Aurelien
/
xf86-video-intel
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

sna/trapezoids: Embed a few cells into the stack 

Avoid an allocation in the common case where the set of trapezoids is
fairly narrow.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-02-20 12:00:54 +00:00
parent 3eca4ea1a5
commit 14de90b251
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/sna/sna_trapezoids.c
View File

@ -264,6 +264,7 @@ struct cell_list {
int16_t count, size;
struct cell *cells;
struct cell embedded[256];
};
/* The active list contains edges in the current scan line ordered by
@ -339,14 +340,17 @@ cell_list_init(struct cell_list *cells, int width)
cell_list_rewind(cells);
cells->count = 0;
cells->size = width+1;
cells->cells = malloc(cells->size * sizeof(struct cell));
cells->cells = cells->embedded;
if (cells->size > ARRAY_SIZE(cells->embedded))
cells->cells = malloc(cells->size * sizeof(struct cell));
return cells->cells != NULL;
}
static void
cell_list_fini(struct cell_list *cells)
{
free(cells->cells);
if (cells->cells != cells->embedded)
free(cells->cells);
}
inline static void