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

   1 #include "common.h"
   2 #include <sys/types.h>
   3 #include <sys/socket.h>
   4 #include <netinet/tcp.h>
   5
   6 /*
   7   This function is used to modify the behabior of running client.
   8
   9   We quit all connections so we can reset the sockets.
  10 */
  11
  12 void set_behavior_flag(memcached_st *ptr, memcached_flags temp_flag, uint64_t data)
  13 {
  14   if (data)
  15     ptr->flags|= temp_flag;
  16   else
  17     ptr->flags&= ~temp_flag;
  18 }
  19
  20 memcached_return memcached_behavior_set(memcached_st *ptr,
  21                                         memcached_behavior flag,
  22                                         uint64_t data)
  23 {
  24   switch (flag)
  25   {
  26   case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
  27     set_behavior_flag(ptr, MEM_SUPPORT_CAS, data);
  28     break;
  29   case MEMCACHED_BEHAVIOR_NO_BLOCK:
  30     set_behavior_flag(ptr, MEM_NO_BLOCK, data);
  31     memcached_quit(ptr);
  32   case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
  33     set_behavior_flag(ptr, MEM_BUFFER_REQUESTS, data);
  34     memcached_quit(ptr);
  35     break;
  36   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
  37     set_behavior_flag(ptr, MEM_TCP_NODELAY, data);
  38     memcached_quit(ptr);
  39     break;
  40   case MEMCACHED_BEHAVIOR_DISTRIBUTION:
  41     {
  42       ptr->distribution= (memcached_server_distribution)(data);
  43       run_distribution(ptr);
  44       break;
  45     }
  46   case MEMCACHED_BEHAVIOR_HASH:
  47     ptr->hash= (memcached_hash)(data);
  48     break;
  49   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
  50     set_behavior_flag(ptr, MEM_USE_CACHE_LOOKUPS, data);
  51     memcached_quit(ptr);
  52     break;
  53   case MEMCACHED_BEHAVIOR_VERIFY_KEY:
  54     set_behavior_flag(ptr, MEM_VERIFY_KEY, data);
  55     break;
  56   case MEMCACHED_BEHAVIOR_KETAMA:
  57     set_behavior_flag(ptr, MEM_USE_KETAMA, data);
  58     break;
  59   case MEMCACHED_BEHAVIOR_SORT_HOSTS:
  60     {
  61       set_behavior_flag(ptr, MEM_USE_SORT_HOSTS, data);
  62       run_distribution(ptr);
  63
  64       break;
  65     }
  66   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
  67     ptr->poll_timeout= (int32_t)data;
  68     break;
  69   case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
  70     ptr->connect_timeout= (int32_t)data;
  71     break;
  72   case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
  73     ptr->retry_timeout= (int32_t)data;
  74     break;
  75   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
  76     ptr->send_size= (int32_t)data;
  77     memcached_quit(ptr);
  78     break;
  79   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
  80     ptr->recv_size= (int32_t)data;
  81     memcached_quit(ptr);
  82     break;
  83   case MEMCACHED_BEHAVIOR_USER_DATA:
  84     return MEMCACHED_FAILURE;
  85   }
  86
  87   return MEMCACHED_SUCCESS;
  88 }
  89
  90 uint64_t memcached_behavior_get(memcached_st *ptr,
  91                                 memcached_behavior flag)
  92 {
  93   memcached_flags temp_flag= 0;
  94
  95   switch (flag)
  96   {
  97   case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
  98     temp_flag= MEM_SUPPORT_CAS;
  99     break;
 100   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
 101     temp_flag= MEM_USE_CACHE_LOOKUPS;
 102     break;
 103   case MEMCACHED_BEHAVIOR_NO_BLOCK:
 104     temp_flag= MEM_NO_BLOCK;
 105     break;
 106   case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
 107     temp_flag= MEM_BUFFER_REQUESTS;
 108     break;
 109   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
 110     temp_flag= MEM_TCP_NODELAY;
 111     break;
 112   case MEMCACHED_BEHAVIOR_VERIFY_KEY:
 113     temp_flag= MEM_VERIFY_KEY;
 114     break;
 115   case MEMCACHED_BEHAVIOR_DISTRIBUTION:
 116     return ptr->distribution;
 117   case MEMCACHED_BEHAVIOR_HASH:
 118     return ptr->hash;
 119   case MEMCACHED_BEHAVIOR_KETAMA:
 120     temp_flag= MEM_USE_KETAMA;
 121     break;
 122   case MEMCACHED_BEHAVIOR_SORT_HOSTS:
 123     temp_flag= MEM_USE_SORT_HOSTS;
 124     break;
 125   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
 126     {
 127       return (unsigned long long)ptr->poll_timeout;
 128     }
 129   case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
 130     {
 131       return (unsigned long long)ptr->connect_timeout;
 132     }
 133   case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
 134     {
 135       return (unsigned long long)ptr->retry_timeout;
 136     }
 137   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
 138     {
 139       int sock_size;
 140       socklen_t sock_length= sizeof(int);
 141
 142       /* REFACTOR */
 143       /* We just try the first host, and if it is down we return zero */
 144       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 145         return 0;
 146
 147       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 148                      SO_SNDBUF, &sock_size, &sock_length))
 149         return 0; /* Zero means error */
 150
 151       return sock_size;
 152     }
 153   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
 154     {
 155       int sock_size;
 156       socklen_t sock_length= sizeof(int);
 157
 158       /* REFACTOR */
 159       /* We just try the first host, and if it is down we return zero */
 160       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 161         return 0;
 162
 163       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 164                      SO_RCVBUF, &sock_size, &sock_length))
 165         return 0; /* Zero means error */
 166
 167       return sock_size;
 168     }
 169   case MEMCACHED_BEHAVIOR_USER_DATA:
 170     return MEMCACHED_FAILURE;
 171   }
 172
 173   WATCHPOINT_ASSERT(temp_flag); /* Programming mistake if it gets this far */
 174   if (ptr->flags & temp_flag)
 175     return 1;
 176   else
 177     return 0;
 178
 179   return MEMCACHED_SUCCESS;
 180 }