mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-14 18:18:24 +00:00
107 lines
2.7 KiB
C
107 lines
2.7 KiB
C
/**
|
|
* Looking Glass
|
|
* Copyright © 2017-2024 The Looking Glass Authors
|
|
* https://looking-glass.io
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program 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 General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc., 59
|
|
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef _H_COMREF_
|
|
#define _H_COMREF_
|
|
|
|
#include <stdbool.h>
|
|
#include <windows.h>
|
|
#include <malloc.h>
|
|
|
|
#include "common/util.h"
|
|
#include "common/locking.h"
|
|
|
|
/**
|
|
* These functions are to assist in tracking and releasing COM objects
|
|
*/
|
|
|
|
typedef struct ComScope ComScope;
|
|
|
|
struct ComScope
|
|
{
|
|
bool threadSafe;
|
|
LG_Lock lock;
|
|
|
|
unsigned size;
|
|
unsigned used;
|
|
struct
|
|
{
|
|
IUnknown * ref;
|
|
const char * where;
|
|
}
|
|
*refs;
|
|
|
|
void (*free)(void * ptr);
|
|
};
|
|
|
|
void comRef_initScope(unsigned size, ComScope ** instance,
|
|
void *(allocFn)(size_t size), void (freeFn)(void * ptr), bool threadSafe);
|
|
|
|
void comRef_freeScope(ComScope ** instance);
|
|
|
|
IUnknown ** comRef_new(ComScope * scope, IUnknown *** dst, const char * where);
|
|
|
|
#define comRef_initGlobalScope(size, scope) \
|
|
comRef_initScope((size), &(scope), malloc, free, true)
|
|
|
|
#define comRef_freeGlobalScope(scope) \
|
|
comRef_freeScope(&(scope))
|
|
|
|
#define comRef_scopePush(size) \
|
|
ComScope * _comRef_localScope = alloca(sizeof(*_comRef_localScope) + \
|
|
sizeof(*(_comRef_localScope->refs)) * size); \
|
|
comRef_initScope(size, &_comRef_localScope, NULL, NULL, false);
|
|
|
|
#define comRef_scopePop() \
|
|
comRef_freeScope(&_comRef_localScope)
|
|
|
|
#define comRef_defineLocal(type, name) \
|
|
type ** name = NULL; \
|
|
comRef_new(_comRef_localScope, (IUnknown ***)&(name), \
|
|
STR(name));
|
|
|
|
#define _comRef_toGlobal(globalScope, dst, src) \
|
|
{ \
|
|
IUnknown ** global = comRef_new((globalScope), (IUnknown ***)&(dst), \
|
|
STR(dst)); \
|
|
*global = (IUnknown *)*(src); \
|
|
*(src) = NULL; \
|
|
}
|
|
|
|
/**
|
|
* Release a COM reference immediately
|
|
* This is just a helper, the ref is still tracked if used again
|
|
*/
|
|
inline static ULONG comRef_release(IUnknown ** ref)
|
|
{
|
|
if (!ref)
|
|
return 0;
|
|
|
|
ULONG count = 0;
|
|
if (*ref)
|
|
count = IUnknown_Release(*ref);
|
|
*ref = NULL;
|
|
return count;
|
|
}
|
|
|
|
#define comRef_release(ref) comRef_release((IUnknown **)(ref))
|
|
|
|
#endif
|