Overview

Module vivaldi_latency

• Description
• Data Types
• Function Index
• Function Details

Copyright © 2009-2015 Zuse Institute Berlin

Version: $Id$

Behaviours: gen_component.

Authors: Thorsten Schuett (schuett@zib.de).

Description

Data Types

erlang_timestamp()

erlang_timestamp() = 
    {MegaSecs :: non_neg_integer(),
     Secs :: 0..999999,
     MicroSecs :: 0..999999}

message()

message() = 
    {{pong, PidName :: pid_groups:pidname() | undefined},
     Count :: pos_integer()} |
    {start_ping} |
    {shutdown} |
    {'DOWN',
     MonitorRef :: reference(),
     process,
     Owner :: comm:erl_local_pid(),
     Info :: any()}

state()

state() = 
    {Owner :: comm:erl_local_pid(),
     RemotePid :: comm:mypid(),
     Token ::
         {gossip_vivaldi:network_coordinate(),
          gossip_vivaldi:est_error()},
     Start :: erlang_timestamp() | unknown,
     Count :: non_neg_integer(),
     Latencies :: [gossip_vivaldi:latency()]}

Function Index

Function Details

start_gen_component/5

start_gen_component(Module :: module(),
                    Handler :: gen_component:handler(),
                    Args :: term(),
                    Options :: [gen_component:option()],
                    Self :: pid()) ->
                       no_return() | ok

on/2

on(Message :: message(), State :: state()) -> state()

message handler

init/1

init(X1 ::
         {pid(),
          comm:mypid(),
          {gossip_vivaldi:network_coordinate(),
           gossip_vivaldi:est_error()}}) ->
        state()

measure_latency/3

measure_latency(RemotePid :: comm:mypid(),
                RemoteCoordinate ::
                    gossip_vivaldi:network_coordinate(),
                RemoteConfidence :: gossip_vivaldi:est_error()) ->
                   {ok, pid()}

check_config/0

check_config() -> boolean()

Checks whether config parameters of the vivaldi_latency process exist and are valid.

Overview

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