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(!1714) exa: use PixmapDestroy hook 

Wrapping ScreenRec's function pointers is problematic for many reasons,
so use the new pixmap destroy notify hook instead.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult 2024-10-04 17:56:04 +02:00
parent 987f37270b
commit c248346e78
5 changed files with 52 additions and 94 deletions
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16
exa/exa.c
View File

@ -740,6 +740,11 @@ exaCloseScreen(ScreenPtr pScreen)
ExaScreenPriv(pScreen);
PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
/* doesn't matter which one actually was registered */
dixScreenUnhookPixmapDestroy(pScreen, exaPixmapDestroy_classic, 0);
dixScreenUnhookPixmapDestroy(pScreen, exaPixmapDestroy_driver, 0);
dixScreenUnhookPixmapDestroy(pScreen, exaPixmapDestroy_mixed, 0);
if (ps->Glyphs == exaGlyphs)
exaGlyphsFini(pScreen);
@ -753,8 +758,6 @@ exaCloseScreen(ScreenPtr pScreen)
unwrap(pExaScr, pScreen, GetSpans);
if (pExaScr->SavedCreatePixmap)
unwrap(pExaScr, pScreen, CreatePixmap);
if (pExaScr->SavedDestroyPixmap)
unwrap(pExaScr, pScreen, DestroyPixmap);
if (pExaScr->SavedModifyPixmapHeader)
unwrap(pExaScr, pScreen, ModifyPixmapHeader);
unwrap(pExaScr, pScreen, CopyWindow);
@ -955,8 +958,9 @@ exaDriverInit(ScreenPtr pScreen, ExaDriverPtr pScreenInfo)
}
if (pExaScr->info->flags & EXA_HANDLES_PIXMAPS) {
if (pExaScr->info->flags & EXA_MIXED_PIXMAPS) {
dixScreenHookPixmapDestroy(pScreen, exaPixmapDestroy_mixed, 0);
wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_mixed);
wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_mixed);
wrap(pExaScr, pScreen, ModifyPixmapHeader,
exaModifyPixmapHeader_mixed);
wrap(pExaScr, pScreen, SharePixmapBacking, exaSharePixmapBacking_mixed);
@ -969,8 +973,9 @@ exaDriverInit(ScreenPtr pScreen, ExaDriverPtr pScreenInfo)
pExaScr->prepare_access_reg = exaPrepareAccessReg_mixed;
}
else {
dixScreenHookPixmapDestroy(pScreen, exaPixmapDestroy_driver, 0);
wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_driver);
wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_driver);
wrap(pExaScr, pScreen, ModifyPixmapHeader,
exaModifyPixmapHeader_driver);
pExaScr->do_migration = NULL;
@ -981,8 +986,9 @@ exaDriverInit(ScreenPtr pScreen, ExaDriverPtr pScreenInfo)
}
}
else {
dixScreenHookPixmapDestroy(pScreen, exaPixmapDestroy_classic, 0);
wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_classic);
wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_classic);
wrap(pExaScr, pScreen, ModifyPixmapHeader,
exaModifyPixmapHeader_classic);
pExaScr->do_migration = exaDoMigration_classic;

20
exa/exa_classic.c
View File

@ -206,18 +206,11 @@ exaModifyPixmapHeader_classic(PixmapPtr pPixmap, int width, int height,
return ret;
}
Bool
exaDestroyPixmap_classic(PixmapPtr pPixmap)
void exaPixmapDestroy_classic(ScreenPtr pScreen, PixmapPtr pPixmap, void *arg)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
ExaScreenPriv(pScreen);
Bool ret = TRUE;
if (pPixmap->refcnt == 1) {
ExaPixmapPriv(pPixmap);
if (!pExaPixmap) // we're called on an error path
goto out;
return;
exaDestroyPixmap(pPixmap);
@ -233,15 +226,6 @@ exaDestroyPixmap_classic(PixmapPtr pPixmap)
}
RegionUninit(&pExaPixmap->validSys);
RegionUninit(&pExaPixmap->validFB);
}
out:
// restore original (screen driver's) DestroyPixmap() handler and call it
swap(pExaScr, pScreen, DestroyPixmap);
dixDestroyPixmap(pPixmap, 0);
swap(pExaScr, pScreen, DestroyPixmap);
return ret;
}
Bool

18
exa/exa_driver.c
View File

@ -185,33 +185,19 @@ exaModifyPixmapHeader_driver(PixmapPtr pPixmap, int width, int height,
return ret;
}
Bool
exaDestroyPixmap_driver(PixmapPtr pPixmap)
void exaPixmapDestroy_driver(ScreenPtr pScreen, PixmapPtr pPixmap, void *arg)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
ExaScreenPriv(pScreen);
Bool ret = TRUE;
if (pPixmap->refcnt == 1) {
ExaPixmapPriv(pPixmap);
if (!pExaPixmap) // we're called on an error path
goto out;
return;
exaDestroyPixmap(pPixmap);
if (pExaPixmap->driverPriv)
pExaScr->info->DestroyPixmap(pScreen, pExaPixmap->driverPriv);
pExaPixmap->driverPriv = NULL;
}
out:
// restore original (screen driver's) DestroyPixmap() handler and call it
swap(pExaScr, pScreen, DestroyPixmap);
dixDestroyPixmap(pPixmap, 0);
swap(pExaScr, pScreen, DestroyPixmap);
return ret;
}
Bool

20
exa/exa_mixed.c
View File

@ -239,18 +239,13 @@ exaModifyPixmapHeader_mixed(PixmapPtr pPixmap, int width, int height, int depth,
return ret;
}
Bool
exaDestroyPixmap_mixed(PixmapPtr pPixmap)
void exaPixmapDestroy_mixed(ScreenPtr pScreen, PixmapPtr pPixmap, void *arg)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
ExaScreenPriv(pScreen);
Bool ret = TRUE;
if (pPixmap->refcnt == 1) {
ExaPixmapPriv(pPixmap);
if (!pExaPixmap)
goto out; // we're called on an error path
if (!pExaPixmap) // we're called on an error path
return;
exaDestroyPixmap(pPixmap);
@ -266,15 +261,6 @@ exaDestroyPixmap_mixed(PixmapPtr pPixmap)
pExaPixmap->sys_ptr = NULL;
pExaPixmap->pDamage = NULL;
}
}
out:
// restore original (screen driver's) DestroyPixmap() handler and call it
swap(pExaScr, pScreen, DestroyPixmap);
dixDestroyPixmap(pPixmap, 0);
swap(pExaScr, pScreen, DestroyPixmap);
return ret;
}
Bool

10
exa/exa_priv.h
View File

@ -156,7 +156,6 @@ typedef struct {
GetImageProcPtr SavedGetImage;
GetSpansProcPtr SavedGetSpans;
CreatePixmapProcPtr SavedCreatePixmap;
DestroyPixmapProcPtr SavedDestroyPixmap;
CopyWindowProcPtr SavedCopyWindow;
ChangeWindowAttributesProcPtr SavedChangeWindowAttributes;
BitmapToRegionProcPtr SavedBitmapToRegion;
@ -590,8 +589,7 @@ exaModifyPixmapHeader_classic(PixmapPtr pPixmap, int width, int height,
int depth, int bitsPerPixel, int devKind,
void *pPixData);
Bool
exaDestroyPixmap_classic(PixmapPtr pPixmap);
void exaPixmapDestroy_classic(ScreenPtr pScreen, PixmapPtr pPixmap, void *arg);
Bool
exaPixmapHasGpuCopy_classic(PixmapPtr pPixmap);
@ -608,8 +606,7 @@ exaModifyPixmapHeader_driver(PixmapPtr pPixmap, int width, int height,
int depth, int bitsPerPixel, int devKind,
void *pPixData);
Bool
exaDestroyPixmap_driver(PixmapPtr pPixmap);
void exaPixmapDestroy_driver(ScreenPtr pScreen, PixmapPtr pPixmap, void *arg);
Bool
exaPixmapHasGpuCopy_driver(PixmapPtr pPixmap);
@ -625,8 +622,7 @@ Bool
exaModifyPixmapHeader_mixed(PixmapPtr pPixmap, int width, int height, int depth,
int bitsPerPixel, int devKind, void *pPixData);
Bool
exaDestroyPixmap_mixed(PixmapPtr pPixmap);
void exaPixmapDestroy_mixed(ScreenPtr pScreen, PixmapPtr pPixmap, void *arg);
Bool
exaPixmapHasGpuCopy_mixed(PixmapPtr pPixmap);