UE::IoStore::FCas Struct Reference

Public Types
using	FLookup = TMap< FCasAddr, FCasLocation >
using	FReadHandles = TMap< FCasBlockId, FWeakAsyncFileHandle >
using	FLastAccess = TMap< FCasBlockId, int64 >
using	FBlockIdHandleCounts = TMap< FCasBlockId, int32 >

Public Member Functions
	FCas (const FOnDemandInstallCacheConfig &Config)
void	Lock ()
void	Unlock ()
FResult	Initialize (FStringView Directory, bool bDeleteExisting=false)
FCasLocation	FindChunk (const FIoHash &Hash) const
FCasBlockId	CreateBlock ()
FResult	DeleteBlock (FCasBlockId BlockId, TArray< FCasAddr > &OutAddrs)
FString	GetBlockFilename (FCasBlockId BlockId) const
TResult< FSharedFileHandle >	OpenRead (FCasBlockId BlockId)
FSharedFileOpenAsyncResult	OpenAsyncRead (FCasBlockId BlockId)
void	OnFileHandleDeleted (FCasBlockId BlockId)
TResult< FUniqueFileHandle >	OpenWrite (FCasBlockId BlockId, bool bAppend) const
bool	TrackAccessIf (ECasTrackAccessType Type, FCasBlockId BlockId, int64 UtcTicks, bool bDirty)
bool	TrackAccessIf (ECasTrackAccessType Type, FCasBlockId BlockId, bool bDirty)
bool	UnlockedTrackAccessIf (ECasTrackAccessType Type, uint32 BlockIdHash, FCasBlockId BlockId, int64 UtcTicks, bool bDirty)
uint64	GetBlockInfo (FCasBlockInfoMap &OutBlockInfo)
void	Compact ()
FResult	Verify (TArray< FCasAddr > &OutAddrs)
void	LoadSnapshot (FCasSnapshot &&Snapshot)
FLastAccess	ConsumeLastAcccess ()
FCas::FLastAccess	GetAndClearDirtyLastAccess ()
FString	GetRootDirectory () const

Static Public Member Functions
static int64	GetTimestampForMissingLastAccess ()
static uint32	GetMaxBlockSize ()
static uint32	GetMinBlockSize ()

Public Attributes
FLookup	Lookup
FBlockIdHandleCounts	BlockIds

Static Public Attributes
static constexpr uint32	DeleteBlockMaxWaitTimeMs = 10000
static constexpr int64	DirtyTimestampMask = std::numeric_limits<int64>::lowest()

Member Typedef Documentation

FBlockIdHandleCounts

using UE::IoStore::FCas::FBlockIdHandleCounts = TMap<FCasBlockId, int32>

FLastAccess

using UE::IoStore::FCas::FLastAccess = TMap<FCasBlockId, int64>

FLookup

using UE::IoStore::FCas::FLookup = TMap<FCasAddr, FCasLocation>

FReadHandles

using UE::IoStore::FCas::FReadHandles = TMap<FCasBlockId, FWeakAsyncFileHandle>

Constructor & Destructor Documentation

FCas()

UE::IoStore::FCas::FCas

(

const FOnDemandInstallCacheConfig &

Config

)

Member Function Documentation

Compact()

void UE::IoStore::FCas::Compact

(

)

ConsumeLastAcccess()

FLastAccess UE::IoStore::FCas::ConsumeLastAcccess ( )

inline

CreateBlock()

FCasBlockId UE::IoStore::FCas::CreateBlock

(

)

DeleteBlock()

FResult UE::IoStore::FCas::DeleteBlock	(	FCasBlockId	BlockId,
		TArray< FCasAddr > &	OutAddrs
	)

FindChunk()

FCasLocation UE::IoStore::FCas::FindChunk

(

const FIoHash &

Hash

)

const

GetAndClearDirtyLastAccess()

FCas::FLastAccess UE::IoStore::FCas::GetAndClearDirtyLastAccess

(

)

GetBlockFilename()

FString UE::IoStore::FCas::GetBlockFilename

(

FCasBlockId

BlockId

)

const

GetBlockInfo()

uint64 UE::IoStore::FCas::GetBlockInfo

(

FCasBlockInfoMap &

OutBlockInfo

)

GetMaxBlockSize()

static uint32 UE::IoStore::FCas::GetMaxBlockSize ( )

inlinestatic

GetMinBlockSize()

static uint32 UE::IoStore::FCas::GetMinBlockSize ( )

inlinestatic

GetRootDirectory()

FString UE::IoStore::FCas::GetRootDirectory ( ) const

inline

GetTimestampForMissingLastAccess()

int64 UE::IoStore::FCas::GetTimestampForMissingLastAccess ( )

static

Initialize()

FResult UE::IoStore::FCas::Initialize	(	FStringView	Directory,
		bool	bDeleteExisting = false
	)

LoadSnapshot()

void UE::IoStore::FCas::LoadSnapshot

(

FCasSnapshot &&

Snapshot

)

Lock()

void UE::IoStore::FCas::Lock ( )

inline

OnFileHandleDeleted()

void UE::IoStore::FCas::OnFileHandleDeleted

(

FCasBlockId

BlockId

)

OpenAsyncRead()

FSharedFileOpenAsyncResult UE::IoStore::FCas::OpenAsyncRead

(

FCasBlockId

BlockId

)

OpenRead()

TResult< FSharedFileHandle > UE::IoStore::FCas::OpenRead

(

FCasBlockId

BlockId

)

OpenWrite()

TResult< FUniqueFileHandle > UE::IoStore::FCas::OpenWrite	(	FCasBlockId	BlockId,
		bool	bAppend
	)		const

TrackAccessIf() [1/2]

bool UE::IoStore::FCas::TrackAccessIf ( ECasTrackAccessType  Type, FCasBlockId  BlockId, bool  bDirty  )

inline

TrackAccessIf() [2/2]

bool UE::IoStore::FCas::TrackAccessIf	(	ECasTrackAccessType	Type,
		FCasBlockId	BlockId,
		int64	UtcTicks,
		bool	bDirty
	)

Unlock()

void UE::IoStore::FCas::Unlock ( )

inline

UnlockedTrackAccessIf()

bool UE::IoStore::FCas::UnlockedTrackAccessIf	(	ECasTrackAccessType	Type,
		uint32	BlockIdHash,
		FCasBlockId	BlockId,
		int64	UtcTicks,
		bool	bDirty
	)

Verify()

FResult UE::IoStore::FCas::Verify

(

TArray< FCasAddr > &

OutAddrs

)

Member Data Documentation

BlockIds

FBlockIdHandleCounts UE::IoStore::FCas::BlockIds

DeleteBlockMaxWaitTimeMs

constexpr uint32 UE::IoStore::FCas::DeleteBlockMaxWaitTimeMs = 10000

staticconstexpr

DirtyTimestampMask

constexpr int64 UE::IoStore::FCas::DirtyTimestampMask = std::numeric_limits<int64>::lowest()

staticconstexpr

Lookup

FLookup UE::IoStore::FCas::Lookup

---

The documentation for this struct was generated from the following file:

• Engine/Source/Runtime/Experimental/IoStore/OnDemand/Private/OnDemandInstallCache.cpp