56 lines
960 B
C++
56 lines
960 B
C++
// hash.h
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// Author: Josh Holtrop
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// Date: 08/28/05
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// Modified: 08/28/05
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// Implements a basic hash table (u32_t -> void*)
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#ifndef __HOS_HASH_H__
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#define __HOS_HASH_H__ __HOS_HASH_H__
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#include "hos_defines.h"
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#include "lang/vector.h"
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typedef struct
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{
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u32_t key;
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void *data;
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} hash_entry_t;
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class hash
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{
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private:
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/* index into hash_primes[] */
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u32_t mySizeIndex;
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/* How many values in the hash table */
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u32_t mySize;
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/* array of hash entries */
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vector< vector<hash_entry_t> > myTable;
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/* hash the key to a table index */
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u32_t hash_key(u32_t key);
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public:
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/* Constructor */
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hash();
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/* Add a value to the hash table */
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int add(u32_t key, void *val);
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/* Retrieve a value from the hash table */
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void *get(u32_t key);
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/* Remove a value from the hash table */
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int remove(u32_t key);
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/* Check if the given key exists in the hash table */
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int exists(u32_t key);
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/* How many values are in the hash table */
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u32_t size();
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};
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#endif
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