_lwp_wakeup(2) [netbsd man page]

_LWP_WAKEUP(2)						      BSD System Calls Manual						    _LWP_WAKEUP(2)

NAME

     _lwp_wakeup -- make a blocked light-weight process runnable

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <lwp.h>

     int
     _lwp_wakeup(lwpid_t lwp);

DESCRIPTION

     _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 kernel.

RETURN VALUES

     Upon successful completion, _lwp_wakeup() returns a value of 0.  Otherwise, an error code is returned to indicate the error.

ERRORS

     _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.

HISTORY

     The _lwp_wakeup() system call first appeared in NetBSD 2.0.

BSD
								 January 13, 2003							       BSD

_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