Re: [Boost-users] Statechart problem

Subject: Re: [Boost-users] Statechart problem
From: Iwan Sanders (iwan.sanders_at_[hidden])
Date: 2009-03-25 10:24:52

Hi thanks for looking into the issue (which is driving me nuts)

I've defines the following Receiving state:

namespace sc = boost::statechart;
namespace mpl = boost::mpl;

struct EvNewFrame : sc::event< EvNewFrame > {};
struct EvNeedFlowControl : sc::event< EvNeedFlowControl > {};
struct EvDoneReceiving : sc::event<EvDoneReceiving> {};

struct Idle_Receiving;
struct ParseFrame;
struct Receiving : ICANMonitorClient, sc::state< Receiving, USDTTransmitter,
Idle_Receiving >
{
  typedef mpl::list<
    sc::custom_reaction< EvAbort >,
    //sc::deferral< EvNewFrame >,
    sc::transition< EvNewFrame, ParseFrame >,
    sc::transition< EvDoneReceiving , Finished> > reactions;

  Receiving( my_context ctx );
  ~Receiving();

  sc::result react( const EvAbort& );

  *virtual void UpdateNewCANMessage(CANMessageId pMsgFilter, TT_CANMsg*
pMsg);*

  TT_CANMsg* newCANMessage;

  std::vector<_u8> wb;
  bool DoneReceiving;

};

The UpdateNewCANMessage is a callback function defined in the
ICANMonitorClient interface. This method is being called when new data
frames arrive (that works) but then I want to notify the state machine to
proceed to its next state effectively by sending an EvNewFrame event but
nothing happens.

I tried this->post_event( EvNewFrame() ); // no effect
and this->post_event( boost::intrusive_ptr<EvNewFrame>( new EvNewFrame( ) )
); // no effect

(this->terminate() still works in this method on the other hand)

Regards

On Wed, Mar 25, 2009 at 15:15, Igor R <boost.lists_at_[hidden]> wrote:

> > But then when I want to notify the state that the machine is currently in
> > with a post_event this event seems to be discarded even though it should
> > react on it (the machine state has transitions defined for this event and
> > the current state is that state). I also tried using the transit call but
> > that doesn't do anything either.
>
> Do you try to post_event from a state constructor? How is this state
> defined exaclty?
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