PUMPING_MSGS_BIT  121 ipc/ipc_message.h     return (header()->flags & PUMPING_MSGS_BIT) != 0;
PUMPING_MSGS_BIT   44 ipc/ipc_sync_message.h       header()->flags |= PUMPING_MSGS_BIT;
PUMPING_MSGS_BIT   46 ipc/ipc_sync_message.h       header()->flags &= ~PUMPING_MSGS_BIT;