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