| IAsyncReadFileHandle::ReadRequest()
|
Module |
|
Header |
/Engine/Source/Runtime/Core/Public/HAL/IPlatformFileOpenLogWrapper.h |
Include |
#include "HAL/IPlatformFileOpenLogWrapper.h" |
Source |
/Engine/Source/Runtime/Core/Private/HAL/IPlatformFileOpenLogWrapper.cpp |
virtual IAsyncReadRequest * ReadRequest
(
int64 Offset,
int64 BytesToRead,
EAsyncIOPriorityAndFlags PriorityAndFlags,
FAsyncFileCallBack * CompleteCallback,
uint8 * UserSuppliedMemory
)
Submit an async request and/or wait for an async request
A request for the read. This is owned by the caller and must be deleted by the caller.
Parameter |
Description |
---|---|
Offset |
Offset into the file to start reading. |
BytesToRead |
number of bytes to read. If this request is AIOP_Preache, the size can be anything, even MAX_int64, otherwise the size and offset must be fully contained in the file. |
PriorityAndFlags |
Priority and flags of the request. If this includes AIOP_FLAG_PRECACHE, then memory will never be returned. The request should always be canceled and waited for, even for a precache request. |
CompleteCallback |
Called from an arbitrary thread when the request is complete. Can be nullptr, if non-null, must remain valid until it is called. It will always be called. |