usr/src/lib/libdtrace/common/dt_strtab.h

   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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _DT_STRTAB_H
  28 #define _DT_STRTAB_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <sys/types.h>
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 typedef struct dt_strhash {
  39         const char *str_data;           /* pointer to actual string data */
  40         ulong_t str_buf;                /* index of string data buffer */
  41         size_t str_off;                 /* offset in bytes of this string */
  42         size_t str_len;                 /* length in bytes of this string */
  43         struct dt_strhash *str_next;    /* next string in hash chain */
  44 } dt_strhash_t;
  45
  46 typedef struct dt_strtab {
  47         dt_strhash_t **str_hash;        /* array of hash buckets */
  48         ulong_t str_hashsz;             /* size of hash bucket array */
  49         char **str_bufs;                /* array of buffer pointers */
  50         char *str_ptr;                  /* pointer to current buffer location */
  51         ulong_t str_nbufs;              /* size of buffer pointer array */
  52         size_t str_bufsz;               /* size of individual buffer */
  53         ulong_t str_nstrs;              /* total number of strings in strtab */
  54         size_t str_size;                /* total size of strings in bytes */
  55 } dt_strtab_t;
  56
  57 typedef ssize_t dt_strtab_write_f(const char *, size_t, size_t, void *);
  58
  59 extern dt_strtab_t *dt_strtab_create(size_t);
  60 extern void dt_strtab_destroy(dt_strtab_t *);
  61 extern ssize_t dt_strtab_index(dt_strtab_t *, const char *);
  62 extern ssize_t dt_strtab_insert(dt_strtab_t *, const char *);
  63 extern size_t dt_strtab_size(const dt_strtab_t *);
  64 extern ssize_t dt_strtab_write(const dt_strtab_t *,
  65     dt_strtab_write_f *, void *);
  66 extern ulong_t dt_strtab_hash(const char *, size_t *);
  67
  68 #ifdef  __cplusplus
  69 }
  70 #endif
  71
  72 #endif  /* _DT_STRTAB_H */