git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/udp.hpp

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  37
  38 #define MAX_UDP_DATAGRAM_LENGTH 1400
  39 #define UDP_DATAGRAM_HEADER_LENGTH 8
  40 #define UDP_REQUEST_ID_MSG_SIG_DIGITS 10
  41 #define UDP_REQUEST_ID_THREAD_MASK 0xFFFF << UDP_REQUEST_ID_MSG_SIG_DIGITS
  42 #define get_udp_datagram_request_id(A) ntohs((A)->request_id)
  43 #define get_udp_datagram_seq_num(A) ntohs((A)->sequence_number)
  44 #define get_udp_datagram_num_datagrams(A) ntohs((A)->num_datagrams)
  45 #define get_msg_num_from_request_id(A) ( (A) & (~(UDP_REQUEST_ID_THREAD_MASK)) )
  46 #define get_thread_id_from_request_id(A) ( (A) & (UDP_REQUEST_ID_THREAD_MASK) ) >> UDP_REQUEST_ID_MSG_SIG_DIGITS
  47 #define generate_udp_request_thread_id(A) (A) << UDP_REQUEST_ID_MSG_SIG_DIGITS
  48 #define UDP_REQUEST_ID_MAX_THREAD_ID get_thread_id_from_request_id(0xFFFF)
  49
  50 struct udp_datagram_header_st
  51 {
  52   uint16_t request_id;
  53   uint16_t sequence_number;
  54   uint16_t num_datagrams;
  55   uint16_t reserved;
  56 };
  57
  58 bool memcached_io_init_udp_header(memcached_instance_st*, const uint16_t thread_id);
  59 void increment_udp_message_id(memcached_instance_st*);