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//**@@@*@@@****************************************************
//
// Microsoft Windows DevTopo.dll
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//**@@@*@@@****************************************************
//
// FileName: Parts.cpp
//
// Abstract: Implementation of CPart and derived classes.
//
// --------------------------------------------------------------------------------
#include "stdafx.h"
#include <DeviceTopology.h>
#include "Parts.h"
_Analysis_mode_(_Analysis_code_type_user_driver_)
// ----------------------------------------------------------------------
// Function:
// CPartsList::CPartsList
//
// Description:
// CPartsList constructor
// ----------------------------------------------------------------------
CPartsList::CPartsList() :
m_refCount(1)
{
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::~CPartsList
//
// Description:
// CPartsList destructor
// ----------------------------------------------------------------------
CPartsList::~CPartsList()
{
ATLASSERT(m_refCount == 0);
IPart* pIPart;
while (m_lstParts.RemoveHead(&pIPart))
{
SAFE_RELEASE(pIPart);
}
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::QueryInterface
//
// Description:
// Implementation of IUnknown::QueryInterface
//
// Parameters:
// riid - [in] Identifier of the interface being queried
// ppvObj - [in] Pointer to a buffer that receives a pointer to the
// object whose interface is queried
//
// Return:
// S_OK if successful
// ----------------------------------------------------------------------
STDMETHODIMP CPartsList::QueryInterface
(
const IID& iid,
void** ppUnk
)
{
if (!ppUnk)
return E_POINTER;
HRESULT hr = E_NOINTERFACE;
*ppUnk = NULL;
if (iid == __uuidof(IPartsList))
{
*ppUnk = (IPartsList*)this;
hr = S_OK;
AddRef();
}
else
if (iid == __uuidof(IUnknown))
{
*ppUnk = (IUnknown*)this;
hr = S_OK;
AddRef();
}
return hr;
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::AddRef
//
// Description:
// Implementation of IUnknown::AddRef
//
// Return:
// New refcount
// ----------------------------------------------------------------------
ULONG STDMETHODCALLTYPE CPartsList::AddRef(void)
{
return InterlockedIncrement(&m_refCount);
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::Release
//
// Description:
// Implementation of IUnknown::Release
//
// Return:
// New refcount
// ----------------------------------------------------------------------
ULONG STDMETHODCALLTYPE CPartsList::Release(void)
{
ATLASSERT(m_refCount > 0);
LONG lRef = InterlockedDecrement(&m_refCount);
ATLASSERT(lRef >= 0);
if (lRef == 0)
{
delete this;
}
return lRef;
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::AddPart
//
// Description:
// Adds an item to the list of IPart interfaces
//
// Parameters:
// pIPart - [in] Part to add to the list
//
// Return:
// S_OK if successful
// ----------------------------------------------------------------------
STDMETHODIMP CPartsList::AddPart
(
IPart* pIPart
)
{
if (pIPart == NULL)
return E_POINTER;
// Protect m_lstParts access
m_CritSection.Enter();
pIPart->AddRef();
m_lstParts.AddTail(pIPart);
m_CritSection.Leave();
return S_OK;
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::AddPart
//
// Description:
// Adds the PartsList Parts to the list of IPart interfaces
//
// Parameters:
// pIParts - [in] List of Parts to be added to the list
//
// Return:
// S_OK if successful
// ----------------------------------------------------------------------
STDMETHODIMP CPartsList::AddParts
(
IPartsList* pIParts
)
{
ATLASSERT(pIParts != NULL);
HRESULT hr = S_OK;
UINT i, cParts = 0;
// Protect m_lstParts
m_CritSection.Enter();
// Loop through specified parts list
hr = pIParts->GetCount(&cParts);
IF_FAILED_JUMP(hr, Exit);
for (i = 0; (i < cParts) && (hr == S_OK); i++)
{
IPart* pIPart;
// ... and copy reference to each part
hr = pIParts->GetPart(i, &pIPart);
IF_FAILED_JUMP(hr, Exit);
// ... to this list
m_lstParts.AddTail(pIPart);
}
Exit:
m_CritSection.Leave();
return hr;
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::GetCount
//
// Description:
// Returns the count of items in the list of IParts
//
// Parameters:
// pCount - [out] the count of parts in this list
//
// Return:
// S_OK if successful
//
// ----------------------------------------------------------------------
_Use_decl_annotations_
STDMETHODIMP CPartsList::GetCount
(
UINT* pCount
)
{
if (pCount == NULL)
return E_POINTER;
// Protect m_lstParts access
m_CritSection.Enter();
*pCount = m_lstParts.GetCount();
m_CritSection.Leave();
return S_OK;
}
// ----------------------------------------------------------------------
// Function:
// CPartsList::GetPart
//
// Description:
// Returns the nIndex-th item in the list of IParts
//
// Parameters:
// nIndex - [in] index of the part to access
// uMsg - [out] the part at the specified index
//
// Return:
// S_OK if successful
//
// ----------------------------------------------------------------------
_Use_decl_annotations_
STDMETHODIMP CPartsList::GetPart
(
UINT nIndex,
IPart** ppPart
)
{
HRESULT hr;
IPart* pIPart = NULL;
// Protect m_lstParts access
m_CritSection.Enter();
IF_TRUE_ACTION_JUMP((ppPart == NULL), hr = E_POINTER, Exit);
*ppPart = NULL;
IF_TRUE_ACTION_JUMP((nIndex >= m_lstParts.GetCount()), hr = E_INVALIDARG, Exit);
IF_TRUE_ACTION_JUMP((!m_lstParts.GetAt(nIndex, &pIPart)), hr = E_NOTFOUND, Exit);
// Take care of AddRef and ensure correct interface in one shot
hr = pIPart->QueryInterface(__uuidof(IPart), reinterpret_cast<void**>(ppPart));
IF_FAILED_JUMP(hr, Exit);
Exit:
m_CritSection.Leave();
return hr;
}
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