netbsd man page for _lwp_unpark_all

_LWP_UNPARK_ALL(2)					      BSD System Calls Manual						_LWP_UNPARK_ALL(2)

NAME
     _lwp_unpark_all -- resume execution of a waiting LWP

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <lwp.h>

     ssize_t
     _lwp_unpark_all(lwpid_t *targets, size_t ntargets, const void *hint);

DESCRIPTION
     _lwp_unpark_all() resumes execution of one or more light-weight processes listed in the array pointed to by targets.

     The target LWPs are assumed to be waiting in the kernel as a result of calls to _lwp_park().  If any of the target LWPs are not currently
     waiting, those LWPs will return immediately upon the next call to _lwp_park().

     The value pointed to by ntargets specifies the size of the array pointed to by targets.  If the targets argument is given as NULL, the maxi-
     mum size of the array (expressed as the number of entries) is returned.

     See _lwp_park(2) for a description of the hint argument.

RETURN VALUES
     If the maximum size of the targets array is not being queried, a return of 0 indicates that the call succeeded.  A -1 return value indicates
     an error occurred and errno is set to indicate the reason.

ERRORS
     [EFAULT]  The value specified for targets is invalid.

     [EINVAL]  The value specified for ntargets is out of range.

     [ENOMEM]  Insufficient resources are available to complete the operation.

SEE ALSO
     _lwp_park(2), _lwp_unpark(2), _lwp_wakeup(2)

HISTORY
     The _lwp_unpark_all() system call first appeared in NetBSD 5.0.

BSD
								 February 10, 2007							       BSD