145 lines
4.3 KiB
C++
145 lines
4.3 KiB
C++
/***
|
|
Copyright (C) 2023 J Reece Wilson (a/k/a "Reece"). All rights reserved.
|
|
|
|
File: IOHandle.hpp
|
|
Date: 2023-7-28
|
|
Author: Reece
|
|
***/
|
|
#pragma once
|
|
|
|
#include "FS/EFileAdvisoryLockLevel.hpp"
|
|
#include "FS/EFileOpenMode.hpp"
|
|
|
|
namespace Aurora::IO
|
|
{
|
|
// Note: A handle is never disposable to prevent IO fd use after close
|
|
// You must ensure RAII and/or shared ownership release to dispose of the IO handle.
|
|
// This class is only intended to be an handle view; therefore, it is not possible to close the handle.
|
|
struct IIOHandle
|
|
{
|
|
struct HandleCreate
|
|
{
|
|
/**
|
|
* "Create"
|
|
*/
|
|
bool bFailIfNonEmptyFile {};
|
|
|
|
/**
|
|
* Lock level
|
|
*/
|
|
FS::EFileAdvisoryLockLevel eAdvisoryLevel;
|
|
|
|
/**
|
|
* Path
|
|
*/
|
|
const AuString &path;
|
|
|
|
/**
|
|
* Mode
|
|
*/
|
|
FS::EFileOpenMode eMode;
|
|
|
|
/**
|
|
*
|
|
*/
|
|
bool bAlwaysCreateDirTree { true };
|
|
|
|
/**
|
|
* Indicates the handle will be for use with IAsyncTransactions as opposed to IFileStream and AuProcess
|
|
*/
|
|
bool bAsyncHandle { false };
|
|
|
|
/**
|
|
* Indicates the handle will only ever directly interface with the disk hardware as opposed to leveraging kernel assigned user shared memory
|
|
*/
|
|
bool bDirectIOMode { false };
|
|
|
|
cstatic HandleCreate Create(const AuString &path)
|
|
{
|
|
HandleCreate create(path);
|
|
create.bFailIfNonEmptyFile = true;
|
|
create.eMode = FS::EFileOpenMode::eReadWrite;
|
|
create.eAdvisoryLevel = FS::EFileAdvisoryLockLevel::eBlockReadWrite;
|
|
return AuMove(create);
|
|
}
|
|
|
|
cstatic HandleCreate ReadWrite(const AuString &path)
|
|
{
|
|
HandleCreate create(path);
|
|
create.eMode = FS::EFileOpenMode::eReadWrite;
|
|
create.eAdvisoryLevel = FS::EFileAdvisoryLockLevel::eBlockReadWrite;
|
|
return AuMove(create);
|
|
}
|
|
|
|
cstatic HandleCreate Read(const AuString &path)
|
|
{
|
|
HandleCreate read(path);
|
|
read.eMode = FS::EFileOpenMode::eRead;
|
|
read.eAdvisoryLevel = FS::EFileAdvisoryLockLevel::eBlockWrite;
|
|
return AuMove(read);
|
|
}
|
|
|
|
cstatic HandleCreate Open(const AuString &path)
|
|
{
|
|
HandleCreate read(path);
|
|
read.eMode = FS::EFileOpenMode::eRead;
|
|
read.eAdvisoryLevel = FS::EFileAdvisoryLockLevel::eBlockReadWrite;
|
|
return AuMove(read);
|
|
}
|
|
|
|
inline HandleCreate(const AuString &path) :
|
|
path(path)
|
|
{
|
|
}
|
|
};
|
|
|
|
virtual bool InitFromHandle(AuSPtr<IIOHandle> pHandle) = 0;
|
|
|
|
virtual bool InitFromPath(HandleCreate create) = 0;
|
|
|
|
virtual bool InitFromCopy(AuUInt64 uOSHandle) = 0;
|
|
|
|
virtual bool InitFromMove(AuUInt64 uOSHandle) = 0;
|
|
|
|
virtual bool InitFromPair(AuUInt64 uOSReadHandle, AuUInt64 uOSWriteHandle) = 0;
|
|
|
|
virtual bool InitFromPairMove(AuOptionalEx<AuUInt64> uOSReadHandle,
|
|
AuOptionalEx<AuUInt64> uOSWriteHandle) = 0;
|
|
|
|
virtual bool InitFromStreamEnum(EStandardStream eStream) = 0;
|
|
|
|
virtual AuUInt64 GetOSHandle() = 0;
|
|
|
|
virtual AuOptionalEx<AuUInt64> GetOSHandleSafe() = 0;
|
|
|
|
virtual AuUInt64 GetOSReadHandle() = 0;
|
|
|
|
virtual AuOptionalEx<AuUInt64> GetOSReadHandleSafe() = 0;
|
|
|
|
virtual AuUInt64 GetOSWriteHandle() = 0;
|
|
|
|
virtual AuOptionalEx<AuUInt64> GetOSWriteHandleSafe() = 0;
|
|
|
|
virtual bool IsValid() = 0;
|
|
|
|
virtual bool HasUniqueWriteHandle() = 0;
|
|
|
|
virtual bool IsAsync() = 0;
|
|
|
|
virtual AuString GetPath() = 0;
|
|
|
|
virtual bool IsFile() = 0;
|
|
|
|
virtual bool IsTTY() = 0;
|
|
|
|
virtual bool IsPipe() = 0;
|
|
};
|
|
|
|
AUKN_SHARED_SOO_NC(IOHandle, IIOHandle, 256);
|
|
|
|
AUKN_SYM bool IsHandleTTY(AuUInt uHandle);
|
|
|
|
AUKN_SYM bool IsHandlePipe(AuUInt uHandle);
|
|
|
|
AUKN_SYM bool IsHandleFile(AuUInt uHandle);
|
|
} |