C++ UObject::IsPendingKill方法代码示例

void FObjectReplicator::PostReceivedBunch()
{
	if ( GetObject() == NULL )
	{
		UE_LOG(LogNet, Verbose, TEXT("PostReceivedBunch: Object == NULL"));
		return;
	}

	// Call PostNetReceive
	const bool bIsServer = (OwningChannel->Connection->Driver->ServerConnection == NULL);
	if (!bIsServer && bHasReplicatedProperties)
	{
		PostNetReceive();
		bHasReplicatedProperties = false;
	}

	// Check if PostNetReceive() destroyed Object
	UObject *Object = GetObject();
	if (Object == NULL || Object->IsPendingKill())
	{
		return;
	}

	// Call RepNotifies
	CallRepNotifies(true);

	if (!Object->IsPendingKill())
	{
		Object->PostRepNotifies();
	}
}

FExportObjectInnerContext::FExportObjectInnerContext(TArray<UObject*>& ObjsToIgnore)
{
	// For each object . . .
	for ( TObjectIterator<UObject> It ; It ; ++It )
	{
		UObject* InnerObj = *It;
		if ( !InnerObj->IsPendingKill() )
		{
			if ( !ObjsToIgnore.Contains(InnerObj) )
			{
				UObject* OuterObj = InnerObj->GetOuter();
				if ( OuterObj && !OuterObj->IsPendingKill() )
				{
					InnerList* Inners = ObjectToInnerMap.Find( OuterObj );
					if ( Inners )
					{
						// Add object to existing inner list.
						Inners->Add( InnerObj );
					}
					else
					{
						// Create a new inner list for the outer object.
						InnerList& InnersForOuterObject = ObjectToInnerMap.Add( OuterObj, InnerList() );
						InnersForOuterObject.Add( InnerObj );
					}
				}
			}
		}
	}
}

FExportObjectInnerContext::FExportObjectInnerContext(TArray<UObject*>& ObjsToIgnore)
{
    // For each object . . .
    for (UObject* InnerObj : TObjectRange<UObject>(RF_ClassDefaultObject | RF_PendingKill))
    {
        if (!ObjsToIgnore.Contains(InnerObj))
        {
            UObject* OuterObj = InnerObj->GetOuter();
            if (OuterObj && !OuterObj->IsPendingKill())
            {
                InnerList* Inners = ObjectToInnerMap.Find(OuterObj);
                if (Inners)
                {
                    // Add object to existing inner list.
                    Inners->Add(InnerObj);
                }
                else
                {
                    // Create a new inner list for the outer object.
                    InnerList& InnersForOuterObject = ObjectToInnerMap.Add(OuterObj, InnerList());
                    InnersForOuterObject.Add(InnerObj);
                }
            }
        }
    }
}

bool FFrontendFilter_InUseByLoadedLevels::PassesFilter(FAssetFilterType InItem) const
{
	bool bObjectInUse = false;
	
	if ( InItem.IsAssetLoaded() )
	{
		UObject* Asset = InItem.GetAsset();

		const bool bUnreferenced = !Asset->HasAnyMarks( OBJECTMARK_TagExp );
		const bool bIndirectlyReferencedObject = Asset->HasAnyMarks( OBJECTMARK_TagImp );
		const bool bRejectObject =
			Asset->GetOuter() == NULL || // Skip objects with null outers
			Asset->HasAnyFlags( RF_Transient ) || // Skip transient objects (these shouldn't show up in the CB anyway)
			Asset->IsPendingKill() || // Objects that will be garbage collected 
			bUnreferenced || // Unreferenced objects 
			bIndirectlyReferencedObject; // Indirectly referenced objects

		if( !bRejectObject && Asset->HasAnyFlags( RF_Public ) )
		{
			// The object is in use 
			bObjectInUse = true;
		}
	}

	return bObjectInUse;
}

void FGameplayCueHandler::ClearEffects(TArray< TSharedPtr<FGameplayCueViewEffects> > &Effects)
{
	bool RemovedSomething = false;
	for (TSharedPtr<FGameplayCueViewEffects> &EffectPtr : Effects)
	{
		if (!EffectPtr.IsValid())
		{
			continue;
		}

		FGameplayCueViewEffects &Effect = *EffectPtr.Get();

		if (Effect.SpawnedActor.IsValid())
		{
			Effect.SpawnedActor->Destroy();
			RemovedSomething = true;
		}

		if (Effect.AudioComponent.IsValid())
		{
			Effect.AudioComponent->Stop();
			RemovedSomething = true;
		}

		if (Effect.ParticleSystemComponent.IsValid())
		{
			Effect.ParticleSystemComponent->DestroyComponent();
			RemovedSomething = true;
		}
	}

	Effects.Empty();
	
	// Cleanup flat array
	if (RemovedSomething)
	{
		for (int32 idx=0; idx < SpawnedObjects.Num(); ++idx)
		{
			UObject *Obj = SpawnedObjects[idx];
			if (!Obj || Obj->IsPendingKill())
			{
				SpawnedObjects.RemoveAtSwap(idx);
				idx--;
			}
		}
	}
}

void FObjectReplicator::PostReceivedBunch()
{
	// Call PostNetReceive
	const bool bIsServer = (OwningChannel->Connection->Driver->ServerConnection == NULL);
	if (!bIsServer && bHasReplicatedProperties)
	{
		PostNetReceive();
		bHasReplicatedProperties = false;
	}

	// Check if PostNetReceive() destroyed Object
	UObject *Object = GetObject();
	if (Object == NULL || Object->IsPendingKill())
	{
		return;
	}

	RepLayout->CallRepNotifies( RepState, Object );

	// Call RepNotifies
	if ( RepNotifies.Num() > 0 )
	{
		for (int32 RepNotifyIdx = 0; RepNotifyIdx < RepNotifies.Num(); RepNotifyIdx++)
		{
			//UE_LOG(LogNet, Log,  TEXT("Calling Object->%s with %s"), *RepNotifies(RepNotifyIdx)->RepNotifyFunc.ToString(), *RepNotifies(RepNotifyIdx)->GetName()); 						
			UProperty* RepProperty = RepNotifies[RepNotifyIdx];
			UFunction* RepNotifyFunc = Object->FindFunctionChecked(RepProperty->RepNotifyFunc);
						
			if (RepNotifyFunc->NumParms == 0)
			{
				Object->ProcessEvent(RepNotifyFunc, NULL);
			}
			else if (RepNotifyFunc->NumParms == 1)
			{
				Object->ProcessEvent(RepNotifyFunc, RepProperty->ContainerPtrToValuePtr<uint8>(RepState->StaticBuffer.GetTypedData()) );
			}
			else if (RepNotifyFunc->NumParms == 2)
			{
				// Fixme: this isn't as safe as it could be. Right now we have two types of parameters: MetaData (a TArray<uint8>)
				// and the last local value (pointer into the Recent[] array).
				//
				// Arrays always expect MetaData. Everything else, including structs, expect last value.
				// This is enforced with UHT only. If a ::NetSerialize function ever starts producing a MetaData array thats not in UArrayProperty,
				// we have no static way of catching this and the replication system could pass the wrong thing into ProcessEvent here.
				//
				// But this is all sort of an edge case feature anyways, so its not worth tearing things up too much over.

				FMemMark Mark(FMemStack::Get());
				uint8* Parms = new(FMemStack::Get(),MEM_Zeroed,RepNotifyFunc->ParmsSize)uint8;
				
				TFieldIterator<UProperty> Itr(RepNotifyFunc);
				check(Itr);
				
				Itr->CopyCompleteValue( Itr->ContainerPtrToValuePtr<void>(Parms), RepProperty->ContainerPtrToValuePtr<uint8>(RepState->StaticBuffer.GetTypedData()) );
				++Itr;
				check(Itr);

				TArray<uint8> *NotifyMetaData = RepNotifyMetaData.Find(RepNotifies[RepNotifyIdx]);
				check(NotifyMetaData);
				Itr->CopyCompleteValue( Itr->ContainerPtrToValuePtr<void>(Parms), NotifyMetaData );
				
				Object->ProcessEvent(RepNotifyFunc, Parms );

				Mark.Pop();
			}
 						
 			if (Object == NULL || Object->IsPendingKill())
 			{
 				// script event destroyed Object
 				break;
 			}
		}
	}

	RepNotifies.Reset();
	RepNotifyMetaData.Empty();
}

//.........这里部分代码省略.........

			// Get the parameters.
			FMemMark Mark(FMemStack::Get());
			uint8* Parms = new(FMemStack::Get(),MEM_Zeroed,Function->ParmsSize)uint8;

			// Use the replication layout to receive the rpc parameter values
			TSharedPtr<FRepLayout> FuncRepLayout = OwningChannel->Connection->Driver->GetFunctionRepLayout( Function );

			FuncRepLayout->ReceivePropertiesForRPC( Object, Function, OwningChannel, Bunch, Parms );

			if ( Bunch.IsError() )
			{
				UE_LOG( LogNet, Error, TEXT( "ReceivedBunch: ReceivePropertiesForRPC - Bunch.IsError() == true: %s" ), *Object->GetFullName() );
				return false;
			}

			// validate that the function is callable here
			const bool bCanExecute = ( ( !bIsServer || RepFlags.bNetOwner ) );		// we are client or net owner

			if ( bCanExecute )
			{
				// Call the function.
				RPC_ResetLastFailedReason();

				Object->ProcessEvent( Function, Parms );

				if ( RPC_GetLastFailedReason() != NULL )
				{
					UE_LOG( LogNet, Error, TEXT( "ReceivedBunch: RPC_GetLastFailedReason: %s" ), RPC_GetLastFailedReason() );
					return false;
				}
			}
			else
			{
				UE_LOG( LogNet, Warning, TEXT( "Rejected unwanted function %s in %s" ), *Message.ToString(), *Object->GetFullName() );

				if ( !OwningChannel->Connection->TrackLogsPerSecond() )	// This will disconnect the client if we get her too often
				{
					return false;
				}
			}

			// Destroy the parameters.
			//warning: highly dependent on UObject::ProcessEvent freeing of parms!
			for ( UProperty * Destruct=Function->DestructorLink; Destruct; Destruct=Destruct->DestructorLinkNext )
			{
				if( Destruct->IsInContainer(Function->ParmsSize) )
				{
					Destruct->DestroyValue_InContainer(Parms);
				}
			}

			Mark.Pop();

			if ( Object == NULL || Object->IsPendingKill() )
			{
				// replicated function destroyed Object
				return true;		// FIXME: Should this return false to kick connection?  Seems we'll cause a read misalignment here if we don't
			}

			// Next.
			RepIndex = Bunch.ReadInt( ClassCache->GetMaxIndex() + 1 );

			if ( Bunch.IsError() )
			{
				UE_LOG( LogNet, Error, TEXT( "ReceivedBunch: Error reading bunch 2: %s" ), *Object->GetFullName() );
				return false;
			}

			if ( RepIndex > ClassCache->GetMaxIndex() )
			{
				UE_LOG( LogNet, Error, TEXT( "ReceivedBunch: RepIndex too large: %s" ), *Object->GetFullName() );
				return false;
			}

			if ( RepIndex == ClassCache->GetMaxIndex() )
			{
				// We're done
				FieldCache = NULL;
			}
			else
			{
				FieldCache = ClassCache->GetFromIndex( RepIndex );

				if ( FieldCache == NULL )
				{
					UE_LOG( LogNet, Error, TEXT( "ReceivedBunch: FieldCache == NULL: %s" ), *Object->GetFullName() );
					return false;
				}
			}
		}
		else if ( FieldCache )
		{
			UE_LOG( LogNet, Error, TEXT( "ReceivedBunch: Invalid replicated field %i in %s" ), RepIndex, *Object->GetFullName() );
			return false;
		}
	}

	return true;
}

void UExporter::ExportObjectInner(const FExportObjectInnerContext* Context, UObject* Object, FOutputDevice& Ar, uint32 PortFlags, bool bSkipComponents)
{
	// indent all the text in here
	TextIndent += 3;

	FExportObjectInnerContext::InnerList ObjectInners;
	if ( Context )
	{
		const FExportObjectInnerContext::InnerList* Inners = Context->ObjectToInnerMap.Find( Object );
		if ( Inners )
		{
			ObjectInners = *Inners;
		}
	}
	else
	{
		for (TObjectIterator<UObject> It; It; ++It)
		{
			if ( It->GetOuter() == Object )
			{
				ObjectInners.Add( *It );
			}
		}
	}


	TArray<UObject*> Components;
	if (!bSkipComponents)
	{
		// first export the components
		Object->CollectDefaultSubobjects(Components, false);
	}

	if (!(PortFlags & PPF_SeparateDefine))
	{
		for ( int32 ObjIndex = 0 ; ObjIndex < ObjectInners.Num() ; ++ObjIndex )
		{
			// NOTE: We ignore inner objects that have been tagged for death
			UObject* Obj = ObjectInners[ObjIndex];
			if ( !Obj->IsPendingKill() && !Obj->IsDefaultSubobject() && !Obj->HasAnyFlags(RF_TextExportTransient) && FCString::Stricmp(*Obj->GetClass()->GetName(), TEXT("Model")) != 0)
			{
				// export the object
				UExporter::ExportToOutputDevice( Context, Obj, NULL, Ar, (PortFlags & PPF_Copy) ? TEXT("Copy") : TEXT("T3D"), TextIndent, PortFlags | PPF_SeparateDeclare, false, ExportRootScope );
			}
		}

		if (!bSkipComponents)
		{
			ExportComponentDefinitions(Context, Components, Ar, PortFlags | PPF_SeparateDeclare);
		}
	}

	if (!(PortFlags & PPF_SeparateDeclare))
	{
		for ( int32 ObjIndex = 0 ; ObjIndex < ObjectInners.Num() ; ++ObjIndex )
		{
			// NOTE: We ignore inner objects that have been tagged for death
			UObject* Obj = ObjectInners[ObjIndex];
			if ( !Obj->IsPendingKill() && !Obj->IsDefaultSubobject() && !Obj->HasAnyFlags(RF_TextExportTransient) && FCString::Stricmp(*Obj->GetClass()->GetName(), TEXT("Model")) != 0)
			{
				// export the object
				UExporter::ExportToOutputDevice( Context, Obj, NULL, Ar, (PortFlags & PPF_Copy) ? TEXT("Copy") : TEXT("T3D"), TextIndent, PortFlags | PPF_SeparateDefine, false, ExportRootScope );

				// don't reexport below in ExportProperties
				Obj->Mark(OBJECTMARK_TagImp);
			}
		}

		if (!bSkipComponents)
		{
			ExportComponentDefinitions(Context, Components, Ar, PortFlags | PPF_SeparateDefine);
		}

		// export the object's properties
		// Note: we use archetype as the object to diff properties against before they exported. When object is created, they should create from archetype
		// and using this system, it should recover all properties it needs to copy
		uint8 *CompareObject;
		if (Object->HasAnyFlags(RF_ClassDefaultObject))
		{
			CompareObject = (uint8*)Object;
		}
		else
		{
			CompareObject = (uint8*)Object->GetArchetype();
		}
		ExportProperties( Context, Ar, Object->GetClass(), (uint8*)Object, TextIndent, Object->GetClass(), CompareObject, Object, PortFlags, ExportRootScope );

		if (!bSkipComponents)
		{
			// Export anything extra for the components. Used for instanced foliage.
			// This is done after the actor properties so these are set when regenerating the extra data objects.
			ExportComponentExtra( Context, Components, Ar, PortFlags );
		}
	}

	// remove indent
	TextIndent -= 3;
}

//.........这里部分代码省略.........
			UFunction * Function = Object->FindFunction( Message );

			if ( Function == NULL )
			{
				UE_LOG(LogNet, Error, TEXT("ReceivedBunch: Function == NULL: %s"), *Object->GetFullName());
				return false;
			}

			if ( ( Function->FunctionFlags & FUNC_Net ) == 0 )
			{
				UE_LOG(LogRep, Error, TEXT("Rejected non RPC function %s in %s"), *Message.ToString(), *Object->GetFullName());
				return false;
			}

			if ( ( Function->FunctionFlags & ( bIsServer ? FUNC_NetServer : ( FUNC_NetClient | FUNC_NetMulticast ) ) ) == 0 )
			{
				UE_LOG(LogRep, Error, TEXT("Rejected RPC function due to access rights %s in %s"), *Message.ToString(), *Object->GetFullName());
				return false;
			}

			UE_LOG(LogRepTraffic, Log, TEXT("      Received RPC: %s"), *Message.ToString());

			// Get the parameters.
			FMemMark Mark(FMemStack::Get());
			uint8* Parms = new(FMemStack::Get(),MEM_Zeroed,Function->ParmsSize)uint8;

			// Use the replication layout to receive the rpc parameter values
			TSharedPtr<FRepLayout> FuncRepLayout = OwningChannel->Connection->Driver->GetFunctionRepLayout( Function );

			FuncRepLayout->ReceivePropertiesForRPC( Object, Function, OwningChannel, Bunch, Parms );

			if ( Bunch.IsError() )
			{
				UE_LOG(LogRep, Error, TEXT("ReceivedBunch: ReceivePropertiesForRPC - Bunch.IsError() == true: Function: %s, Object: %s"), *Message.ToString(), *Object->GetFullName());
				return false;
			}

			// validate that the function is callable here
			const bool bCanExecute = ( !bIsServer || RepFlags.bNetOwner );		// we are client or net owner

			if ( bCanExecute )
			{
				// Call the function.
				RPC_ResetLastFailedReason();

				Object->ProcessEvent( Function, Parms );

				if ( RPC_GetLastFailedReason() != NULL )
				{
					UE_LOG(LogRep, Error, TEXT("ReceivedBunch: RPC_GetLastFailedReason: %s"), RPC_GetLastFailedReason());
					return false;
				}
			}
			else
			{
				UE_LOG(LogRep, Verbose, TEXT("Rejected unwanted function %s in %s"), *Message.ToString(), *Object->GetFullName());

				if ( !OwningChannel->Connection->TrackLogsPerSecond() )	// This will disconnect the client if we get here too often
				{
					UE_LOG(LogRep, Error, TEXT("Rejected too many unwanted functions %s in %s"), *Message.ToString(), *Object->GetFullName());
					return false;
				}
			}

			// Destroy the parameters.
			//warning: highly dependent on UObject::ProcessEvent freeing of parms!
			for ( UProperty * Destruct=Function->DestructorLink; Destruct; Destruct=Destruct->DestructorLinkNext )
			{
				if( Destruct->IsInContainer(Function->ParmsSize) )
				{
					Destruct->DestroyValue_InContainer(Parms);
				}
			}

			Mark.Pop();

			if ( Object == NULL || Object->IsPendingKill() )
			{
				// replicated function destroyed Object
				return true;		// FIXME: Should this return false to kick connection?  Seems we'll cause a read misalignment here if we don't
			}

			// Next.
			FieldCache = ReadField( ClassCache, Bunch );

			if ( Bunch.IsError() )
			{
				UE_LOG(LogNet, Error, TEXT("ReceivedBunch: Error reading field 3: %s"), *Object->GetFullName());
				return false;
			}
		}
		else if ( FieldCache )
		{
			UE_LOG(LogRep, Error, TEXT("ReceivedBunch: Invalid replicated field %i in %s"), FieldCache->FieldNetIndex, *Object->GetFullName());
			return false;
		}
	}

	return true;
}

void FObjectReplicator::UpdateUnmappedObjects( bool & bOutHasMoreUnmapped )
{
	UObject* Object = GetObject();

	if ( Object == NULL || Object->IsPendingKill() )
	{
		bOutHasMoreUnmapped = false;
		return;
	}

	if ( Connection->State == USOCK_Closed )
	{
		UE_LOG(LogNet, Warning, TEXT("FObjectReplicator::UpdateUnmappedObjects: Connection->State == USOCK_Closed"));
		return;
	}

	checkf( RepState->RepNotifies.Num() == 0, TEXT("Failed RepState RepNotifies check. Num=%d. Object=%s"), RepState->RepNotifies.Num(), *Object->GetFullName() );
	checkf( RepNotifies.Num() == 0, TEXT("Failed replicator RepNotifies check. Num=%d. Object=%s."), RepNotifies.Num(), *Object->GetFullName() );

	bool bSomeObjectsWereMapped = false;

	// Let the rep layout update any unmapped properties
	RepLayout->UpdateUnmappedObjects( RepState, Connection->PackageMap, Object, bSomeObjectsWereMapped, bOutHasMoreUnmapped );

	// Update unmapped objects for custom properties (currently just fast tarray)
	for ( auto It = UnmappedCustomProperties.CreateIterator(); It; ++It )
	{
		const int32			Offset			= It.Key();
		UStructProperty*	StructProperty	= It.Value();
		UScriptStruct*		InnerStruct		= StructProperty->Struct;

		check( InnerStruct->StructFlags & STRUCT_NetDeltaSerializeNative );

		UScriptStruct::ICppStructOps* CppStructOps = InnerStruct->GetCppStructOps();

		check( CppStructOps );
		check( !InnerStruct->InheritedCppStructOps() );

		FNetDeltaSerializeInfo Parms;

		FNetSerializeCB NetSerializeCB( OwningChannel->Connection->Driver );

		Parms.DebugName			= StructProperty->GetName();
		Parms.Struct			= InnerStruct;
		Parms.Map				= Connection->PackageMap;
		Parms.NetSerializeCB	= &NetSerializeCB;

		Parms.bUpdateUnmappedObjects	= true;
		Parms.bCalledPreNetReceive		= bSomeObjectsWereMapped;	// RepLayout used this to flag whether PreNetReceive was called
		Parms.Object					= Object;

		// Call the custom delta serialize function to handle it
		CppStructOps->NetDeltaSerialize( Parms, (uint8*)Object + Offset );

		// Merge in results
		bSomeObjectsWereMapped	|= Parms.bOutSomeObjectsWereMapped;
		bOutHasMoreUnmapped		|= Parms.bOutHasMoreUnmapped;

		if ( Parms.bOutSomeObjectsWereMapped )
		{
			// If we mapped a property, call the rep notify
			TArray<uint8> MetaData;
			QueuePropertyRepNotify( Object, StructProperty, 0, MetaData );
		}

		// If this property no longer has unmapped objects, we can stop checking it
		if ( !Parms.bOutHasMoreUnmapped )
		{
			It.RemoveCurrent();
		}
	}

	// Call any rep notifies that need to happen when object pointers change
	// Pass in false to override the check for queued bunches. Otherwise, if the owning channel has queued bunches,
	// the RepNotifies will remain in the list and the check for 0 RepNotifies above will fail next time.
	CallRepNotifies(false);

	if ( bSomeObjectsWereMapped )
	{
		// If we mapped some objects, make sure to call PostNetReceive (some game code will need to think this was actually replicated to work)
		PostNetReceive();
	}
}

void FMovieSceneSequenceInstance::PreUpdate(class IMovieScenePlayer& Player)
{
	// Remove any stale runtime objects
	TMap<FGuid, FMovieSceneObjectBindingInstance>::TIterator ObjectIt = ObjectBindingInstances.CreateIterator();
	for(; ObjectIt; ++ObjectIt )
	{
		FMovieSceneObjectBindingInstance& ObjectBindingInstance = ObjectIt.Value();
		for (int32 ObjectIndex = 0; ObjectIndex < ObjectBindingInstance.RuntimeObjects.Num(); )
		{
			UObject* RuntimeObject = ObjectBindingInstance.RuntimeObjects[ObjectIndex].Get();
			if (RuntimeObject == nullptr || RuntimeObject->HasAnyFlags(RF_BeginDestroyed|RF_FinishDestroyed) || RuntimeObject->IsPendingKill())
			{
				ObjectBindingInstance.RuntimeObjects.RemoveAt(ObjectIndex);
			}
			else
			{
				++ObjectIndex;
			}
		}
	}

	Player.GetSpawnRegister().PreUpdateSequenceInstance(*this, Player);
}