git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/memcached_quit.c

   1 #include "common.h"
   2
   3 /*
   4   This closes all connections (forces flush of input as well).
   5
   6   Maybe add a host specific, or key specific version?
   7
   8   The reason we send "quit" is that in case we have buffered IO, this
   9   will force data to be completed.
  10 */
  11
  12 void memcached_quit_server(memcached_server_st *ptr, uint8_t io_death)
  13 {
  14   if (ptr->fd != -1)
  15   {
  16     if (io_death == 0 && ptr->type != MEMCACHED_CONNECTION_UDP)
  17     {
  18       memcached_return rc;
  19       ssize_t read_length;
  20       char buffer[MEMCACHED_MAX_BUFFER];
  21
  22       if (ptr->root->flags & MEM_BINARY_PROTOCOL)
  23       {
  24         protocol_binary_request_quit request = {.bytes= {0}};
  25         request.message.header.request.magic = PROTOCOL_BINARY_REQ;
  26         request.message.header.request.opcode = PROTOCOL_BINARY_CMD_QUIT;
  27         request.message.header.request.datatype = PROTOCOL_BINARY_RAW_BYTES;
  28         rc= memcached_do(ptr, request.bytes, sizeof(request.bytes), 1);
  29       }
  30       else
  31         rc= memcached_do(ptr, "quit\r\n", 6, 1);
  32
  33       WATCHPOINT_ASSERT(rc == MEMCACHED_SUCCESS || rc == MEMCACHED_FETCH_NOTFINISHED);
  34
  35       /* read until socket is closed, or there is an error
  36        * closing the socket before all data is read
  37        * results in server throwing away all data which is
  38        * not read
  39        */
  40       while ((read_length=
  41               memcached_io_read(ptr, buffer, sizeof(buffer)/sizeof(*buffer)))
  42              > 0);
  43     }
  44     memcached_io_close(ptr);
  45
  46     ptr->fd= -1;
  47     ptr->write_buffer_offset= (ptr->type == MEMCACHED_CONNECTION_UDP) ? UDP_DATAGRAM_HEADER_LENGTH : 0 ;
  48     ptr->read_buffer_length= 0;
  49     ptr->read_ptr= ptr->read_buffer;
  50     memcached_server_response_reset(ptr);
  51   }
  52
  53   ptr->server_failure_counter++;
  54 }
  55
  56 void memcached_quit(memcached_st *ptr)
  57 {
  58   unsigned int x;
  59
  60   if (ptr->hosts == NULL ||
  61       ptr->number_of_hosts == 0)
  62     return;
  63
  64   if (ptr->hosts && ptr->number_of_hosts)
  65   {
  66     for (x= 0; x < ptr->number_of_hosts; x++)
  67       memcached_quit_server(&ptr->hosts[x], 0);
  68   }
  69 }