The _lwp_setprivate() function stores the value specified by buffer in LWP-private memory that is unique to the calling LWP. This is typically used by thread library implementations to maintain a pointer to information about the thread currently running on the calling LWP.

The _lwp_getprivate() function returns the value stored in LWP-private memory.

See attributes(5) for descriptions of the following attributes:

_lwp_makecontext(2), attributes(5)