xserver-multidpi/dix/privates.c

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/*
Copyright 1993, 1998 The Open Group
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <stddef.h>
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#include "windowstr.h"
#include "resource.h"
#include "privates.h"
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#include "gcstruct.h"
#include "cursorstr.h"
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#include "colormapst.h"
#include "inputstr.h"
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struct _Private {
int state;
pointer value;
};
typedef struct _PrivateDesc {
DevPrivateKey key;
unsigned size;
CallbackListPtr initfuncs;
CallbackListPtr deletefuncs;
} PrivateDescRec;
#define PRIV_MAX 256
#define PRIV_STEP 16
/* list of all allocated privates */
static PrivateDescRec items[PRIV_MAX];
static int nextPriv;
static PrivateDescRec *
findItem(const DevPrivateKey key)
{
if (!*key) {
if (nextPriv >= PRIV_MAX)
return NULL;
items[nextPriv].key = key;
*key = nextPriv;
nextPriv++;
}
return items + *key;
}
static _X_INLINE int
privateExists(PrivateRec **privates, const DevPrivateKey key)
{
return *key && *privates &&
(*privates)[0].state > *key &&
(*privates)[*key].state;
}
/*
* Request pre-allocated space.
*/
_X_EXPORT int
dixRequestPrivate(const DevPrivateKey key, unsigned size)
{
PrivateDescRec *item = findItem(key);
if (!item)
return FALSE;
if (size > item->size)
item->size = size;
return TRUE;
}
/*
* Allocate a private and attach it to an existing object.
*/
_X_EXPORT pointer *
dixAllocatePrivate(PrivateRec **privates, const DevPrivateKey key)
{
PrivateDescRec *item = findItem(key);
PrivateCallbackRec calldata;
PrivateRec *ptr;
pointer value;
int oldsize, newsize;
newsize = (*key / PRIV_STEP + 1) * PRIV_STEP;
/* resize or init privates array */
if (!item)
return NULL;
/* initialize privates array if necessary */
if (!*privates) {
ptr = xcalloc(newsize, sizeof(*ptr));
if (!ptr)
return NULL;
*privates = ptr;
(*privates)[0].state = newsize;
}
oldsize = (*privates)[0].state;
/* resize privates array if necessary */
if (*key >= oldsize) {
ptr = xrealloc(*privates, newsize * sizeof(*ptr));
if (!ptr)
return NULL;
memset(ptr + oldsize, 0, (newsize - oldsize) * sizeof(*ptr));
*privates = ptr;
(*privates)[0].state = newsize;
}
/* initialize slot */
ptr = *privates + *key;
ptr->state = 1;
if (item->size) {
value = xcalloc(item->size, 1);
if (!value)
return NULL;
ptr->value = value;
}
calldata.key = key;
calldata.value = &ptr->value;
CallCallbacks(&item->initfuncs, &calldata);
return &ptr->value;
}
/*
* Look up a private pointer.
*/
_X_EXPORT pointer
dixLookupPrivate(PrivateRec **privates, const DevPrivateKey key)
{
pointer *ptr;
if (privateExists(privates, key))
return (*privates)[*key].value;
ptr = dixAllocatePrivate(privates, key);
return ptr ? *ptr : NULL;
}
/*
* Look up the address of a private pointer.
*/
_X_EXPORT pointer *
dixLookupPrivateAddr(PrivateRec **privates, const DevPrivateKey key)
{
if (privateExists(privates, key))
return &(*privates)[*key].value;
return dixAllocatePrivate(privates, key);
}
/*
* Set a private pointer.
*/
_X_EXPORT int
dixSetPrivate(PrivateRec **privates, const DevPrivateKey key, pointer val)
{
top:
if (privateExists(privates, key)) {
(*privates)[*key].value = val;
return TRUE;
}
if (!dixAllocatePrivate(privates, key))
return FALSE;
goto top;
}
/*
* Called to free privates at object deletion time.
*/
_X_EXPORT void
dixFreePrivates(PrivateRec *privates)
{
int i;
PrivateCallbackRec calldata;
if (privates)
for (i = 1; i < privates->state; i++)
if (privates[i].state) {
/* call the delete callbacks */
calldata.key = items[i].key;
calldata.value = &privates[i].value;
CallCallbacks(&items[i].deletefuncs, &calldata);
/* free pre-allocated memory */
if (items[i].size)
xfree(privates[i].value);
}
xfree(privates);
}
/*
* Callback registration
*/
_X_EXPORT int
dixRegisterPrivateInitFunc(const DevPrivateKey key,
CallbackProcPtr callback, pointer data)
{
PrivateDescRec *item = findItem(key);
if (!item)
return FALSE;
return AddCallback(&item->initfuncs, callback, data);
}
_X_EXPORT int
dixRegisterPrivateDeleteFunc(const DevPrivateKey key,
CallbackProcPtr callback, pointer data)
{
PrivateDescRec *item = findItem(key);
if (!item)
return FALSE;
return AddCallback(&item->deletefuncs, callback, data);
}
/* Table of devPrivates offsets */
static const int offsetDefaults[] = {
-1, /* RT_NONE */
offsetof(WindowRec, devPrivates), /* RT_WINDOW */
offsetof(PixmapRec, devPrivates), /* RT_PIXMAP */
offsetof(GC, devPrivates), /* RT_GC */
-1, /* RT_FONT */
offsetof(CursorRec, devPrivates), /* RT_CURSOR */
offsetof(ColormapRec, devPrivates), /* RT_COLORMAP */
-1, /* RT_CMAPENTRY */
-1, /* RT_OTHERCLIENT */
-1 /* RT_PASSIVEGRAB */
};
static int *offsets = NULL;
static int offsetsSize = 0;
/*
* Specify where the devPrivates field is located in a structure type
*/
_X_EXPORT int
dixRegisterPrivateOffset(RESTYPE type, int offset)
{
type = type & TypeMask;
/* resize offsets table if necessary */
while (type >= offsetsSize) {
unsigned i = offsetsSize * 2 * sizeof(int);
offsets = (int *)xrealloc(offsets, i);
if (!offsets) {
offsetsSize = 0;
return FALSE;
}
for (i=offsetsSize; i < 2*offsetsSize; i++)
offsets[i] = -1;
offsetsSize *= 2;
}
offsets[type] = offset;
return TRUE;
}
_X_EXPORT int
dixLookupPrivateOffset(RESTYPE type)
{
type = type & TypeMask;
assert(type < offsetsSize);
return offsets[type];
}
Export symbols defined in the sdk. This is the biggest "visibility" patch. Instead of doing a "export" symbol on demand, export everything in the sdk, so that if some module fails due to an unresolved symbol, it is because it is using a symbol not in the sdk. Most exported symbols shouldn't really be made visible, neither advertised in the sdk, as they are only used by a single shared object. Symbols in the sdk (or referenced in sdk macros), but not defined anywhere include: XkbBuildCoreState() XkbInitialMap XkbXIUnsupported XkbCheckActionVMods() XkbSendCompatNotify() XkbDDXFakePointerButton() XkbDDXApplyConfig() _XkbStrCaseCmp() _XkbErrMessages[] _XkbErrCode _XkbErrLocation _XkbErrData XkbAccessXDetailText() XkbNKNDetailMaskText() XkbLookupGroupAndLevel() XkbInitAtoms() XkbGetOrderedDrawables() XkbFreeOrderedDrawables() XkbConvertXkbComponents() XkbWriteXKBSemantics() XkbWriteXKBLayout() XkbWriteXKBKeymap() XkbWriteXKBFile() XkbWriteCFile() XkbWriteXKMFile() XkbWriteToServer() XkbMergeFile() XkmFindTOCEntry() XkmReadFileSection() XkmReadFileSectionName() InitExtInput() xf86CheckButton() xf86SwitchCoreDevice() RamDacSetGamma() RamDacRestoreDACValues() xf86Bpp xf86ConfigPix24 xf86MouseCflags[] xf86SupportedMouseTypes[] xf86NumMouseTypes xf86ChangeBusIndex() xf86EntityEnter() xf86EntityLeave() xf86WrapperInit() xf86RingBell() xf86findOptionBoolean() xf86debugListOptions() LoadSubModuleLocal() LoaderSymbolLocal() getInt10Rec() xf86CurrentScreen xf86ReallocatePciResources() xf86NewSerialNumber() xf86RandRSetInitialMode() fbCompositeSolidMask_nx1xn fbCompositeSolidMask_nx8888x0565C fbCompositeSolidMask_nx8888x8888C fbCompositeSolidMask_nx8x0565 fbCompositeSolidMask_nx8x0888 fbCompositeSolidMask_nx8x8888 fbCompositeSrc_0565x0565 fbCompositeSrc_8888x0565 fbCompositeSrc_8888x0888 fbCompositeSrc_8888x8888 fbCompositeSrcAdd_1000x1000 fbCompositeSrcAdd_8000x8000 fbCompositeSrcAdd_8888x8888 fbGeneration fbIn fbOver fbOver24 fbOverlayGeneration fbRasterizeEdges fbRestoreAreas fbSaveAreas composeFunctions VBEBuildVbeModeList() VBECalcVbeModeIndex() TIramdac3030CalculateMNPForClock() shadowBufPtr shadowFindBuf() miRRGetScreenInfo() RRSetScreenConfig() RRModePruneUnused() PixmanImageFromPicture() extern int miPointerGetMotionEvents() miClipPicture() miRasterizeTriangle() fbPush1toN() fbInitializeBackingStore() ddxBeforeReset() SetupSprite() InitSprite() DGADeliverEvent() SPECIAL CASES o defined as _X_INTERNAL xf86NewInputDevice() o defined as static fbGCPrivateKey fbOverlayScreenPrivateKey fbScreenPrivateKey fbWinPrivateKey o defined in libXfont.so, but declared in xorg/dixfont.h GetGlyphs() QueryGlyphExtents() QueryTextExtents() ParseGlyphCachingMode() InitGlyphCaching() SetGlyphCachingMode()
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_X_EXPORT int
dixResetPrivates(void)
{
int i;
/* reset private descriptors */
for (i = 1; i < nextPriv; i++) {
*items[i].key = 0;
DeleteCallbackList(&items[i].initfuncs);
DeleteCallbackList(&items[i].deletefuncs);
}
nextPriv = 1;
/* reset offsets */
if (offsets)
xfree(offsets);
offsetsSize = sizeof(offsetDefaults);
offsets = (int *)xalloc(offsetsSize);
offsetsSize /= sizeof(int);
if (!offsets)
return FALSE;
memcpy(offsets, offsetDefaults, sizeof(offsetDefaults));
return TRUE;
}