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Revision 1.6, Tue Nov 2 20:49:47 2010 UTC (13 years, 5 months ago) by skrll
Spell immediately correctly. |
.\" $NetBSD: _lwp_unpark_all.2,v 1.6 2010/11/02 20:49:47 skrll Exp $ .\" .\" Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. .\" All rights reserved. .\" .\" This code is derived from software contributed to The NetBSD Foundation .\" by Jason R. Thorpe of Wasabi Systems, Inc, and by Andrew Doran. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" .Dd February 10, 2007 .Dt _LWP_UNPARK_ALL 2 .Os .Sh NAME .Nm _lwp_unpark_all .Nd resume execution of a waiting LWP .Sh LIBRARY .Lb libc .Sh SYNOPSIS .In lwp.h .Ft ssize_t .Fn _lwp_unpark_all "lwpid_t *targets" "size_t ntargets" "const void *hint" .Sh DESCRIPTION .Fn _lwp_unpark_all resumes execution of one or more light-weight processes listed in the array pointed to by .Fa targets . .Pp The target LWPs are assumed to be waiting in the kernel as a result of calls to .Fn _lwp_park . If any of the target LWPs are not currently waiting, those LWPs will return immediately upon the next call to .Fn _lwp_park . .Pp The value pointed to by .Fa ntargets specifies the size of the array pointed to by .Fa targets . If the .Fa targets argument is given as .Dv NULL , the maximum size of the array (expressed as the number of entries) is returned. .Pp See .Xr _lwp_park 2 for a description of the .Fa hint argument. .Sh RETURN VALUES If the maximum size of the .Fa targets array is not being queried, a return of 0 indicates that the call succeeded. A \-1 return value indicates an error occurred and .Va errno is set to indicate the reason. .Sh ERRORS .Bl -tag -width [EINVAL] .It Bq Er EFAULT The value specified for .Fa targets is invalid. .It Bq Er EINVAL The value specified for .Fa ntargets is out of range. .It Bq Er ENOMEM Insufficient resources are available to complete the operation. .El .Sh SEE ALSO .Xr _lwp_park 2 , .Xr _lwp_unpark 2 , .Xr _lwp_wakeup 2 .Sh HISTORY The .Fn _lwp_unpark_all system call first appeared in .Nx 5.0 .