git.m6w6.name Git - awesomized/libmemcached/blob - clients/execute.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:
   9  *
  10  */
  11
  12 /*
  13   Execute a memcached_set() a set of pairs.
  14   Return the number of rows set.
  15 */
  16
  17 #include "config.h"
  18 #include "execute.h"
  19
  20 unsigned int execute_set(memcached_st *memc, pairs_st *pairs, unsigned int number_of)
  21 {
  22   memcached_return_t rc;
  23   unsigned int x;
  24   unsigned int pairs_sent;
  25
  26   for (x= 0, pairs_sent= 0; x < number_of; x++)
  27   {
  28     rc= memcached_set(memc, pairs[x].key, pairs[x].key_length,
  29                       pairs[x].value, pairs[x].value_length,
  30                       0, 0);
  31     if (rc != MEMCACHED_SUCCESS && rc != MEMCACHED_BUFFERED)
  32       fprintf(stderr, "Failured on insert of %.*s\n",
  33               (unsigned int)pairs[x].key_length, pairs[x].key);
  34     else
  35       pairs_sent++;
  36   }
  37
  38   return pairs_sent;
  39 }
  40
  41 /*
  42   Execute a memcached_get() on a set of pairs.
  43   Return the number of rows retrieved.
  44 */
  45 unsigned int execute_get(memcached_st *memc, pairs_st *pairs, unsigned int number_of)
  46 {
  47   memcached_return_t rc;
  48   unsigned int x;
  49   unsigned int retrieved;
  50
  51
  52   for (retrieved= 0,x= 0; x < number_of; x++)
  53   {
  54     char *value;
  55     size_t value_length;
  56     uint32_t flags;
  57     unsigned int fetch_key;
  58
  59     fetch_key= (unsigned int)((unsigned int)random() % number_of);
  60
  61     value= memcached_get(memc, pairs[fetch_key].key, pairs[fetch_key].key_length,
  62                          &value_length, &flags, &rc);
  63
  64     if (rc != MEMCACHED_SUCCESS)
  65       fprintf(stderr, "Failured on read of %.*s\n",
  66               (unsigned int)pairs[fetch_key].key_length, pairs[fetch_key].key);
  67     else
  68       retrieved++;
  69
  70     free(value);
  71   }
  72
  73   return retrieved;
  74 }
  75
  76 /**
  77  * Callback function to count the number of results
  78  */
  79 static memcached_return_t callback_counter(const memcached_st *ptr,
  80                                            memcached_result_st *result,
  81                                            void *context)
  82 {
  83   (void)ptr;
  84   (void)result;
  85   unsigned int *counter= (unsigned int *)context;
  86   *counter= *counter + 1;
  87
  88   return MEMCACHED_SUCCESS;
  89 }
  90
  91 /**
  92  * Try to run a large mget to get all of the keys
  93  * @param memc memcached handle
  94  * @param keys the keys to get
  95  * @param key_length the length of the keys
  96  * @param number_of the number of keys to try to get
  97  * @return the number of keys received
  98  */
  99 unsigned int execute_mget(memcached_st *memc,
 100                           const char * const *keys,
 101                           size_t *key_length,
 102                           unsigned int number_of)
 103 {
 104   unsigned int retrieved= 0;
 105   memcached_execute_fn callbacks[1]= { [0]= &callback_counter };
 106   memcached_return_t rc;
 107   rc= memcached_mget_execute(memc, keys, key_length,
 108                              (size_t)number_of, callbacks, &retrieved, 1);
 109
 110   if (rc == MEMCACHED_SUCCESS || rc == MEMCACHED_NOTFOUND ||
 111           rc == MEMCACHED_BUFFERED || rc == MEMCACHED_END)
 112   {
 113     rc= memcached_fetch_execute(memc, callbacks, (void *)&retrieved, 1);
 114     if (rc != MEMCACHED_SUCCESS && rc != MEMCACHED_NOTFOUND && rc != MEMCACHED_END)
 115     {
 116       fprintf(stderr, "Failed to execute mget: %s\n",
 117               memcached_strerror(memc, rc));
 118       memcached_quit(memc);
 119       return 0;
 120     }
 121   }
 122   else
 123   {
 124     fprintf(stderr, "Failed to execute mget: %s\n",
 125             memcached_strerror(memc, rc));
 126     memcached_quit(memc);
 127     return 0;
 128   }
 129
 130   return retrieved;
 131 }