Merge lp:~tangent-org/libmemcached/1.0-build/ Build: jenkins-Libmemcached-248
[m6w6/libmemcached] / 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*);