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/* |
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ReactOS Kernel-Mode COM |
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IUnknown implementations |
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|
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This file is in the public domain. |
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|
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AUTHORS |
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Andrew Greenwood |
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*/ |
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|
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#ifndef STDUNK_H |
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#define STDUNK_H |
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|
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#include <punknown.h> |
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|
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/* =============================================================== |
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INonDelegatingUnknown interface |
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*/ |
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|
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DECLARE_INTERFACE(INonDelegatingUnknown) |
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{ |
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STDMETHOD_(NTSTATUS, NonDelegatingQueryInterface)( THIS_ |
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IN REFIID, |
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OUT PVOID*) PURE; |
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|
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STDMETHOD_(ULONG, NonDelegatingAddRef)( THIS ) PURE; |
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STDMETHOD_(ULONG, NonDelegatingRelease)( THIS ) PURE; |
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}; |
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|
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typedef INonDelegatingUnknown *PNONDELEGATINGUNKNOWN; |
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|
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|
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/* =============================================================== |
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CUnknown declaration / definition |
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|
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There are 2 variants for this, and I'm not sure if the C |
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version is correct. |
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*/ |
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|
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#ifdef __cplusplus |
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|
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class CUnknown : public INonDelegatingUnknown |
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{ |
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private : |
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LONG m_ref_count; |
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PUNKNOWN m_outer_unknown; |
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|
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public : |
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/* CUnknown */ |
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CUnknown(PUNKNOWN pUnknownOuter); |
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virtual ~CUnknown(); |
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|
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PUNKNOWN GetOuterUnknown() |
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{ return m_outer_unknown; } |
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|
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/* INonDelegatingUnknown */ |
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STDMETHODIMP_(ULONG) NonDelegatingAddRef(); |
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STDMETHODIMP_(ULONG) NonDelegatingRelease(); |
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|
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STDMETHODIMP_(NTSTATUS) NonDelegatingQueryInterface( |
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REFIID rIID, |
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PVOID* ppVoid); |
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}; |
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|
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#define DECLARE_STD_UNKNOWN() \ |
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STDMETHODIMP_(NTSTATUS) NonDelegatingQueryInterface( \ |
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REFIID iid, \ |
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PVOID* ppvObject); \ |
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\ |
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STDMETHODIMP_(NTSTATUS) QueryInterface( \ |
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REFIID riid, \ |
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void** ppv) \ |
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{ \ |
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return GetOuterUnknown()->QueryInterface(riid, ppv); \ |
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} \ |
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\ |
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STDMETHODIMP_(ULONG) AddRef() \ |
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{ \ |
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return GetOuterUnknown()->AddRef(); \ |
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} \ |
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\ |
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STDMETHODIMP_(ULONG) Release() \ |
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{ \ |
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return GetOuterUnknown()->Release(); \ |
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} |
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|
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#define DEFINE_STD_CONSTRUCTOR(classname) \ |
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classname(PUNKNOWN outer_unknown) \ |
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: CUnknown(outer_unknown) \ |
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{ } |
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|
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#else /* Not C++ - this is probably very buggy... */ |
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|
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NTSTATUS |
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STDMETHODCALLTYPE |
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Unknown_QueryInterface( |
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IUnknown* this, |
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IN REFIID refiid, |
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OUT PVOID* output); |
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|
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ULONG |
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STDMETHODCALLTYPE |
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Unknown_AddRef( |
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IUnknown* unknown_this); |
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|
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ULONG |
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STDMETHODCALLTYPE |
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Unknown_Release( |
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IUnknown* unknown_this); |
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|
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typedef struct CUnknown |
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{ |
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__GNU_EXTENSION union |
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{ |
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IUnknown IUnknown; |
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INonDelegatingUnknown INonDelegatingUnknown; |
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}; |
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|
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LONG m_ref_count; |
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PUNKNOWN m_outer_unknown; |
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} CUnknown; |
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|
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#endif /* __cplusplus */ |
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|
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|
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|
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#ifdef __cplusplus |
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|
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|
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/* =============================================================== |
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Construction helpers |
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*/ |
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|
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#define QICAST(typename) \ |
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PVOID( (typename) (this) ) |
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|
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#define QICASTUNKNOWN(typename) \ |
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PVOID( PUNKNOWN( (typename) (this) ) ) |
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|
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#define STD_CREATE_BODY_WITH_TAG_(classname, unknown, outer_unknown, pool_type, tag, base) \ |
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classname *new_ptr = new(pool_type, tag) classname(outer_unknown); \ |
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\ |
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if ( ! new_ptr ) \ |
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return STATUS_INSUFFICIENT_RESOURCES; \ |
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\ |
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*unknown = PUNKNOWN((base)(new_ptr)); \ |
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(*unknown)->AddRef(); \ |
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return STATUS_SUCCESS |
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|
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#define STD_CREATE_BODY_WITH_TAG(classname, unknown, outer_unknown, pool_type, tag, base) \ |
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STD_CREATE_BODY_WITH_TAG_(classname, unknown, outer_unknown, pool_type, tag, PUNKNOWN) |
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|
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#define STD_CREATE_BODY_(classname, unknown, outer_unknown, pool_type, base) \ |
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STD_CREATE_BODY_WITH_TAG_(classname, unknown, outer_unknown, pool_type, 'rCcP', base) |
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|
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#define STD_CREATE_BODY(classname, unknown, outer_unknown, pool_type) \ |
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STD_CREATE_BODY_(classname, unknown, outer_unknown, pool_type, PUNKNOWN) |
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|
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|
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/* =============================================================== |
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Custom "new" and "delete" C++ operators |
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*/ |
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|
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#ifndef _NEW_DELETE_OPERATORS_ |
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#define _NEW_DELETE_OPERATORS_ |
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|
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inline PVOID |
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KCOM_New( |
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size_t size, |
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POOL_TYPE pool_type, |
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ULONG tag) |
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{ |
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PVOID result; |
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|
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result = ExAllocatePoolWithTag(pool_type, size, tag); |
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|
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if ( result ) |
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RtlZeroMemory(result, size); |
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|
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return result; |
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} |
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|
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inline PVOID |
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operator new ( |
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size_t size, |
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POOL_TYPE pool_type) |
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{ |
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return KCOM_New(size, pool_type, 'wNcP'); |
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} |
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|
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inline PVOID |
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operator new ( |
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size_t size, |
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POOL_TYPE pool_type, |
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ULONG tag) |
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{ |
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return KCOM_New(size, pool_type, tag); |
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} |
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|
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inline void __cdecl |
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operator delete( |
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PVOID ptr) |
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{ |
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ExFreePool(ptr); |
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} |
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|
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#endif /* ALLOCATION_OPERATORS_DEFINED */ |
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|
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|
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#else /* Being compiled with C */ |
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|
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|
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#endif /* __cplusplus */ |
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|
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#endif /* include guard */ |
