os/

The os/ headers are small userspace primitives shared across the system: unified logging (os_log) and signposts, unfair locks, workgroups for realtime workloads, wall/monotonic clock helpers, checked arithmetic, and reference-counted os_object types.

os/activity.h
os/atomic.h@file <os/atomic.h>
os/availability.hAPI_TO_BE_DEPRECATED is used as a version number in API that will be deprecated
os/base.h<sys/_types/_os_inline.h>
os/clock.h
os/lock.h@header
os/log.h
os/object.h@header
os/os_sync_wait_on_address.h@header
os/overflow.hFacilities for performing type- and overflow-checked arithmetic. These
os/proc.h@header
os/signpost.h@header os_signpost
os/trace.h
os/trace_base.h
os/workgroup.h
os/workgroup_base.h
os/workgroup_interval.hFor header doc
os/workgroup_object.hFor header doc
os/workgroup_parallel.hFor header doc