public final class ExecutionList extends Object
ListenableFuture
implementations to manage their listeners. An instance contains a list of listeners, each with an associated
Executor
, and guarantees that every
Runnable
that is
added will be executed after
execute()
is called. Any
Runnable
added after the call to
execute
is still guaranteed to execute. There is no guarantee, however, that listeners will be executed in the order that they are added.
Exceptions thrown by a listener will be propagated up to the executor. Any exception thrown during Executor.execute
(e.g., a RejectedExecutionException
or an exception thrown by direct execution) will be caught and logged.
Constructor and Description |
---|
ExecutionList()
Creates a new, empty
ExecutionList .
|
public ExecutionList()
ExecutionList
.
public void add(Runnablerunnable, Executor executor)
Runnable
and accompanying
Executor
to the list of listeners to execute. If execution has already begun, the listener is executed immediately.
When selecting an executor, note that directExecutor
is dangerous in some cases. See the discussion in the ListenableFuture.addListener
documentation.
public void execute()
This method is idempotent. Calling it several times in parallel is semantically equivalent to calling it exactly once.
run
)