49 dt_buf_create(dtrace_hdl_t *dtp, dt_buf_t *bp, const char *name, size_t len)  in dt_buf_create()  argument
54 	bp->dbu_buf = bp->dbu_ptr = dt_zalloc(dtp, len);  in dt_buf_create()
55 	bp->dbu_len = len;  in dt_buf_create()
57 	if (bp->dbu_buf == NULL)  in dt_buf_create()
58 		bp->dbu_err = dtrace_errno(dtp);  in dt_buf_create()
60 		bp->dbu_err = 0;  in dt_buf_create()
62 	bp->dbu_resizes = 0;  in dt_buf_create()
63 	bp->dbu_name = name;  in dt_buf_create()
67 dt_buf_destroy(dtrace_hdl_t *dtp, dt_buf_t *bp)  in dt_buf_destroy()  argument
70 	    bp->dbu_name, (ulong_t)bp->dbu_len, bp->dbu_resizes);  in dt_buf_destroy()
72 	dt_free(dtp, bp->dbu_buf);  in dt_buf_destroy()
76 dt_buf_reset(dtrace_hdl_t *dtp, dt_buf_t *bp)  in dt_buf_reset()  argument
78 	if ((bp->dbu_ptr = bp->dbu_buf) != NULL)  in dt_buf_reset()
79 		bp->dbu_err = 0;  in dt_buf_reset()
81 		dt_buf_create(dtp, bp, bp->dbu_name, bp->dbu_len);  in dt_buf_reset()
85 dt_buf_write(dtrace_hdl_t *dtp, dt_buf_t *bp,  in dt_buf_write()  argument
88 	size_t off = (size_t)(bp->dbu_ptr - bp->dbu_buf);  in dt_buf_write()
91 	if (bp->dbu_err != 0) {  in dt_buf_write()
92 		(void) dt_set_errno(dtp, bp->dbu_err);  in dt_buf_write()
96 	if (bp->dbu_ptr + adj + len > bp->dbu_buf + bp->dbu_len) {  in dt_buf_write()
97 		size_t new_len = bp->dbu_len * 2;  in dt_buf_write()
101 		while (bp->dbu_ptr + adj + len > bp->dbu_buf + new_len) {  in dt_buf_write()
107 			bp->dbu_err = dtrace_errno(dtp);  in dt_buf_write()
111 		bcopy(bp->dbu_buf, new_buf, off);  in dt_buf_write()
112 		dt_free(dtp, bp->dbu_buf);  in dt_buf_write()
114 		bp->dbu_buf = new_buf;  in dt_buf_write()
115 		bp->dbu_ptr = new_buf + off;  in dt_buf_write()
116 		bp->dbu_len = new_len;  in dt_buf_write()
117 		bp->dbu_resizes += r;  in dt_buf_write()
120 	bp->dbu_ptr += adj;  in dt_buf_write()
121 	bcopy(buf, bp->dbu_ptr, len);  in dt_buf_write()
122 	bp->dbu_ptr += len;  in dt_buf_write()
139 dt_buf_offset(const dt_buf_t *bp, size_t align)  in dt_buf_offset()  argument
141 	size_t off = (size_t)(bp->dbu_ptr - bp->dbu_buf);  in dt_buf_offset()
146 dt_buf_len(const dt_buf_t *bp)  in dt_buf_len()  argument
148 	return (bp->dbu_ptr - bp->dbu_buf);  in dt_buf_len()
152 dt_buf_error(const dt_buf_t *bp)  in dt_buf_error()  argument
154 	return (bp->dbu_err);  in dt_buf_error()
158 dt_buf_ptr(const dt_buf_t *bp)  in dt_buf_ptr()  argument
160 	return (bp->dbu_buf);  in dt_buf_ptr()
164 dt_buf_claim(dtrace_hdl_t *dtp, dt_buf_t *bp)  in dt_buf_claim()  argument
166 	void *buf = bp->dbu_buf;  in dt_buf_claim()
168 	if (bp->dbu_err != 0) {  in dt_buf_claim()
173 	bp->dbu_buf = bp->dbu_ptr = NULL;  in dt_buf_claim()
174 	bp->dbu_len = 0;  in dt_buf_claim()