diff options
| author | Keith Packard <keithp@keithp.com> | 2016-11-15 20:18:59 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2017-02-20 11:16:51 -0800 |
| commit | 881161fe1c5fb0e2b1220c30572eb2c45bedbafe (patch) | |
| tree | 36070649f2e3d46de239f769cc67cc765f3b9c9a /src/lisp/ao_lisp_eval.c | |
| parent | 994adc7a47cbf3cbf6041eca7430273f8018de08 (diff) | |
altos/lisp: re-use small frames
This saves a pile more use of the allocator by noting when frames have
not been referenced from another frame and freeing them when they go
out of scope. Frames with references are left to the allocator to deal
with.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/lisp/ao_lisp_eval.c')
| -rw-r--r-- | src/lisp/ao_lisp_eval.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/lisp/ao_lisp_eval.c b/src/lisp/ao_lisp_eval.c index 3af56796..6f56a120 100644 --- a/src/lisp/ao_lisp_eval.c +++ b/src/lisp/ao_lisp_eval.c @@ -122,7 +122,8 @@ ao_lisp_stack_push(void) static void ao_lisp_stack_pop(void) { - ao_poly prev; + ao_poly prev; + struct ao_lisp_frame *prev_frame; if (!ao_lisp_stack) return; @@ -131,10 +132,13 @@ ao_lisp_stack_pop(void) ao_lisp_stack_free_list = ao_lisp_stack; ao_lisp_stack = ao_lisp_poly_stack(prev); + prev_frame = ao_lisp_frame_current; if (ao_lisp_stack) ao_lisp_frame_current = ao_lisp_poly_frame(ao_lisp_stack->frame); else ao_lisp_frame_current = NULL; + if (ao_lisp_frame_current != prev_frame) + ao_lisp_frame_free(prev_frame); DBG_OUT(); DBGI("stack pop\n"); DBG_FRAMES(); |