[boost] Boost MSM parallel behavior with delayed self-transitions?

Subject: [boost] Boost MSM parallel behavior with delayed self-transitions?
From: Danylo Malyuta (danylo.malyuta_at_[hidden])
Date: 2017-03-21 07:37:01

Hi community,

This is my first post, so I'm sorry for any mistakes in style. I have 
also posted this question on StackOverflow: 
http://stackoverflow.com/questions/42920777/boost-msm-parallel-behavior-with-delayed-self-transitions.

I am using Boost MSM (basic and functor front-ends) and am trying to 
implement the following state machine (https://i.stack.imgur.com/K79qk.png):

enter image description here

I am using Boost MSM (basic and functor front-ends) and am trying to 
implement the following state machine: enter image description here

In words:

1. Enter state State1
2. Enter state A and execute action_A. After 2 seconds, print "Trying 
again..." and re-execute state A (i.e. call its entry action). This 
loops forever...
3. At the same time as 2 (i.e. "in parallel"), enter state B and execute 
action_B. After 5 seconds, print "Trying again..." and re-execute state 
B (i.e. call its entry action). This loops forever...

I would like to know the way to create this state machine in Boost MSM. 
There are two tricks here which I cannot figure out how to do:

  - Execution in parallel (i.e. running action_A does not stop running 
action_B at the same time)
  - Delayed transition (i.e. the transitions which happen after 2 
seconds for state A and after 5 seconds for state B). Neither delay 
should be blocking! The transitions should just "fire" after this time.

Thank you very much for helping,

Danylo.