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 IUnknown IUnknown_iface;
44 IMarshal IMarshal_iface;
49 static inline FTMarshalImpl *impl_from_IUnknown(IUnknown *iface)
51 return CONTAINING_RECORD(iface, FTMarshalImpl, IUnknown_iface);
54 static inline FTMarshalImpl *impl_from_IMarshal( IMarshal *iface )
56 return CONTAINING_RECORD(iface, FTMarshalImpl, IMarshal_iface);
59 /* inner IUnknown to handle aggregation */
61 IiFTMUnknown_fnQueryInterface (IUnknown * iface, REFIID riid, LPVOID * ppv)
64 FTMarshalImpl *This = impl_from_IUnknown(iface);
69 if (IsEqualIID (&IID_IUnknown, riid))
70 *ppv = &This->IUnknown_iface;
71 else if (IsEqualIID (&IID_IMarshal, riid))
72 *ppv = &This->IMarshal_iface;
74 FIXME ("No interface for %s.\n", debugstr_guid (riid));
77 IUnknown_AddRef ((IUnknown *) * ppv);
81 static ULONG WINAPI IiFTMUnknown_fnAddRef (IUnknown * iface)
84 FTMarshalImpl *This = impl_from_IUnknown(iface);
87 return InterlockedIncrement (&This->ref);
90 static ULONG WINAPI IiFTMUnknown_fnRelease (IUnknown * iface)
93 FTMarshalImpl *This = impl_from_IUnknown(iface);
96 if (InterlockedDecrement (&This->ref))
98 HeapFree (GetProcessHeap (), 0, This);
102 static const IUnknownVtbl iunkvt =
104 IiFTMUnknown_fnQueryInterface,
105 IiFTMUnknown_fnAddRef,
106 IiFTMUnknown_fnRelease
109 static HRESULT WINAPI
110 FTMarshalImpl_QueryInterface (LPMARSHAL iface, REFIID riid, LPVOID * ppv)
113 FTMarshalImpl *This = impl_from_IMarshal(iface);
115 TRACE ("(%p)->(%s,%p)\n", This, debugstr_guid (riid), ppv);
116 return IUnknown_QueryInterface (This->pUnkOuter, riid, ppv);
120 FTMarshalImpl_AddRef (LPMARSHAL iface)
123 FTMarshalImpl *This = impl_from_IMarshal(iface);
126 return IUnknown_AddRef (This->pUnkOuter);
130 FTMarshalImpl_Release (LPMARSHAL iface)
133 FTMarshalImpl *This = impl_from_IMarshal(iface);
136 return IUnknown_Release (This->pUnkOuter);
139 static HRESULT WINAPI
140 FTMarshalImpl_GetUnmarshalClass (LPMARSHAL iface, REFIID riid, void *pv, DWORD dwDestContext,
141 void *pvDestContext, DWORD mshlflags, CLSID * pCid)
143 TRACE("(%s, %p, 0x%x, %p, 0x%x, %p)\n", debugstr_guid(riid), pv,
144 dwDestContext, pvDestContext, mshlflags, pCid);
145 if (dwDestContext == MSHCTX_INPROC || dwDestContext == MSHCTX_CROSSCTX)
146 *pCid = CLSID_InProcFreeMarshaler;
148 *pCid = CLSID_DfMarshal;
152 static HRESULT WINAPI
153 FTMarshalImpl_GetMarshalSizeMax (LPMARSHAL iface, REFIID riid, void *pv, DWORD dwDestContext,
154 void *pvDestContext, DWORD mshlflags, DWORD * pSize)
157 IMarshal *pMarshal = NULL;
160 TRACE("(%s, %p, 0x%x, %p, 0x%x, %p)\n", debugstr_guid(riid), pv,
161 dwDestContext, pvDestContext, mshlflags, pSize);
163 /* if the marshalling happens inside the same process the interface pointer is
164 copied between the apartments */
165 if (dwDestContext == MSHCTX_INPROC || dwDestContext == MSHCTX_CROSSCTX) {
166 *pSize = sizeof (mshlflags) + sizeof (pv) + sizeof (DWORD) + sizeof (GUID);
170 /* use the standard marshaller to handle all other cases */
171 CoGetStandardMarshal (riid, pv, dwDestContext, pvDestContext, mshlflags, &pMarshal);
172 hres = IMarshal_GetMarshalSizeMax (pMarshal, riid, pv, dwDestContext, pvDestContext, mshlflags, pSize);
173 IMarshal_Release (pMarshal);
177 static HRESULT WINAPI
178 FTMarshalImpl_MarshalInterface (LPMARSHAL iface, IStream * pStm, REFIID riid, void *pv,
179 DWORD dwDestContext, void *pvDestContext, DWORD mshlflags)
182 IMarshal *pMarshal = NULL;
185 TRACE("(%p, %s, %p, 0x%x, %p, 0x%x)\n", pStm, debugstr_guid(riid), pv,
186 dwDestContext, pvDestContext, mshlflags);
188 /* if the marshalling happens inside the same process the interface pointer is
189 copied between the apartments */
190 if (dwDestContext == MSHCTX_INPROC || dwDestContext == MSHCTX_CROSSCTX) {
193 GUID unknown_guid = { 0 };
195 hres = IUnknown_QueryInterface((IUnknown *)pv, riid, &object);
199 /* don't hold a reference to table-weak marshaled interfaces */
200 if (mshlflags & MSHLFLAGS_TABLEWEAK)
201 IUnknown_Release((IUnknown *)object);
203 hres = IStream_Write (pStm, &mshlflags, sizeof (mshlflags), NULL);
204 if (hres != S_OK) return STG_E_MEDIUMFULL;
206 hres = IStream_Write (pStm, &object, sizeof (object), NULL);
207 if (hres != S_OK) return STG_E_MEDIUMFULL;
209 if (sizeof(object) == sizeof(DWORD))
211 hres = IStream_Write (pStm, &constant, sizeof (constant), NULL);
212 if (hres != S_OK) return STG_E_MEDIUMFULL;
215 hres = IStream_Write (pStm, &unknown_guid, sizeof (unknown_guid), NULL);
216 if (hres != S_OK) return STG_E_MEDIUMFULL;
221 /* use the standard marshaler to handle all other cases */
222 CoGetStandardMarshal (riid, pv, dwDestContext, pvDestContext, mshlflags, &pMarshal);
223 hres = IMarshal_MarshalInterface (pMarshal, pStm, riid, pv, dwDestContext, pvDestContext, mshlflags);
224 IMarshal_Release (pMarshal);
228 static HRESULT WINAPI
229 FTMarshalImpl_UnmarshalInterface (LPMARSHAL iface, IStream * pStm, REFIID riid, void **ppv)
237 TRACE ("(%p, %s, %p)\n", pStm, debugstr_guid(riid), ppv);
239 hres = IStream_Read (pStm, &mshlflags, sizeof (mshlflags), NULL);
240 if (hres != S_OK) return STG_E_READFAULT;
242 hres = IStream_Read (pStm, &object, sizeof (object), NULL);
243 if (hres != S_OK) return STG_E_READFAULT;
245 if (sizeof(object) == sizeof(DWORD))
247 hres = IStream_Read (pStm, &constant, sizeof (constant), NULL);
248 if (hres != S_OK) return STG_E_READFAULT;
250 FIXME("constant is 0x%x instead of 0\n", constant);
253 hres = IStream_Read (pStm, &unknown_guid, sizeof (unknown_guid), NULL);
254 if (hres != S_OK) return STG_E_READFAULT;
256 hres = IUnknown_QueryInterface(object, riid, ppv);
257 if (!(mshlflags & (MSHLFLAGS_TABLEWEAK|MSHLFLAGS_TABLESTRONG)))
258 IUnknown_Release(object);
262 static HRESULT WINAPI FTMarshalImpl_ReleaseMarshalData (LPMARSHAL iface, IStream * pStm)
270 TRACE ("(%p)\n", pStm);
272 hres = IStream_Read (pStm, &mshlflags, sizeof (mshlflags), NULL);
273 if (hres != S_OK) return STG_E_READFAULT;
275 hres = IStream_Read (pStm, &object, sizeof (object), NULL);
276 if (hres != S_OK) return STG_E_READFAULT;
278 if (sizeof(object) == sizeof(DWORD))
280 hres = IStream_Read (pStm, &constant, sizeof (constant), NULL);
281 if (hres != S_OK) return STG_E_READFAULT;
283 FIXME("constant is 0x%x instead of 0\n", constant);
286 hres = IStream_Read (pStm, &unknown_guid, sizeof (unknown_guid), NULL);
287 if (hres != S_OK) return STG_E_READFAULT;
289 IUnknown_Release(object);
293 static HRESULT WINAPI FTMarshalImpl_DisconnectObject (LPMARSHAL iface, DWORD dwReserved)
300 static const IMarshalVtbl ftmvtbl =
302 FTMarshalImpl_QueryInterface,
303 FTMarshalImpl_AddRef,
304 FTMarshalImpl_Release,
305 FTMarshalImpl_GetUnmarshalClass,
306 FTMarshalImpl_GetMarshalSizeMax,
307 FTMarshalImpl_MarshalInterface,
308 FTMarshalImpl_UnmarshalInterface,
309 FTMarshalImpl_ReleaseMarshalData,
310 FTMarshalImpl_DisconnectObject
313 /***********************************************************************
314 * CoCreateFreeThreadedMarshaler [OLE32.@]
316 * Creates a free-threaded marshaler.
319 * punkOuter [I] Optional. Outer unknown.
320 * ppunkMarshal [O] On return, the inner unknown of the created free-threaded marshaler.
324 * Failure: E_OUTOFMEMORY if no memory available to create object.
327 * Objects that ensure their state is maintained consistent when used by
328 * multiple threads and reference no single-threaded objects are known as
329 * free-threaded. The free-threaded marshaler enables these objects to be
330 * efficiently marshaled within the same process, by not creating proxies
331 * (as they aren't needed for the object to be safely used), whilst still
332 * allowing the object to be used in inter-process and inter-machine contexts.
334 HRESULT WINAPI CoCreateFreeThreadedMarshaler (LPUNKNOWN punkOuter, LPUNKNOWN * ppunkMarshal)
339 TRACE ("(%p %p)\n", punkOuter, ppunkMarshal);
341 ftm = HeapAlloc (GetProcessHeap (), 0, sizeof (FTMarshalImpl));
343 return E_OUTOFMEMORY;
345 ftm->IUnknown_iface.lpVtbl = &iunkvt;
346 ftm->IMarshal_iface.lpVtbl = &ftmvtbl;
348 ftm->pUnkOuter = punkOuter ? punkOuter : &ftm->IUnknown_iface;
350 *ppunkMarshal = &ftm->IUnknown_iface;
354 static HRESULT WINAPI FTMarshalCF_QueryInterface(LPCLASSFACTORY iface,
355 REFIID riid, LPVOID *ppv)
358 if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory))
361 IUnknown_AddRef(iface);
364 return E_NOINTERFACE;
367 static ULONG WINAPI FTMarshalCF_AddRef(LPCLASSFACTORY iface)
369 return 2; /* non-heap based object */
372 static ULONG WINAPI FTMarshalCF_Release(LPCLASSFACTORY iface)
374 return 1; /* non-heap based object */
377 static HRESULT WINAPI FTMarshalCF_CreateInstance(LPCLASSFACTORY iface,
378 LPUNKNOWN pUnk, REFIID riid, LPVOID *ppv)
383 TRACE("(%p, %s, %p)\n", pUnk, debugstr_guid(riid), ppv);
387 hr = CoCreateFreeThreadedMarshaler(pUnk, &pUnknown);
391 hr = IUnknown_QueryInterface(pUnknown, riid, ppv);
392 IUnknown_Release(pUnknown);
398 static HRESULT WINAPI FTMarshalCF_LockServer(LPCLASSFACTORY iface, BOOL fLock)
400 FIXME("(%d), stub!\n",fLock);
404 static const IClassFactoryVtbl FTMarshalCFVtbl =
406 FTMarshalCF_QueryInterface,
409 FTMarshalCF_CreateInstance,
410 FTMarshalCF_LockServer
412 static const IClassFactoryVtbl *FTMarshalCF = &FTMarshalCFVtbl;
414 HRESULT FTMarshalCF_Create(REFIID riid, LPVOID *ppv)
416 return IClassFactory_QueryInterface((IClassFactory *)&FTMarshalCF, riid, ppv);