429 lines
11 KiB
C++
429 lines
11 KiB
C++
/***
|
|
Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
|
|
|
|
File: Async.NT.cpp
|
|
Date: 2021-9-13
|
|
Author: Reece
|
|
***/
|
|
#include <Source/RuntimeInternal.hpp>
|
|
#include "FS.hpp"
|
|
#include "Async.NT.hpp"
|
|
#include "FileAdvisory.NT.hpp"
|
|
#include <Source/Loop/Loop.hpp>
|
|
#include <Source/Loop/LSHandle.hpp>
|
|
|
|
namespace Aurora::IO::FS
|
|
{
|
|
struct FileHandle
|
|
{
|
|
~FileHandle();
|
|
|
|
bool Init(const AuString &path, EFileOpenMode openMode, bool directIO, EFileAdvisoryLockLevel lock);
|
|
|
|
HANDLE handle = INVALID_HANDLE_VALUE;
|
|
AuString path;
|
|
bool readOnly;
|
|
bool directIO;
|
|
};
|
|
|
|
class NtAsyncFileStream : public IAsyncFileStream
|
|
{
|
|
public:
|
|
AuSPtr<IAsyncTransaction> NewTransaction() override;
|
|
|
|
void Init(const AuSPtr<FileHandle> &handle);
|
|
|
|
AuSPtr<FileHandle> GetHandle();
|
|
|
|
private:
|
|
AuSPtr<FileHandle> handle_;
|
|
};
|
|
|
|
class NtAsyncFileTransaction : public IAsyncTransaction, AuEnableSharedFromThis<NtAsyncFileTransaction>
|
|
{
|
|
public:
|
|
~NtAsyncFileTransaction();
|
|
|
|
bool Init(const AuSPtr<FileHandle> &handle);
|
|
|
|
bool StartRead(AuUInt64 offset, const AuSPtr<AuMemoryViewWrite> &memoryView) override;
|
|
bool StartWrite(AuUInt64 offset, const AuSPtr<AuMemoryViewRead> &memoryView) override;
|
|
|
|
bool Complete() override;
|
|
AuUInt32 GetLastPacketLength() override;
|
|
|
|
void SetCallback(const AuSPtr<IAsyncFinishedSubscriber> &sub) override;
|
|
|
|
bool Wait(AuUInt32 timeout) override;
|
|
AuSPtr<Loop::ILoopSource> NewLoopSource() override;
|
|
|
|
void DispatchCb();
|
|
HANDLE GetHandle();
|
|
AuSPtr<FileHandle> GetFileHandle();
|
|
|
|
// Required for a very evil hack
|
|
OVERLAPPED overlap_ {};
|
|
AuSPtr<NtAsyncFileTransaction> pin_;
|
|
private:
|
|
AuSPtr<void> memoryHold_;
|
|
AuSPtr<FileHandle> handle_;
|
|
HANDLE event_ = INVALID_HANDLE_VALUE;
|
|
AuUInt32 lastAbstractStat_ {}, lastAbstractOffset_ {};
|
|
bool latch_ {};
|
|
AuSPtr<IAsyncFinishedSubscriber> sub_;
|
|
};
|
|
|
|
struct NtAsyncFileTransactionLoopSource : public Loop::LSHandle
|
|
{
|
|
NtAsyncFileTransactionLoopSource(AuSPtr<NtAsyncFileTransaction> that) : caller_(that), Loop::LSHandle(AuUInt(that->GetFileHandle()->handle))
|
|
{}
|
|
|
|
virtual bool IsSignaled() override;
|
|
virtual bool OnTrigger(AuUInt handle) override;
|
|
virtual Loop::ELoopSource GetType() override;
|
|
|
|
private:
|
|
|
|
AuWPtr<NtAsyncFileTransaction> caller_;
|
|
|
|
};
|
|
|
|
bool NtAsyncFileTransactionLoopSource::OnTrigger(AuUInt handle)
|
|
{
|
|
return IsSignaled();
|
|
}
|
|
|
|
Loop::ELoopSource NtAsyncFileTransactionLoopSource::GetType()
|
|
{
|
|
return Loop::ELoopSource::eSourceAIO;
|
|
}
|
|
|
|
bool NtAsyncFileTransactionLoopSource::IsSignaled()
|
|
{
|
|
auto lock = caller_.lock();
|
|
if (!lock) return LSEvent::IsSignaled();
|
|
return lock->Complete();
|
|
}
|
|
|
|
NtAsyncFileTransaction::~NtAsyncFileTransaction()
|
|
{
|
|
AuWin32CloseHandle(this->event_);
|
|
}
|
|
|
|
FileHandle::~FileHandle()
|
|
{
|
|
AuWin32CloseHandle(this->handle);
|
|
}
|
|
|
|
bool FileHandle::Init(const AuString &path, EFileOpenMode openMode, bool directIO, EFileAdvisoryLockLevel lock)
|
|
{
|
|
HANDLE fileHandle;
|
|
|
|
auto pathex = NormalizePathRet(path);
|
|
if (!pathex.empty())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
auto win32Path = Locale::ConvertFromUTF8(pathex);
|
|
if (!win32Path.empty())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
auto flags = FILE_FLAG_OVERLAPPED;
|
|
|
|
if (directIO)
|
|
{
|
|
flags |= FILE_FLAG_NO_BUFFERING;
|
|
}
|
|
|
|
fileHandle = INVALID_HANDLE_VALUE;
|
|
|
|
switch (openMode)
|
|
{
|
|
case EFileOpenMode::eRead:
|
|
{
|
|
fileHandle = CreateFileW(win32Path.c_str(), GENERIC_READ, NtLockAdvisoryToShare(lock), NULL, OPEN_EXISTING, flags, NULL);
|
|
break;
|
|
}
|
|
case EFileOpenMode::eReadWrite:
|
|
case EFileOpenMode::eWrite:
|
|
{
|
|
CreateDirectories(pathex, true);
|
|
fileHandle = CreateFileW(win32Path.c_str(), (openMode == EFileOpenMode::eReadWrite) ? (GENERIC_WRITE | GENERIC_READ) : GENERIC_WRITE, NtLockAdvisoryToShare(lock), NULL, CREATE_ALWAYS, flags, NULL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fileHandle == INVALID_HANDLE_VALUE)
|
|
{
|
|
SysPushErrorIO("Missing file: {}", path);
|
|
return {};
|
|
}
|
|
|
|
this->directIO = directIO;
|
|
this->handle = fileHandle;
|
|
this->readOnly = readOnly;
|
|
return true;
|
|
}
|
|
|
|
AuSPtr<FileHandle> NtAsyncFileStream::GetHandle()
|
|
{
|
|
return handle_;
|
|
}
|
|
|
|
void NtAsyncFileStream::Init(const AuSPtr<FileHandle> &handle)
|
|
{
|
|
this->handle_ = handle;
|
|
}
|
|
|
|
AuSPtr<IAsyncTransaction> NtAsyncFileStream::NewTransaction()
|
|
{
|
|
auto shared = AuMakeShared<NtAsyncFileTransaction>();
|
|
if (!shared)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
if (!shared->Init(this->handle_))
|
|
{
|
|
return {};
|
|
}
|
|
|
|
return shared;
|
|
}
|
|
|
|
bool NtAsyncFileTransaction::Init(const AuSPtr<FileHandle> &handle)
|
|
{
|
|
this->handle_ = handle;
|
|
this->overlap_.hEvent = this->event_ = CreateEvent(NULL, true, 0, NULL);
|
|
return this->overlap_.hEvent != INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
static bool TranslateNtStatus(NtAsyncFileTransaction *that, BOOL val)
|
|
{
|
|
if ((val) ||
|
|
(!val && GetLastError() == ERROR_IO_PENDING))
|
|
{
|
|
if (val)
|
|
{
|
|
that->DispatchCb();
|
|
that->pin_.reset();
|
|
}
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
that->pin_.reset();
|
|
SysPushErrorFIO("Async FIO error: {}", that->GetFileHandle()->path);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static VOID WINAPI GenericCompletionRoutine(
|
|
_In_ DWORD dwErrorCode,
|
|
_In_ DWORD dwNumberOfBytesTransfered,
|
|
_Inout_ LPOVERLAPPED lpOverlapped
|
|
)
|
|
{
|
|
auto transaction = reinterpret_cast<NtAsyncFileTransaction *>(reinterpret_cast<AuUInt8*>(lpOverlapped) - offsetof(NtAsyncFileTransaction, overlap_));
|
|
transaction->Complete();
|
|
}
|
|
|
|
bool NtAsyncFileTransaction::StartRead(AuUInt64 offset, const AuSPtr<AuMemoryViewWrite> &memoryView)
|
|
{
|
|
if (AuExchange(this->pin_, AuSharedFromThis()))
|
|
{
|
|
return {};
|
|
}
|
|
|
|
this->latch_ = false;
|
|
::ResetEvent(this->this->event_);
|
|
|
|
this->memoryHold_ = memoryView;
|
|
|
|
this->lastAbstractStat_ = memoryView->length;
|
|
this->lastAbstractOffset_ = offset;
|
|
|
|
this->overlap_.Offset = offset & 0xFFFFFFFF;
|
|
this->overlap_.OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
|
|
|
|
auto ret = ::ReadFileEx(this->handle_->handle, memoryView->ptr, memoryView->length, &overlap_, GenericCompletionRoutine);
|
|
return TranslateNtStatus(this, ret);
|
|
}
|
|
|
|
bool NtAsyncFileTransaction::StartWrite(AuUInt64 offset, const AuSPtr<AuMemoryViewRead> &memoryView)
|
|
{
|
|
if (AuExchange(this->pin_, AuSharedFromThis()))
|
|
{
|
|
return {};
|
|
}
|
|
|
|
this->latch_ = false;
|
|
::ResetEvent(this->this->event_);
|
|
|
|
this->memoryHold_ = memoryView;
|
|
|
|
this->lastAbstractStat_ = memoryView->length;
|
|
this->lastAbstractOffset_ = offset;
|
|
|
|
this->overlap_.Offset = offset & 0xFFFFFFFF;
|
|
this->overlap_.OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
|
|
auto ret = ::WriteFileEx(this->handle_->handle, memoryView->ptr, memoryView->length, &overlap_, GenericCompletionRoutine);
|
|
return TranslateNtStatus(this, ret);
|
|
}
|
|
|
|
void NtAsyncFileTransaction::DispatchCb()
|
|
{
|
|
if (AuExchange(this->latch_, true))
|
|
{
|
|
return;
|
|
}
|
|
|
|
this->memoryHold_.reset();
|
|
auto hold = AuExchange(this->pin_, {});
|
|
|
|
if (hold->sub_)
|
|
{
|
|
DWORD read {};
|
|
GetOverlappedResult(hold->handle_->handle, &hold->overlap_, &read, false);
|
|
hold->sub_->OnAsyncFileOpFinished(hold->lastAbstractOffset_, read);
|
|
}
|
|
}
|
|
|
|
bool NtAsyncFileTransaction::Complete()
|
|
{
|
|
auto ret = WaitForSingleObjectEx(this->event_, 0, true);
|
|
if (ret == WAIT_OBJECT_0)
|
|
{
|
|
DispatchCb();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
AuUInt32 NtAsyncFileTransaction::GetLastPacketLength()
|
|
{
|
|
DWORD read {};
|
|
GetOverlappedResult(this->handle_->handle, &this->overlap_, &read, false);
|
|
return read;
|
|
}
|
|
|
|
void NtAsyncFileTransaction::SetCallback(const AuSPtr<IAsyncFinishedSubscriber> &sub)
|
|
{
|
|
this->sub_ = sub;
|
|
}
|
|
|
|
bool NtAsyncFileTransaction::Wait(AuUInt32 timeout)
|
|
{
|
|
auto ret = WaitForSingleObjectEx(this->event_, timeout ? timeout : INFINITE, true);
|
|
if (ret == WAIT_OBJECT_0)
|
|
{
|
|
DispatchCb();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
HANDLE NtAsyncFileTransaction::GetHandle()
|
|
{
|
|
return this->event_;
|
|
}
|
|
|
|
AuSPtr<FileHandle> NtAsyncFileTransaction::GetFileHandle()
|
|
{
|
|
return this->handle_;
|
|
}
|
|
|
|
AuSPtr<Loop::ILoopSource> NtAsyncFileTransaction::NewLoopSource()
|
|
{
|
|
return AuMakeShared<NtAsyncFileTransactionLoopSource>(AuSharedFromThis());
|
|
}
|
|
|
|
AUKN_SYM IAsyncFileStream *OpenAsyncNew(const AuString &path, EFileOpenMode openMode, bool directIO, EFileAdvisoryLockLevel lock)
|
|
{
|
|
AuSPtr<FileHandle> fileHandle;
|
|
NtAsyncFileStream *stream;
|
|
|
|
if (path.empty())
|
|
{
|
|
SysPushErrorParam("Empty path");
|
|
return {};
|
|
}
|
|
|
|
if (!EFileOpenModeIsValid(openMode))
|
|
{
|
|
SysPushErrorParam("Invalid open mode");
|
|
return {};
|
|
}
|
|
|
|
try
|
|
{
|
|
fileHandle = AuMakeShared<FileHandle>();
|
|
if (!fileHandle->Init(path, openMode, directIO, lock))
|
|
{
|
|
return {};
|
|
}
|
|
}
|
|
catch (...)
|
|
{
|
|
SysPushErrorCatch("Couldn't initialize FileHandle");
|
|
return {};
|
|
}
|
|
|
|
try
|
|
{
|
|
stream = _new NtAsyncFileStream();
|
|
if (!stream)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
stream->Init(fileHandle);
|
|
}
|
|
catch (...)
|
|
{
|
|
if (stream) delete stream;
|
|
SysPushErrorCatch("Couldn't initialize NtAsyncFileStream");
|
|
return {};
|
|
}
|
|
|
|
return stream;
|
|
}
|
|
|
|
AUKN_SYM void OpenAsyncRelease(IAsyncFileStream *handle)
|
|
{
|
|
AuSafeDelete<NtAsyncFileStream *>(handle);
|
|
}
|
|
|
|
AUKN_SYM AuUInt32 WaitMultiple(const AuList<AuSPtr<IAsyncTransaction>> &files, AuUInt32 timeout)
|
|
{
|
|
AuList<HANDLE> handles;
|
|
AuUInt32 count {};
|
|
|
|
if (files.empty())
|
|
{
|
|
return true;
|
|
}
|
|
|
|
for (const auto & file : files)
|
|
{
|
|
handles.push_back(AuStaticPointerCast<NtAsyncFileTransaction>(file)->GetHandle());
|
|
}
|
|
|
|
auto ret = WaitForMultipleObjectsEx(handles.size(), handles.data(), false, timeout ? timeout : INFINITE, TRUE);
|
|
|
|
if (ret == WAIT_TIMEOUT || ret == WAIT_FAILED)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
for (auto &file : files)
|
|
{
|
|
count += AuStaticPointerCast<NtAsyncFileTransaction>(file)->Complete();
|
|
}
|
|
|
|
return count;
|
|
}
|
|
} |