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dix: Fix wrong cursor refcount.

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Calloc cursor struct to ensure devPrivates are zeroed out and don't
        increase the refcnt for devices automatically when allocating a new
        cursor. Use new DeviceIsPointerType() to detect if device is a pointer
        _before_ device has been activated and can thus be identified and set
        up grab functions accordingly. This way we can increase the refcnt
        when we get a pointer grab.
This commit is contained in:
Peter Hutterer
2007-03-30 14:59:43 +09:30
parent 20e4314b17
commit 63d8f01819
6 changed files with 34 additions and 39 deletions
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47
dix/cursor.c
View File

@@ -179,7 +179,7 @@ AllocCursorARGB(unsigned char *psrcbits, unsigned char *pmaskbits, CARD32 *argb,
ScreenPtr pscr;
DeviceIntPtr pDev;
pCurs = (CursorPtr)xalloc(sizeof(CursorRec) + sizeof(CursorBits));
pCurs = (CursorPtr)xcalloc(sizeof(CursorRec) + sizeof(CursorBits), 1);
if (!pCurs)
{
xfree(psrcbits);
@@ -196,7 +196,7 @@ AllocCursorARGB(unsigned char *psrcbits, unsigned char *pmaskbits, CARD32 *argb,
bits->height = cm->height;
bits->xhot = cm->xhot;
bits->yhot = cm->yhot;
pCurs->refcnt = 0;
pCurs->refcnt = 1;
CheckForEmptyMask(bits);
pCurs->bits = bits;
@@ -215,6 +215,8 @@ AllocCursorARGB(unsigned char *psrcbits, unsigned char *pmaskbits, CARD32 *argb,
/*
* realize the cursor for every screen
* Do not change the refcnt, this will be changed when ChangeToCursor
* actually changes the sprite.
*/
for (nscr = 0; nscr < screenInfo.numScreens; nscr++)
{
@@ -223,7 +225,6 @@ AllocCursorARGB(unsigned char *psrcbits, unsigned char *pmaskbits, CARD32 *argb,
{
if (DevHasCursor(pDev))
{
pCurs->refcnt++;
if (!( *pscr->RealizeCursor)(pDev, pscr, pCurs))
{
/* Realize failed for device pDev on screen pscr.
@@ -325,7 +326,7 @@ AllocGlyphCursor(Font source, unsigned sourceChar, Font mask, unsigned maskChar,
}
if (pShare)
{
pCurs = (CursorPtr)xalloc(sizeof(CursorRec));
pCurs = (CursorPtr)xcalloc(sizeof(CursorRec), 1);
if (!pCurs)
return BadAlloc;
bits = pShare->bits;
@@ -367,7 +368,8 @@ AllocGlyphCursor(Font source, unsigned sourceChar, Font mask, unsigned maskChar,
}
if (sourcefont != maskfont)
{
pCurs = (CursorPtr)xalloc(sizeof(CursorRec) + sizeof(CursorBits));
pCurs =
(CursorPtr)xcalloc(sizeof(CursorRec) + sizeof(CursorBits), 1);
if (pCurs)
bits = (CursorBitsPtr)((char *)pCurs + sizeof(CursorRec));
else
@@ -375,9 +377,9 @@ AllocGlyphCursor(Font source, unsigned sourceChar, Font mask, unsigned maskChar,
}
else
{
pCurs = (CursorPtr)xalloc(sizeof(CursorRec));
pCurs = (CursorPtr)xcalloc(sizeof(CursorRec), 1);
if (pCurs)
bits = (CursorBitsPtr)xalloc(sizeof(CursorBits));
bits = (CursorBitsPtr)xcalloc(sizeof(CursorBits), 1);
else
bits = (CursorBitsPtr)NULL;
}
@@ -417,9 +419,10 @@ AllocGlyphCursor(Font source, unsigned sourceChar, Font mask, unsigned maskChar,
sharedGlyphs = pShare;
}
}
CheckForEmptyMask(bits);
pCurs->bits = bits;
pCurs->refcnt = 0;
pCurs->refcnt = 1;
#ifdef XFIXES
pCurs->serialNumber = ++cursorSerial;
pCurs->name = None;
@@ -440,38 +443,10 @@ AllocGlyphCursor(Font source, unsigned sourceChar, Font mask, unsigned maskChar,
{
pscr = screenInfo.screens[nscr];
pCurs->refcnt++;
if (!(*pscr->RealizeCursor)(inputInfo.pointer, pscr, pCurs))
{
DeviceIntPtr pDevIt = inputInfo.devices; /*dev iterator*/
/* Realize for core pointer failed. Unrealize everything from
* previous screens.
*/
while (--nscr >= 0)
{
pscr = screenInfo.screens[nscr];
/* now unrealize all devices on previous screens */
( *pscr->UnrealizeCursor)(inputInfo.pointer, pscr, pCurs);
pDevIt = inputInfo.devices;
while (pDevIt)
{
if (DevHasCursor(pDevIt))
( *pscr->UnrealizeCursor)(pDevIt, pscr, pCurs);
pDevIt = pDevIt->next;
}
( *pscr->UnrealizeCursor)(pDev, pscr, pCurs);
}
FreeCursorBits(bits);
xfree(pCurs);
return BadAlloc;
}
for (pDev = inputInfo.devices; pDev; pDev = pDev->next)
{
if (DevHasCursor(pDev))
{
pCurs->refcnt++;
if (!( *pscr->RealizeCursor)(pDev, pscr, pCurs))
{
/* Realize failed for device pDev on screen pscr.

1
dix/events.c
View File

@@ -4024,7 +4024,6 @@ ProcGrabPointer(ClientPtr client)
oldCursor = grab->cursor;
}
tempGrab.cursor = cursor;
/* FIXME: refcnt?? */
tempGrab.resource = client->clientAsMask;
tempGrab.ownerEvents = stuff->ownerEvents;
tempGrab.eventMask = stuff->eventMask;