Defines in iokit/include/bsddev/machine

• _BSD_DEV_MACHINE_EVENT_H_ iokit/include/bsddev/machine/event.h:23
• _BSD_DEV_MACHINE_EVENTSHMEMLOCK_H_ iokit/include/bsddev/machine/EventShmemLock.h:23
• _BSD_DEV_MACHINE_EVIO_H_ iokit/include/bsddev/machine/evio.h:23
• _BSD_DEV_MACHINE_EVSIO_H_ iokit/include/bsddev/machine/evsio.h:23