2 * free threaded marshaller
4 * Copyright 2002 Juergen Schmied
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
35 #include "wine/debug.h"
37 #include "compobj_private.h"
39 WINE_DEFAULT_DEBUG_CHANNEL(ole);
41 typedef struct _FTMarshalImpl {
42 const IUnknownVtbl *lpVtbl;
44 const IMarshalVtbl *lpvtblFTM;
49 #define _IFTMUnknown_(This) ((IUnknown*)&(This)->lpVtbl)
50 #define _IFTMarshal_(This) (&(This)->lpvtblFTM)
52 static inline FTMarshalImpl *impl_from_IMarshal( IMarshal *iface )
54 return (FTMarshalImpl *)((char*)iface - FIELD_OFFSET(FTMarshalImpl, lpvtblFTM));
57 /* inner IUnknown to handle aggregation */
59 IiFTMUnknown_fnQueryInterface (IUnknown * iface, REFIID riid, LPVOID * ppv)
62 FTMarshalImpl *This = (FTMarshalImpl *)iface;
67 if (IsEqualIID (&IID_IUnknown, riid))
68 *ppv = _IFTMUnknown_ (This);
69 else if (IsEqualIID (&IID_IMarshal, riid))
70 *ppv = _IFTMarshal_ (This);
72 FIXME ("No interface for %s.\n", debugstr_guid (riid));
75 IUnknown_AddRef ((IUnknown *) * ppv);
79 static ULONG WINAPI IiFTMUnknown_fnAddRef (IUnknown * iface)
82 FTMarshalImpl *This = (FTMarshalImpl *)iface;
85 return InterlockedIncrement (&This->ref);
88 static ULONG WINAPI IiFTMUnknown_fnRelease (IUnknown * iface)
91 FTMarshalImpl *This = (FTMarshalImpl *)iface;
94 if (InterlockedDecrement (&This->ref))
96 HeapFree (GetProcessHeap (), 0, This);
100 static const IUnknownVtbl iunkvt =
102 IiFTMUnknown_fnQueryInterface,
103 IiFTMUnknown_fnAddRef,
104 IiFTMUnknown_fnRelease
107 static HRESULT WINAPI
108 FTMarshalImpl_QueryInterface (LPMARSHAL iface, REFIID riid, LPVOID * ppv)
111 FTMarshalImpl *This = impl_from_IMarshal(iface);
113 TRACE ("(%p)->(%s,%p)\n", This, debugstr_guid (riid), ppv);
114 return IUnknown_QueryInterface (This->pUnkOuter, riid, ppv);
118 FTMarshalImpl_AddRef (LPMARSHAL iface)
121 FTMarshalImpl *This = impl_from_IMarshal(iface);
124 return IUnknown_AddRef (This->pUnkOuter);
128 FTMarshalImpl_Release (LPMARSHAL iface)
131 FTMarshalImpl *This = impl_from_IMarshal(iface);
134 return IUnknown_Release (This->pUnkOuter);
137 static HRESULT WINAPI
138 FTMarshalImpl_GetUnmarshalClass (LPMARSHAL iface, REFIID riid, void *pv, DWORD dwDestContext,
139 void *pvDestContext, DWORD mshlflags, CLSID * pCid)
141 TRACE("(%s, %p, 0x%x, %p, 0x%x, %p)\n", debugstr_guid(riid), pv,
142 dwDestContext, pvDestContext, mshlflags, pCid);
143 if (dwDestContext == MSHCTX_INPROC || dwDestContext == MSHCTX_CROSSCTX)
144 *pCid = CLSID_InProcFreeMarshaler;
146 *pCid = CLSID_DfMarshal;
150 static HRESULT WINAPI
151 FTMarshalImpl_GetMarshalSizeMax (LPMARSHAL iface, REFIID riid, void *pv, DWORD dwDestContext,
152 void *pvDestContext, DWORD mshlflags, DWORD * pSize)
155 IMarshal *pMarshal = NULL;
158 TRACE("(%s, %p, 0x%x, %p, 0x%x, %p)\n", debugstr_guid(riid), pv,
159 dwDestContext, pvDestContext, mshlflags, pSize);
161 /* if the marshalling happens inside the same process the interface pointer is
162 copied between the apartments */
163 if (dwDestContext == MSHCTX_INPROC || dwDestContext == MSHCTX_CROSSCTX) {
164 *pSize = sizeof (mshlflags) + sizeof (pv) + sizeof (DWORD) + sizeof (GUID);
168 /* use the standard marshaller to handle all other cases */
169 CoGetStandardMarshal (riid, pv, dwDestContext, pvDestContext, mshlflags, &pMarshal);
170 hres = IMarshal_GetMarshalSizeMax (pMarshal, riid, pv, dwDestContext, pvDestContext, mshlflags, pSize);
171 IMarshal_Release (pMarshal);
175 static HRESULT WINAPI
176 FTMarshalImpl_MarshalInterface (LPMARSHAL iface, IStream * pStm, REFIID riid, void *pv,
177 DWORD dwDestContext, void *pvDestContext, DWORD mshlflags)
180 IMarshal *pMarshal = NULL;
183 TRACE("(%p, %s, %p, 0x%x, %p, 0x%x)\n", pStm, debugstr_guid(riid), pv,
184 dwDestContext, pvDestContext, mshlflags);
186 /* if the marshalling happens inside the same process the interface pointer is
187 copied between the apartments */
188 if (dwDestContext == MSHCTX_INPROC || dwDestContext == MSHCTX_CROSSCTX) {
191 GUID unknown_guid = { 0 };
193 hres = IUnknown_QueryInterface((IUnknown *)pv, riid, &object);
197 /* don't hold a reference to table-weak marshaled interfaces */
198 if (mshlflags & MSHLFLAGS_TABLEWEAK)
199 IUnknown_Release((IUnknown *)object);
201 hres = IStream_Write (pStm, &mshlflags, sizeof (mshlflags), NULL);
202 if (hres != S_OK) return STG_E_MEDIUMFULL;
204 hres = IStream_Write (pStm, &object, sizeof (object), NULL);
205 if (hres != S_OK) return STG_E_MEDIUMFULL;
207 if (sizeof(object) == sizeof(DWORD))
209 hres = IStream_Write (pStm, &constant, sizeof (constant), NULL);
210 if (hres != S_OK) return STG_E_MEDIUMFULL;
213 hres = IStream_Write (pStm, &unknown_guid, sizeof (unknown_guid), NULL);
214 if (hres != S_OK) return STG_E_MEDIUMFULL;
219 /* use the standard marshaler to handle all other cases */
220 CoGetStandardMarshal (riid, pv, dwDestContext, pvDestContext, mshlflags, &pMarshal);
221 hres = IMarshal_MarshalInterface (pMarshal, pStm, riid, pv, dwDestContext, pvDestContext, mshlflags);
222 IMarshal_Release (pMarshal);
226 static HRESULT WINAPI
227 FTMarshalImpl_UnmarshalInterface (LPMARSHAL iface, IStream * pStm, REFIID riid, void **ppv)
235 TRACE ("(%p, %s, %p)\n", pStm, debugstr_guid(riid), ppv);
237 hres = IStream_Read (pStm, &mshlflags, sizeof (mshlflags), NULL);
238 if (hres != S_OK) return STG_E_READFAULT;
240 hres = IStream_Read (pStm, &object, sizeof (object), NULL);
241 if (hres != S_OK) return STG_E_READFAULT;
243 if (sizeof(object) == sizeof(DWORD))
245 hres = IStream_Read (pStm, &constant, sizeof (constant), NULL);
246 if (hres != S_OK) return STG_E_READFAULT;
248 FIXME("constant is 0x%x instead of 0\n", constant);
251 hres = IStream_Read (pStm, &unknown_guid, sizeof (unknown_guid), NULL);
252 if (hres != S_OK) return STG_E_READFAULT;
254 hres = IUnknown_QueryInterface(object, riid, ppv);
255 if (!(mshlflags & (MSHLFLAGS_TABLEWEAK|MSHLFLAGS_TABLESTRONG)))
256 IUnknown_Release(object);
260 static HRESULT WINAPI FTMarshalImpl_ReleaseMarshalData (LPMARSHAL iface, IStream * pStm)
268 TRACE ("(%p)\n", pStm);
270 hres = IStream_Read (pStm, &mshlflags, sizeof (mshlflags), NULL);
271 if (hres != S_OK) return STG_E_READFAULT;
273 hres = IStream_Read (pStm, &object, sizeof (object), NULL);
274 if (hres != S_OK) return STG_E_READFAULT;
276 if (sizeof(object) == sizeof(DWORD))
278 hres = IStream_Read (pStm, &constant, sizeof (constant), NULL);
279 if (hres != S_OK) return STG_E_READFAULT;
281 FIXME("constant is 0x%x instead of 0\n", constant);
284 hres = IStream_Read (pStm, &unknown_guid, sizeof (unknown_guid), NULL);
285 if (hres != S_OK) return STG_E_READFAULT;
287 IUnknown_Release(object);
291 static HRESULT WINAPI FTMarshalImpl_DisconnectObject (LPMARSHAL iface, DWORD dwReserved)
298 static const IMarshalVtbl ftmvtbl =
300 FTMarshalImpl_QueryInterface,
301 FTMarshalImpl_AddRef,
302 FTMarshalImpl_Release,
303 FTMarshalImpl_GetUnmarshalClass,
304 FTMarshalImpl_GetMarshalSizeMax,
305 FTMarshalImpl_MarshalInterface,
306 FTMarshalImpl_UnmarshalInterface,
307 FTMarshalImpl_ReleaseMarshalData,
308 FTMarshalImpl_DisconnectObject
311 /***********************************************************************
312 * CoCreateFreeThreadedMarshaler [OLE32.@]
314 * Creates a free-threaded marshaler.
317 * punkOuter [I] Optional. Outer unknown.
318 * ppunkMarshal [O] On return, the inner unknown of the created free-threaded marshaler.
322 * Failure: E_OUTOFMEMORY if no memory available to create object.
325 * Objects that ensure their state is maintained consistent when used by
326 * multiple threads and reference no single-threaded objects are known as
327 * free-threaded. The free-threaded marshaler enables these objects to be
328 * efficiently marshaled within the same process, by not creating proxies
329 * (as they aren't needed for the object to be safely used), whilst still
330 * allowing the object to be used in inter-process and inter-machine contexts.
332 HRESULT WINAPI CoCreateFreeThreadedMarshaler (LPUNKNOWN punkOuter, LPUNKNOWN * ppunkMarshal)
337 TRACE ("(%p %p)\n", punkOuter, ppunkMarshal);
339 ftm = HeapAlloc (GetProcessHeap (), 0, sizeof (FTMarshalImpl));
341 return E_OUTOFMEMORY;
343 ftm->lpVtbl = &iunkvt;
344 ftm->lpvtblFTM = &ftmvtbl;
346 ftm->pUnkOuter = punkOuter ? punkOuter : _IFTMUnknown_(ftm);
348 *ppunkMarshal = _IFTMUnknown_ (ftm);
352 static HRESULT WINAPI FTMarshalCF_QueryInterface(LPCLASSFACTORY iface,
353 REFIID riid, LPVOID *ppv)
356 if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory))
359 IUnknown_AddRef(iface);
362 return E_NOINTERFACE;
365 static ULONG WINAPI FTMarshalCF_AddRef(LPCLASSFACTORY iface)
367 return 2; /* non-heap based object */
370 static ULONG WINAPI FTMarshalCF_Release(LPCLASSFACTORY iface)
372 return 1; /* non-heap based object */
375 static HRESULT WINAPI FTMarshalCF_CreateInstance(LPCLASSFACTORY iface,
376 LPUNKNOWN pUnk, REFIID riid, LPVOID *ppv)
381 TRACE("(%p, %s, %p)\n", pUnk, debugstr_guid(riid), ppv);
385 hr = CoCreateFreeThreadedMarshaler(pUnk, &pUnknown);
389 hr = IUnknown_QueryInterface(pUnknown, riid, ppv);
390 IUnknown_Release(pUnknown);
396 static HRESULT WINAPI FTMarshalCF_LockServer(LPCLASSFACTORY iface, BOOL fLock)
398 FIXME("(%d), stub!\n",fLock);
402 static const IClassFactoryVtbl FTMarshalCFVtbl =
404 FTMarshalCF_QueryInterface,
407 FTMarshalCF_CreateInstance,
408 FTMarshalCF_LockServer
410 static const IClassFactoryVtbl *FTMarshalCF = &FTMarshalCFVtbl;
412 HRESULT FTMarshalCF_Create(REFIID riid, LPVOID *ppv)
414 return IClassFactory_QueryInterface((IClassFactory *)&FTMarshalCF, riid, ppv);