- h -

• HAllocationMode() : BASE_EMBEDDED< Visitor >
• Handle() : Handle< T >
• handle() : GlobalHandles::Node
• Handle() : Handle< T >
• handle() : HeapTypeConfig , V8_FINAL< kOperandKind, kNumCachedOperands > , ZoneTypeConfig
• handle_scope_data() : Isolate
• handle_scope_implementer() : Isolate
• handle_scope_level_address() : BASE_EMBEDDED< Visitor >
• handle_scope_limit_address() : BASE_EMBEDDED< Visitor >
• handle_scope_next_address() : BASE_EMBEDDED< Visitor >
• HandleArray() : HandleArray
• HandleEvent() : Logger
• HandleGet() : DeclarationContext
• HandleQuery() : DeclarationContext
• handler() : BASE_EMBEDDED< Visitor > , Isolate
• handler_address() : Isolate
• handler_count() : ParserBase< Traits >::BASE_EMBEDDED , V8_FINAL< kOperandKind, kNumCachedOperands >
• HandlerFrontend() : BaseLoadStoreStubCompiler
• HandlerFrontendFooter() : BaseLoadStoreStubCompiler , LoadStubCompiler , StoreStubCompiler
• HandlerFrontendHeader() : BaseLoadStoreStubCompiler , LoadStubCompiler , StoreStubCompiler
• HandlerResult() : BASE_EMBEDDED< Visitor >
• HandlerStub() : HandlerStub
• HandleScope() : HandleScope
• HandleScopeImplementer() : HandleScopeImplementer
• HandleSet() : DeclarationContext
• HandleSideEffectDominator() : HValue , V8_FINAL< kOperandKind, kNumCachedOperands >
• HandleStackGuardInterrupt() : Execution
• HArithmeticBinaryOperation() : HArithmeticBinaryOperation
• HarmonyModules() : Scanner
• HarmonyNumericLiterals() : Scanner
• HarmonyScoping() : Scanner
• Has() : Object
• has_adapted_arguments() : JavaScriptFrame
• has_alignment_padding_offset() : Deoptimizer
• has_been_disposed() : TestRetainedObjectInfo
• has_check() : BASE_EMBEDDED< Visitor >::Element
• has_cmov() : BASE_EMBEDDED< Visitor >
• has_code_cache() : Map
• has_constant_parameter_count() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_debug_break_slots() : Code
• has_deoptimization_support() : Code , SharedFunctionInfo
• has_dictionary_elements() : Map
• has_doubles() : BASE_EMBEDDED< Visitor >
• has_duplicate_parameters() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_error() : ScriptDataImpl , SingletonLogger
• has_exception() : Assembler
• has_extension() : Context
• has_external_array_elements() : Map
• has_failed() : Analysis
• has_fast_double_elements() : Map
• has_fast_elements() : Map
• has_fast_object_elements() : Map
• has_fast_smi_elements() : Map
• has_fast_smi_or_object_elements() : Map
• has_fixed_typed_array_elements() : Map
• has_forced_context_allocation() : Scope , Variable
• has_fpu() : BASE_EMBEDDED< Visitor >
• has_frame() : MacroAssembler
• has_function() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_function_cache() : Code
• has_global_object() : CompilationInfo
• has_idiva() : BASE_EMBEDDED< Visitor >
• has_indexed_interceptor() : Map
• has_initial_map() : JSFunction
• has_installed_extensions() : Isolate
• has_instance_call_handler() : Map
• has_instance_prototype() : JSFunction
• has_major_key() : Code
• has_migration_target() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_miss_handler() : CodeStubInterfaceDescriptor
• has_mmx() : BASE_EMBEDDED< Visitor >
• has_more() : VectorIterator< T >
• has_name_prefix() : CodeEntry
• has_named_interceptor() : Map
• has_neon() : BASE_EMBEDDED< Visitor >
• has_next() : BASE_EMBEDDED< Visitor > , SpaceIterator
• has_no_literals() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_non_instance_prototype() : Map
• has_osr() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_pending_exception() : Isolate
• has_pending_message_address() : Isolate
• has_position() : HInstruction
• has_prototype() : JSFunction
• has_sahf() : BASE_EMBEDDED< Visitor >
• has_scheduled_exception() : Isolate
• has_sloppy_arguments_elements() : Map
• has_slow_elements_kind() : Map
• has_sse() : BASE_EMBEDDED< Visitor >
• has_sse2() : BASE_EMBEDDED< Visitor >
• has_sse3() : BASE_EMBEDDED< Visitor >
• has_sse41() : BASE_EMBEDDED< Visitor >
• has_sse42() : BASE_EMBEDDED< Visitor >
• has_ssse3() : BASE_EMBEDDED< Visitor >
• has_thumbee() : BASE_EMBEDDED< Visitor >
• has_transition() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_trivial_hash() : StringHasher
• has_uint32_instructions() : V8_FINAL< kOperandKind, kNumCachedOperands >
• has_vfp() : BASE_EMBEDDED< Visitor >
• has_vfp3() : BASE_EMBEDDED< Visitor >
• has_vfp3_d32() : BASE_EMBEDDED< Visitor >
• has_wrapper_class_id() : GlobalHandles::Node
• HasAbortedDueToDependencyChange() : CompilationInfo
• HasAllocatedSpillOperand() : LiveRange
• HasAnyLineTerminatorBeforeNext() : Scanner
• HasAnyPolicy() : LUnallocated
• HasArgumentsParameter() : Scope
• HasAssignedIndexAt() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasAstId() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasAtLeastOneUseWithFlagAndNoneWithout() : HValue
• HasB() : Instruction
• HasBeenRegistered() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasBeenSetUp() : Heap , NewSpace , PagedSpace , SemiSpace
• HasBooleanValue() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasBuiltinFunctionId() : SharedFunctionInfo
• HasCallFeedbackSlot() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasCapacity() : FixedArrayBuilder
• HasCaught() : TryCatch
• hasCodeEventListener() : Logger
• HasColor() : MacroAssembler
• HasContext() : ScopeInfo
• HasCounterFunction() : StatsTable
• HasDeoptimizationSupport() : CompilationInfo
• HasDependency() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasDictionaryArgumentsElements() : JSObject
• HasDictionaryElements() : JSObject
• HasDoubleRegisterInput() : LInstruction
• HasDoubleRegisterResult() : LInstruction
• HasDoubleValue() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasElement() : ElementsAccessor , ElementsAccessorBase< ElementsAccessorSubclass, ElementsTraitsParam > , JSReceiver
• HasElementImpl() : DictionaryElementsAccessor , ElementsAccessorBase< ElementsAccessorSubclass, ElementsTraitsParam > , FastElementsAccessor< FastElementsAccessorSubclass, KindTraits, ElementSize > , SloppyArgumentsElementsAccessor , TypedElementsAccessor< Kind >
• HasElementsTransition() : Map , TransitionArray
• HasElseStatement() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasEnumCache() : DescriptorArray
• HasEnumIndicesCache() : DescriptorArray
• HasEnvironment() : LInstruction , V8_FINAL< kOperandKind, kNumCachedOperands >
• HasError() : ScriptDataImpl , ScriptData
• HasEscapingOperandAt() : HDematerializedObject , HValue , V8_FINAL< kOperandKind, kNumCachedOperands >
• HasExpired() : BASE_EMBEDDED< Visitor >
• HasExternalArrayElements() : JSObject
• HasExternalFloat32Elements() : JSObject
• HasExternalFloat64Elements() : JSObject
• HasExternalInt16Elements() : JSObject
• HasExternalInt32Elements() : JSObject
• HasExternalInt8Elements() : JSObject
• HasExternalReferenceValue() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasExternalUint16Elements() : JSObject
• HasExternalUint32Elements() : JSObject
• HasExternalUint8ClampedElements() : JSObject
• HasExternalUint8Elements() : JSObject
• HasFastArgumentsElements() : JSObject
• HasFastDoubleElements() : JSObject
• HasFastElements() : JSObject
• HasFastHoleyElements() : JSObject
• HasFastObjectElements() : JSObject
• HasFastProperties() : JSObject
• HasFastSmiElements() : JSObject
• HasFastSmiOrObjectElements() : JSObject
• HasFixedArrayElements() : JSObject
• HasFixedDoubleRegisterPolicy() : LUnallocated
• HasFixedFloat32Elements() : JSObject
• HasFixedFloat64Elements() : JSObject
• HasFixedInt16Elements() : JSObject
• HasFixedInt32Elements() : JSObject
• HasFixedInt8Elements() : JSObject
• HasFixedPolicy() : LUnallocated
• HasFixedRegisterPolicy() : LUnallocated
• HasFixedSlotPolicy() : LUnallocated
• HasFixedTypedArrayElements() : JSObject
• HasFixedUint16Elements() : JSObject
• HasFixedUint32Elements() : JSObject
• HasFixedUint8ClampedElements() : JSObject
• HasFixedUint8Elements() : JSObject
• HasFunctionName() : ScopeInfo
• Hash() : BaseShape< Key > , BoundsCheckKey , CodeCacheHashTableKey , CodeCacheHashTableShape , CompilationCacheShape , HashTable< Shape, Key > , HashTableKey
• HasH() : Instruction
• Hash() : InternalizedStringKey , IteratingStringHasher , Map , MapCacheShape , Name , NameDictionaryShape , ObjectHashTableShape< entrysize > , PolymorphicCodeCacheHashTableKey , RegExpKey , SequentialStringKey< Char > , StringKey , StringSharedKey , StringsKey , StringTableShape , SubStringKey< Char > , TwoCharHashTableKey , UnseededNumberDictionaryShape , Utf8StringKey , V8_FINAL< kOperandKind, kNumCachedOperands > , WeakHashTableShape< entrysize >
• hash_field() : Name
• HasHandler() : BASE_EMBEDDED< Visitor >
• HasHashCode() : Name
• Hashcode() : HValue , V8_FINAL< kOperandKind, kNumCachedOperands >
• HasHeapAllocatedLocals() : ScopeInfo
• HasHeapObjectTag() : Internals
• HashForObject() : BaseShape< Key > , CodeCacheHashTableKey , CodeCacheHashTableShape , CompilationCacheShape , HashTable< Shape, Key > , HashTableKey , InternalizedStringKey , MapCacheShape , NameDictionaryShape , ObjectHashTableShape< entrysize > , PolymorphicCodeCacheHashTableKey , RegExpKey , SequentialStringKey< Char > , StringKey , StringSharedKey , StringsKey , StringTableShape , SubStringKey< Char > , TwoCharHashTableKey , UnseededNumberDictionaryShape , Utf8StringKey , WeakHashTableShape< entrysize >
• HasHiddenProperties() : JSObject
• HasHint() : UsePosition
• HashSeed() : Heap
• HashSequentialString() : StringHasher
• HasIllegalRedeclaration() : Scope
• HasIndexedInterceptor() : JSObject
• HasIndexedLookupInterceptor() : Object
• HasIndexedPropertiesInExternalArrayData() : Object
• HasIndexedPropertiesInPixelData() : Object
• HasInstance() : FunctionTemplate
• HasInteger32Value() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasInterestingComment() : LInstruction , V8_FINAL< kOperandKind, kNumCachedOperands >
• HasInternalizedStringValue() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasL() : Instruction
• HasLazyCommits() : VirtualMemory
• HasLazyCompilableOuterContext() : Scope
• HasLink() : Instruction
• HasLocalElement() : JSReceiver
• HasLocalProperty() : JSReceiver
• HasLookbehind() : NodeInfo
• HasMagicNumberForDivision() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasMagicNumberForDivisor() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasMap() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasMergedIndex() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasMonomorphicJSObjectType() : HValue
• HasMore() : ConsStringIteratorOp , SnapshotByteSource , StringCharacterStream
• HasMultipleUses() : HValue
• HasNamedInterceptor() : JSObject
• HasNamedLookupInterceptor() : Object
• HasNext() : BASE_EMBEDDED< Visitor >
• HasNonSmiUse() : HValue
• HasNoTypeInformation() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasNoUses() : HValue
• HasNumberValue() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasObjectProperty() : Runtime
• HasObservableSideEffects() : HValue
• HasOnlyOneByteChars() : String
• HasOperand() : UsePosition
• HasOsrEntryAt() : HOsrBuilder
• HasOutOfBoundsAccess() : HValue , V8_FINAL< kOperandKind, kNumCachedOperands >
• HasOutOfMemoryException() : Context
• HasOverflowed() : BASE_EMBEDDED< Visitor >
• HasOwnProperty() : Object
• HasParentLoopHeader() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasPointerMap() : LInstruction
• HasPredecessor() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasPrivate() : Object
• HasProperty() : JSReceiver
• HasPrototypeTransitions() : Map , TransitionArray
• HasRange() : HValue
• HasRealElementProperty() : JSObject
• HasRealIndexedProperty() : Object
• HasRealNamedCallbackProperty() : JSObject , Object
• HasRealNamedProperty() : JSObject , Object
• HasRealUses() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasRegisterAssigned() : LiveRange
• HasRegisterAt() : BASE_EMBEDDED< Visitor >
• HasRegisterPolicy() : LUnallocated
• HasRegisters() : BASE_EMBEDDED< Visitor >
• HasReplacement() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasResult() : LInstruction , LTemplateResultInstruction< R >
• HasS() : Instruction
• HasSameAsInputPolicy() : LUnallocated
• HasSameOsrEntry() : CompilationInfo
• HasSavedContexts() : HandleScopeImplementer
• HasSideEffects() : BinaryOpIC::BASE_EMBEDDED , HValue
• HasSign() : Instruction
• HasSingleCheck() : BoundsCheckBbData
• HasSloppyArgumentsElements() : JSObject
• HasSmiCheck() : InlineSmiCheckInfo
• HasSmiValue() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasSourceCode() : SharedFunctionInfo
• HasSpaceForTypedSlot() : SlotsBuffer
• HasSpecificClassOf() : Object
• HasStackCheck() : HInstruction , V8_FINAL< kOperandKind, kNumCachedOperands >
• HasStringValue() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasTaggedValue() : BASE_EMBEDDED< Visitor >
• HasTaggedValueAt() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasTerminated() : TryCatch
• HasThenStatement() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasThreadLocal() : Thread
• HasTransitionArray() : Map
• HasTrivialContext() : Scope
• HasTrivialOuterContext() : Scope
• HasU() : Instruction
• HasUint32ValueAt() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HasUpperLimit() : V8_FINAL< kOperandKind, kNumCachedOperands >::InductionVariableCheck
• HasValidElements() : Object
• HasValidSource() : Script
• HasW() : Instruction
• HasWritableRegisterPolicy() : LUnallocated
• HaveASnapshotToStartFrom() : Snapshot
• HBasicBlock() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HBinaryCall() : HBinaryCall
• HBinaryOperation() : HBinaryOperation
• HBitwiseBinaryOperation() : HBitwiseBinaryOperation
• HBoundsCheckBaseIndexInformation() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HBoundsCheckEliminationPhase() : HBoundsCheckEliminationPhase
• HBoundsCheckHoistingPhase() : HBoundsCheckHoistingPhase
• HCall() : HCall< V >
• HCanonicalizePhase() : HCanonicalizePhase
• HCapturedObject() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HChange() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HCheckEliminationPhase() : HCheckEliminationPhase
• HCheckMapsEffects() : HCheckMapsEffects
• HCheckTable() : HCheckTable
• HComputeChangeUndefinedToNaN() : HComputeChangeUndefinedToNaN
• HDeadCodeEliminationPhase() : HDeadCodeEliminationPhase
• HDehoistIndexComputationsPhase() : HDehoistIndexComputationsPhase
• HDematerializedObject() : HDematerializedObject
• HDummyUse() : V8_FINAL< kOperandKind, kNumCachedOperands >
• header_index() : PropertyIndex
• heap() : CcTest , BASE_EMBEDDED< Visitor > , HeapObjectsMap , Isolate , MarkCompactCollector , MemoryChunk , Space , StubCache
• heap_always_allocate_scope_depth() : BASE_EMBEDDED< Visitor >
• heap_object_map() : HeapProfiler
• heap_profiler() : Isolate
• heap_size_limit() : HeapStatistics
• HeapEntriesMap() : HeapEntriesMap
• HeapEntry() : BASE_EMBEDDED< Visitor >
• HeapGraphEdge() : BASE_EMBEDDED< Visitor >
• HeapIterator() : BASE_EMBEDDED< Visitor >
• HeapNumber() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HeapNumberBooleanValue() : HeapNumber
• HeapNumberMaterializationDescriptor() : BASE_EMBEDDED< Visitor >
• HeapNumberPrint() : HeapNumber
• HeapObject() : Representation
• HeapObjectIterator() : HeapObjectIterator
• HeapObjectShortPrint() : HeapObject
• HeapObjectsMap() : HeapObjectsMap
• HeapObjectsSet() : HeapObjectsSet
• HeapObjectsTracker() : HeapObjectsTracker
• HeapProfiler() : HeapProfiler
• HeapSampleBeginEvent() : Logger
• HeapSampleEndEvent() : Logger
• HeapSampleItemEvent() : Logger
• HeapSampleJSConstructorEvent() : Logger
• HeapSampleJSProducerEvent() : Logger
• HeapSampleJSRetainersEvent() : Logger
• HeapSampleStats() : Logger
• HeapSnapshot() : HeapSnapshot
• HeapSnapshotGenerator() : HeapSnapshotGenerator
• HeapSnapshotJSONSerializer() : HeapSnapshotJSONSerializer
• HeapStatistics() : HeapStatistics
• HeapStatsUpdate() : HeapStatsUpdate
• HEnvironment() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HEnvironmentLivenessAnalysisPhase() : HEnvironmentLivenessAnalysisPhase
• HEscapeAnalysisPhase() : HEscapeAnalysisPhase
• HFlowEngine() : HFlowEngine< State, Effects >
• HGlobalValueNumberingPhase() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HGoto() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HGraph() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HGraphBuilder() : HGraphBuilder
• hi() : V8_FINAL< kOperandKind, kNumCachedOperands >
• hidden_string() : Factory , Heap
• HIfContinuation() : V8_FINAL< kOperandKind, kNumCachedOperands >
• high() : FPURegister , LowDwVfpRegister
• high_bit() : Register , XMMRegister
• HighOperand() : LCodeGen
• HighResolutionNow() : BASE_EMBEDDED< Visitor >
• HInferRepresentationPhase() : HInferRepresentationPhase
• HInferTypesPhase() : HInferTypesPhase
• HInstruction() : HInstruction
• HInstructionIterator() : BASE_EMBEDDED< Visitor >
• HInstructionMap() : V8_FINAL< kOperandKind, kNumCachedOperands >
• hint() : Assembler
• Hint() : MacroAssembler
• hint() : UsePosition
• HInvokeFunction() : V8_FINAL< kOperandKind, kNumCachedOperands >
• Histogram() : Histogram
• HistogramInfo() : HistogramInfo
• HistogramTimer() : HistogramTimer
• HistogramTimerScope() : BASE_EMBEDDED< Visitor >
• HLeaveInlined() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HLoadContextSlot() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HLoadEliminationEffects() : HLoadEliminationEffects
• HLoadEliminationPhase() : HLoadEliminationPhase
• HLoadEliminationTable() : HLoadEliminationTable
• HLoadFieldByIndex() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HLoopInformation() : V8_FINAL< kOperandKind, kNumCachedOperands >
• hlt() : Assembler
• Hlt() : MacroAssembler
• HMarkDeoptimizeOnUndefinedPhase() : HMarkDeoptimizeOnUndefinedPhase
• HMarkUnreachableBlocksPhase() : HMarkUnreachableBlocksPhase
• HMaterializedLiteral() : HMaterializedLiteral< V >
• HMergeRemovableSimulatesPhase() : HMergeRemovableSimulatesPhase
• Holder() : FunctionCallbackInfo< T >
• holder() : BASE_EMBEDDED< Visitor >
• Holder() : PropertyCallbackInfo< T >
• hole_mode() : V8_FINAL< kOperandKind, kNumCachedOperands >
• hole_nan_as_double() : FixedDoubleArray
• HOptimizedGraphBuilder() : HOptimizedGraphBuilder
• HOptimizedGraphBuilderWithPositions() : HOptimizedGraphBuilderWithPositions
• HOsrBuilder() : HOsrBuilder
• Host() : HttpRequest , StringHttpRequest
• host() : BASE_EMBEDDED< Visitor >
• host_index() : ModuleInfo
• HPhase() : HPhase
• HPhi() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HPositionInfo() : HPositionInfo
• HPredecessorIterator() : BASE_EMBEDDED< Visitor >
• HRangeAnalysisPhase() : HRangeAnalysisPhase
• HRedundantPhiEliminationPhase() : HRedundantPhiEliminationPhase
• HRepresentationChangesPhase() : HRepresentationChangesPhase
• HSideEffectMap() : BASE_EMBEDDED< Visitor >
• HSimulate() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HSourcePosition() : HSourcePosition
• HStackCheckEliminationPhase() : HStackCheckEliminationPhase
• HStatistics() : V8_FINAL< kOperandKind, kNumCachedOperands >
• HStoreEliminationPhase() : HStoreEliminationPhase
• HSuccessorIterator() : BASE_EMBEDDED< Visitor >
• HTemplateInstruction() : HTemplateInstruction< V >
• HTracer() : V8_FINAL< kOperandKind, kNumCachedOperands >
• huge_list() : FreeList
• HUint32AnalysisPhase() : HUint32AnalysisPhase
• HUnaryCall() : HUnaryCall
• HUnaryControlInstruction() : HUnaryControlInstruction
• HUnaryOperation() : HUnaryOperation
• Hurry() : IncrementalMarking
• HUseListNode() : HUseListNode
• HValue() : HValue , Instruction
• hydrogen_value() : LInstruction
• HydrogenCodeStub() : HydrogenCodeStub