handle sig int in separate thread this is needed since socket handle now masks all signals
handle sig int in separate thread
this is needed since socket handle now masks all signals

vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa