14 int buf_init (circbuf_t * buf, unsigned int size)  in buf_init()  argument
16 	assert (buf != NULL);  in buf_init()
18 	buf->size = 0;  in buf_init()
19 	buf->totalsize = size;  in buf_init()
20 	buf->data = (char *) malloc (sizeof (char) * size);  in buf_init()
21 	assert (buf->data != NULL);  in buf_init()
23 	buf->top = buf->data;  in buf_init()
24 	buf->tail = buf->data;  in buf_init()
25 	buf->end = &(buf->data[size]);  in buf_init()
30 int buf_free (circbuf_t * buf)  in buf_free()  argument
32 	assert (buf != NULL);  in buf_free()
33 	assert (buf->data != NULL);  in buf_free()
35 	free (buf->data);  in buf_free()
36 	memset (buf, 0, sizeof (circbuf_t));  in buf_free()
41 int buf_pop (circbuf_t * buf, char *dest, unsigned int len)  in buf_pop()  argument
46 	assert (buf != NULL);  in buf_pop()
49 	p = buf->top;  in buf_pop()
52 	if (len > buf->size)  in buf_pop()
53 		len = buf->size;  in buf_pop()
58 		if (p == buf->end) {  in buf_pop()
59 			p = buf->data;  in buf_pop()
64 	buf->top = p;  in buf_pop()
65 	buf->size -= len;  in buf_pop()
70 int buf_push (circbuf_t * buf, const char *src, unsigned int len)  in buf_push()  argument
76 	assert (buf != NULL);  in buf_push()
79 	p = buf->tail;  in buf_push()
83 		if (p == buf->end) {  in buf_push()
84 			p = buf->data;  in buf_push()
87 		if (buf->size < buf->totalsize) {  in buf_push()
88 			buf->size++;  in buf_push()
90 			buf->top++;  in buf_push()
91 			if (buf->top == buf->end) {  in buf_push()
92 				buf->top = buf->data;  in buf_push()
98 	buf->tail = p;  in buf_push()