Sample Code

Windows Driver Samples/ Toaster Sample Driver/ C++/ umdf/ Toastmon/ RemoteTarget.h/

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/*++
 
Copyright (C) Microsoft Corporation, All Rights Reserved
 
Module Name:
 
    RemoteTarget.h
 
Abstract:
 
    This module contains the type definitions for the UMDF sample
    driver's remote target callback class.
 
Environment:
 
    Windows User-Mode Driver Framework (WUDF)
 
--*/
 
#pragma once
 
 
#define READ_BUF_SIZE           100
#define WRITE_BUF_SIZE          120
 
 
class CMyRemoteTarget : public CUnknown,
                        public IRequestCallbackRequestCompletion,
                        public IRemoteTargetCallbackRemoval,
                        public IObjectCleanup
{
    //
    // Public data members.
    //
public:
 
    //
    // This is the Entry for the list of Remote Targets.
    // The List head is held by CMyDevice.
    //
    LIST_ENTRY m_Entry;
 
     
    //
    // Private data members.
    //
private:
 
    CMyDevice * m_MyDevice; // Weak reference
 
    //
    // The handle for a thread to post I/O requests to the remote target
    //
    HANDLE m_hThread;
     
    CComPtr<IWDFRemoteTarget>    m_FxTarget;
     
    bool                         m_WriteInProgress;
    CComPtr<IWDFIoRequest2>      m_FxWriteRequest;
    CComPtr<IWDFMemory>          m_FxWriteMemory;
 
    bool                         m_ReadInProgress;
    CComPtr<IWDFIoRequest2>      m_FxReadRequest;
    CComPtr<IWDFMemory>          m_FxReadMemory;
 
    //
    // Private methods.
    //
private:
 
    void
    PostIoRequests(
        VOID
        );
 
    //
    // Protected methods
    //
protected:
     
    CMyRemoteTarget(
        VOID
        ) :
        m_MyDevice(NULL),
        m_hThread(NULL),
        m_WriteInProgress(false),
        m_ReadInProgress(false)
         
    {
    }
     
    HRESULT
    Initialize(
        _In_ CMyDevice           * MyDevice,
        _In_ IWDFDriver          * FxDriver,
        _In_ IWDFDevice2         * FxDevice,
        _In_ IWDFRemoteInterface * FxRemoteInterface
        );
 
    //
    // Public methods
    //
public:
 
    //
    // The factory method used to create an instance of this driver.
    //
    static
    HRESULT
    CreateInstance(
        _In_ CMyDevice           * MyDevice,
        _In_ IWDFDriver          * FxDriver,
        _In_ IWDFDevice2         * FxDevice,
        _In_ IWDFRemoteInterface * FxRemoteInterface,
        _Out_ PCMyRemoteTarget   * MyRemoteTarget
        );
     
    ~CMyRemoteTarget(
        VOID
        )
    {
    }
 
    DWORD WINAPI
    ThreadProc(
        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
        );
 
    //
    // IRequestCallbackRequestCompletion
    //
    void
    STDMETHODCALLTYPE
    OnCompletion(
        _In_ IWDFIoRequest               * FxRequest,
        _In_ IWDFIoTarget                * /* FxTarget */,
        _In_ IWDFRequestCompletionParams * /* Params */,
        _In_ void*                         /* Context */
        );
    IRequestCallbackRequestCompletion *
    QueryIRequestCallbackRequestCompletion(
        VOID
        )
    {
        AddRef();
        return static_cast<IRequestCallbackRequestCompletion*>(this);
    }
 
    //
    // IRemoteTargetCallbackRemoval
    //
    BOOL
    STDMETHODCALLTYPE
    OnRemoteTargetQueryRemove(
        _In_ IWDFRemoteTarget * /* FxTarget */
        );
    VOID
    STDMETHODCALLTYPE
    OnRemoteTargetRemoveCanceled(
        _In_ IWDFRemoteTarget * /* FxTarget */
        );
    VOID
    STDMETHODCALLTYPE
    OnRemoteTargetRemoveComplete(
        _In_ IWDFRemoteTarget * /* FxTarget */
        );
    IRemoteTargetCallbackRemoval *
    QueryIRemoteTargetCallbackRemoval(
        VOID
        )
    {
        AddRef();
        return static_cast<IRemoteTargetCallbackRemoval*>(this);
    }
 
    //
    // IObjectCleanup
    //
    void
    STDMETHODCALLTYPE
    OnCleanup(
        _In_ IWDFObject* /* FxObject */
        );
    IObjectCleanup *
    QueryIObjectCleanup(
        VOID
        )
    {
        AddRef();
        return static_cast<IObjectCleanup*>(this);
    }
 
};

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