memcached_generate_hash_value - Generating hash values directly

memcached_generate_hash_value() allows you to hash a key using one of the hash functions defined in the library. This method is provided for the convenience of higher-level language bindings and is not necessary for normal memcache operations. Support for MEMCACHED_HASH_HSIEH is a compile time option that is disabled by default. To enable tests for this hashing algorithm, configure and build libmemcached with the Hsieh hash enabled. memcached_generate_hash() takes a memcached_st structure and produces the hash value that would have been generated based on the defaults of memcached_st. As of version 0.36 all hash methods have been placed into the library libhashkit(3) which is linked with libmemcached(3). For more information please see its documentation.

memcached_generate_hash_value - Generating hash values directly Hash a key value

A 32-bit integer which is the result of hashing the given key. For 64-bit hash algorithms, only the least-significant 32 bits are returned.

memcached(1)libmemcached(3)memcached_strerror(3) 1.1 Mar 31, 2024 MEMCACHED_GENERATE_HASH_VALUE(3)

#include<libmemcached/memcached.h> Compile and link with -lmemcachedutil -lmemcached uint32_tmemcached_generate_hash_value(constchar*key,size_tkey_length,memcached_hash_thash_algorithm)Parameters • key -- the key to generate a hash of • key_length -- the length of the key without any terminating zero • hash_algorithm -- memcached_hash_t, the algorithm to use Returns a 32 bit hash value uint32_tmemcached_generate_hash(memcached_st*ptr,constchar*key,size_tkey_length)Parameters • ptr -- pointer to an initialized memcached_st struct • key -- the key to generate a hash of • key_length -- the length of the key without any terminating zero Returns a 32 bit hash value typedefenummemcached_hash_tmemcached_hash_tenummemcached_hash_tenumeratorMEMCACHED_HASH_DEFAULTenumeratorMEMCACHED_HASH_MD5enumeratorMEMCACHED_HASH_CRCenumeratorMEMCACHED_HASH_FNV1_64enumeratorMEMCACHED_HASH_FNV1A_64enumeratorMEMCACHED_HASH_FNV1_32enumeratorMEMCACHED_HASH_FNV1A_32enumeratorMEMCACHED_HASH_HSIEHenumeratorMEMCACHED_HASH_MURMURenumeratorMEMCACHED_HASH_JENKINSenumeratorMEMCACHED_HASH_MURMUR3enumeratorMEMCACHED_HASH_CUSTOM