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  3. IFileCacheHandle

IFileCacheHandle

All methods may be safely called from multiple threads simultaneously, unless otherwise noted

API > API/Runtime > API/Runtime/Core

All methods may be safely called from multiple threads simultaneously, unless otherwise noted

Also note, if you create several IFileCacheHandle's to the same file on separate threads these will be considered as individual separate files from the cache point of view and thus each will have their own cache data allocated.

   
Name IFileCacheHandle
Type class
Header File /Engine/Source/Runtime/Core/Public/FileCache/FileCache.h
Include Path #include "FileCache/FileCache.h"

Syntax

class IFileCacheHandle

Destructors

Name Remarks Include Path Unreal Specifiers

virtual ~IFileCacheHandle()

   FileCache/FileCache.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

FGraphEventRef PreloadData ( const FFileCachePreloadEntry* PreloadEntries,
int32 NumEntries,
EAsyncIOPriorityAndFlags Priority
)

   FileCache/FileCache.h  

IMemoryReadStreamRef ReadData ( FGraphEventArray& OutCompletionEvents,
int64 Offset,
int64 BytesToRead,
EAsyncIOPriorityAndFlags Priority
)

 Read a byte range form the file. FileCache/FileCache.h  

void WaitAll()

 Wait until all outstanding read requests complete. FileCache/FileCache.h  

Static

Name Remarks Include Path Unreal Specifiers

static IFileCacheHandle * CreateFileCacheHandle ( const TCHAR* InFileName,
int64 InBaseOffset
)

 Create a IFileCacheHandle from a filename. FileCache/FileCache.h  

static IFileCacheHandle * CreateFileCacheHandle ( IAsyncReadFileHandle* FileHandle,
int64 InBaseOffset
)

 Create a IFileCacheHandle from a IAsyncReadFileHandle. FileCache/FileCache.h  

static void EvictAll()

   FileCache/FileCache.h  

static int64 GetFileCacheSize()

 Return size of underlying file cache in bytes. FileCache/FileCache.h  

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