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2012-04-18Xext: add a generic hashtable implementationErkki Seppälä1-0/+137
The generic hashtable implementation adds a key-value container, that keeps the key and value inside the hashtable structure and manages their memory by itself. This data structure is best suited for fixed-length keys and values. One creates a new hash table with ht_create and disposes it with ht_destroy. ht_create accepts the key and value sizes (in bytes) in addition to the hashing and comparison functions to use. When adding keys with ht_add, they will be copied into the hash and a pointer to the value will be returned: data may be put into this structure (or if the hash table is to be used as a set, one can just not put anything in). The hash table comes also with one generic hashing function plus a comparison function to facilitate ease of use. It also has a custom hashing and comparison functions for hashing resource IDs with HashXID. Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi> Signed-off-by: Erkki Seppälä <erkki.seppala@vincit.fi>