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