Class FlaxStorage

Flax assets storage container.

Object
FlaxStorage
Assembly: FlaxEngine.dll
File: Engine/Content/Storage/FlaxStorage.h
Syntax
public class FlaxStorage : public Object

Constructors

~FlaxStorage()

Finalizes an instance of the FlaxStorage class.

Declaration
public virtual ~FlaxStorage()

FlaxStorage(const StringView& path)

Declaration
protected FlaxStorage(const StringView& path)
Parameters
StringView path

Fields

_chunks

Declaration
protected Array<FlaxChunk* > _chunks
Field Value
Array<FlaxChunk >

_chunksLock

Declaration
protected int64 _chunksLock = 0
Field Value
int64

_file

Declaration
protected ThreadLocal<FileReadStream* > _file
Field Value
ThreadLocal<FileReadStream >

_files

Declaration
protected int64 _files = 0
Field Value
int64

_lastRefLostTime

Declaration
protected double _lastRefLostTime
Field Value
double

_loadLocker

Declaration
protected CriticalSection _loadLocker
Field Value
CriticalSection

_path

Declaration
protected String _path
Field Value
String

_refCount

Declaration
protected int64 _refCount = 0
Field Value
int64

_version

Declaration
protected uint32 _version = 0
Field Value
uint32

MagicCode

Magic code stored in file header to identify contents.

Declaration
public static int32 MagicCode
Field Value
int32

OnReloaded

Action fired on storage reloading. bool param means 'wasReloadFail'

Declaration
public Delegate<FlaxStorage* , bool> OnReloaded
Field Value
Delegate<FlaxStorage , bool>

OnReloading

Action fired on storage reloading.

Declaration
public Delegate<FlaxStorage* > OnReloading
Field Value
Delegate<FlaxStorage >

Methods

AddChunk(FlaxChunk* chunk)

Declaration
protected void AddChunk(FlaxChunk* chunk)
Parameters
FlaxChunk chunk

AddEntry(Entry& e)

Declaration
protected virtual void AddEntry(Entry& e) = 0
Parameters
Entry e

AllocateChunk()

Allocates the new chunk within a storage container (if it's possible).

Declaration
public FlaxChunk* AllocateChunk()
Returns
FlaxChunk

Allocated chunk or null if cannot.

AllowDataModifications()

Checks whenever storage container allows the data modifications.

Declaration
public virtual bool AllowDataModifications() const = 0
Returns
bool

ChangeAssetID(Entry& e, const Guid& newId)

Changes the asset identifier. Warning! Changes only ID in storage layer, not dependencies resolving at all!

Declaration
public bool ChangeAssetID(Entry& e, const Guid& newId)
Parameters
Entry e

The asset entry.
Guid newId

The new identifier.
Returns
bool

True if cannot change data, otherwise false

CloseFileHandles()

Closes the file handles (it can be modified from the outside).

Declaration
public bool CloseFileHandles()
Returns
bool

Create(const StringView& path, const Array<AssetInitData>& assets, bool silentMode=false, const CustomData* customData=nullptr)

Creates new FlaxFile using specified assets data.

Declaration
public static bool Create(const StringView& path, const Array<AssetInitData>& assets, bool silentMode=false, const CustomData* customData=nullptr)
Parameters
StringView path

The file path.
Array<AssetInitData> assets

The assets data to write.
bool silentMode

In silent mode don't reload opened storage container that is using target file.
CustomData customData

Custom options.
Returns
bool

True if cannot create package, otherwise false

Create(const StringView& path, const AssetInitData& asset, bool silentMode=false, const CustomData* customData=nullptr)

Creates new FlaxFile using specified asset data.

Declaration
public static bool Create(const StringView& path, const AssetInitData& asset, bool silentMode=false, const CustomData* customData=nullptr)
Parameters
StringView path

The file path.
AssetInitData asset

The asset data to write.
bool silentMode

In silent mode don't reload opened storage container that is using target file.
CustomData customData

Custom options.
Returns
bool

True if cannot create package, otherwise false

Create(const StringView& path, Span<AssetInitData> assets, bool silentMode=false, const CustomData* customData=nullptr)

Creates new FlaxFile using specified assets data.

Declaration
public static bool Create(const StringView& path, Span<AssetInitData> assets, bool silentMode=false, const CustomData* customData=nullptr)
Parameters
StringView path

The file path.
Span<AssetInitData> assets

The assets data to write.
bool silentMode

In silent mode don't reload opened storage container that is using target file.
CustomData customData

Custom options.
Returns
bool

True if cannot create package, otherwise false

Create(WriteStream* stream, Span<AssetInitData> assets, const CustomData* customData=nullptr)

Creates new FlaxFile using specified assets data.

Declaration
public static bool Create(WriteStream* stream, Span<AssetInitData> assets, const CustomData* customData=nullptr)
Parameters
WriteStream stream

The output stream.
Span<AssetInitData> assets

The assets data to write.
CustomData customData

Custom options.
Returns
bool

True if cannot create package, otherwise false

Dispose()

Releases storage resources and closes handle to the file.

Declaration
public virtual void Dispose()

GetChunks(Array<FlaxChunk* >& output)

Gets all the chunks in the storage.

Declaration
public void GetChunks(Array<FlaxChunk* >& output) const
Parameters
Array<FlaxChunk > output

The output.
Returns
void

GetEntries(Array<Entry>& output)

Gets all the entries in the storage.

Declaration
public virtual void GetEntries(Array<Entry>& output) const = 0
Parameters
Array<Entry> output

The output.

GetEntriesCount()

Gets amount of entries in the storage.

Declaration
public virtual int32 GetEntriesCount() const = 0
Returns
int32

GetEntry(const Guid& id, Entry& e)

Declaration
protected virtual bool GetEntry(const Guid& id, Entry& e) = 0
Parameters
Guid id

Entry e

Returns
bool

GetEntry(int32 index)

Gets the asset entry at given index.

Declaration
public Entry GetEntry(int32 index) const
Parameters
int32 index

The asset index.
Returns
Entry

The output.

GetEntry(int32 index, Entry& value)

Gets the asset entry at given index.

Declaration
public virtual void GetEntry(int32 index, Entry& value) const = 0
Parameters
int32 index

The asset index.
Entry value

The result.

GetMemoryUsage()

Gets total memory used by chunks (in bytes).

Declaration
public uint32 GetMemoryUsage() const
Returns
uint32

GetPath()

Gets the path.

Declaration
public String GetPath() const
Returns
String

GetRefCount()

Gets the references count.

Declaration
public uint32 GetRefCount() const
Returns
uint32

HasAsset(const AssetInfo& info)

Determines whether the specified asset exists in this container.

Declaration
public virtual bool HasAsset(const AssetInfo& info) const = 0
Parameters
AssetInfo info

The asset info.
Returns
bool

True if the specified asset exists in this container, otherwise false.

HasAsset(const Guid& id)

Determines whether the specified asset exists in this container.

Declaration
public virtual bool HasAsset(const Guid& id) const = 0
Parameters
Guid id

The asset identifier.
Returns
bool

True if the specified asset exists in this container, otherwise false.

IsDisposed()

Determines whether this instance is disposed.

Declaration
public bool IsDisposed() const
Returns
bool

IsLoaded()

Determines whether this instance is loaded.

Declaration
public bool IsLoaded() const
Returns
bool

IsPackage()

Determines whether this storage container is a package.

Declaration
public virtual bool IsPackage() const = 0
Returns
bool

Load()

Loads package from the file.

Declaration
public bool Load()
Returns
bool

True if cannot load, otherwise false

LoadAssetChunk(FlaxChunk* chunk)

Loads the asset chunk.

Declaration
public bool LoadAssetChunk(FlaxChunk* chunk)
Parameters
FlaxChunk chunk

The chunk.
Returns
bool

True if cannot load data, otherwise false

LoadAssetHeader(const Entry& e, AssetInitData& data)

Declaration
protected bool LoadAssetHeader(const Entry& e, AssetInitData& data)
Parameters
Entry e

AssetInitData data

Returns
bool

LoadAssetHeader(const Guid& id, AssetInitData& data)

Loads the asset header.

Declaration
public bool LoadAssetHeader(const Guid& id, AssetInitData& data)
Parameters
Guid id

The asset identifier.
AssetInitData data

The data.
Returns
bool

True if cannot load data, otherwise false

LoadAssetHeader(const int32 index, AssetInitData& data)

Loads the asset header.

Declaration
public bool LoadAssetHeader(const int32 index, AssetInitData& data)
Parameters
int32 index

The asset index.
AssetInitData data

The data.
Returns
bool

True if cannot load data, otherwise false

Lock()

Locks the storage container chunks within a code block section (using a local variable that keeps a scope lock).

Declaration
public LockData Lock()
Returns
LockData

The scope lock.

LockChunks()

Locks the storage chunks data to prevent disposing them. Also ensures that file handles won't be closed while chunks are locked.

Declaration
public void LockChunks()
Returns
void

LockSafe()

Locks the storage container chunks within a code block section (using a local variable that keeps a scope lock).

Lock is done with a safe critical section for a ContentStorageManager that prevents to minor issues with threading. Should be used on a separate threads (eg. GameCooker thread).

Declaration
public LockData LockSafe()
Returns
LockData

The scope lock.

OnRename(const StringView& newPath)

Declaration
public void OnRename(const StringView& newPath)
Parameters
StringView newPath

OpenFile()

Declaration
protected FileReadStream* OpenFile()
Returns
FileReadStream

Reload()

Reloads this storage container.

Declaration
public bool Reload()
Returns
bool

True if cannot load, otherwise false

ReloadSilent()

Declaration
protected bool ReloadSilent()
Returns
bool

Save(const AssetInitData& data, bool silentMode=false)

Saves the specified asset data to the storage container.

Declaration
public bool Save(const AssetInitData& data, bool silentMode=false)
Parameters
AssetInitData data

The data to save.
bool silentMode

In silent mode don't reload opened storage container that is using target file.
Returns
bool

True if cannot save, otherwise false

SetEntry(int32 index, const Entry& value)

Sets the asset entry at given index.

Declaration
public virtual void SetEntry(int32 index, const Entry& value) = 0
Parameters
int32 index

The asset index.
Entry value

The input value.

ShouldDispose()

Checks if storage container should be disposed (it's not used anymore).

Declaration
public bool ShouldDispose() const
Returns
bool

Tick(double time)

Ticks this instance.

Declaration
public void Tick(double time)
Parameters
double time

UnlockChunks()

Unlocks the storage chunks data.

Declaration
public void UnlockChunks()
Returns
void