit(obj, lock->lock(), THREAD);
682 } else {
683 ObjectSynchronizer::fast_exit(obj, lock->lock(), THREAD);
684 }
685 JRT_END
686
687 // Cf. OptoRuntime::deoptimize_caller_frame
688 JRT_ENTRY(void, Runtime1::deoptimize(JavaThread* thread, jint trap_request))
689 // Called from within the owner thread, so no need for safepoint
690 RegisterMap reg_map(thread, false);
691 frame stub_frame = thread->last_frame();
692 assert(stub_frame.is_runtime_frame(), "sanity check");
693 frame caller_frame = stub_frame.sender(®_map);
694
695 // We are coming from a compiled method; check this is true.
696 assert(CodeCache::find_nmethod(caller_frame.pc()) != NULL, "sanity");
697 Deoptimization::DeoptAction action = Deoptimization::trap_request_action(trap_request);
698
699 if (action == Deoptimization::Action_make_not_entrant) {
700 nmethod* nm = CodeCache::find_nmethod(caller_frame.pc());
701 if (nm != NULL) {
702 nm->make_not_entrant();
703 }
704 }
705
706 // Deoptimize the caller frame.
707 Deoptimization::deoptimize_frame(thread, caller_frame.id());
708 // Return to the now deoptimized frame.
709 JRT_END
710
711
712 static Klass* resolve_field_return_klass(methodHandle caller, int bci, TRAPS) {
713 Bytecode_field field_access(caller, bci);
714 // This can be static or non-static field access
715 Bytecodes::Code code = field_access.code();
716
717 // We must load class, initialize class and resolvethe field
718 fieldDescriptor result; // initialize class if needed
719 constantPoolHandle constants(THREAD, caller->constants());
720 LinkResolver::resolve_field_access(result, constants, field_access.index(), Bytecodes::java_code(code), CHECK_NULL);
721 return result.field_holder();
722 }
723
724
725 //
726 // This routine patches sites where a class wasn't loaded or
727 // initialized at the time the code was generated. It handles
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