Implemented the global interface table object using a simple linked

list.

dlls/ole32/Makefile.in

@@ -22,6 +22,7 @@ C_SRCS = \
 	errorinfo.c \
 	filemoniker.c \
 	ftmarshal.c \
+	git.c \
 	hglobalstream.c \
 	ifs.c \
 	itemmoniker.c \

dlls/ole32/compobj.c

@@ -58,6 +58,10 @@ static HRESULT COM_GetRegisteredClassObject(REFCLSID rclsid, DWORD dwClsContext,
 static void COM_RevokeAllClasses();
 static void COM_ExternalLockFreeList();
 
+const CLSID CLSID_StdGlobalInterfaceTable = { 0x00000323, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };
+
+static void* StdGlobalInterfaceTableInstance;
+
 /*****************************************************************************
  * Appartment management stuff
  *
@@ -1316,6 +1320,20 @@ HRESULT WINAPI CoCreateInstance(
    */
   *ppv = 0;
 
+  /*
+   * The Standard Global Interface Table (GIT) object is a process-wide singleton.
+   * Rather than create a class factory, we can just check for it here
+   */
+  if (IsEqualIID(rclsid, &CLSID_StdGlobalInterfaceTable)) {
+    if (StdGlobalInterfaceTableInstance == NULL) 
+      StdGlobalInterfaceTableInstance = StdGlobalInterfaceTable_Construct();
+    hres = IGlobalInterfaceTable_QueryInterface( (IGlobalInterfaceTable*) StdGlobalInterfaceTableInstance, iid, ppv);
+    if (hres) return hres;
+    
+    TRACE("Retrieved GIT (%p)\n", *ppv);
+    return S_OK;
+  }
+  
   /*
    * Get a class factory to construct the object we want.
    */

dlls/ole32/compobj_private.h

@@ -27,6 +27,9 @@
 
 #include "wtypes.h"
 
+extern void* StdGlobalInterfaceTable_Construct();
+extern void  StdGlobalInterfaceTable_Destroy(void* self);
+
 extern HRESULT WINE_StringFromCLSID(const CLSID *id,LPSTR idstr);
 extern HRESULT create_marshalled_proxy(REFCLSID rclsid, REFIID iid, LPVOID *ppv);
 

dlls/ole32/git.c

@@ -0,0 +1,263 @@
+/*
+ * Implementation of the StdGlobalInterfaceTable object
+ *
+ * The GlobalInterfaceTable (GIT) object is used to marshal interfaces between
+ * threading apartments (contexts). When you want to pass an interface but not
+ * as a parameter, it wouldn't get marshalled automatically, so you can use this
+ * object to insert the interface into a table, and you get back a cookie.
+ * Then when it's retrieved, it'll be unmarshalled into the right apartment.
+ *
+ * Copyright 1999 Mike Hearn <mike@theoretic.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "windef.h"
+#include "objbase.h"
+#include "ole2.h"
+#include "winbase.h"
+#include "winerror.h"
+#include "winternl.h"
+
+#include "compobj_private.h" 
+
+#include "wine/debug.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(ole);
+
+/****************************************************************************
+ * StdGlobalInterfaceTable definition
+ *
+ * This class implements IGlobalInterfaceTable and is a process-wide singleton
+ * used for marshalling interfaces between threading apartments using cookies.
+ */
+
+/* Each entry in the linked list of GIT entries */
+typedef struct StdGITEntry
+{
+  DWORD cookie;
+  IID iid;      /* IID of the interface */
+  IStream* stream; /* Holds the marshalled interface */
+
+  struct StdGITEntry* next;
+  struct StdGITEntry* prev;  
+} StdGITEntry;
+
+/* Class data */
+typedef struct StdGlobalInterfaceTableImpl
+{
+  ICOM_VFIELD(IGlobalInterfaceTable);
+
+  ULONG ref;
+  struct StdGITEntry* firstEntry;
+  struct StdGITEntry* lastEntry;
+  ULONG nextCookie;
+  
+} StdGlobalInterfaceTableImpl;
+
+
+/* IUnknown */
+static HRESULT WINAPI StdGlobalInterfaceTable_QueryInterface(IGlobalInterfaceTable* iface, REFIID riid, void** ppvObject);
+static ULONG   WINAPI StdGlobalInterfaceTable_AddRef(IGlobalInterfaceTable* iface);
+static ULONG   WINAPI StdGlobalInterfaceTable_Release(IGlobalInterfaceTable* iface);
+/* IGlobalInterfaceTable */
+static HRESULT WINAPI StdGlobalInterfaceTable_RegisterInterfaceInGlobal(IGlobalInterfaceTable* iface, IUnknown* pUnk, REFIID riid, DWORD* pdwCookie);
+static HRESULT WINAPI StdGlobalInterfaceTable_RevokeInterfaceFromGlobal(IGlobalInterfaceTable* iface, DWORD dwCookie);
+static HRESULT WINAPI StdGlobalInterfaceTable_GetInterfaceFromGlobal(IGlobalInterfaceTable* iface, DWORD dwCookie, REFIID riid, void **ppv);
+
+/* Virtual function table */
+static ICOM_VTABLE(IGlobalInterfaceTable) StdGlobalInterfaceTableImpl_Vtbl =
+{
+  ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
+  StdGlobalInterfaceTable_QueryInterface,
+  StdGlobalInterfaceTable_AddRef,
+  StdGlobalInterfaceTable_Release,
+  StdGlobalInterfaceTable_RegisterInterfaceInGlobal,
+  StdGlobalInterfaceTable_RevokeInterfaceFromGlobal,
+  StdGlobalInterfaceTable_GetInterfaceFromGlobal
+};
+
+/***
+ * Let's go! Here is the constructor and destructor for the class.
+ *
+ */
+
+/** This function constructs the GIT. It should only be called once **/
+void* StdGlobalInterfaceTable_Construct() {
+  StdGlobalInterfaceTableImpl* newGIT;
+
+  newGIT = HeapAlloc(GetProcessHeap(), 0, sizeof(StdGlobalInterfaceTableImpl));
+  if (newGIT == 0) return newGIT;
+
+  ICOM_VTBL(newGIT) = &StdGlobalInterfaceTableImpl_Vtbl;
+  
+  newGIT->ref = 0;      /* Initialise the reference count */
+  newGIT->firstEntry = NULL; /* we start with an empty table   */
+  newGIT->lastEntry  = NULL;
+  newGIT->nextCookie = 0xf100; /* that's where windows starts, so that's where we start */
+  TRACE("Created the GIT at %p\n", newGIT);
+
+  return (void*)newGIT;
+}
+
+/** This destroys it again. It should revoke all the held interfaces first **/
+void StdGlobalInterfaceTable_Destroy(void* self) {
+  TRACE("(%p)\n", self);
+  FIXME("Revoke held interfaces here\n");
+  
+  HeapFree(GetProcessHeap(), 0, self);
+}
+
+/***
+ * A helper function to traverse the list and find the entry that matches the cookie.
+ * Returns NULL if not found
+ */
+StdGITEntry* StdGlobalInterfaceTable_FindEntry(IGlobalInterfaceTable* iface, DWORD cookie) {
+  StdGlobalInterfaceTableImpl* const self = (StdGlobalInterfaceTableImpl*) iface;
+  StdGITEntry* e;
+
+  TRACE("iface=%p, cookie=0x%x\n", iface, (UINT)cookie);
+  
+  e = self->firstEntry;
+  while (e != NULL) {
+    if (e->cookie == cookie) return e;
+    e = e->next;
+  }
+  return NULL;
+}
+
+/***
+ * Here's the boring boilerplate stuff for IUnknown
+ */
+
+HRESULT WINAPI StdGlobalInterfaceTable_QueryInterface(IGlobalInterfaceTable* iface, REFIID riid, void** ppvObject) {
+  StdGlobalInterfaceTableImpl* const self = (StdGlobalInterfaceTableImpl*) iface;
+
+  /* Make sure silly coders can't crash us */
+  if (ppvObject == 0) return E_INVALIDARG;
+
+  *ppvObject = 0; /* assume we don't have the interface */
+
+  /* Do we implement that interface? */
+  if (IsEqualIID(&IID_IUnknown, riid)) {
+    *ppvObject = (IGlobalInterfaceTable*) self;
+  } else if (IsEqualIID(&IID_IGlobalInterfaceTable, riid)) {
+    *ppvObject = (IGlobalInterfaceTable*) self;
+  } else return E_NOINTERFACE;
+
+  /* Now inc the refcount */
+  /* we don't use refcounts for now: StdGlobalInterfaceTable_AddRef(iface); */
+  return S_OK;
+}
+
+ULONG WINAPI StdGlobalInterfaceTable_AddRef(IGlobalInterfaceTable* iface) {
+  StdGlobalInterfaceTableImpl* const self = (StdGlobalInterfaceTableImpl*) iface;
+
+  self->ref++;
+  return self->ref;
+}
+
+ULONG WINAPI StdGlobalInterfaceTable_Release(IGlobalInterfaceTable* iface) {
+  StdGlobalInterfaceTableImpl* const self = (StdGlobalInterfaceTableImpl*) iface;
+
+  self->ref--;
+  if (self->ref == 0) {
+    /* Hey ho, it's time to go, so long again 'till next weeks show! */
+    StdGlobalInterfaceTable_Destroy(self);
+    return 0;
+  }
+
+  return self->ref;
+}
+
+/***
+ * Now implement the actual IGlobalInterfaceTable interface
+ */
+
+HRESULT WINAPI StdGlobalInterfaceTable_RegisterInterfaceInGlobal(IGlobalInterfaceTable* iface, IUnknown* pUnk, REFIID riid, DWORD* pdwCookie) {
+  StdGlobalInterfaceTableImpl* const self = (StdGlobalInterfaceTableImpl*) iface;
+  IStream* stream = NULL;
+  HRESULT hres;
+  StdGITEntry* entry;
+
+  TRACE("iface=%p, pUnk=%p, riid=%s, pdwCookie=%p\n", iface, pUnk, debugstr_guid(riid), pdwCookie);
+
+  if (pUnk == NULL) return E_INVALIDARG;
+  
+  /* marshal the interface */
+  hres = CoMarshalInterThreadInterfaceInStream(riid, pUnk, &stream);
+  if (hres) return hres;
+  entry = HeapAlloc(GetProcessHeap(), 0, sizeof(StdGITEntry));
+  if (entry == NULL) return E_OUTOFMEMORY;
+  
+  entry->iid = *riid;
+  entry->stream = stream;
+  entry->cookie = self->nextCookie;
+  self->nextCookie++; /* inc the cookie count */
+
+  /* insert the new entry at the end of the list */
+  entry->next = NULL;
+  entry->prev = self->lastEntry;
+  if (entry->prev) entry->prev->next = entry;
+  else self->firstEntry = entry;
+  self->lastEntry = entry;
+
+  /* and return the cookie */
+  *pdwCookie = entry->cookie;
+  return S_OK;
+}
+
+HRESULT WINAPI StdGlobalInterfaceTable_RevokeInterfaceFromGlobal(IGlobalInterfaceTable* iface, DWORD dwCookie) {
+  StdGlobalInterfaceTableImpl* const self = (StdGlobalInterfaceTableImpl*) iface;
+  StdGITEntry* entry;
+
+  TRACE("iface=%p, dwCookie=0x%x\n", iface, (UINT)dwCookie);
+  
+  entry = StdGlobalInterfaceTable_FindEntry(iface, dwCookie);
+  if (entry == NULL) {
+    TRACE("Entry not found\n");
+    return E_INVALIDARG; /* not found */
+  }
+
+  /* chop entry out of the list, and free the memory */
+  if (entry->prev) entry->prev->next = entry->next;
+  else self->firstEntry = entry->next;
+  if (entry->next) entry->next->prev = entry->prev;
+  else self->lastEntry = entry->prev;
+  HeapFree(GetProcessHeap(), 0, entry);
+  return S_OK;
+}
+
+HRESULT WINAPI StdGlobalInterfaceTable_GetInterfaceFromGlobal(IGlobalInterfaceTable* iface, DWORD dwCookie, REFIID riid, void **ppv) {
+  StdGITEntry* entry;
+  HRESULT hres;
+  
+  entry = StdGlobalInterfaceTable_FindEntry(iface, dwCookie);
+  if (entry == NULL) return E_INVALIDARG;
+  if (!IsEqualIID(&entry->iid, &riid)) return E_INVALIDARG;
+
+  /* unmarshal the interface */
+  hres = CoGetInterfaceAndReleaseStream(entry->stream, riid, *ppv);
+  if (hres) return hres;
+  
+  return S_OK;
+}

dlls/ole32/marshal.c

@@ -555,7 +555,7 @@ CoMarshalInterThreadInterfaceInStream(
   LARGE_INTEGER		seekto;
   HRESULT		hres;
 
-  TRACE("(,%s,)\n",debugstr_guid(riid));
+  TRACE("(%s, %p, %p)\n",debugstr_guid(riid), pUnk, ppStm);
   hres = CreateStreamOnHGlobal(0, TRUE, ppStm);
   if (hres) return hres;
   /* CoMarshalInterface(...); */

winedefault.reg

@@ -146,6 +146,14 @@
 # Entries for OLE32 (COM/OLE base)
 #
 
+# The GlobalInterfaceTable is used for marshalling interfaces between threading contexts by cookie lookup table
+[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00000323-0000-0000-c000-000000000046}]
+@="StdGlobalInterfaceTable"
+
+[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00000323-0000-0000-c000-000000000046}\InProcServer32]
+@="ole32.dll"
+"ThreadingModel"="Apartment"
+
 # OLE32's built-in marshaler, handles standard interfaces such as IClassFactory.
 # (PSFactoryBuffer = Proxy/Stub factory)
 [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00000320-0000-0000-C000-000000000046}]
@@ -2852,4 +2860,3 @@
 
 [HKEY_CLASSES_ROOT\txtfile\shell\print\command]
 @="C:\\WINDOWS\\NOTEPAD.EXE /p %1"
-