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     break;
  35   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
  36     set_behavior_flag(ptr, MEM_TCP_NODELAY, data);
  37     break;
  38   case MEMCACHED_BEHAVIOR_HASH:
  39     ptr->hash= *(memcached_hash *)(data);
  40     break;
  41   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
  42     set_behavior_flag(ptr, MEM_USE_CACHE_LOOKUPS, data);
  43     break;
  44   case MEMCACHED_BEHAVIOR_KETAMA:
  45     set_behavior_flag(ptr, MEM_USE_KETAMA, data);
  46     break;
  47   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
  48     {
  49       unsigned int timeout= (*((unsigned int *)data));
  50
  51       ptr->poll_timeout= timeout;
  52       break;
  53     }
  54   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
  55     {
  56       ptr->send_size= (*((int *)data));
  57       memcached_quit(ptr);
  58       break;
  59     }
  60   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
  61     {
  62       ptr->recv_size= (*((int *)data));
  63       memcached_quit(ptr);
  64       break;
  65     }
  66
  67
  68   }
  69
  70   return MEMCACHED_SUCCESS;
  71 }
  72
  73 unsigned long long memcached_behavior_get(memcached_st *ptr,
  74                                           memcached_behavior flag)
  75 {
  76   memcached_flags temp_flag= 0;
  77
  78   switch (flag)
  79   {
  80   case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
  81     temp_flag= MEM_SUPPORT_CAS;
  82     break;
  83   case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
  84     temp_flag= MEM_USE_CACHE_LOOKUPS;
  85     break;
  86   case MEMCACHED_BEHAVIOR_NO_BLOCK:
  87     temp_flag= MEM_NO_BLOCK;
  88     break;
  89   case MEMCACHED_BEHAVIOR_TCP_NODELAY:
  90     temp_flag= MEM_TCP_NODELAY;
  91     break;
  92   case MEMCACHED_BEHAVIOR_HASH:
  93     return ptr->hash;
  94   case MEMCACHED_BEHAVIOR_KETAMA:
  95     temp_flag= MEM_USE_KETAMA;
  96     break;
  97   case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
  98     {
  99       return (unsigned long long)ptr->poll_timeout;
 100     }
 101   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
 102     {
 103       int sock_size;
 104       socklen_t sock_length= sizeof(int);
 105
 106       /* We just try the first host, and if it is down we return zero */
 107       if ((memcached_connect(ptr, 0)) != MEMCACHED_SUCCESS)
 108         return 0;
 109
 110       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 111                      SO_SNDBUF, &sock_size, &sock_length))
 112         return 0; /* Zero means error */
 113
 114       return sock_size;
 115     }
 116   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
 117     {
 118       int sock_size;
 119       socklen_t sock_length= sizeof(int);
 120
 121       /* We just try the first host, and if it is down we return zero */
 122       if ((memcached_connect(ptr, 0)) != MEMCACHED_SUCCESS)
 123         return 0;
 124
 125       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 126                      SO_RCVBUF, &sock_size, &sock_length))
 127         return 0; /* Zero means error */
 128
 129       return sock_size;
 130     }
 131   }
 132
 133   WATCHPOINT_ASSERT(temp_flag); /* Programming mistake if it gets this far */
 134   if (ptr->flags & temp_flag)
 135     return 1;
 136   else
 137     return 0;
 138
 139   return MEMCACHED_SUCCESS;
 140 }