elemental-ircd/include/hash.h

114 lines
3.8 KiB
C

/*
* ircd-ratbox: A slightly useful ircd.
* hash.h: A header for the ircd hashtable code.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2005 ircd-ratbox development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*
* $Id: hash.h 24794 2007-12-28 02:36:59Z androsyn $
*/
#ifndef INCLUDED_hash_h
#define INCLUDED_hash_h
extern rb_dlink_list resvTable[];
extern rb_dlink_list ndTable[];
/* Magic value for FNV hash functions */
#define FNV1_32_INIT 0x811c9dc5UL
/* Client hash table size, used in hash.c/s_debug.c */
#define U_MAX_BITS 17
#define U_MAX (1<<U_MAX_BITS)
/* Client fd hash table size, used in hash.c */
#define CLI_FD_MAX 4096
/* Channel hash table size, hash.c/s_debug.c */
#define CH_MAX_BITS 16
#define CH_MAX (1<<CH_MAX_BITS) /* 2^16 */
/* hostname hash table size */
#define HOST_MAX_BITS 17
#define HOST_MAX (1<<HOST_MAX_BITS) /* 2^17 */
/* RESV/XLINE hash table size, used in hash.c */
#define R_MAX_BITS 10
#define R_MAX (1<<R_MAX_BITS) /* 2^10 */
#define HASH_WALK(i, max, ptr, table) for (i = 0; i < max; i++) { RB_DLINK_FOREACH(ptr, table[i].head)
#define HASH_WALK_SAFE(i, max, ptr, nptr, table) for (i = 0; i < max; i++) { RB_DLINK_FOREACH_SAFE(ptr, nptr, table[i].head)
#define HASH_WALK_END }
typedef enum
{
HASH_CLIENT,
HASH_ID,
HASH_CHANNEL,
HASH_HOSTNAME,
HASH_RESV
} hash_type;
struct Client;
struct Channel;
struct ConfItem;
struct cachefile;
struct nd_entry;
uint32_t fnv_hash_upper(const unsigned char *s, unsigned int bits, unsigned int unused);
uint32_t fnv_hash(const unsigned char *s, unsigned int bits, unsigned int unused);
uint32_t fnv_hash_len(const unsigned char *s, unsigned int bits, unsigned int len);
uint32_t fnv_hash_upper_len(const unsigned char *s, unsigned int bits, unsigned int len);
void init_hash(void);
void add_to_hash(hash_type, const char *, void *);
void del_from_hash(hash_type, const char *, void *);
struct Client *find_any_client(const char *name);
struct Client *find_client(const char *name);
struct Client *find_named_client(const char *name);
struct Client *find_server(struct Client *source_p, const char *name);
struct Client *find_id(const char *name);
struct Channel *get_or_create_channel(struct Client *client_p, const char *chname, int *isnew);
struct Channel *find_channel(const char *name);
rb_dlink_node *find_hostname(const char *);
struct ConfItem *hash_find_resv(const char *name);
void clear_resv_hash(void);
void add_to_help_hash(const char *name, struct cachefile *hptr);
void clear_help_hash(void);
struct cachefile *hash_find_help(const char *name, int flags);
void add_to_nd_hash(const char *name, struct nd_entry *nd);
struct nd_entry *hash_find_nd(const char *name);
void add_to_cli_fd_hash(struct Client *client_p);
void del_from_cli_fd_hash(struct Client *client_p);
struct Client *find_cli_fd_hash(int fd);
void hash_stats(struct Client *);
#endif /* INCLUDED_hash_h */