Ada Programming/Attributes/'Count

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Description

X'Count is an Ada attribute where X is an entry point in a protected type. This attribute returns the number of tasks currently enqueued waiting for entrance into the entry procedure.

Example

protected type My_Protected_Type is
  entry My_Entry;
  procedure Get_Count( Task_Count : out Natural );
end My_Protected_Type;
...
procedure body Get_Count( Task_Count : out Natural ) is begin
  Task_Count := My_Entry'Count;
end Get_Count;

See also

Wikibook

• Ada Programming
• Ada Programming/Tasking

Ada Reference Manual

• 13.3 Operational and Representation Attributes (Annotated)
• Annex K Language-Defined Attributes (Annotated)