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mstring.h
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mstring.h
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/*-
* Copyright (c) 1996 Dave Richards <[email protected]>
* Copyright (c) 1996 Thorsten Lockert <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* and exceptions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* 4. The code can not be used by Gary Random, Random Communications, Inc.,
* the employees of Random Communications, Inc. or its subsidiaries,
* including Defiance MUD, without prior written permission from the
* authors.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdint.h>
#include <stddef.h>
struct mstring_hdr {
#ifdef DEBUG
uint64_t magic;
#endif
uint32_t length;
uint16_t count;
};
#define mstring_header \
sizeof (struct mstring_hdr)
#ifdef DEBUG
#define MSTRING_MAGIC 0x12311943
#define mstring_magic(cp) \
(((struct mstring_hdr *)((char *)(cp) - mstring_header))->magic)
#endif
#define mstring_len(cp) \
(((struct mstring_hdr *)((char *)(cp) - mstring_header))->length)
#define mstring_count(cp) \
(((struct mstring_hdr *)((char *)(cp) - mstring_header))->count)
char *allocate_mstring(size_t);
char *make_mstring(const char *);
char *reference_mstring(char *);
void free_mstring(char *);
struct sstring_hdr {
#ifdef DEBUG
uint64_t magic;
#endif
char *prev;
char *next;
uint32_t length;
uint16_t count;
uint32_t hash;
};
#define sstring_header \
sizeof (struct sstring_hdr)
#ifdef DEBUG
#define SSTRING_MAGIC 0x04301963
#define sstring_magic(cp) \
(((struct sstring_hdr *)((char *)(cp) - sstring_header))->magic)
#endif
#define sstring_prev(cp) \
(((struct sstring_hdr *)((char *)(cp) - sstring_header))->prev)
#define sstring_next(cp) \
(((struct sstring_hdr *)((char *)(cp) - sstring_header))->next)
#define sstring_len(cp) \
(((struct sstring_hdr *)((char *)(cp) - sstring_header))->length)
#define sstring_count(cp) \
(((struct sstring_hdr *)((char *)(cp) - sstring_header))->count)
#define sstring_hash(cp) \
(((struct sstring_hdr *)((char *)(cp) - sstring_header))->hash)
char *reference_sstring(char *);
char *make_sstring(const char *);
void free_sstring(char *);
char *find_sstring(char *);
#define HASH_SSTRING(cp) (hash_string(cp) % HTABLE_SIZE)
#ifdef DEBUG
void dump_sstrings(void);
#endif
#ifdef DEALLOCATE_MEMORY_AT_SHUTDOWN
void remove_string_hash(void);
#endif