freebsd-nq/lib/libdtrace/common/dt_strtab.h

73 lines
2.4 KiB
C

/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _DT_STRTAB_H
#define _DT_STRTAB_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct dt_strhash {
const char *str_data; /* pointer to actual string data */
ulong_t str_buf; /* index of string data buffer */
size_t str_off; /* offset in bytes of this string */
size_t str_len; /* length in bytes of this string */
struct dt_strhash *str_next; /* next string in hash chain */
} dt_strhash_t;
typedef struct dt_strtab {
dt_strhash_t **str_hash; /* array of hash buckets */
ulong_t str_hashsz; /* size of hash bucket array */
char **str_bufs; /* array of buffer pointers */
char *str_ptr; /* pointer to current buffer location */
ulong_t str_nbufs; /* size of buffer pointer array */
size_t str_bufsz; /* size of individual buffer */
ulong_t str_nstrs; /* total number of strings in strtab */
size_t str_size; /* total size of strings in bytes */
} dt_strtab_t;
typedef ssize_t dt_strtab_write_f(const char *, size_t, size_t, void *);
extern dt_strtab_t *dt_strtab_create(size_t);
extern void dt_strtab_destroy(dt_strtab_t *);
extern ssize_t dt_strtab_index(dt_strtab_t *, const char *);
extern ssize_t dt_strtab_insert(dt_strtab_t *, const char *);
extern size_t dt_strtab_size(const dt_strtab_t *);
extern ssize_t dt_strtab_write(const dt_strtab_t *,
dt_strtab_write_f *, void *);
extern ulong_t dt_strtab_hash(const char *, size_t *);
#ifdef __cplusplus
}
#endif
#endif /* _DT_STRTAB_H */