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

   1 .TH "MEMCACHED_INCREMENT_WITH_INITIAL" "3" "April 09, 2011" "0.47" "libmemcached"
   2 .SH NAME
   3 memcached_increment_with_initial \- libmemcached Documentation
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  32 .
  33 .sp
  34 Manipulate counters
  35 .SH LIBRARY
  36 .sp
  37 C Client Library for memcached (libmemcached, \-lmemcached)
  38 .SS SYNOPSIS
  39 .sp
  40 .nf
  41 .ft C
  42 #include <libmemcached/memcached.h>
  43
  44 memcached_return_t
  45   memcached_increment (memcached_st *ptr,
  46                        const char *key, size_t key_length,
  47                        unsigned int offset,
  48                        uint64_t *value);
  49
  50 memcached_return_t
  51   memcached_decrement (memcached_st *ptr,
  52                        const char *key, size_t key_length,
  53                        unsigned int offset,
  54                        uint64_t *value);
  55
  56 memcached_return_t
  57   memcached_increment_with_initial (memcached_st *ptr,
  58                                     const char *key,
  59                                     size_t key_length,
  60                                     uint64_t offset,
  61                                     uint64_t initial,
  62                                     time_t expiration,
  63                                     uint64_t *value);
  64
  65 memcached_return_t
  66   memcached_decrement_with_initial (memcached_st *ptr,
  67                                     const char *key,
  68                                     size_t key_length,
  69                                     uint64_t offset,
  70                                     uint64_t initial,
  71                                     time_t expiration,
  72                                     uint64_t *value);
  73
  74 memcached_return_t
  75   memcached_increment_by_key (memcached_st *ptr,
  76                               const char *master_key, size_t master_key_length,
  77                               const char *key, size_t key_length,
  78                               unsigned int offset,
  79                               uint64_t *value);
  80
  81 memcached_return_t
  82   memcached_decrement_by_key (memcached_st *ptr,
  83                               const char *master_key, size_t master_key_length,
  84                               const char *key, size_t key_length,
  85                               unsigned int offset,
  86                               uint64_t *value);
  87
  88 memcached_return_t
  89   memcached_increment_with_initial_by_key (memcached_st *ptr,
  90                                            const char *master_key,
  91                                            size_t master_key_length,
  92                                            const char *key,
  93                                            size_t key_length,
  94                                            uint64_t offset,
  95                                            uint64_t initial,
  96                                            time_t expiration,
  97                                            uint64_t *value);
  98
  99 memcached_return_t
 100   memcached_decrement_with_initial_by_key (memcached_st *ptr,
 101                                            const char *master_key,
 102                                            size_t master_key_length,
 103                                            const char *key,
 104                                            size_t key_length,
 105                                            uint64_t offset,
 106                                            uint64_t initial,
 107                                            time_t expiration,
 108                                            uint64_t *value);
 109 .ft P
 110 .fi
 111 .SS DESCRIPTION
 112 .sp
 113 memcached(1) servers have the ability to increment and decrement keys
 114 (overflow and underflow are not detected). This gives you the ability to use
 115 memcached to generate shared sequences of values.
 116 .sp
 117 memcached_increment() takes a key and keylength and increments the value by
 118 the offset passed to it. The value is then returned via the unsigned int
 119 value pointer you pass to it.
 120 .sp
 121 memcached_decrement() takes a key and keylength and decrements the value by
 122 the offset passed to it. The value is then returned via the unsigned int
 123 value pointer you pass to it.
 124 .sp
 125 memcached_increment_with_initial() takes a key and keylength and increments
 126 the value by the offset passed to it. If the object specified by key does
 127 not exist, one of two things may happen: If the expiration value is
 128 MEMCACHED_EXPIRATION_NOT_ADD, the operation will fail. For all other
 129 expiration values, the operation will succeed by seeding the value for that
 130 key with a initial value to expire with the provided expiration time. The
 131 flags will be set to zero.The value is then returned via the unsigned int
 132 value pointer you pass to it.
 133 .sp
 134 memcached_decrement_with_initial() takes a key and keylength and decrements
 135 the value by the offset passed to it. If the object specified by key does
 136 not exist, one of two things may happen: If the expiration value is
 137 MEMCACHED_EXPIRATION_NOT_ADD, the operation will fail. For all other
 138 expiration values, the operation will succeed by seeding the value for that
 139 key with a initial value to expire with the provided expiration time. The
 140 flags will be set to zero.The value is then returned via the unsigned int
 141 value pointer you pass to it.
 142 .sp
 143 memcached_increment_by_key(), memcached_decrement_by_key(),
 144 memcached_increment_with_initial_by_key(), and
 145 memcached_decrement_with_initial_by_key() are master key equivalents of the
 146 above.
 147 .SH RETURN
 148 .sp
 149 A value of type \fBmemcached_return_t\fP is returned.
 150 On success that value will be \fBMEMCACHED_SUCCESS\fP.
 151 Use memcached_strerror() to translate this value to a printable string.
 152 .SH HOME
 153 .sp
 154 To find out more information please check:
 155 \fI\%https://launchpad.net/libmemcached\fP
 156 .SH AUTHOR
 157 .sp
 158 Brian Aker, <\fI\%brian@tangent.org\fP>
 159 .SS SEE ALSO
 160 .sp
 161 \fImemcached(1)\fP \fIlibmemcached(3)\fP \fImemcached_strerror(3)\fP
 162 .SH AUTHOR
 163 Brian Aker
 164 .SH COPYRIGHT
 165 2011, Brian Aker DataDifferential, http://datadifferential.com/
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