CServiceGroup Class Reference

Inheritance diagram for CServiceGroup:

Collaboration diagram for CServiceGroup:

Public Member Functions
STDMETHODIMP	QueryInterface (REFIID InterfaceId, PVOID *Interface)
	CServiceGroup (IUnknown *OuterUnknown)
virtual	~CServiceGroup ()
Public Member Functions inherited from CUnknownImpl< IServiceGroup >
	STDMETHODIMP_ (ULONG) AddRef()
	STDMETHODIMP_ (ULONG) Release()

Public Attributes
	IMP_IServiceGroup

Protected Attributes
LIST_ENTRY	m_ServiceSinkHead
BOOL	m_TimerInitialized
KTIMER	m_Timer
KDPC	m_Dpc
KSPIN_LOCK	m_Lock

Friends
VOID NTAPI	IServiceGroupDpc (IN struct _KDPC *Dpc, IN PVOID DeferredContext, IN PVOID SystemArgument1, IN PVOID SystemArgument2)

Additional Inherited Members
Protected Member Functions inherited from CUnknownImpl< IServiceGroup >
	CUnknownImpl ()
virtual	~CUnknownImpl ()

Detailed Description

Definition at line 29 of file service_group.cpp.

Constructor & Destructor Documentation

CServiceGroup()

CServiceGroup::CServiceGroup

(

IUnknown *

OuterUnknown

)

Definition at line 83 of file service_group.cpp.

{
    // initialize dpc
    KeInitializeDpc(&m_Dpc, IServiceGroupDpc, (PVOID)this);
 
    // set highest importance
    KeSetImportanceDpc(&m_Dpc, HighImportance);
 
    // initialize service group list lock
    KeInitializeSpinLock(&m_Lock);
 
    // initialize service group list
    InitializeListHead(&m_ServiceSinkHead);
}

~CServiceGroup()

virtual CServiceGroup::~CServiceGroup ( )

inlinevirtual

Definition at line 36 of file service_group.cpp.

{}

Member Function Documentation

QueryInterface()

NTSTATUS NTAPI CServiceGroup::QueryInterface	(	REFIID	InterfaceId,
		PVOID *	Interface
	)

Definition at line 56 of file service_group.cpp.

{
    UNICODE_STRING GuidString;
 
    if (IsEqualGUIDAligned(refiid, IID_IServiceGroup) ||
        IsEqualGUIDAligned(refiid, IID_IServiceSink) ||
        IsEqualGUIDAligned(refiid, IID_IUnknown))
    {
        *Output = PVOID(PSERVICEGROUP(this));
        PUNKNOWN(*Output)->AddRef();
        return STATUS_SUCCESS;
    }
 
    if (RtlStringFromGUID(refiid, &GuidString) == STATUS_SUCCESS)
    {
        DPRINT1("CServiceGroup::QueryInterface no interface!!! iface %S\n", GuidString.Buffer);
        RtlFreeUnicodeString(&GuidString);
    }
 
    return STATUS_UNSUCCESSFUL;
}

Friends And Related Function Documentation

IServiceGroupDpc

VOID NTAPI IServiceGroupDpc ( IN struct _KDPC *  Dpc, IN PVOID  DeferredContext, IN PVOID  SystemArgument1, IN PVOID  SystemArgument2  )

friend

Definition at line 226 of file service_group.cpp.

{
    PLIST_ENTRY CurEntry;
    PGROUP_ENTRY Entry;
    CServiceGroup * This = (CServiceGroup*)DeferredContext;
 
    // acquire service group list lock
    KeAcquireSpinLockAtDpcLevel(&This->m_Lock);
 
    // grab first entry
    CurEntry = This->m_ServiceSinkHead.Flink;
 
    // loop the list and call the attached service sink/group
    while (CurEntry != &This->m_ServiceSinkHead)
    {
        //grab current entry
        Entry = (PGROUP_ENTRY)CONTAINING_RECORD(CurEntry, GROUP_ENTRY, Entry);
 
        // call service sink/group
        Entry->pServiceSink->RequestService();
 
        // move to next entry
        CurEntry = CurEntry->Flink;
    }
 
    // release service group list lock
    KeReleaseSpinLockFromDpcLevel(&This->m_Lock);
}

Referenced by CServiceGroup().

Member Data Documentation

IMP_IServiceGroup

CServiceGroup::IMP_IServiceGroup

Definition at line 34 of file service_group.cpp.

m_Dpc

KDPC CServiceGroup::m_Dpc

protected

Definition at line 44 of file service_group.cpp.

Referenced by CServiceGroup().

m_Lock

KSPIN_LOCK CServiceGroup::m_Lock

protected

Definition at line 45 of file service_group.cpp.

Referenced by CServiceGroup().

m_ServiceSinkHead

LIST_ENTRY CServiceGroup::m_ServiceSinkHead

protected

Definition at line 40 of file service_group.cpp.

Referenced by CServiceGroup().

m_Timer

KTIMER CServiceGroup::m_Timer

protected

Definition at line 43 of file service_group.cpp.

m_TimerInitialized

BOOL CServiceGroup::m_TimerInitialized

protected

Definition at line 42 of file service_group.cpp.

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The documentation for this class was generated from the following file:

• drivers/wdm/audio/backpln/portcls/service_group.cpp