1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef	_DT_BUF_H
28#define	_DT_BUF_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#ifdef	__cplusplus
33extern "C" {
34#endif
35
36#include <dtrace.h>
37
38typedef struct dt_buf {
39	const char *dbu_name;	/* string name for debugging */
40	uchar_t *dbu_buf;	/* buffer base address */
41	uchar_t *dbu_ptr;	/* current buffer location */
42	size_t dbu_len;		/* buffer size in bytes */
43	int dbu_err;		/* errno value if error */
44	int dbu_resizes;	/* number of resizes */
45} dt_buf_t;
46
47extern void dt_buf_create(dtrace_hdl_t *, dt_buf_t *, const char *, size_t);
48extern void dt_buf_destroy(dtrace_hdl_t *, dt_buf_t *);
49extern void dt_buf_reset(dtrace_hdl_t *, dt_buf_t *);
50
51extern void dt_buf_write(dtrace_hdl_t *, dt_buf_t *,
52    const void *, size_t, size_t);
53
54extern void dt_buf_concat(dtrace_hdl_t *, dt_buf_t *,
55    const dt_buf_t *, size_t);
56
57extern size_t dt_buf_offset(const dt_buf_t *, size_t);
58extern size_t dt_buf_len(const dt_buf_t *);
59
60extern int dt_buf_error(const dt_buf_t *);
61extern void *dt_buf_ptr(const dt_buf_t *);
62
63extern void *dt_buf_claim(dtrace_hdl_t *, dt_buf_t *);
64
65#ifdef	__cplusplus
66}
67#endif
68
69#endif	/* _DT_BUF_H */
70