Signal the parent process when we're ready to serve requests.
Signal the parent process when we're ready to serve requests.

This can be used for a hot reload of the process binary. The supervising
process can be told when the new process is ready to serve requests.

hydrays/osrm-backend,KnockSoftware/osrm-backend,KnockSoftware/osrm-backend,oxidase/osrm-backend,felixguendling/osrm-backend,KnockSoftware/osrm-backend,duizendnegen/osrm-backend,frodrigo/osrm-backend,Project-OSRM/osrm-backend,raymond0/osrm-backend,hydrays/osrm-backend,duizendnegen/osrm-backend,Project-OSRM/osrm-backend,oxidase/osrm-backend,KnockSoftware/osrm-backend,bjtaylor1/osrm-backend,deniskoronchik/osrm-backend,beemogmbh/osrm-backend,deniskoronchik/osrm-backend,raymond0/osrm-backend,hydrays/osrm-backend,duizendnegen/osrm-backend,raymond0/osrm-backend,bjtaylor1/osrm-backend,felixguendling/osrm-backend,raymond0/osrm-backend,yuryleb/osrm-backend,bjtaylor1/osrm-backend,beemogmbh/osrm-backend,duizendnegen/osrm-backend,Project-OSRM/osrm-backend,neilbu/osrm-backend,frodrigo/osrm-backend,Project-OSRM/osrm-backend,oxidase/osrm-backend,neilbu/osrm-backend,frodrigo/osrm-backend,yuryleb/osrm-backend,neilbu/osrm-backend,bjtaylor1/osrm-backend,yuryleb/osrm-backend,yuryleb/osrm-backend,oxidase/osrm-backend,deniskoronchik/osrm-backend,felixguendling/osrm-backend,deniskoronchik/osrm-backend,beemogmbh/osrm-backend,neilbu/osrm-backend,frodrigo/osrm-backend,beemogmbh/osrm-backend,hydrays/osrm-backend