2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
94 lines
2.8 KiB
Groff
94 lines
2.8 KiB
Groff
.\" $NetBSD: _lwp_wait.2,v 1.4 2008/04/30 13:10:51 martin Exp $
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.\"
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.\" Copyright (c) 2003 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Jason R. Thorpe of Wasabi Systems, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd January 13, 2003
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.Dt _LWP_WAIT 2
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.Os
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.Sh NAME
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.Nm _lwp_wait
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.Nd wait for light-weight process termination
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In lwp.h
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.Ft int
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.Fn _lwp_wait "lwpid_t wlwp" "lwpid_t *rlwp"
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.Sh DESCRIPTION
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.Fn _lwp_wait
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suspends execution of the calling LWP until the LWP specified by
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.Fa wlwp
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terminates.
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The specified LWP must not be detached.
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If
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.Fa wlwp
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is 0, then
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.Fn _lwp_wait
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waits for any undetached LWP in the current process.
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.Pp
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If
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.Fa rlwp
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is not
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.Dv NULL ,
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then it points to the location where the LWP ID of
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the exited LWP is stored.
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.Sh RETURN VALUES
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Upon successful completion,
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.Fn _lwp_wait
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returns a value of 0.
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Otherwise, an error code is returned to indicate the error.
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.Sh ERRORS
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.Fn _lwp_wait
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will fail if:
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.Bl -tag -width [EDEADLK]
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.It Bq Er ESRCH
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No undetached LWP can be found in the current process corresponding to that
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specified by
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.Fa wlwp .
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.It Bq Er EDEADLK
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The calling LWP is the only LWP in the process.
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.It Bq Er EDEADLK
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The LWP ID specified by
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.Fa wlwp
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is the LWP ID of the calling LWP.
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.It Bq Er EINTR
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.Fn _lwp_wait
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was interrupted by a caught signal, or the signal did not
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have the
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.Dv SA_RESTART
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flag set.
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.El
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.Sh SEE ALSO
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.Xr _lwp_create 2 ,
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.Xr _lwp_exit 2
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.Sh HISTORY
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The
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.Fn _lwp_wait
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system call first appeared in
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.Nx 2.0 .
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