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     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_POLL_TIMEOUT:
  60     ptr->poll_timeout= (int32_t)data;
  61     break;
  62   case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
  63     ptr->connect_timeout= (int32_t)data;
  64     break;
  65   case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
  66     ptr->retry_timeout= (int32_t)data;
  67     break;
  68   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
  69     ptr->send_size= (int32_t)data;
  70     memcached_quit(ptr);
  71     break;
  72   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
  73     ptr->recv_size= (int32_t)data;
  74     memcached_quit(ptr);
  75     break;
  76   case MEMCACHED_BEHAVIOR_USER_DATA:
  77     return MEMCACHED_FAILURE;
  78   }
  79
  80   return MEMCACHED_SUCCESS;
  81 }
  82
  83 uint64_t memcached_behavior_get(memcached_st *ptr,
  84                                 memcached_behavior flag)
  85 {
  86   memcached_flags temp_flag= 0;
  87
  88   switch (flag)
  89   {
  90   case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
  91     temp_flag= MEM_SUPPORT_CAS;
  92     break;
  93   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
  94     temp_flag= MEM_USE_CACHE_LOOKUPS;
  95     break;
  96   case MEMCACHED_BEHAVIOR_NO_BLOCK:
  97     temp_flag= MEM_NO_BLOCK;
  98     break;
  99   case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
 100     temp_flag= MEM_BUFFER_REQUESTS;
 101     break;
 102   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
 103     temp_flag= MEM_TCP_NODELAY;
 104     break;
 105   case MEMCACHED_BEHAVIOR_VERIFY_KEY:
 106     temp_flag= MEM_VERIFY_KEY;
 107     break;
 108   case MEMCACHED_BEHAVIOR_DISTRIBUTION:
 109     return ptr->distribution;
 110   case MEMCACHED_BEHAVIOR_HASH:
 111     return ptr->hash;
 112   case MEMCACHED_BEHAVIOR_KETAMA:
 113     temp_flag= MEM_USE_KETAMA;
 114     break;
 115   case MEMCACHED_BEHAVIOR_SORT_HOSTS:
 116     temp_flag= MEM_USE_SORT_HOSTS;
 117     break;
 118   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
 119     {
 120       return (unsigned long long)ptr->poll_timeout;
 121     }
 122   case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
 123     {
 124       return (unsigned long long)ptr->connect_timeout;
 125     }
 126   case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
 127     {
 128       return (unsigned long long)ptr->retry_timeout;
 129     }
 130   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
 131     {
 132       int sock_size;
 133       socklen_t sock_length= sizeof(int);
 134
 135       /* REFACTOR */
 136       /* We just try the first host, and if it is down we return zero */
 137       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 138         return 0;
 139
 140       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 141                      SO_SNDBUF, &sock_size, &sock_length))
 142         return 0; /* Zero means error */
 143
 144       return sock_size;
 145     }
 146   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
 147     {
 148       int sock_size;
 149       socklen_t sock_length= sizeof(int);
 150
 151       /* REFACTOR */
 152       /* We just try the first host, and if it is down we return zero */
 153       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 154         return 0;
 155
 156       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 157                      SO_RCVBUF, &sock_size, &sock_length))
 158         return 0; /* Zero means error */
 159
 160       return sock_size;
 161     }
 162   case MEMCACHED_BEHAVIOR_USER_DATA:
 163     return MEMCACHED_FAILURE;
 164   }
 165
 166   WATCHPOINT_ASSERT(temp_flag); /* Programming mistake if it gets this far */
 167   if (ptr->flags & temp_flag)
 168     return 1;
 169   else
 170     return 0;
 171
 172   return MEMCACHED_SUCCESS;
 173 }