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Diffstat (limited to 'source4/lib/json/linkhash.h')
-rw-r--r-- | source4/lib/json/linkhash.h | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/source4/lib/json/linkhash.h b/source4/lib/json/linkhash.h deleted file mode 100644 index 5c9fa852d8..0000000000 --- a/source4/lib/json/linkhash.h +++ /dev/null @@ -1,261 +0,0 @@ -/* - * $Id: linkhash.h,v 1.6 2006/01/30 23:07:57 mclark Exp $ - * - * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd. - * Michael Clark <michael@metaparadigm.com> - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the MIT license. See COPYING for details. - * - */ - -#ifndef _linkhash_h_ -#define _linkhash_h_ - -/** - * golden prime used in hash functions - */ -#define LH_PRIME 0x9e370001UL - -/** - * sentinel pointer value for empty slots - */ -#define LH_EMPTY (void*)-1 - -/** - * sentinel pointer value for freed slots - */ -#define LH_FREED (void*)-2 - -struct lh_entry; - -/** - * callback function prototypes - */ -typedef void (lh_entry_free_fn) (struct lh_entry *e); -/** - * callback function prototypes - */ -typedef unsigned long (lh_hash_fn) (void *k); -/** - * callback function prototypes - */ -typedef int (lh_equal_fn) (void *k1, void *k2); - -/** - * An entry in the hash table - */ -struct lh_entry { - /** - * The key. - */ - void *k; - /** - * The value. - */ - void *v; - /** - * The next entry - */ - struct lh_entry *next; - /** - * The previous entry. - */ - struct lh_entry *prev; -}; - - -/** - * The hash table structure. - */ -struct lh_table { - /** - * Size of our hash. - */ - int size; - /** - * Numbers of entries. - */ - int count; - - /** - * Number of collisions. - */ - int collisions; - - /** - * Number of resizes. - */ - int resizes; - - /** - * Number of lookups. - */ - int lookups; - - /** - * Number of inserts. - */ - int inserts; - - /** - * Number of deletes. - */ - int deletes; - - /** - * Name of the hash table. - */ - char *name; - - /** - * The first entry. - */ - struct lh_entry *head; - - /** - * The last entry. - */ - struct lh_entry *tail; - - struct lh_entry *table; - - /** - * A pointer onto the function responsible for freeing an entry. - */ - lh_entry_free_fn *free_fn; - lh_hash_fn *hash_fn; - lh_equal_fn *equal_fn; -}; - - -/** - * Pre-defined hash and equality functions - */ -extern unsigned long lh_ptr_hash(void *k); -extern int lh_ptr_equal(void *k1, void *k2); - -extern unsigned long lh_char_hash(void *k); -extern int lh_char_equal(void *k1, void *k2); - - -/** - * Convenience list iterator. - */ -#define lh_foreach(table, entry) \ -for(entry = table->head; entry; entry = entry->next) - -/** - * lh_foreach_safe allows calling of deletion routine while iterating. - */ -#define lh_foreach_safe(table, entry, tmp) \ -for(entry = table->head; entry && ((tmp = entry->next) || 1); entry = tmp) - - - -/** - * Create a new linkhash table. - * @param size initial table size. The table is automatically resized - * although this incurs a performance penalty. - * @param name the table name. - * @param free_fn callback function used to free memory for entries - * when lh_table_free or lh_table_delete is called. - * If NULL is provided, then memory for keys and values - * must be freed by the caller. - * @param hash_fn function used to hash keys. 2 standard ones are defined: - * lh_ptr_hash and lh_char_hash for hashing pointer values - * and C strings respectively. - * @param equal_fn comparison function to compare keys. 2 standard ones defined: - * lh_ptr_hash and lh_char_hash for comparing pointer values - * and C strings respectively. - * @return a pointer onto the linkhash table. - */ -extern struct lh_table* lh_table_new(int size, char *name, - lh_entry_free_fn *free_fn, - lh_hash_fn *hash_fn, - lh_equal_fn *equal_fn); - -/** - * Convenience function to create a new linkhash - * table with char keys. - * @param size initial table size. - * @param name table name. - * @param free_fn callback function used to free memory for entries. - * @return a pointer onto the linkhash table. - */ -extern struct lh_table* lh_kchar_table_new(int size, char *name, - lh_entry_free_fn *free_fn); - - -/** - * Convenience function to create a new linkhash - * table with ptr keys. - * @param size initial table size. - * @param name table name. - * @param free_fn callback function used to free memory for entries. - * @return a pointer onto the linkhash table. - */ -extern struct lh_table* lh_kptr_table_new(int size, char *name, - lh_entry_free_fn *free_fn); - - -/** - * Free a linkhash table. - * If a callback free function is provided then it is called for all - * entries in the table. - * @param t table to free. - */ -extern void lh_table_free(struct lh_table *t); - - -/** - * Insert a record into the table. - * @param t the table to insert into. - * @param k a pointer to the key to insert. - * @param v a pointer to the value to insert. - */ -extern int lh_table_insert(struct lh_table *t, void *k, void *v); - - -/** - * Lookup a record into the table. - * @param t the table to lookup - * @param k a pointer to the key to lookup - * @return a pointer to the record structure of the value or NULL if it does not exist. - */ -extern struct lh_entry* lh_table_lookup_entry(struct lh_table *t, void *k); - -/** - * Lookup a record into the table - * @param t the table to lookup - * @param k a pointer to the key to lookup - * @return a pointer to the found value or NULL if it does not exist. - */ -extern void* lh_table_lookup(struct lh_table *t, void *k); - - -/** - * Delete a record from the table. - * If a callback free function is provided then it is called for the - * for the item being deleted. - * @param t the table to delete from. - * @param e a pointer to the entry to delete. - * @return 0 if the item was deleted. - * @return -1 if it was not found. - */ -extern int lh_table_delete_entry(struct lh_table *t, struct lh_entry *e); - - -/** - * Delete a record from the table. - * If a callback free function is provided then it is called for the - * for the item being deleted. - * @param t the table to delete from. - * @param k a pointer to the key to delete. - * @return 0 if the item was deleted. - * @return -1 if it was not found. - */ -extern int lh_table_delete(struct lh_table *t, void *k); - - -#endif |