Object Oriented Design Examples: Hierarchical_State

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Detailed Description

Suspect state needs to override some of the methods of the base Out_Of_Service state.


Public Member Functions
void	On_Diagnostics_Failed (Hierarchical_State_Machine &u, const Message *p_Message)
	Suspect state handling of the diagnostics failure message.
void	On_Diagnostics_Passed (Hierarchical_State_Machine &u, const Message *p_Message)
	Diagnostics pass message has been received in Suspect state.
void	On_Operator_Inservice (Hierarchical_State_Machine &u, const Message *p_Message)
	Inservice request is received when still running diagnostics in Suspect state.

Member Function Documentation

void Hierarchical_State_Machine::Suspect::On_Diagnostics_Failed	(	Hierarchical_State_Machine &	u,
		const Message *	p_Message
	)	`[virtual]`

Suspect state handling of the diagnostics failure message.

The following actions are performed:

Inform the operator about diagnostics failure
Change to Failed state
Parameters:
u Reference to the state machine object
p_Message Pointer to the message being processed

00144 {
00145     u.Send_Diagnostics_Failure_Report();
00146     u.Next_State(u.Failed_State);
00147 }

void Hierarchical_State_Machine::Suspect::On_Diagnostics_Passed	(	Hierarchical_State_Machine &	u,
		const Message *	p_Message
	)	`[virtual]`

Diagnostics pass message has been received in Suspect state.

Perform the following actions:

Inform operator
Clear the loss of redunadacy alarm
Move to the standby state (somebody else must be active already)
Parameters:
u Reference to the state machine object
p_Message Pointer to the message being processed

00157 {
00158     u.Send_Diagnostics_Pass_Report();
00159     u.Clear_Alarm(LOSS_OF_REDUNDANCY);
00160     u.Next_State(u.Standby_State);
00161 }

void Hierarchical_State_Machine::Suspect::On_Operator_Inservice	(	Hierarchical_State_Machine &	u,
		const Message *	p_Message
	)	`[virtual]`

Inservice request is received when still running diagnostics in Suspect state.

Just abort the diagnostics and invole the base class handler to perform the common handling.

Parameters:

u	Reference to the state machine object
p_Message	Pointer to the message being processed

00169 {
00170     u.Abort_Diagnostics();
00171     Out_Of_Service::On_Operator_Inservice(u, p_Message); 
00172 }

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Hierarchical_State_Machine::Suspect Class Reference