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.\" Copyright (C) 2001 Andries Brouwer (aeb@cwi.nl)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Japanese Version Copyright (c) 2001 NAKANO Takeo all rights reserved.
.\" Translated Sat Dec 15 2001 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\"
.TH MAKECONTEXT 2 2001-11-15 "Linux 2.4" "Linux Programmer's Manual"
.SH ̾
makecontext, swapcontext \- 桼ƥȤ
.SH
.B #include <ucontext.h>
.sp
.BI "void makecontext(ucontext_t *" ucp ", void *" func "(),
.BI "int " argc ", ...);"
.br
.BI "int swapcontext (ucontext_t *" oucp ", ucontext_t *" ucp );
.SH
SysV ŪʴĶǤϡ
\fBmcontext_t\fP \fBucontext_t\fP Ȥ 2 Ĥηȡ
\fBgetcontext()\fP, \fBsetcontext()\fP,
\fBmakecontext()\fP, \fBswapcontext()\fP
Ȥ 4 Ĥδؿ
.I <ucontext.h>
Ƥꡢץ沼ˤʣΥåɴ֤ǡ
桼٥ΥƥؤǤ褦ˤʤäƤ롣
.LP
ηȡǽ 2 ĤδؿˤĤƤϡ
.BR getcontext (2)
ȤΤȡ
.LP
\fBmakecontext()\fP ؿϡݥ \fIucp\fP ؤƥȤѹ
(\fIucp\fP ϰ \fBgetcontext()\fP ƤӽФ줿ΤǤ)
\fBmakecontext()\fP Ƥˤϡ
\fIucp->uc_stack\fP ˳Ƥ뤳ΥƥѤ
åƤʤФʤ餺
ޤ \fIucp->uc_link\fP ˳Ƥ
ѤΥƥȤʤФʤʤ
ΥƥȤ
(\fBsetcontext()\fP ޤ \fBswapcontext()\fP ˤä)
ͭˤȡǽδؿ \fIfunc\fP ƤФ졢
ˤ \fIargc\fP ʹߤΤΤͿ
(\fIargc\fP ˤϤΰθĿ)
ˤδؿ֤ȡ
ѤΥƥȤͭˤʤ롣
ѥƥȤΥݥ NULL ǤȡåɤϽλ롣
.LP
\fBswapcontext()\fP ؿϸߤΥƥȤ
ݥ \fIoucp\fP ؤ¤Τ¸
ݥ \fIucp\fP ؤƥȤͭˤ롣
.SH ֤
ȡ\fBmakecontext()\fP 0 ֤
\fBswapcontext()\fP ֤ʤ
( \fIoucp\fP ͭˤʤäˤ֤뤳Ȥ롣
ΤȤˤ \fBswapcontext()\fP 0 ֤褦˸롣)
ԤȡξԤȤ \-1 ֤\fIerrno\fP 顼˱ꤹ롣
.SH 顼
.TP
.B ENOMEM
å˳Ƥ֤ĤäƤʤ
.SH
\fIucp->uc_stack\fP β
.BR sigaltstack (2)
ξƱǤ롣
ʤι¤Τˤϡ
åȤѤΰγϥɥ쥹Ĺޤޤ졢
ϥåӤɤǤ뤫ˤϴطʤ
äơ桼ץϤηˤĤƤϿۤʤƤ褤
.SH
SUSv2, POSIX 1003.1-2001.
.SH Ϣ
.BR getcontext (2),
.BR sigaction (2),
.BR sigaltstack (2),
.BR sigprocmask (2),
.BR sigsetjmp (3)
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