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gdi32: Add a generation count in the high word of GDI handles.

This commit is contained in:
Alexandre Julliard 2012-10-16 16:58:28 +02:00
parent 29b39020f7
commit 091c342f32
5 changed files with 79 additions and 37 deletions
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2
dlls/gdi32/enhmfdrv/objects.c
View File

@ -45,7 +45,7 @@ static UINT EMFDRV_AddHandle( PHYSDEV dev, HGDIOBJ obj )
physDev->handles,
physDev->handles_size * sizeof(physDev->handles[0]));
}
physDev->handles[index] = obj;
physDev->handles[index] = get_full_gdi_handle( obj );
physDev->cur_handles++;
if(physDev->cur_handles > physDev->emh->nHandles)

1
dlls/gdi32/gdi_private.h
View File

@ -304,6 +304,7 @@ extern BOOL WineEngRemoveFontResourceEx(LPCWSTR, DWORD, PVOID) DECLSPEC_HIDDEN;
/* gdiobj.c */
extern HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN;
extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
extern HGDIOBJ get_full_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
extern void *GDI_GetObjPtr( HGDIOBJ, WORD ) DECLSPEC_HIDDEN;
extern void GDI_ReleaseObj( HGDIOBJ ) DECLSPEC_HIDDEN;
extern void GDI_CheckNotLock(void) DECLSPEC_HIDDEN;

108
dlls/gdi32/gdiobj.c
View File

@ -52,6 +52,7 @@ struct gdi_handle_entry
void *obj; /* pointer to the object-specific data */
const struct gdi_obj_funcs *funcs; /* type-specific functions */
struct hdc_list *hdcs; /* list of HDCs interested in this object */
WORD generation; /* generation count for reusing handle values */
WORD type; /* object type (one of the OBJ_* constants) */
WORD selcount; /* number of times the object is selected in a DC */
WORD system : 1; /* system object flag */
@ -59,21 +60,27 @@ struct gdi_handle_entry
};
static struct gdi_handle_entry gdi_handles[MAX_GDI_HANDLES];
static int next_gdi_handle;
static struct gdi_handle_entry *next_free;
static struct gdi_handle_entry *next_unused = gdi_handles;
static LONG debug_count;
HMODULE gdi32_module = 0;
static inline HGDIOBJ entry_to_handle( struct gdi_handle_entry *entry )
{
unsigned int idx = entry - gdi_handles + FIRST_GDI_HANDLE;
return ULongToHandle( idx << 2 );
return LongToHandle( idx | (entry->generation << 16) );
}
static inline struct gdi_handle_entry *handle_entry( HGDIOBJ handle )
{
unsigned int idx = (HandleToULong(handle) >> 2) - FIRST_GDI_HANDLE;
unsigned int idx = LOWORD(handle) - FIRST_GDI_HANDLE;
if (idx < MAX_GDI_HANDLES && gdi_handles[idx].type) return &gdi_handles[idx];
if (idx < MAX_GDI_HANDLES && gdi_handles[idx].type)
{
if (!HIWORD( handle ) || HIWORD( handle ) == gdi_handles[idx].generation)
return &gdi_handles[idx];
}
if (handle) WARN( "invalid handle %p\n", handle );
return NULL;
}
@ -681,16 +688,14 @@ static void dump_gdi_objects( void )
TRACE( "%u objects:\n", MAX_GDI_HANDLES );
EnterCriticalSection( &gdi_section );
for (entry = gdi_handles; entry < gdi_handles + MAX_GDI_HANDLES; entry++)
for (entry = gdi_handles; entry < next_unused; entry++)
{
if (!entry->type)
{
TRACE( "handle %p FREE\n", entry_to_handle( entry ));
continue;
}
TRACE( "handle %p obj %p type %s selcount %u deleted %u\n",
entry_to_handle( entry ), entry->obj, gdi_obj_type( entry->type ),
entry->selcount, entry->deleted );
else
TRACE( "handle %p obj %p type %s selcount %u deleted %u\n",
entry_to_handle( entry ), entry->obj, gdi_obj_type( entry->type ),
entry->selcount, entry->deleted );
}
LeaveCriticalSection( &gdi_section );
}
@ -704,23 +709,23 @@ HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *func
{
struct gdi_handle_entry *entry;
HGDIOBJ ret;
int i;
assert( type ); /* type 0 is reserved to mark free entries */
EnterCriticalSection( &gdi_section );
for (i = next_gdi_handle + 1; i < MAX_GDI_HANDLES; i++)
if (!gdi_handles[i].type) goto found;
for (i = 0; i <= next_gdi_handle; i++)
if (!gdi_handles[i].type) goto found;
LeaveCriticalSection( &gdi_section );
ERR( "out of GDI object handles, expect a crash\n" );
if (TRACE_ON(gdi)) dump_gdi_objects();
return 0;
found:
entry = &gdi_handles[i];
entry = next_free;
if (entry)
next_free = entry->obj;
else if (next_unused < gdi_handles + MAX_GDI_HANDLES)
entry = next_unused++;
else
{
LeaveCriticalSection( &gdi_section );
ERR( "out of GDI object handles, expect a crash\n" );
if (TRACE_ON(gdi)) dump_gdi_objects();
return 0;
}
entry->obj = obj;
entry->funcs = funcs;
entry->hdcs = NULL;
@ -728,7 +733,7 @@ HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *func
entry->selcount = 0;
entry->system = 0;
entry->deleted = 0;
next_gdi_handle = i;
if (++entry->generation == 0xffff) entry->generation = 1;
ret = entry_to_handle( entry );
LeaveCriticalSection( &gdi_section );
TRACE( "allocated %s %p %u/%u\n", gdi_obj_type(type), ret,
@ -754,12 +759,32 @@ void *free_gdi_handle( HGDIOBJ handle )
InterlockedDecrement( &debug_count ) + 1, MAX_GDI_HANDLES );
object = entry->obj;
entry->type = 0;
entry->obj = next_free;
next_free = entry;
}
LeaveCriticalSection( &gdi_section );
return object;
}
/***********************************************************************
* get_full_gdi_handle
*
* Return the full GDI handle from a possibly truncated value.
*/
HGDIOBJ get_full_gdi_handle( HGDIOBJ handle )
{
struct gdi_handle_entry *entry;
if (!HIWORD( handle ))
{
EnterCriticalSection( &gdi_section );
if ((entry = handle_entry( handle ))) handle = entry_to_handle( entry );
LeaveCriticalSection( &gdi_section );
}
return handle;
}
/***********************************************************************
* GDI_GetObjPtr
*
@ -779,12 +804,7 @@ void *GDI_GetObjPtr( HGDIOBJ handle, WORD type )
if (!type || entry->type == type) ptr = entry->obj;
}
if (!ptr)
{
LeaveCriticalSection( &gdi_section );
WARN( "Invalid handle %p\n", handle );
}
if (!ptr) LeaveCriticalSection( &gdi_section );
return ptr;
}
@ -846,6 +866,8 @@ BOOL WINAPI DeleteObject( HGDIOBJ obj )
return TRUE;
}
obj = entry_to_handle( entry ); /* make it a full handle */
hdcs_head = entry->hdcs;
entry->hdcs = NULL;
@ -960,7 +982,11 @@ INT WINAPI GetObjectA( HGDIOBJ handle, INT count, LPVOID buffer )
TRACE("%p %d %p\n", handle, count, buffer );
EnterCriticalSection( &gdi_section );
if ((entry = handle_entry( handle ))) funcs = entry->funcs;
if ((entry = handle_entry( handle )))
{
funcs = entry->funcs;
handle = entry_to_handle( entry ); /* make it a full handle */
}
LeaveCriticalSection( &gdi_section );
if (funcs)
@ -987,7 +1013,11 @@ INT WINAPI GetObjectW( HGDIOBJ handle, INT count, LPVOID buffer )
TRACE("%p %d %p\n", handle, count, buffer );
EnterCriticalSection( &gdi_section );
if ((entry = handle_entry( handle ))) funcs = entry->funcs;
if ((entry = handle_entry( handle )))
{
funcs = entry->funcs;
handle = entry_to_handle( entry ); /* make it a full handle */
}
LeaveCriticalSection( &gdi_section );
if (funcs)
@ -1091,7 +1121,11 @@ HGDIOBJ WINAPI SelectObject( HDC hdc, HGDIOBJ hObj )
TRACE( "(%p,%p)\n", hdc, hObj );
EnterCriticalSection( &gdi_section );
if ((entry = handle_entry( hObj ))) funcs = entry->funcs;
if ((entry = handle_entry( hObj )))
{
funcs = entry->funcs;
hObj = entry_to_handle( entry ); /* make it a full handle */
}
LeaveCriticalSection( &gdi_section );
if (funcs && funcs->pSelectObject) return funcs->pSelectObject( hObj, hdc );
@ -1104,11 +1138,15 @@ HGDIOBJ WINAPI SelectObject( HDC hdc, HGDIOBJ hObj )
*/
BOOL WINAPI UnrealizeObject( HGDIOBJ obj )
{
struct gdi_handle_entry *entry;
const struct gdi_obj_funcs *funcs = NULL;
struct gdi_handle_entry *entry;
EnterCriticalSection( &gdi_section );
if ((entry = handle_entry( obj ))) funcs = entry->funcs;
if ((entry = handle_entry( obj )))
{
funcs = entry->funcs;
obj = entry_to_handle( entry ); /* make it a full handle */
}
LeaveCriticalSection( &gdi_section );
if (funcs && funcs->pUnrealizeObject) return funcs->pUnrealizeObject( obj );

2
dlls/gdi32/mfdrv/objects.c
View File

@ -49,7 +49,7 @@ UINT MFDRV_AddHandle( PHYSDEV dev, HGDIOBJ obj )
physDev->handles,
physDev->handles_size * sizeof(physDev->handles[0]));
}
physDev->handles[index] = obj;
physDev->handles[index] = get_full_gdi_handle( obj );
physDev->cur_handles++;
if(physDev->cur_handles > physDev->mh->mtNoObjects)

3
dlls/gdi32/palette.c
View File

@ -238,6 +238,7 @@ UINT WINAPI SetPaletteEntries(
TRACE("hpal=%p,start=%i,count=%i\n",hpalette,start,count );
hpalette = get_full_gdi_handle( hpalette );
if (hpalette == GetStockObject(DEFAULT_PALETTE)) return 0;
palPtr = GDI_GetObjPtr( hpalette, OBJ_PAL );
if (!palPtr) return 0;
@ -310,6 +311,7 @@ BOOL WINAPI AnimatePalette(
{
TRACE("%p (%i - %i)\n", hPal, StartIndex,StartIndex+NumEntries);
hPal = get_full_gdi_handle( hPal );
if( hPal != GetStockObject(DEFAULT_PALETTE) )
{
PALETTEOBJ * palPtr;
@ -590,6 +592,7 @@ HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg)
TRACE("%p %p\n", hdc, hpal );
hpal = get_full_gdi_handle( hpal );
if (GetObjectType(hpal) != OBJ_PAL)
{
WARN("invalid selected palette %p\n",hpal);