git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/result.c

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary: Functions to manipulate the result structure.
   9  *
  10  */
  11
  12 /*
  13   memcached_result_st are used to internally represent the return values from
  14   memcached. We use a structure so that long term as identifiers are added
  15   to memcached we will be able to absorb new attributes without having
  16   to addjust the entire API.
  17 */
  18 #include "common.h"
  19
  20 static inline void _result_init(memcached_result_st *self,
  21                                 const memcached_st *memc)
  22 {
  23   self->item_flags= 0;
  24   self->item_expiration= 0;
  25   self->key_length= 0;
  26   self->item_cas= 0;
  27   self->root= memc;
  28   self->item_key[0]= 0;
  29 }
  30
  31 memcached_result_st *memcached_result_create(const memcached_st *memc,
  32                                              memcached_result_st *ptr)
  33 {
  34   WATCHPOINT_ASSERT(memc);
  35   WATCHPOINT_ASSERT(memc->options.is_initialized);
  36
  37   /* Saving malloc calls :) */
  38   if (ptr)
  39   {
  40     ptr->options.is_allocated= false;
  41   }
  42   else
  43   {
  44     ptr= libmemcached_malloc(memc, sizeof(memcached_result_st));
  45
  46     if (ptr == NULL)
  47       return NULL;
  48
  49     ptr->options.is_allocated= true;
  50   }
  51
  52   ptr->options.is_initialized= true;
  53
  54   _result_init(ptr, memc);
  55
  56   ptr->root= memc;
  57   memcached_string_create(memc, &ptr->value, 0);
  58   WATCHPOINT_ASSERT_INITIALIZED(&ptr->value);
  59   WATCHPOINT_ASSERT(ptr->value.string == NULL);
  60
  61   return ptr;
  62 }
  63
  64 void memcached_result_reset(memcached_result_st *ptr)
  65 {
  66   ptr->key_length= 0;
  67   memcached_string_reset(&ptr->value);
  68   ptr->item_flags= 0;
  69   ptr->item_cas= 0;
  70   ptr->item_expiration= 0;
  71 }
  72
  73 void memcached_result_free(memcached_result_st *ptr)
  74 {
  75   if (ptr == NULL)
  76     return;
  77
  78   memcached_string_free(&ptr->value);
  79
  80   if (memcached_is_allocated(ptr))
  81   {
  82     WATCHPOINT_ASSERT(ptr->root); // Without a root, that means that result was not properly initialized.
  83     libmemcached_free(ptr->root, ptr);
  84   }
  85   else
  86   {
  87     ptr->options.is_initialized= false;
  88   }
  89 }
  90
  91 memcached_return_t memcached_result_set_value(memcached_result_st *ptr,
  92                                               const char *value,
  93                                               size_t length)
  94 {
  95   return memcached_string_append(&ptr->value, value, length);
  96 }