In Erlang SASL Crash Report, what exactly is the meaning of the "messages:" field?

Is the messages field in a sasl crash report the current content of the messages mailbox i.e. the unrecieved messages?

Or is it the messages history, the l开发者_StackOverflow社区ast received messages?

If it shows the received messages in what order are they shown?

=CRASH REPORT==== 8-May-2011::09:00:38 ===
  crasher:
    initial call: most_msgs:-connect/4-fun-0-/0
    pid: <0.181.0>
    registered_name: []
    exception exit: {tx_succ_timeout,mcm}
      in function  most_msgs:wait_tx_succ/4
    ancestors: [<0.178.0>,<0.177.0>,<0.175.0>,<0.174.0>,<0.173.0>,<0.172.0>]
    messages: [{send,{most_mcm,{most_fdh,mcm,undefined,undefined,968,6,255},
                                  80,set,undefined,undefined,
                                  <<244,239,62,2>>}},
                  {recv,{most_icm,768,status,<<2>>}},
                  {recv,{most_fifo_status,mcm,0,net_off,1}},
                  {send,{most_mcm,{most_fdh,mcm,undefined,undefined,968,6,255},
                                  80,set,undefined,undefined,
                                  <<244,223,62,128>>}},

http://www.erlang.org/doc/man/erlang.html#process_info-2

{messages, MessageQueue}

MessageQueue is a list of the messages to the process, which have not yet been processed.

Most of the information comes from process_info (lib/stdlib/src/proc_lib.erl). Not sure about the order of messages though.

it is the messages in the message queue at the time when the process crashed.