dispatch/dispatch.h

includes: Availability.h, os/availability.h, TargetConditionals.h, os/base.h, sys/types.h, stddef.h, stdint.h, stdbool.h, stdarg.h, string.h, unistd.h, fcntl.h, os/object.h, os/workgroup.h, dispatch/base.h, dispatch/time.h, dispatch/object.h, dispatch/queue.h, dispatch/block.h, dispatch/source.h, dispatch/group.h, dispatch/semaphore.h, dispatch/once.h, dispatch/data.h, dispatch/io.h, dispatch/workloop.h, dispatch/dispatch_swift_shims.h

1 macro

#define DISPATCH_API_VERSION 20181008