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/*++
Copyright (C) Microsoft Corporation, All Rights Reserved
Module Name:
Device.h
Abstract:
This module contains the type definitions for the UMDF Echo sample
driver's device callback class.
Environment:
Windows User-Mode Driver Framework (WUDF)
--*/
#pragma once
#include "queue.h"
//
// Class for the iotrace driver.
//
class CMyDevice :
public CUnknown,
public IPnpCallbackSelfManagedIo
{
//
// Private data members.
//
private:
IWDFDevice *m_FxDevice;
//
// Completion Thread handle used by queue callback object
//
HANDLE m_ThreadHandle;
//
// Our queue callback object
// Strong reference - since we pass it to the thread we create
//
CMyQueue *m_Queue;
//
// Private methods.
//
private:
CMyDevice(
VOID
)
{
m_FxDevice = NULL;
}
HRESULT
Initialize(
_In_ IWDFDriver *FxDriver,
_In_ IWDFDeviceInitialize *FxDeviceInit
);
IPnpCallbackSelfManagedIo *
QueryIPnpCallbackSelfManagedIo(
VOID
)
{
AddRef();
return static_cast<IPnpCallbackSelfManagedIo *>(this);
}
//
// Public methods
//
public:
//
// The factory method used to create an instance of this driver.
//
static
HRESULT
CreateInstance(
_In_ IWDFDriver *FxDriver,
_In_ IWDFDeviceInitialize *FxDeviceInit,
_Out_ PCMyDevice *Device
);
HRESULT
Configure(
VOID
);
//
// COM methods
//
public:
//
// IUnknown methods.
//
virtual
ULONG
STDMETHODCALLTYPE
AddRef(
VOID
)
{
return __super::AddRef();
}
_At_(this, __drv_freesMem(object))
virtual
ULONG
STDMETHODCALLTYPE
Release(
VOID
)
{
return __super::Release();
}
virtual
HRESULT
STDMETHODCALLTYPE
QueryInterface(
_In_ REFIID InterfaceId,
_Out_ PVOID *Object
);
//
// IPnpCallbackSelfManagedIo methods
//
//
// We implement this interface to create and tear down
// our completion thread
//
// It is critical that we wait for all the threads we create
// to exit during OnSelfManagedIoCleanup, otherwise thread
// may continue to execute when framework unloads the driver,
// leading to a crash
//
// We don't manage any I/O separate from the queue, so apart
// from OnSelfManagedIoInit and OnSelfManagedIoCleanup, other
// methods have token implementations
//
virtual
void
STDMETHODCALLTYPE
OnSelfManagedIoCleanup(
_In_ IWDFDevice * pWdfDevice
);
virtual
void
STDMETHODCALLTYPE
OnSelfManagedIoFlush(
_In_ IWDFDevice * pWdfDevice
)
{
UNREFERENCED_PARAMETER( pWdfDevice );
}
virtual
HRESULT
STDMETHODCALLTYPE
OnSelfManagedIoInit(
_In_ IWDFDevice * pWdfDevice
);
virtual
HRESULT
STDMETHODCALLTYPE
OnSelfManagedIoSuspend(
_In_ IWDFDevice * pWdfDevice
)
{
UNREFERENCED_PARAMETER( pWdfDevice );
return S_OK;
}
virtual
HRESULT
STDMETHODCALLTYPE
OnSelfManagedIoRestart(
_In_ IWDFDevice * pWdfDevice
)
{
UNREFERENCED_PARAMETER( pWdfDevice );
return S_OK;
}
virtual
HRESULT
STDMETHODCALLTYPE
OnSelfManagedIoStop(
_In_ IWDFDevice * pWdfDevice
)
{
UNREFERENCED_PARAMETER( pWdfDevice );
return S_OK;
}
};
|
