33 abuf_init(struct abuf *buf, unsigned int len)  in abuf_init()  argument
35 	buf->data = xmalloc(len);  in abuf_init()
36 	buf->len = len;  in abuf_init()
37 	buf->used = 0;  in abuf_init()
38 	buf->start = 0;  in abuf_init()
42 abuf_done(struct abuf *buf)  in abuf_done()  argument
45 	if (buf->used > 0)  in abuf_done()
46 		logx(3, "deleting non-empty buffer, used = %d", buf->used);  in abuf_done()
48 	xfree(buf->data);  in abuf_done()
49 	buf->data = (void *)0xdeadbeef;  in abuf_done()
56 abuf_rgetblk(struct abuf *buf, int *rsize)  in abuf_rgetblk()  argument
60 	count = buf->len - buf->start;  in abuf_rgetblk()
61 	if (count > buf->used)  in abuf_rgetblk()
62 		count = buf->used;  in abuf_rgetblk()
64 	return buf->data + buf->start;  in abuf_rgetblk()
71 abuf_rdiscard(struct abuf *buf, int count)  in abuf_rdiscard()  argument
74 	if (count < 0 || count > buf->used) {  in abuf_rdiscard()
79 	buf->used -= count;  in abuf_rdiscard()
80 	buf->start += count;  in abuf_rdiscard()
81 	if (buf->start >= buf->len)  in abuf_rdiscard()
82 		buf->start -= buf->len;  in abuf_rdiscard()
89 abuf_wcommit(struct abuf *buf, int count)  in abuf_wcommit()  argument
92 	if (count < 0 || count > (buf->len - buf->used)) {  in abuf_wcommit()
97 	buf->used += count;  in abuf_wcommit()
104 abuf_wgetblk(struct abuf *buf, int *rsize)  in abuf_wgetblk()  argument
108 	end = buf->start + buf->used;  in abuf_wgetblk()
109 	if (end >= buf->len)  in abuf_wgetblk()
110 		end -= buf->len;  in abuf_wgetblk()
111 	avail = buf->len - buf->used;  in abuf_wgetblk()
112 	count = buf->len - end;  in abuf_wgetblk()
116 	return buf->data + end;  in abuf_wgetblk()