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_MD5_HASHING:
  36     set_behavior_flag(ptr, MEM_USE_MD5, 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_MD5_HASHING:
  74     temp_flag= MEM_USE_MD5;
  75     break;
  76   case MEMCACHED_BEHAVIOR_KETAMA:
  77     temp_flag= MEM_USE_KETAMA;
  78     break;
  79   case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
  80     {
  81       int sock_size;
  82       socklen_t sock_length= sizeof(int);
  83
  84       /* We just try the first host, and if it is down we return zero */
  85       if ((memcached_connect(ptr, 0)) != MEMCACHED_SUCCESS)
  86         return 0;
  87
  88       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
  89                      SO_SNDBUF, &sock_size, &sock_length))
  90         return 0; /* Zero means error */
  91
  92       return sock_size;
  93     }
  94   case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
  95     {
  96       int sock_size;
  97       socklen_t sock_length= sizeof(int);
  98
  99       /* We just try the first host, and if it is down we return zero */
 100       if ((memcached_connect(ptr, 0)) != MEMCACHED_SUCCESS)
 101         return 0;
 102
 103       if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
 104                      SO_RCVBUF, &sock_size, &sock_length))
 105         return 0; /* Zero means error */
 106
 107       return sock_size;
 108     }
 109   }
 110
 111   assert(temp_flag); /* Programming mistake if it gets this far */
 112   if (ptr->flags & temp_flag)
 113     return 1;
 114   else
 115     return 0;
 116
 117   return MEMCACHED_SUCCESS;
 118 }