_LWP_WAKEUP(2) System Calls Manual _LWP_WAKEUP(2)
_lwp_wakeup -- make a blocked light-weight process runnable
Standard C Library (libc, -lc)
_lwp_wakeup() makes a blocked LWP runnable. The blocked LWP must be in
LSSLEEP state. Unblocking the LWP does not guarantee that it will make
progress; it may block again as soon as it resumes execution in the
Upon successful completion, _lwp_wakeup() returns a value of 0.
Otherwise, an error code is returned to indicate the error.
_lwp_wakeup() will fail if:
[ESRCH] No LWP can be found in the current process corresponding to
that specified by lwp.
[ENODEV] The specified LWP is not in LSSLEEP state.
[EBUSY] The specified LWP is blocked in an uninterruptible sleep.
The _lwp_wakeup() system call first appeared in NetBSD 2.0.
NetBSD 6.1.5 January 13, 2003 NetBSD 6.1.5