finished documenting objhelp_enumgeneric and implementing the IConnectionPointContainer interface on the heap
This commit is contained in:
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c728482744
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6efccb8d19
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@ -47,6 +47,7 @@
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typedef struct tagENUMGENERICDATA {
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typedef struct tagENUMGENERICDATA {
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UINT32 uiRefCount; /* reference count */
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UINT32 uiRefCount; /* reference count */
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REFIID riidObjects; /* IID of underlying objects */
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UINT32 nObjects; /* count of IUnknown pointers */
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UINT32 nObjects; /* count of IUnknown pointers */
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PUNKNOWN rgObjects[0]; /* array of IUnknown pointers */
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PUNKNOWN rgObjects[0]; /* array of IUnknown pointers */
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} ENUMGENERICDATA, *PENUMGENERICDATA;
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} ENUMGENERICDATA, *PENUMGENERICDATA;
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@ -65,9 +66,9 @@ typedef struct tagENUMGENERIC {
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*---------------------------------------------------------------------------------------------
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*---------------------------------------------------------------------------------------------
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*/
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*/
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extern PENUMGENERICDATA _ObjHlpAllocateEnumGenericData(IMalloc *pAllocator, UINT32 nCapacity);
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extern PENUMGENERICDATA _ObjHlpAllocateEnumGenericData(IMalloc *pAllocator, REFIID riidObjects, UINT32 nCapacity);
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extern void _ObjHlpAddToEnumGenericData(PENUMGENERICDATA pegd, IUnknown *pUnk);
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extern void _ObjHlpAddToEnumGenericData(PENUMGENERICDATA pegd, IUnknown *pUnk);
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extern void _ObjHlpDiscardEnumGenericData(PENUMGENERICDATA pecd);
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extern void _ObjHlpDiscardEnumGenericData(PENUMGENERICDATA pegd);
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extern PENUMGENERIC _ObjHlpAllocateEnumGeneric(IMalloc *pAllocator, REFIID riidActual, PENUMGENERICDATA pegd,
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extern PENUMGENERIC _ObjHlpAllocateEnumGeneric(IMalloc *pAllocator, REFIID riidActual, PENUMGENERICDATA pegd,
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UINT32 nCurrent);
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UINT32 nCurrent);
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@ -40,6 +40,7 @@
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#include <comrogue/heap.h>
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#include <comrogue/heap.h>
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#include <comrogue/internals/seg.h>
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#include <comrogue/internals/seg.h>
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#include "heap_internals.h"
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#include "heap_internals.h"
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#include "enumgeneric.h"
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#define PHDFLAGS_DELETING 0x80000000 /* deleting the heap */
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#define PHDFLAGS_DELETING 0x80000000 /* deleting the heap */
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@ -221,13 +222,64 @@ static UINT32 cpc_Release(IUnknown *pThis)
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return malloc_Release((IUnknown *)HeapDataPtr(pThis));
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return malloc_Release((IUnknown *)HeapDataPtr(pThis));
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}
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}
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/*
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* Creates an enumerator object to iterate through all the connection points in this container.
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*
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* Parameters:
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* - pThis = Pointer to the ConnectionPointContainer interface in the heap data object.
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* - ppEnum = Pointer to a variable to receive a new reference to IEnumConnectionPoints.
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*
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* Returns:
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* - S_OK = Enumerator created successfully; pointer to it in *ppEnum.
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* - E_OUTOFMEMORY = Unable to allocate the enumerator; *ppEnum is NULL.
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* - E_POINTER = The ppEnum pointer is not valid.
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*/
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static HRESULT cpc_EnumConnectionPoints(IConnectionPointContainer *pThis, IEnumConnectionPoints **ppEnum)
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static HRESULT cpc_EnumConnectionPoints(IConnectionPointContainer *pThis, IEnumConnectionPoints **ppEnum)
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{
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{
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PHEAPDATA phd = (PHEAPDATA)HeapDataPtr(pThis); /* pointer to heap data */
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PHEAPDATA phd = (PHEAPDATA)HeapDataPtr(pThis); /* pointer to heap data */
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PENUMGENERICDATA pegd; /* pointer to data block */
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PENUMGENERIC peg; /* pointer to enumerator */
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return E_NOTIMPL; /* TODO */
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if (!ppEnum)
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return E_POINTER;
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*ppEnum = NULL;
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/* Allocate the data block. */
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pegd = _ObjHlpAllocateEnumGenericData((IMalloc *)phd, &IID_IConnectionPoint, 2);
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if (!pegd)
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return E_OUTOFMEMORY;
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/* Build the data block. */
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_ObjHlpAddToEnumGenericData(pegd, (IUnknown *)(&(phd->fcpMallocSpy)));
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_ObjHlpAddToEnumGenericData(pegd, (IUnknown *)(&(phd->fcpSequentialStream)));
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/* Allocate the enumerator. */
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peg = _ObjHlpAllocateEnumGeneric((IMalloc *)phd, &IID_IEnumConnectionPoints, pegd, 0);
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if (peg)
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{
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IUnknown_QueryInterface((IUnknown *)peg, &IID_IEnumConnectionPoints, (PPVOID)ppEnum);
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return S_OK;
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}
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/* Enumerator allocation failed?!? */
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_ObjHlpDiscardEnumGenericData(pegd);
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malloc_Free((IMalloc *)phd, pegd);
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return E_OUTOFMEMORY;
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}
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}
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/*
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* Returns a reference to the IConnectionPoint interface corresponding to a specific outgoing IID.
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*
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* Parameters:
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* - pThis = Pointer to the ConnectionPointContainer interface in the heap data object.
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* - riid = IID of the outgoing interface to get the connection point for.
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* - ppCP = Pointer to a variable to receive the IConnectionPoint interface pointer.
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*
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* Returns:
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* - S_OK = Found connection point; interface pointer is in *ppCP.
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* - E_POINTER = The ppCP pointer is not valid.
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* - CONNECT_E_NOCONNECTION = The object does not support the interface indicated by riid. *ppCP is NULL.
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*/
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static HRESULT cpc_FindConnectionPoint(IConnectionPointContainer *pThis, REFIID riid, IConnectionPoint **ppCP)
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static HRESULT cpc_FindConnectionPoint(IConnectionPointContainer *pThis, REFIID riid, IConnectionPoint **ppCP)
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{
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{
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PHEAPDATA phd = (PHEAPDATA)HeapDataPtr(pThis); /* pointer to heap data */
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PHEAPDATA phd = (PHEAPDATA)HeapDataPtr(pThis); /* pointer to heap data */
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@ -36,6 +36,7 @@
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#include <comrogue/connpoint.h>
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#include <comrogue/connpoint.h>
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#include <comrogue/allocator.h>
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#include <comrogue/allocator.h>
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#include <comrogue/objhelp.h>
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#include <comrogue/objhelp.h>
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#include <comrogue/internals/seg.h>
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#include "enumconn.h"
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#include "enumconn.h"
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/*-------------------------------------------
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/*-------------------------------------------
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#include <comrogue/allocator.h>
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#include <comrogue/allocator.h>
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#include <comrogue/objhelp.h>
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#include <comrogue/objhelp.h>
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#include <comrogue/stdobj.h>
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#include <comrogue/stdobj.h>
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#include <comrogue/internals/seg.h>
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#include "enumgeneric.h"
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#include "enumgeneric.h"
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/*---------------------------------------
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/*---------------------------------------
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@ -43,6 +44,22 @@
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*---------------------------------------
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*---------------------------------------
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*/
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*/
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/*
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* Retrieves pointers to the supported interfaces on an object. Any pointer returned by this method
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* has AddRef called on it before it returns.
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*
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* Parameters:
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* - pThis = Base interface pointer.
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* - riid = The identifier of the interface being requested.
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* - ppvObject = Address of a pointer variable that receives the interface pointer requested by riid.
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* On return, *ppvObject contains the requested interface pointer, or NULL if the interface
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* is not supported.
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*
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* Returns:
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* - S_OK = If the interface is supported. *ppvObject contains the pointer to the interface.
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* - E_NOINTERFACE = If the interface is not supported. *ppvObject contains NULL.
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* - E_POINTER = If ppvObject is NULL.
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*/
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static HRESULT enumGeneric_QueryInterface(IUnknown *pThis, REFIID riid, PPVOID ppvObject)
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static HRESULT enumGeneric_QueryInterface(IUnknown *pThis, REFIID riid, PPVOID ppvObject)
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{
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{
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PENUMGENERIC peg = (PENUMGENERIC)pThis;
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PENUMGENERIC peg = (PENUMGENERIC)pThis;
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return E_NOINTERFACE;
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return E_NOINTERFACE;
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}
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}
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/*
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* Adds a reference to the enumerator object.
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*
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* Parameters:
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* - pThis = Pointer to the enumerator object (actually its IEnumUnknown interface pointer).
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*
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* Returns:
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* The new reference count on the object.
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*/
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static UINT32 enumGeneric_AddRef(IUnknown *pThis)
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static UINT32 enumGeneric_AddRef(IUnknown *pThis)
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{
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{
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return ++(((PENUMGENERIC)pThis)->uiRefCount);
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return ++(((PENUMGENERIC)pThis)->uiRefCount);
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}
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}
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/*
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* Removes a reference from the enumerator object. The object is freed when its reference count reaches 0.
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*
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* Parameters:
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* - pThis = Pointer to the enumerator object (actually its IEnumUnknown interface pointer).
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*
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* Returns:
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* The new reference count on the object.
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*/
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static UINT32 enumGeneric_Release(IUnknown *pThis)
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static UINT32 enumGeneric_Release(IUnknown *pThis)
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{
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{
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to actual data block */
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to actual data block */
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return rc;
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return rc;
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}
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}
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/*
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* Retrieves the next number of interface pointers in the enumeration sequence.
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*
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* Parameters:
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* - pThis = Pointer to the enumerator object (actually its IEnumUnknown interface pointer).
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* - celt = Number of interface pointers to be retrieved. If there are more than this many interface pointers
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* in the enumeration sequence, this many are returned.
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* - rgelt = Array of enumerated items which will be filled in by this function. Note that the caller is
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* responsible for releasing all interface pointers returned as a result of this call.
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* - pceltFetched = Pointer to a variable which will receive the number of interface pointers retrieved. This
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* value will always be less than or equal to celt.
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*
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* Returns:
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* - S_OK = All the interface pointers requested were retrieved. *pceltFetched is equal to celt.
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* - S_FALSE = Not all the interface pointers requested could be retrieved. *pceltFetched is less than celt.
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* - Other = An error result.
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*/
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static HRESULT enumGeneric_Next(IEnumUnknown *pThis, UINT32 celt, IUnknown **rgelt, UINT32 *pceltFetched)
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static HRESULT enumGeneric_Next(IEnumUnknown *pThis, UINT32 celt, IUnknown **rgelt, UINT32 *pceltFetched)
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{
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{
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to data block */
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to data block */
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@ -110,15 +162,29 @@ static HRESULT enumGeneric_Next(IEnumUnknown *pThis, UINT32 celt, IUnknown **rge
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/* get number of items to fetch */
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/* get number of items to fetch */
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*pceltFetched = intMin(peg->pPayload->nObjects - peg->nCurrent, celt);
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*pceltFetched = intMin(peg->pPayload->nObjects - peg->nCurrent, celt);
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for (i = 0; i < *pceltFetched; i++)
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for (i = 0; i < *pceltFetched; i++)
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{ /* fetch the items */
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{ /* fetch the items - note we QI for the actual interface we're supposed to be enumerating for */
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rgelt[i] = peg->pPayload->rgObjects[i + peg->nCurrent];
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if (FAILED(IUnknown_QueryInterface(peg->pPayload->rgObjects[i + peg->nCurrent], peg->pPayload->riidObjects,
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IUnknown_AddRef(rgelt[i]);
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(PPVOID)(&(rgelt[i])))))
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return E_UNEXPECTED;
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}
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}
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peg->nCurrent += *pceltFetched; /* advance pointer */
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peg->nCurrent += *pceltFetched; /* advance pointer */
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return (*pceltFetched == celt) ? S_OK : S_FALSE;
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return (*pceltFetched == celt) ? S_OK : S_FALSE;
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}
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}
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/*
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* Skips over the next number of interface pointers in the enumeration sequence.
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*
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* Parameters:
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* - pThis = Pointer to the enumerator object (actually its IEnumUnknown interface pointer).
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* - celt = Number of elements to be skipped. If there are fewer than this many elements
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* in the enumeration sequence, we skip straight to the end.
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*
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* Returns:
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* - S_OK = We were able to skip over all the specified items.
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* - S_FALSE = We were not able to skip over all the specified items. The current position of the enumeration
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* is at the end of the sequence.
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*/
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static HRESULT enumGeneric_Skip(IEnumUnknown *pThis, UINT32 celt)
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static HRESULT enumGeneric_Skip(IEnumUnknown *pThis, UINT32 celt)
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{
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{
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to data block */
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to data block */
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return rc;
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return rc;
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}
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}
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/*
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* Resets the enumeration sequence to the beginning.
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*
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* Parameters:
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* - pThis = Pointer to the enumerator object (actually its IEnumUnknown interface pointer).
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*
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* Returns:
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* S_OK.
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*/
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static HRESULT enumGeneric_Reset(IEnumUnknown *pThis)
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static HRESULT enumGeneric_Reset(IEnumUnknown *pThis)
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{
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{
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((PENUMGENERIC)pThis)->nCurrent = 0;
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((PENUMGENERIC)pThis)->nCurrent = 0;
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return S_OK;
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return S_OK;
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}
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}
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/*
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* Creates a new enumerator with the same state as the current one.
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*
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* Parameters:
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* - pThis = Pointer to the enumerator object (actually its IEnumUnknown interface pointer).
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* - ppEnum = Pointer to variable to receive the new enumerator object. The caller is responsible for releasing
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* this pointer.
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*
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* Returns:
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* - S_OK = Success.
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* - E_INVALIDARG = The pointer argument is not valid.
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* - E_OUTOFMEMORY = The memory for a new enumerator could not be allocated.
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*/
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static HRESULT enumGeneric_Clone(IEnumUnknown *pThis, IEnumUnknown **ppEnum)
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static HRESULT enumGeneric_Clone(IEnumUnknown *pThis, IEnumUnknown **ppEnum)
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{
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{
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to data block */
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register PENUMGENERIC peg = (PENUMGENERIC)pThis; /* pointer to data block */
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return S_OK;
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return S_OK;
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}
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}
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/* VTable for the IEnumUnknown interface. */
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static const SEG_RODATA struct IEnumUnknownVTable vtblEnum =
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static const SEG_RODATA struct IEnumUnknownVTable vtblEnum =
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{
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{
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.QueryInterface = enumGeneric_QueryInterface,
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.QueryInterface = enumGeneric_QueryInterface,
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@ -170,7 +259,20 @@ static const SEG_RODATA struct IEnumUnknownVTable vtblEnum =
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*---------------------------------
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*---------------------------------
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*/
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*/
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PENUMGENERICDATA _ObjHlpAllocateEnumGenericData(IMalloc *pAllocator, UINT32 nCapacity)
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/*
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* Allocate the "inner" connection data object for an enumerator.
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*
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* Parameters:
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* - pAllocator = Allocator to use to allocate the memory.
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* - riidObjects = IID that the objects stored in this block will actually have. NULL is interpreted
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* as the IID of IUnknown.
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* - nCapacity = Number of slots to allocate for the object pointers.
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*
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* Returns:
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* - NULL = The data object could not be allocated.
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* - Other = Pointer to the new data object. Its reference count is 0 and it contains no elements.
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*/
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PENUMGENERICDATA _ObjHlpAllocateEnumGenericData(IMalloc *pAllocator, REFIID riidObjects, UINT32 nCapacity)
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{
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{
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register PENUMGENERICDATA rc; /* return from this function */
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register PENUMGENERICDATA rc; /* return from this function */
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register SIZE_T cbReturn = sizeof(ENUMGENERICDATA) + (nCapacity * sizeof(PUNKNOWN)); /* bytes to allocate */
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register SIZE_T cbReturn = sizeof(ENUMGENERICDATA) + (nCapacity * sizeof(PUNKNOWN)); /* bytes to allocate */
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{
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{
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StrSetMem(rc, 0, cbReturn);
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StrSetMem(rc, 0, cbReturn);
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rc->uiRefCount = 0;
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rc->uiRefCount = 0;
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rc->riidObjects = riidObjects ? riidObjects : &IID_IUnknown;
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rc->nObjects = 0;
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rc->nObjects = 0;
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}
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}
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return rc;
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return rc;
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}
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}
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/*
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* Add an element to the specified "inner" object reference data object. Used when building the object.
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*
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* Parameters:
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* - pegd = Pointer to the reference data object.
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* - pUnk = IUnknown pointer to add to the "next" slot. A reference is added to this pointer.
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*
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* Returns:
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* Nothing.
|
||||||
|
*/
|
||||||
void _ObjHlpAddToEnumGenericData(PENUMGENERICDATA pegd, IUnknown *pUnk)
|
void _ObjHlpAddToEnumGenericData(PENUMGENERICDATA pegd, IUnknown *pUnk)
|
||||||
{
|
{
|
||||||
pegd->rgObjects[pegd->nObjects] = pUnk;
|
pegd->rgObjects[pegd->nObjects] = pUnk;
|
||||||
|
@ -193,6 +305,16 @@ void _ObjHlpAddToEnumGenericData(PENUMGENERICDATA pegd, IUnknown *pUnk)
|
||||||
pegd->nObjects++;
|
pegd->nObjects++;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Discards the contents of an "inner" object reference data object by releasing all the interface pointers
|
||||||
|
* it contains.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* - pegd = Pointer to the reference data object.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* Nothing.
|
||||||
|
*/
|
||||||
void _ObjHlpDiscardEnumGenericData(PENUMGENERICDATA pegd)
|
void _ObjHlpDiscardEnumGenericData(PENUMGENERICDATA pegd)
|
||||||
{
|
{
|
||||||
register UINT32 i; /* loop counter */
|
register UINT32 i; /* loop counter */
|
||||||
|
@ -201,6 +323,20 @@ void _ObjHlpDiscardEnumGenericData(PENUMGENERICDATA pegd)
|
||||||
IUnknown_Release(pegd->rgObjects[i]);
|
IUnknown_Release(pegd->rgObjects[i]);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Allocates a new "enumerator" data object.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* - pAllocator = Allocator to use to allocate the memory.
|
||||||
|
* - riidActual = IID that this enumerator will actually support, in addition to IUnknown. NULL is
|
||||||
|
* interpreted as IID_IEnumUnknown.
|
||||||
|
* - pegd = Pointer to the "inner" reference data object to be used.
|
||||||
|
* - nCurrent = Value to set the "current" element pointer to.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* - NULL = The enumerator object could not be allocated.
|
||||||
|
* - Other = Pointer to the new enumerator object. Its reference count is 0.
|
||||||
|
*/
|
||||||
PENUMGENERIC _ObjHlpAllocateEnumGeneric(IMalloc *pAllocator, REFIID riidActual, PENUMGENERICDATA pegd,
|
PENUMGENERIC _ObjHlpAllocateEnumGeneric(IMalloc *pAllocator, REFIID riidActual, PENUMGENERICDATA pegd,
|
||||||
UINT32 nCurrent)
|
UINT32 nCurrent)
|
||||||
{
|
{
|
||||||
|
@ -211,7 +347,7 @@ PENUMGENERIC _ObjHlpAllocateEnumGeneric(IMalloc *pAllocator, REFIID riidActual,
|
||||||
{ /* initialize all the fields */
|
{ /* initialize all the fields */
|
||||||
rc->enumUnknown.pVTable = &vtblEnum;
|
rc->enumUnknown.pVTable = &vtblEnum;
|
||||||
rc->uiRefCount = 0;
|
rc->uiRefCount = 0;
|
||||||
rc->riidActual = riidActual;
|
rc->riidActual = riidActual ? riidActual : &IID_IEnumUnknown;
|
||||||
rc->nCurrent = nCurrent;
|
rc->nCurrent = nCurrent;
|
||||||
rc->pPayload = pegd;
|
rc->pPayload = pegd;
|
||||||
pegd->uiRefCount++;
|
pegd->uiRefCount++;
|
||||||
|
|
Loading…
Reference in New Issue
Block a user