Ada Programming/Keywords/delay

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Contents 1 Delay statements 1.1 Relative delays 1.2 Absolute delays 2 Select statements 2.1 Delay alternative 2.2 Timed entry call 2.3 Asynchronous transfer of control 3 See also 3.1 Wikibook 3.2 Ada Reference Manual 3.3 Ada Quality and Style Guide

[edit] Delay statements

[edit] Relative delays

delay Wait_Time;

This language feature is only available in Ada 2005.

The Ravenscar profile forbids the use of the relative delay statement:

pragma Restrictions (No_Relative_Delay)

[edit] Absolute delays

delay until Next_Time;

[edit] Select statements

[edit] Delay alternative

Selective accept:

select
   when Cond =>
      accept_statement
      statements
or
  delay_alternative
end select;

[edit] Timed entry call

select
   entry_call_alternative
or
   delay_alternative
end select;

[edit] Asynchronous transfer of control

select
   delay until Abort_Time;
   statements
then abort
   abortable_part
end select;

[edit] See also

[edit] Wikibook

• Ada Programming
• Ada Programming/Keywords
• Ada Programming/Tasking
• Ada Programming/Pragmas/Restrictions/No_Relative_Delay

[edit] Ada Reference Manual

• 2.9 Reserved Words (Annotated)
• Annex P (informative) Syntax Summary (Annotated)

• 9.6 Delay Statements, Duration, and Time (Annotated)

• 9.7 Select Statements (Annotated)
• 9.7.1 Selective Accept (Annotated)
• 9.7.2 Timed Entry Calls (Annotated)
• 9.7.4 Asynchronous Transfer of Control (Annotated)

[edit] Ada Quality and Style Guide

• 3.1.3 Capitalization

• 6.1.7 Delay Statements

Ada Keywords

abort else new return abs elsif not reverse abstract (Ada 95) end null accept entry select access exception of separate aliased (Ada 95) exit or subtype all others synchronized (Ada 2005) and for out array function overriding (Ada 2005) tagged (Ada 95) at task generic package terminate begin goto pragma then body private type if procedure case in protected (Ada 95) until (Ada 95) constant interface (Ada 2005) use is raise declare range when delay limited record while delta loop rem with digits renames do mod requeue (Ada 95) xor