DMTCP_EVENT_DRAIN  546 dmtcpworker.cpp   eventHook(DMTCP_EVENT_DRAIN, NULL);
DMTCP_EVENT_DRAIN  132 plugin/ipc/connectionlist.cpp     case DMTCP_EVENT_DRAIN:
DMTCP_EVENT_DRAIN   47 plugin/ipc/ssh/ssh.cpp     case DMTCP_EVENT_DRAIN:
DMTCP_EVENT_DRAIN  113 plugin/svipc/sysvipc.cpp     case DMTCP_EVENT_DRAIN:
DMTCP_EVENT_DRAIN   76 processinfo.cpp     case DMTCP_EVENT_DRAIN: