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9.7 Select Statements -- TOC

(1)

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

(2)
       select_statement ::=
          selective_accept
         | timed_entry_call
         | conditional_entry_call
         | asynchronous_select

Examples

(3)

Example of a select statement:

(4)
       select
          accept Driver_Awake_Signal;
       or
          delay 30.0*Seconds;
          Stop_The_Train;
       end select;

Subclauses

1. Selective Accept
2. Timed Entry Calls
3. Conditional Entry Calls
4. Asynchronous Transfer of Control

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