git.m6w6.name Git - awesomized/libmemcached/blob - docs/man/memcached_result_key_length.3

   1 .TH "MEMCACHED_RESULT_KEY_LENGTH" "3" "June 17, 2011" "0.49" "libmemcached"
   2 .SH NAME
   3 memcached_result_key_length \- Working with result sets
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  32 .
  33 .SH SYNOPSIS
  34 .sp
  35 #include <libmemcached/memcached_pool.h>
  36 .INDENT 0.0
  37 .TP
  38 .B memcached_result_st
  39 .UNINDENT
  40 .INDENT 0.0
  41 .TP
  42 .B memcached_result_st * memcached_result_create (memcached_st *ptr, memcached_result_st *result);
  43 .UNINDENT
  44 .INDENT 0.0
  45 .TP
  46 .B void memcached_result_free (memcached_result_st *result);
  47 .UNINDENT
  48 .INDENT 0.0
  49 .TP
  50 .B const char * memcached_result_key_value (memcached_result_st *result);
  51 .UNINDENT
  52 .INDENT 0.0
  53 .TP
  54 .B size_t memcached_result_key_length (const memcached_result_st *result);
  55 .UNINDENT
  56 .INDENT 0.0
  57 .TP
  58 .B const char *memcached_result_value (memcached_result_st *ptr);
  59 .UNINDENT
  60 .INDENT 0.0
  61 .TP
  62 .B size_t memcached_result_length (const memcached_result_st *ptr);
  63 .UNINDENT
  64 .INDENT 0.0
  65 .TP
  66 .B uint32_t memcached_result_flags(const \fI\%memcached_result_st\fP\fI\ *result\fP)
  67 .UNINDENT
  68 .INDENT 0.0
  69 .TP
  70 .B uint64_t memcached_result_cas (const memcached_result_st *result);
  71 .UNINDENT
  72 .INDENT 0.0
  73 .TP
  74 .B memcached_return_t memcached_result_set_value(\fI\%memcached_result_st\fP\fI\ *ptr\fP, const char\fI\ *value\fP, size_t\fI\ length\fP)
  75 .UNINDENT
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  77 .TP
  78 .B void memcached_result_set_flags(\fI\%memcached_result_st\fP\fI\ *ptr\fP, uint32_t\fI\ flags\fP)
  79 .UNINDENT
  80 .INDENT 0.0
  81 .TP
  82 .B void memcached_result_set_expiration(\fI\%memcached_result_st\fP\fI\ *ptr\fP, time_t)
  83 .UNINDENT
  84 .sp
  85 Compile and link with \-lmemcachedutil \-lmemcached
  86 .SH DESCRIPTION
  87 .sp
  88 libmemcached(3) can optionally return a memcached_result_st which acts as a
  89 result object. The result objects have added benefits over the character
  90 pointer returns, in that they are forward compatible with new return items
  91 that future memcached servers may implement (the best current example of
  92 this is the CAS return item). The structures can also be reused, which will
  93 save on calls to malloc(3). It is suggested that you use result objects over
  94 char * return functions.
  95 .sp
  96 The structure of memcached_result_st has been encapsulated, you should not
  97 write code to directly access members of the structure.
  98 .sp
  99 memcached_result_create() will either allocate memory for a
 100 memcached_result_st or will initialize a structure passed to it.
 101 .sp
 102 memcached_result_free() will deallocate any memory attached to the
 103 structure. If the structure was also allocated, it will deallocate it.
 104 .sp
 105 memcached_result_key_value() returns the key value associated with the
 106 current result object.
 107 .sp
 108 memcached_result_key_length() returns the key length associated with the
 109 current result object.
 110 .sp
 111 memcached_result_value() returns the result value associated with the
 112 current result object.
 113 .sp
 114 memcached_result_length() returns the result length associated with the
 115 current result object.
 116 .sp
 117 memcached_result_flags() returns the flags associated with the
 118 current result object.
 119 .sp
 120 memcached_result_cas() returns the cas associated with the
 121 current result object. This value will only be available if the server
 122 tests it.
 123 .sp
 124 memcached_result_set_value() takes a byte array and a size and sets
 125 the result to this value. This function is used for trigger responses.
 126 .sp
 127 void memcached_result_set_flags() takes a result structure and stores
 128 a new value for the flags field.
 129 .sp
 130 void memcached_result_set_expiration(A) takes a result structure and stores
 131 a new value for the expiration field (this is only used by read through
 132 triggers).
 133 .sp
 134 You may wish to avoid using memcached_result_create(3) with a
 135 stack based allocation. The most common issues related to ABI safety involve
 136 heap allocated structures.
 137 .SH RETURN
 138 .sp
 139 Varies, see particular functions. All structures must have
 140 memcached_result_free() called on them for cleanup purposes. Failure to
 141 do this will result in leaked memory.
 142 .SH HOME
 143 .sp
 144 To find out more information please check:
 145 \fI\%http://libmemcached.org/\fP
 146 .SH SEE ALSO
 147 .sp
 148 \fImemcached(1)\fP \fIlibmemcached(3)\fP \fImemcached_strerror(3)\fP
 149 .SH AUTHOR
 150 Brian Aker
 151 .SH COPYRIGHT
 152 2011, Brian Aker DataDifferential, http://datadifferential.com/
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