Use main worker as default if none is associated with current thread
Use main worker as default if none is associated with current thread

oberhamsi/ringojs,ashwinrayaprolu1984/ringojs,ashwinrayaprolu1984/ringojs,Transcordia/ringojs,Transcordia/ringojs,oberhamsi/ringojs,ashwinrayaprolu1984/ringojs,ashwinrayaprolu1984/ringojs,ringo/ringojs,ringo/ringojs,ringo/ringojs,ringo/ringojs,Transcordia/ringojs,Transcordia/ringojs,oberhamsi/ringojs