xref: /titanic_44/usr/src/lib/libdtrace/common/dt_buf.h (revision e1c679fa4b0ab8c4bcaa6263974ca0c46e5b027f)
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
33 extern "C" {
34 #endif
35 
36 #include <dtrace.h>
37 
38 typedef 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 
47 extern void dt_buf_create(dtrace_hdl_t *, dt_buf_t *, const char *, size_t);
48 extern void dt_buf_destroy(dtrace_hdl_t *, dt_buf_t *);
49 extern void dt_buf_reset(dtrace_hdl_t *, dt_buf_t *);
50 
51 extern void dt_buf_write(dtrace_hdl_t *, dt_buf_t *,
52     const void *, size_t, size_t);
53 
54 extern void dt_buf_concat(dtrace_hdl_t *, dt_buf_t *,
55     const dt_buf_t *, size_t);
56 
57 extern size_t dt_buf_offset(const dt_buf_t *, size_t);
58 extern size_t dt_buf_len(const dt_buf_t *);
59 
60 extern int dt_buf_error(const dt_buf_t *);
61 extern void *dt_buf_ptr(const dt_buf_t *);
62 
63 extern void *dt_buf_claim(dtrace_hdl_t *, dt_buf_t *);
64 
65 #ifdef	__cplusplus
66 }
67 #endif
68 
69 #endif	/* _DT_BUF_H */
70