question: static final void cancelIgnoringExceptions ( ForkJoinTask < ? > t ) { if ( t != null && t . status >= 0 ) { try { t . cancel ( false ) ; } catch ( Throwable ignore ) { } } }
target:  Cancels, ignoring any exceptions thrown by cancel. Used during worker and pool shutdown. Cancel is spec'ed not to throw any exceptions, but if it does anyway, we have no recourse during shutdown, so guard against this case.