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[GLX] Implement screen-pointer mapping helper functions

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Brian Nguyen 2013-08-12 13:12:09 -07:00 committed by brnguyen
parent 74c9644124
commit a7ca3457a9
1 changed files with 74 additions and 4 deletions
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78
src/GLX/libglxmapping.c
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@ -360,22 +360,92 @@ __GLXdispatchTableDynamic *__glXGetDynDispatch(Display *dpy, const int screen)
}
}
/****************************************************************************/
/*
* __glXScreenPointerMappingHash is a hash table that maps a void*
* (either GLXContext or GLXFBConfig) to a screen index. Note this
* stores both GLXContext and GLXFBConfig in this table.
*/
typedef struct {
void *ptr;
int screen;
UT_hash_handle hh;
} __GLXscreenPointerMappingHash;
static DEFINE_INITIALIZED_LKDHASH(__GLXscreenPointerMappingHash, __glXScreenPointerMappingHash);
static void AddScreenPointerMapping(void *ptr, int screen)
{
// TODO
__GLXscreenPointerMappingHash *pEntry;
if (ptr == NULL) {
return;
}
if (screen < 0) {
return;
}
LKDHASH_WRLOCK(__glXPthreadFuncs, __glXScreenPointerMappingHash);
HASH_FIND_PTR(_LH(__glXScreenPointerMappingHash), &ptr, pEntry);
if (pEntry == NULL) {
pEntry = malloc(sizeof(*pEntry));
pEntry->ptr = ptr;
pEntry->screen = screen;
HASH_ADD_PTR(_LH(__glXScreenPointerMappingHash), ptr, pEntry);
} else {
pEntry->screen = screen;
}
LKDHASH_UNLOCK(__glXPthreadFuncs, __glXScreenPointerMappingHash);
}
static void RemoveScreenPointerMapping(void *ptr, int screen)
{
// TODO
__GLXscreenPointerMappingHash *pEntry;
if (ptr == NULL) {
return;
}
if (screen < 0) {
return;
}
LKDHASH_WRLOCK(__glXPthreadFuncs, __glXScreenPointerMappingHash);
HASH_FIND(hh, _LH(__glXScreenPointerMappingHash), ptr, sizeof(ptr), pEntry);
if (pEntry != NULL) {
HASH_DELETE(hh, _LH(__glXScreenPointerMappingHash), pEntry);
free(pEntry);
}
LKDHASH_UNLOCK(__glXPthreadFuncs, __glXScreenPointerMappingHash);
}
static int ScreenFromPointer(void *ptr)
{
// TODO
return -1;
__GLXscreenPointerMappingHash *pEntry;
int screen = -1;
LKDHASH_RDLOCK(__glXPthreadFuncs, __glXScreenPointerMappingHash);
HASH_FIND(hh, _LH(__glXScreenPointerMappingHash), &ptr, sizeof(ptr), pEntry);
if (pEntry != NULL) {
screen = pEntry->screen;
}
LKDHASH_UNLOCK(__glXPthreadFuncs, __glXScreenPointerMappingHash);
return screen;
}