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//+-------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1996.
//
// File: srgtfact.cxx
//
// Contents: Class the implements the ISurrogate interface
//
//
// History: 21-May-96 t-AdamE Created
//
//--------------------------------------------------------------------------
#include <debnot.h>
#include "csrgt.hxx"
#include "srgtfact.hxx"
//+---------------------------------------------------------------------------
//
// Function: CSrgtMem::operator new
//
// Synopsis: uses ole's allocator to get blocks
//
// History: 10-30-96 t-Adame Created
//
//----------------------------------------------------------------------------
void* _CRTAPI1 CSrgtMem::operator new(size_t cbsize)
{
return CoTaskMemAlloc(cbsize);
}
//+---------------------------------------------------------------------------
//
// Function: CSrgtMem::operator delete
//
// Synopsis: uses ole's allocator to free blocks
//
// History: 10-30-96 t-Adame Created
//
//----------------------------------------------------------------------------
void _CRTAPI1 CSrgtMem::operator delete(void* pv)
{
CoTaskMemFree(pv);
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::CSurrogateFactory()
//
// Synopsis: constructor for CSurrogateFactory
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
CSurrogateFactory::CSurrogateFactory(REFCLSID clsid) :
_dwRegister(0),
_clsid(clsid),
_cref(0)
{}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::Register()
//
// Synopsis: destructor for CSurrogateFactory
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
HRESULT CSurrogateFactory::Register()
{
HRESULT hr;
if(FAILED(hr = CoRegisterClassObject(
_clsid,
(IUnknown*)(void*)this,
CLSCTX_LOCAL_SERVER,
REGCLS_SURROGATE,
&_dwRegister)))
{
return hr;
}
return S_OK;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::Revoke()
//
// Synopsis: revokes this class factory object
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
HRESULT CSurrogateFactory::Revoke()
{
return CoRevokeClassObject(_dwRegister);
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::QueryInterface
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
STDMETHODIMP CSurrogateFactory::QueryInterface(REFIID iid, LPVOID* ppv)
{
if(iid == IID_IUnknown)
{
*ppv = (void*)((IUnknown*)(void*)this);
AddRef();
return S_OK;
}
else if (iid == IID_IClassFactory)
{
*ppv = (void*)(IClassFactory*)this;
AddRef();
return S_OK;
}
else if (iid == IID_IMarshal)
{
*ppv = (void*)(IMarshal*)this;
AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::AddRef()
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
ULONG CSurrogateFactory::AddRef()
{
InterlockedIncrement((LPLONG)&_cref);
ULONG cref = _cref;
Win4Assert(_cref > 0);
return cref;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::Release()
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
ULONG CSurrogateFactory::Release()
{
Win4Assert(_cref > 0);
if(!(InterlockedDecrement((LPLONG)&_cref)))
{
delete this;
return 0;
}
ULONG cref = _cref;
return cref;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::CreateInstance
//
// Notes: This create instance does a CoGetClassObject to get the
// real class factory for this clsid (the class factory
// implemented in the dll). It then calls CreateInstance on that
// class factory
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
STDMETHODIMP CSurrogateFactory::CreateInstance(IUnknown* pUnkOuter, REFIID iid, void** ppv)
{
void* pcf;
HRESULT hr;
if(SUCCEEDED(hr = CoGetClassObject(
_clsid,
CLSCTX_INPROC_SERVER,
NULL,
IID_IClassFactory,
&pcf)))
{
hr = ((IClassFactory*)pcf)->CreateInstance(pUnkOuter, iid, ppv);
((IClassFactory*)pcf)->Release();
}
if(FAILED(hr))
{
// if we can't get the real class factory, the
// client won't be able to use it to create an instance
// of the class (the one in the dll), so now we
// close the surrogate if this is the only class in the
// process
CLibTable::_ptbLibs->EnterMonitor();
if(CLibTable::_ptbLibs->FSingleton())
{
CLibTable::_ptbLibs->LeaveMonitor();
CSurrogate::_pSurrogate->FreeSurrogate();
return hr;
}
CLibTable::_ptbLibs->LeaveMonitor();
}
return hr;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::LockServer()
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
STDMETHODIMP CSurrogateFactory::LockServer(BOOL fLock)
{
return S_OK;
}
// REVIEW: currently, the only IMarshal methods we implement are
// MarshalInterface and GetUnMarshalClass. If any other method on our
// IMarshal is called, we assert and return E_NOTIMPL.
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::GetUnMarshalClass
//
// Notes: This function returns CLSID_StdMarshal through the pClsid
// parameter so that COM will use standard marshalling on
// this interface
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
STDMETHODIMP CSurrogateFactory::GetUnmarshalClass(
REFIID riid,
void *pv,
DWORD dwDestContext,
void *pvDestContext,
DWORD mshlflags,
CLSID *pClsid)
{
*pClsid = CLSID_StdMarshal;
return S_OK;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::GetMarshalSizeMax
//
// Notes: This function does nothing at this time.
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
//REVIEW: do we need to give this method a real implementation?
STDMETHODIMP CSurrogateFactory::GetMarshalSizeMax(
REFIID riid,
void *pv,
DWORD dwDestContext,
void *pvDestContext,
DWORD mshlflags,
DWORD *pSize)
{
Win4Assert(FALSE);
return E_NOTIMPL;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::MarshalInterface
//
// Notes: Since this class factory is simply a stand-in for the dll's
// class factory, we need to get the dll's class factory and
// marshal it instead of this class factory for CoGetClassObject.
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
STDMETHODIMP CSurrogateFactory::MarshalInterface(
IStream *pStm,
REFIID riid,
void *pv,
DWORD dwDestContext,
void *pvDestContext,
DWORD mshlflags)
{
void* pCF = NULL;
HRESULT hr;
// get the real class factory object with the
// requested interface
if(SUCCEEDED(hr = CoGetClassObject(
_clsid,
CLSCTX_INPROC_SERVER,
NULL,
riid,
&pCF)))
{
hr = CoMarshalInterface(
pStm,
riid,
(IUnknown*)pCF,
dwDestContext,
pvDestContext,
mshlflags);
((IUnknown*)pCF)->Release();
}
if(FAILED(hr))
{
// if we can't marshal the real class factory, the
// client won't be able to use it to create an instance
// of the real class (the one in the dll), so now we
// close the surrogate if this is the only class in the
// process
CLibTable::_ptbLibs->EnterMonitor();
if(CLibTable::_ptbLibs->FSingleton())
{
CLibTable::_ptbLibs->LeaveMonitor();
CSurrogate::_pSurrogate->FreeSurrogate();
return hr;
}
CLibTable::_ptbLibs->LeaveMonitor();
}
return hr;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::UnMarshalInterface
//
// Notes: This function does nothing at this time.
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
//REVIEW: do we need to give this method a real implementation?
STDMETHODIMP CSurrogateFactory::UnmarshalInterface(IStream *pStm,REFIID riid,void **ppv)
{
Win4Assert(FALSE);
return E_NOTIMPL;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::GetUnMarshalClass
//
// Notes: This function does nothing at this time.
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
//REVIEW: do we need to give this method a real implementation?
STDMETHODIMP CSurrogateFactory::ReleaseMarshalData(IStream *pStm)
{
Win4Assert(FALSE);
return E_NOTIMPL;
}
//+---------------------------------------------------------------------------
//
// Function: CSurrogateFactory::DisconnectObject
//
// History: 6-21-96 t-Adame Created
//
//----------------------------------------------------------------------------
// REVIEW: should be ok to return S_OK since we're not doing anything fancy?
STDMETHODIMP CSurrogateFactory::DisconnectObject(DWORD dwReserved)
{
return S_OK;
}
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