Function del_front_log

lightningd/log.c:249–264

			  node_id_map);

static void del_front_log(struct log_book *log)
{
	struct log_hdr hdr;
	void *buf1, *buf2;
	size_t buf1len, buf2len;

	ringbuf_span(log, log->ringbuf_start, sizeof(hdr),
		     &buf1, &buf1len, &buf2, &buf2len);
	copy_from(&hdr, sizeof(hdr), buf1, buf1len, buf2, buf2len);
	assert(ringbuf_used(log) >= sizeof(hdr) + hdr.msglen + hdr.iolen);
	log->ringbuf_start += sizeof(hdr) + hdr.msglen + hdr.iolen;

	if (hdr.nc && --hdr.nc->count == 0)
		tal_free(hdr.nc);
	log_prefix_drop(hdr.prefix);
}

/* We truncate genuinely giant messages */
static char *cap_header(const tal_t *ctx, struct log_hdr *hdr, const char *msg)