empty

#empty

##Syntax empty (variableReference) : boolean

##Description The empty function is used in a concurrent program. It returns true if the variableReference, which must be a condition variable, has no processes waiting for it. Processes join the queue of a condition variable by executing the wait statement, and are awakened by the signal statement.

##See also condition.html, wait.html, signal.html, fork.html and monitor.html.

See also predefined unit concurrencymodule.html.