git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/do.cc

   1 /* LibMemcached
   2  * Copyright (C) 2006-2010 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary:
   9  *
  10  */
  11
  12 #include <libmemcached/common.h>
  13
  14 memcached_return_t memcached_do(memcached_server_write_instance_st ptr, const void *command,
  15                                 size_t command_length, bool with_flush)
  16 {
  17   memcached_return_t rc;
  18   ssize_t sent_length;
  19
  20   WATCHPOINT_ASSERT(command_length);
  21   WATCHPOINT_ASSERT(command);
  22
  23   if (memcached_failed(rc= memcached_connect(ptr)))
  24   {
  25     WATCHPOINT_ASSERT(rc == memcached_last_error(ptr->root));
  26     WATCHPOINT_ERROR(rc);
  27     return rc;
  28   }
  29
  30   /*
  31   ** Since non buffering ops in UDP mode dont check to make sure they will fit
  32   ** before they start writing, if there is any data in buffer, clear it out,
  33   ** otherwise we might get a partial write.
  34   **/
  35   if (ptr->type == MEMCACHED_CONNECTION_UDP && with_flush && ptr->write_buffer_offset > UDP_DATAGRAM_HEADER_LENGTH)
  36   {
  37     memcached_io_write(ptr, NULL, 0, true);
  38   }
  39
  40   sent_length= memcached_io_write(ptr, command, command_length, with_flush);
  41
  42   if (sent_length == -1 || (size_t)sent_length != command_length)
  43   {
  44     rc= MEMCACHED_WRITE_FAILURE;
  45   }
  46   else if ((ptr->root->flags.no_reply) == 0)
  47   {
  48     memcached_server_response_increment(ptr);
  49   }
  50
  51   return rc;
  52 }
  53
  54 memcached_return_t memcached_vdo(memcached_server_write_instance_st ptr,
  55                                  const struct libmemcached_io_vector_st *vector, size_t count,
  56                                  bool with_flush)
  57 {
  58   memcached_return_t rc;
  59   ssize_t sent_length;
  60
  61   WATCHPOINT_ASSERT(count);
  62   WATCHPOINT_ASSERT(vector);
  63
  64   if ((rc= memcached_connect(ptr)) != MEMCACHED_SUCCESS)
  65   {
  66     WATCHPOINT_ERROR(rc);
  67     return rc;
  68   }
  69
  70   /*
  71   ** Since non buffering ops in UDP mode dont check to make sure they will fit
  72   ** before they start writing, if there is any data in buffer, clear it out,
  73   ** otherwise we might get a partial write.
  74   **/
  75   if (ptr->type == MEMCACHED_CONNECTION_UDP && with_flush && ptr->write_buffer_offset > UDP_DATAGRAM_HEADER_LENGTH)
  76   {
  77     memcached_io_write(ptr, NULL, 0, true);
  78   }
  79
  80   sent_length= memcached_io_writev(ptr, vector, count, with_flush);
  81
  82   size_t command_length= 0;
  83   for (uint32_t x= 0; x < count; ++x, vector++)
  84   {
  85     command_length+= vector->length;
  86   }
  87
  88   if (sent_length == -1 || (size_t)sent_length != command_length)
  89   {
  90     rc= MEMCACHED_WRITE_FAILURE;
  91     WATCHPOINT_ERROR(rc);
  92     WATCHPOINT_ERRNO(errno);
  93   }
  94   else if ((ptr->root->flags.no_reply) == 0)
  95   {
  96     memcached_server_response_increment(ptr);
  97   }
  98
  99   return rc;
 100 }