git.m6w6.name Git - awesomized/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_POLL_TIMEOUT:
  53     {
  54       int32_t timeout= (*((int32_t *)data));
  55
  56       ptr->poll_timeout= timeout;
  57       break;
  58     }
  59   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
  60     {
  61       ptr->send_size= (*((int *)data));
  62       memcached_quit(ptr);
  63       break;
  64     }
  65   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
  66     {
  67       ptr->recv_size= (*((int *)data));
  68       memcached_quit(ptr);
  69       break;
  70     }
  71
  72
  73   }
  74
  75   return MEMCACHED_SUCCESS;
  76 }
  77
  78 unsigned long long memcached_behavior_get(memcached_st *ptr,
  79                                           memcached_behavior flag)
  80 {
  81   memcached_flags temp_flag= 0;
  82
  83   switch (flag)
  84   {
  85   case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
  86     temp_flag= MEM_SUPPORT_CAS;
  87     break;
  88   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
  89     temp_flag= MEM_USE_CACHE_LOOKUPS;
  90     break;
  91   case MEMCACHED_BEHAVIOR_NO_BLOCK:
  92     temp_flag= MEM_NO_BLOCK;
  93     break;
  94   case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
  95     temp_flag= MEM_BUFFER_REQUESTS;
  96     break;
  97   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
  98     temp_flag= MEM_TCP_NODELAY;
  99     break;
 100   case MEMCACHED_BEHAVIOR_DISTRIBUTION:
 101     return ptr->distribution;
 102   case MEMCACHED_BEHAVIOR_HASH:
 103     return ptr->hash;
 104   case MEMCACHED_BEHAVIOR_KETAMA:
 105     temp_flag= MEM_USE_KETAMA;
 106     break;
 107   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
 108     {
 109       return (unsigned long long)ptr->poll_timeout;
 110     }
 111   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
 112     {
 113       int sock_size;
 114       socklen_t sock_length= sizeof(int);
 115
 116       /* We just try the first host, and if it is down we return zero */
 117       if ((memcached_connect(ptr, 0)) != MEMCACHED_SUCCESS)
 118         return 0;
 119
 120       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 121                      SO_SNDBUF, &sock_size, &sock_length))
 122         return 0; /* Zero means error */
 123
 124       return sock_size;
 125     }
 126   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
 127     {
 128       int sock_size;
 129       socklen_t sock_length= sizeof(int);
 130
 131       /* We just try the first host, and if it is down we return zero */
 132       if ((memcached_connect(ptr, 0)) != MEMCACHED_SUCCESS)
 133         return 0;
 134
 135       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 136                      SO_RCVBUF, &sock_size, &sock_length))
 137         return 0; /* Zero means error */
 138
 139       return sock_size;
 140     }
 141   }
 142
 143   WATCHPOINT_ASSERT(temp_flag); /* Programming mistake if it gets this far */
 144   if (ptr->flags & temp_flag)
 145     return 1;
 146   else
 147     return 0;
 148
 149   return MEMCACHED_SUCCESS;
 150 }