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Some trivial optimizations.

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This commit is contained in:
Nicholas Marriott
2026-06-16 23:31:52 +01:00
parent 9212ecea84
commit 2ce8ff9e6d
2 changed files with 38 additions and 11 deletions
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21
screen-redraw.c
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@@ -164,6 +164,9 @@ struct redraw_build_cell {
struct redraw_span_data data;
};
static struct redraw_build_cell *screen_redraw_cells;
static size_t screen_redraw_ncells;
/* Context for building the scene. */
struct redraw_build_ctx {
struct client *c;
@@ -864,22 +867,24 @@ screen_redraw_make_scene(struct client *c)
if (bctx.sx != 0 && bctx.sy > SIZE_MAX / bctx.sx)
fatalx("%s: too many cells", __func__);
ncells = (size_t)bctx.sx * bctx.sy;
if (ncells > SIZE_MAX / sizeof *bctx.cells)
fatalx("%s: too many cells", __func__);
bctx.cells = xmalloc(ncells * sizeof *bctx.cells);
if (ncells > screen_redraw_ncells) {
screen_redraw_cells = xreallocarray(screen_redraw_cells, ncells,
sizeof *screen_redraw_cells);
screen_redraw_ncells = ncells;
}
bctx.cells = screen_redraw_cells;
for (y = 0; y < bctx.sy; y++) {
for (x = 0; x < bctx.sx; x++)
screen_redraw_reset_cell(&bctx, x, y);
}
TAILQ_FOREACH_REVERSE(wp, &bctx.w->z_index, window_panes_zindex, zentry)
screen_redraw_mark_pane(&bctx, wp);
screen_redraw_mark_pane(&bctx, wp);
screen_redraw_mark_two_pane_colours(&bctx);
screen_redraw_finish_scene(&bctx, scene);
log_debug("%s: finished @%u scene build", c->name, scene->w->id);
free(bctx.cells);
return (scene);
}
@@ -1463,8 +1468,10 @@ screen_redraw_draw(struct client *c, struct window_pane *wp, int flags)
}
}
log_debug("%s: starting @%u redraw (%s)", c->name, w->id,
screen_redraw_flags_string(flags));
if (log_get_level() != 0) {
log_debug("%s: starting @%u redraw (%s)", c->name, w->id,
screen_redraw_flags_string(flags));
}
scene = screen_redraw_get_scene(c);
if (scene == NULL)