Source code of Windows XP (NT5)
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171 lines
4.1 KiB

#pragma once
#include "nmbase.h"
#include "nmres.h"
//
// The queue item structure. The device instance id of the queue item
// will follow the actual structure (i.e. string start =
// beginning of structure + size of structure.)
//
struct NCQUEUE_ITEM
{
DWORD cbSize;
NC_INSTALL_TYPE eType;
GUID ClassGuid;
GUID InstanceGuid;
DWORD dwCharacter;
DWORD dwDeipFlags;
union
{
DWORD cchPnpId;
PWSTR pszPnpId;
};
union
{
DWORD cchInfId;
PWSTR pszInfId;
};
};
class ATL_NO_VTABLE CInstallQueue :
public CComObjectRootEx <CComMultiThreadModel>,
public CComCoClass <CInstallQueue, &CLSID_InstallQueue>,
public INetInstallQueue
{
public:
CInstallQueue();
VOID FinalRelease ();
DECLARE_CLASSFACTORY_DEFERRED_SINGLETON(CInstallQueue)
DECLARE_REGISTRY_RESOURCEID(IDR_INSTALLQUEUE)
BEGIN_COM_MAP(CInstallQueue)
COM_INTERFACE_ENTRY(INetInstallQueue)
END_COM_MAP()
// INetInstallQueue
STDMETHOD (AddItem) (
IN const NIQ_INFO* pInfo);
STDMETHOD (ProcessItems) ()
{
return HrQueueWorkItem();
};
VOID Close();
HRESULT HrOpen();
HRESULT HrGetNextItem(NCQUEUE_ITEM** ppncqi);
HRESULT HrRefresh();
VOID MarkCurrentItemForDeletion();
protected:
CRITICAL_SECTION m_csReadLock;
CRITICAL_SECTION m_csWriteLock;
DWORD m_dwNextAvailableIndex;
HKEY m_hkey;
INT m_nCurrentIndex;
DWORD m_cItems;
PWSTR* m_aszItems;
DWORD m_cItemsToDelete;
PWSTR* m_aszItemsToDelete;
BOOL m_fQueueIsOpen;
DWORD DwSizeOfItem(NCQUEUE_ITEM* pncqi);
VOID DeleteMarkedItems();
BOOL FIsQueueIndexInRange();
VOID FreeAszItems();
HRESULT HrAddItem(
const NIQ_INFO* pInfo);
NCQUEUE_ITEM* PncqiCreateItem(
const NIQ_INFO* pInfo);
VOID SetNextAvailableIndex();
VOID SetItemStringPtrs(NCQUEUE_ITEM* pncqi);
HRESULT HrQueueWorkItem();
};
//+---------------------------------------------------------------------------
//
// Function: DwSizeOfItem
//
// Purpose: Determines the size (in bytes) of the entire NCQUEUE_ITEM
// structure. This includes the string (and the NULL terminator)
// appended to the end of the structure.
//
// Arguments:
// ncqi [in] The queue item.
//
// Returns: DWORD. The size in bytes.
//
// Author: billbe 25 Aug 1998
//
// Notes:
//
inline DWORD
CInstallQueue::DwSizeOfItem (NCQUEUE_ITEM* pncqi)
{
AssertH(pncqi);
PWSTR pszDeviceInstanceId = (PWSTR)((BYTE*)pncqi + pncqi->cbSize);
DWORD cbDeviceInstanceId = CbOfSzAndTerm (pszDeviceInstanceId);
PWSTR pszInfId = (PWSTR)((BYTE*)pszDeviceInstanceId + cbDeviceInstanceId);
return pncqi->cbSize + cbDeviceInstanceId + CbOfSzAndTerm (pszInfId);
};
//+---------------------------------------------------------------------------
//
// Function: SetItemStringPtrs
//
// Purpose: Sets the pszwDeviceInstanceId member of the NCQUEUE_ITEM
// structure to the correct location of the device id string.
//
// Arguments:
// pncqi [inout] The queue item.
//
// Returns: nothing
//
// Author: billbe 25 Aug 1998
//
// Notes:
//
inline VOID
CInstallQueue::SetItemStringPtrs (
NCQUEUE_ITEM* pncqi)
{
AssertH(pncqi);
pncqi->pszPnpId = (PWSTR)((BYTE*)pncqi + pncqi->cbSize);
DWORD cbPnpId = CbOfSzAndTerm (pncqi->pszPnpId);
pncqi->pszInfId = (PWSTR)((BYTE*)pncqi->pszPnpId + cbPnpId);
};
inline BOOL
CInstallQueue::FIsQueueIndexInRange()
{
return (m_nCurrentIndex >= 0) && (m_nCurrentIndex < (INT)m_cItems);
}
inline void
CInstallQueue::FreeAszItems()
{
for (DWORD dw = 0; dw < m_cItems; ++dw)
{
MemFree(m_aszItems[dw]);
}
MemFree(m_aszItems);
m_aszItems = NULL;
m_cItems = 0;
}
VOID
WaitForInstallQueueToExit();