git.m6w6.name Git - m6w6/libmemcached/blob - lib/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, void *data)
  13 {
  14   unsigned int *truefalse= (unsigned int *)data;
  15
  16   memcached_quit(ptr);
  17   if (truefalse)
  18     ptr->flags|= temp_flag;
  19   else
  20     ptr->flags+= temp_flag;
  21 }
  22
  23 memcached_return memcached_behavior_set(memcached_st *ptr,
  24                                         memcached_behavior flag,
  25                                         void *data)
  26 {
  27   switch (flag)
  28   {
  29   case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
  30     set_behavior_flag(ptr, MEM_SUPPORT_CAS, data);
  31     break;
  32   case MEMCACHED_BEHAVIOR_NO_BLOCK:
  33     set_behavior_flag(ptr, MEM_NO_BLOCK, data);
  34   case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
  35     set_behavior_flag(ptr, MEM_BUFFER_REQUESTS, data);
  36     break;
  37   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
  38     set_behavior_flag(ptr, MEM_TCP_NODELAY, data);
  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     break;
  49   case MEMCACHED_BEHAVIOR_KETAMA:
  50     set_behavior_flag(ptr, MEM_USE_KETAMA, data);
  51     break;
  52   case MEMCACHED_BEHAVIOR_SORT_HOSTS:
  53     set_behavior_flag(ptr, MEM_USE_SORT_HOSTS, data);
  54     break;
  55   case MEMCACHED_BEHAVIOR_USER_DATA:
  56     ptr->user_data= data;
  57     break;
  58   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
  59     {
  60       int32_t timeout= (*((int32_t *)data));
  61
  62       ptr->poll_timeout= timeout;
  63       break;
  64     }
  65   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
  66     {
  67       ptr->send_size= (*((int *)data));
  68       memcached_quit(ptr);
  69       break;
  70     }
  71   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
  72     {
  73       ptr->recv_size= (*((int *)data));
  74       memcached_quit(ptr);
  75       break;
  76     }
  77
  78
  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_DISTRIBUTION:
 107     return ptr->distribution;
 108   case MEMCACHED_BEHAVIOR_HASH:
 109     return ptr->hash;
 110   case MEMCACHED_BEHAVIOR_KETAMA:
 111     temp_flag= MEM_USE_KETAMA;
 112     break;
 113   case MEMCACHED_BEHAVIOR_SORT_HOSTS:
 114     temp_flag= MEM_USE_SORT_HOSTS;
 115     break;
 116   case MEMCACHED_BEHAVIOR_USER_DATA:
 117     return 0;
 118     //return (unsigned long long)ptr->user_data;
 119   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
 120     {
 121       return (unsigned long long)ptr->poll_timeout;
 122     }
 123   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
 124     {
 125       int sock_size;
 126       socklen_t sock_length= sizeof(int);
 127
 128       /* REFACTOR */
 129       /* We just try the first host, and if it is down we return zero */
 130       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 131         return 0;
 132
 133       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 134                      SO_SNDBUF, &sock_size, &sock_length))
 135         return 0; /* Zero means error */
 136
 137       return sock_size;
 138     }
 139   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
 140     {
 141       int sock_size;
 142       socklen_t sock_length= sizeof(int);
 143
 144       /* REFACTOR */
 145       /* We just try the first host, and if it is down we return zero */
 146       if ((memcached_connect(&ptr->hosts[0])) != MEMCACHED_SUCCESS)
 147         return 0;
 148
 149       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 150                      SO_RCVBUF, &sock_size, &sock_length))
 151         return 0; /* Zero means error */
 152
 153       return sock_size;
 154     }
 155   }
 156
 157   WATCHPOINT_ASSERT(temp_flag); /* Programming mistake if it gets this far */
 158   if (ptr->flags & temp_flag)
 159     return 1;
 160   else
 161     return 0;
 162
 163   return MEMCACHED_SUCCESS;
 164 }