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      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