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/*++
Copyright (c) Microsoft Corporation, All Rights Reserved
Module Name:
queue.h
Abstract:
This file defines the queue callback interface.
Environment:
Windows User-Mode Driver Framework (WUDF)
--*/
#pragma once
// Set max write length for testing
#define MAX_WRITE_LENGTH (40*1024)
// Set timer period in ms
#define TIMER_PERIOD 100
//
// Queue Callback Object.
//
class CMyQueue :
public IQueueCallbackDeviceIoControl,
public IQueueCallbackRead,
public IQueueCallbackWrite,
public CUnknown
{
PVOID m_Buffer; // Current buffer
ULONG m_Length; // Length of the buffer
SIZE_T m_XferredBytes; // Amount of bytes transferred for the current request
IWDFIoRequest2 *m_CurrentRequest; // Current request
CRITICAL_SECTION m_Crit; // Lock to protect updates to CMyQueue fields
BOOLEAN m_ExitThread; // If TRUE Terminate thread.
BOOLEAN m_InitCritSec; // If TRUE lock initialized
IWDFIoQueue *m_FxQueue;
CMyQueue() :
m_Buffer(NULL),
m_Length (0),
m_CurrentRequest(NULL),
m_XferredBytes(0),
m_ExitThread(FALSE),
m_InitCritSec(FALSE),
m_FxQueue(NULL)
{
}
virtual ~CMyQueue();
_Acquires_lock_(this->m_Crit)
__inline
void
Lock(
)
{
::EnterCriticalSection(&m_Crit);
}
_Releases_lock_(this->m_Crit)
__inline
void
Unlock(
)
{
::LeaveCriticalSection(&m_Crit);
}
HRESULT
Initialize(
_In_ IWDFDevice *FxDevice
);
public:
//
// Completion thread routine.
//
static DWORD CompletionThread( PVOID ThreadParameter);
//
// Sets the flag to make thread exit
//
void
SetExitThread()
{
m_ExitThread = TRUE;
}
static
HRESULT
CreateInstance(
_In_ IWDFDevice *FxDevice,
_Out_ PCMyQueue *Queue
);
HRESULT
Configure(
VOID
)
{
return S_OK;
}
IQueueCallbackDeviceIoControl *
QueryIQueueCallbackDeviceIoControl(
VOID
)
{
AddRef();
return static_cast<IQueueCallbackDeviceIoControl *>(this);
}
IQueueCallbackRead *
QueryIQueueCallbackRead(
VOID
)
{
AddRef();
return static_cast<IQueueCallbackRead *>(this);
}
IQueueCallbackWrite *
QueryIQueueCallbackWrite(
VOID
)
{
AddRef();
return static_cast<IQueueCallbackWrite *>(this);
}
//
// IUnknown
//
virtual
ULONG
STDMETHODCALLTYPE
AddRef(
VOID
) {
return CUnknown::AddRef();
}
_At_(this, __drv_freesMem(object))
virtual
ULONG
STDMETHODCALLTYPE
Release(
VOID
) {
return CUnknown::Release();
}
virtual
HRESULT
STDMETHODCALLTYPE
QueryInterface(
_In_ REFIID InterfaceId,
_Out_ PVOID *Object
);
//
// Wdf Callbacks
//
// IQueueCallbackDeviceIoControl
//
virtual
VOID
STDMETHODCALLTYPE
OnDeviceIoControl(
_In_ IWDFIoQueue *pWdfQueue,
_In_ IWDFIoRequest *pWdfRequest,
_In_ ULONG ControlCode,
_In_ SIZE_T InputBufferSizeInBytes,
_In_ SIZE_T OutputBufferSizeInBytes
);
// IQueueCallbackWrite
//
virtual
VOID
STDMETHODCALLTYPE
OnWrite(
_In_ IWDFIoQueue *pWdfQueue,
_In_ IWDFIoRequest *pWdfRequest,
_In_ SIZE_T NumOfBytesToWrite
);
// IQueueCallbackRead
//
virtual
VOID
STDMETHODCALLTYPE
OnRead(
_In_ IWDFIoQueue *pWdfQueue,
_In_ IWDFIoRequest *pWdfRequest,
_In_ SIZE_T NumOfBytesToRead
);
};
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