115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/*
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* Copyright 2020 Alistair Leslie-Hughes
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define COBJMACROS
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "objbase.h"
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#include "rpcproxy.h"
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#include "msdasc.h"
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#include "wine/heap.h"
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#include "wine/debug.h"
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#include "msdasql.h"
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#include "msdasql_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msdasql);
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struct msdasql_session
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{
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IUnknown session_iface;
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LONG refs;
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};
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static inline struct msdasql_session *impl_from_IUnknown( IUnknown *iface )
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{
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return CONTAINING_RECORD( iface, struct msdasql_session, session_iface );
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}
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static HRESULT WINAPI session_QueryInterface(IUnknown *iface, REFIID riid, void **ppv)
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{
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struct msdasql_session *session = impl_from_IUnknown( iface );
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TRACE( "%p, %s, %p\n", iface, debugstr_guid(riid), ppv );
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*ppv = NULL;
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if(IsEqualGUID(&IID_IUnknown, riid))
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{
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TRACE("(%p)->(IID_IUnknown %p)\n", iface, ppv);
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*ppv = &session->session_iface;
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}
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if(*ppv)
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{
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IUnknown_AddRef((IUnknown*)*ppv);
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return S_OK;
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}
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FIXME("(%p)->(%s %p)\n", iface, debugstr_guid(riid), ppv);
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return E_NOINTERFACE;
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}
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static ULONG WINAPI session_AddRef(IUnknown *iface)
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{
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struct msdasql_session *session = impl_from_IUnknown( iface );
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LONG refs = InterlockedIncrement( &session->refs );
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TRACE( "%p new refcount %d\n", session, refs );
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return refs;
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}
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static ULONG WINAPI session_Release(IUnknown *iface)
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{
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struct msdasql_session *session = impl_from_IUnknown( iface );
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LONG refs = InterlockedDecrement( &session->refs );
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TRACE( "%p new refcount %d\n", session, refs );
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if (!refs)
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{
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TRACE( "destroying %p\n", session );
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heap_free( session );
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}
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return refs;
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}
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static const IUnknownVtbl unkfactoryVtbl =
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{
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session_QueryInterface,
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session_AddRef,
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session_Release,
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};
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HRESULT create_db_session(REFIID riid, void **unk)
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{
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struct msdasql_session *session;
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HRESULT hr;
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session = heap_alloc(sizeof(*session));
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if (!session)
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return E_OUTOFMEMORY;
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session->session_iface.lpVtbl = &unkfactoryVtbl;
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session->refs = 1;
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hr = IUnknown_QueryInterface(&session->session_iface, riid, unk);
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IUnknown_Release(&session->session_iface);
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return hr;
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}
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