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authorpeter <peter@FreeBSD.org>2000-07-29 12:12:39 +0000
committerpeter <peter@FreeBSD.org>2000-07-29 12:12:39 +0000
commit16df36990f3116869fa8606fb3df4d2b8be845d6 (patch)
treef8fd33b33d544258ca8cd5ead649daf145cd6ae7 /lib
parentc749b2743d2232cb7447bb86ac98af43645d1b58 (diff)
downloadFreeBSD-src-16df36990f3116869fa8606fb3df4d2b8be845d6.zip
FreeBSD-src-16df36990f3116869fa8606fb3df4d2b8be845d6.tar.gz
Add a skeleton rfork_thread(3) man page.
Diffstat (limited to 'lib')
-rw-r--r--lib/libc/gen/Makefile.inc3
-rw-r--r--lib/libc/gen/rfork_thread.377
2 files changed, 79 insertions, 1 deletions
diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
index 86c67b1..87b415c 100644
--- a/lib/libc/gen/Makefile.inc
+++ b/lib/libc/gen/Makefile.inc
@@ -46,7 +46,8 @@ MAN3+= alarm.3 arc4random.3 clock.3 \
glob.3 initgroups.3 isinf.3 \
ldexp.3 lockf.3 modf.3 msgctl.3 msgget.3 msgrcv.3 msgsnd.3 \
nice.3 nlist.3 pause.3 popen.3 psignal.3 pwcache.3 \
- raise.3 rand48.3 scandir.3 setjmp.3 setmode.3 shm_open.3 \
+ raise.3 rand48.3 rfork_thread.3 \
+ scandir.3 setjmp.3 setmode.3 shm_open.3 \
siginterrupt.3 signal.3 sigsetops.3 sleep.3 stringlist.3 \
strtofflags.3 sysconf.3 sysctl.3 syslog.3 tcgetpgrp.3 \
tcsendbreak.3 tcsetattr.3 tcsetpgrp.3 time.3 times.3 timezone.3 \
diff --git a/lib/libc/gen/rfork_thread.3 b/lib/libc/gen/rfork_thread.3
new file mode 100644
index 0000000..1b2b9f0
--- /dev/null
+++ b/lib/libc/gen/rfork_thread.3
@@ -0,0 +1,77 @@
+.\"
+.\" Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" 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 AUTHOR 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 AUTHOR 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd Jul 29, 2000
+.Dt RFORK_THREAD 3
+.Os
+.Sh NAME
+.Nm rfork_thread
+.Nd create a rfork-based process thread
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn rfork_thread "int flags" "void *stack" "int (*func)(void *arg)" "void *arg"
+.Sh DESCRIPTION
+.Fn rfork_thread 3
+is a helper function for
+.Xr rfork 2 .
+It arranges for a new process to be created and the child process will
+call the specified function with the specified argument, while running on
+the supplied stack.
+.Pp
+Using this function should avoid the need to implement complex stack
+swap code.
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn rfork_thread 3
+returns the process ID of the child process to the parent process.
+Otherwise, a value of -1 is returned
+to the parent process, no child process is created, and the global
+variable
+.Va errno
+is set to indicate the error.
+.Pp
+The child process context is not aware of a return from the
+.Fn rfork_thread 3
+function as it begins executing directly with the supplied function.
+.Sh ERRORS
+See
+.Xr rfork 2
+for error return codes.
+.Sh SEE ALSO
+.Xr fork 2 ,
+.Xr intro 2 ,
+.Xr minherit 2 ,
+.Xr rfork 2 ,
+.Xr vfork 2
+.Sh HISTORY
+The
+.Fn rfork_thread 3
+function call first appeared in
+.Fx 5.0
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