PPT Slide

task READER_WRITER is

procedure READ (V: out ELEM) ;

entry WRITE (E: in ELEM) ;

end ;

task body READER_WRITER is

VARIABLE : ELEM ;

READERS: INTEGER := 0 ;

entry START_READ ;

entry STOP_READ ;

procedure READ (V: out ELEM) is

begin

START_READ ;

V := VARIABLE ;

STOP_READ ;

end ;

Readers and Writers Problem 2

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