git.m6w6.name Git - m6w6/libmemcached/blob - docs/memcached_generate_hash_value.rst

   1 ===============================
   2 Generating hash values directly
   3 ===============================
   4
   5 .. index:: object: memcached_st
   6
   7 Hash a key value
   8
   9
  10 --------
  11 SYNOPSIS
  12 --------
  13
  14
  15 #include <libmemcached/memcached.h>
  16
  17 .. c:function:: uint32_t memcached_generate_hash_value (const char *key, size_t key_length, memcached_hash_t hash_algorithm);
  18
  19 .. c:function:: uint32_t memcached_generate_hash (memcached_st *ptr, const char *key, size_t key_length);
  20
  21 Compile and link with -lmemcachedutil -lmemcached
  22
  23
  24 -----------
  25 DESCRIPTION
  26 -----------
  27
  28
  29 :c:func:`memcached_generate_hash_value()` allows you to hash a key using one of
  30 the hash functions defined in the library. This method is provided for
  31 the convenience of higher-level language bindings and is not necessary
  32 for normal memcache operations.
  33
  34 The allowed hash algorithm constants are listed in the manpage for
  35 :c:func:`memcached_behavior_set()`.
  36
  37 :c:func:`memcached_generate_hash()` takes a :c:type:`memcached_st` struture
  38 and produces the hash value that would have been generated based on the
  39 defaults of the :c:type:`memcached_st structure`.
  40
  41 As of version 0.36 all hash methods have been placed into the library
  42 libhashkit(3) which is linked with libmemcached(3). For more information please see its documentation.
  43
  44
  45 ------
  46 RETURN
  47 ------
  48
  49
  50 A 32-bit integer which is the result of hashing the given key.
  51 For 64-bit hash algorithms, only the least-significant 32 bits are
  52 returned.
  53
  54
  55 ----
  56 HOME
  57 ----
  58
  59
  60 To find out more information please check:
  61 `http://libmemcached.org/ <http://libmemcached.org/>`_
  62
  63
  64 ------
  65 AUTHOR
  66 ------
  67
  68
  69 Brian Aker, <brian@tangent.org>
  70
  71
  72 --------
  73 SEE ALSO
  74 --------
  75
  76
  77 :manpage:`memcached(1)` :manpage:`libmemcached(3)` :manpage:`memcached_strerror(3)`