git.m6w6.name Git - awesomized/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     ptr->distribution= (memcached_server_distribution)(data);
  42     break;
  43   case MEMCACHED_BEHAVIOR_HASH:
  44     ptr->hash= (memcached_hash)(data);
  45     break;
  46   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
  47     set_behavior_flag(ptr, MEM_USE_CACHE_LOOKUPS, data);
  48     memcached_quit(ptr);
  49     break;
  50   case MEMCACHED_BEHAVIOR_VERIFY_KEY:
  51     set_behavior_flag(ptr, MEM_VERIFY_KEY, data);
  52     break;
  53   case MEMCACHED_BEHAVIOR_KETAMA:
  54     set_behavior_flag(ptr, MEM_USE_KETAMA, data);
  55     break;
  56   case MEMCACHED_BEHAVIOR_SORT_HOSTS:
  57     set_behavior_flag(ptr, MEM_USE_SORT_HOSTS, data);
  58     break;
  59   case MEMCACHED_BEHAVIOR_USER_DATA:
  60     ptr->user_data= data;
  61     break;
  62   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
  63     ptr->poll_timeout= (int32_t)data;
  64     break;
  65   case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
  66     ptr->connect_timeout= (int32_t)data;
  67     break;
  68   case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
  69     ptr->retry_timeout= (int32_t)data;
  70     break;
  71   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
  72     ptr->send_size= (int32_t)data;
  73     memcached_quit(ptr);
  74     break;
  75   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
  76     ptr->recv_size= (int32_t)data;
  77     memcached_quit(ptr);
  78     break;
  79   }
  80
  81   return MEMCACHED_SUCCESS;
  82 }
  83
  84 unsigned long long memcached_behavior_get(memcached_st *ptr,
  85                                           memcached_behavior flag)
  86 {
  87   memcached_flags temp_flag= 0;
  88
  89   switch (flag)
  90   {
  91   case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
  92     temp_flag= MEM_SUPPORT_CAS;
  93     break;
  94   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
  95     temp_flag= MEM_USE_CACHE_LOOKUPS;
  96     break;
  97   case MEMCACHED_BEHAVIOR_NO_BLOCK:
  98     temp_flag= MEM_NO_BLOCK;
  99     break;
 100   case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
 101     temp_flag= MEM_BUFFER_REQUESTS;
 102     break;
 103   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
 104     temp_flag= MEM_TCP_NODELAY;
 105     break;
 106   case MEMCACHED_BEHAVIOR_VERIFY_KEY:
 107     temp_flag= MEM_VERIFY_KEY;
 108     break;
 109   case MEMCACHED_BEHAVIOR_DISTRIBUTION:
 110     return ptr->distribution;
 111   case MEMCACHED_BEHAVIOR_HASH:
 112     return ptr->hash;
 113   case MEMCACHED_BEHAVIOR_KETAMA:
 114     temp_flag= MEM_USE_KETAMA;
 115     break;
 116   case MEMCACHED_BEHAVIOR_SORT_HOSTS:
 117     temp_flag= MEM_USE_SORT_HOSTS;
 118     break;
 119   case MEMCACHED_BEHAVIOR_USER_DATA:
 120     return 0;
 121   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
 122     {
 123       return (unsigned long long)ptr->poll_timeout;
 124     }
 125   case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
 126     {
 127       return (unsigned long long)ptr->connect_timeout;
 128     }
 129   case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
 130     {
 131       return (unsigned long long)ptr->retry_timeout;
 132     }
 133   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
 134     {
 135       int sock_size;
 136       socklen_t sock_length= sizeof(int);
 137
 138       /* REFACTOR */
 139       /* We just try the first host, and if it is down we return zero */
 140       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 141         return 0;
 142
 143       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 144                      SO_SNDBUF, &sock_size, &sock_length))
 145         return 0; /* Zero means error */
 146
 147       return sock_size;
 148     }
 149   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
 150     {
 151       int sock_size;
 152       socklen_t sock_length= sizeof(int);
 153
 154       /* REFACTOR */
 155       /* We just try the first host, and if it is down we return zero */
 156       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 157         return 0;
 158
 159       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 160                      SO_RCVBUF, &sock_size, &sock_length))
 161         return 0; /* Zero means error */
 162
 163       return sock_size;
 164     }
 165   }
 166
 167   WATCHPOINT_ASSERT(temp_flag); /* Programming mistake if it gets this far */
 168   if (ptr->flags & temp_flag)
 169     return 1;
 170   else
 171     return 0;
 172
 173   return MEMCACHED_SUCCESS;
 174 }