shm: add shm_did_not_use_buffer()

This allows a caller to return a buffer (obtained with
shm_get_buffer()) to the pool,

The buffer must not have been used. I.e. it must not have been
attached and committed to a wayland surface.
This commit is contained in:
Daniel Eklöf 2022-04-16 17:47:56 +02:00
parent 129deaffa8
commit abbdd3bae8
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2 changed files with 9 additions and 0 deletions

2
shm.h
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@ -66,6 +66,8 @@ void shm_get_many(
int widths[static count], int heights[static count],
struct buffer *bufs[static count]);
void shm_did_not_use_buf(struct buffer *buf);
bool shm_can_scroll(const struct buffer *buf);
bool shm_scroll(struct buffer *buf, int rows,
int top_margin, int top_keep_rows,