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Implemented the global interface table object using a simple linked 

list.
This commit is contained in:
Mike Hearn 2003-03-11 01:45:38 +00:00 committed by Alexandre Julliard
parent 0b36e34a80
commit cb816d2c3f
6 changed files with 294 additions and 2 deletions
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1
dlls/ole32/Makefile.in
View File

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

18
dlls/ole32/compobj.c
View File

@ -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.
*/

3
dlls/ole32/compobj_private.h
View File

@ -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);

263
dlls/ole32/git.c Normal file
View File

@ -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;
}

2
dlls/ole32/marshal.c
View File

@ -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(...); */

9
winedefault.reg
View File

@ -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"