9.7 Select Statements

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There are four forms of the select_statement. One form provides a selective wait for one or more select_alternatives. Two provide timed and conditional entry calls. The fourth provides asynchronous transfer of control.

Syntax

select_statement ::=
    selective_accept
  | timed_entry_call
  | conditional_entry_call
  | asynchronous_select

Examples

Example of a select statement:

select 
    accept Driver_Awake_Signal;
or 
    delay 30.0*Seconds; 
    Stop_The_Train;
end select;

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