rfork(3) - Plan 9 from User Space

From adc93f6097615f16d57e8a24a256302f2144ec4e Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 17:37:50 +0000 Subject: cut out the html - they're going to cause diffing problems. --- man/man3/rfork.html | 118 ---------------------------------------------------- 1 file changed, 118 deletions(-) delete mode 100644 man/man3/rfork.html (limited to 'man/man3/rfork.html') diff --git a/man/man3/rfork.html b/man/man3/rfork.html deleted file mode 100644 index f76a61fd..00000000 --- a/man/man3/rfork.html +++ /dev/null @@ -1,118 +0,0 @@ - -rfork(3) - Plan 9 from User Space - - - - -

RFORK(3) RFORK(3) -

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NAME
- -
- - rfork – manipulate process state
- -
-

SYNOPSIS
- -
- - #include <u.h> - #include <libc.h> - - - int rfork(int flags) - -
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DESCRIPTION
- -
- - Rfork is a partial implementation of the Plan 9 system call. It - can be used to manipulate some process state and to create new - processes a la fork(2). It cannot be used to create shared-memory - processes (Plan 9’s RFMEM flag); for that functionality use proccreate - (see thread(3)). -
- - The flags argument to rfork selects which resources of the invoking - process (parent) are shared by the new process (child) or initialized - to their default values. Flags is the logical OR of some subset - of
- RFPROC     If set a new process is created; otherwise changes affect - the current process.
- RFNOWAIT   If set, the child process will be dissociated from the - parent. Upon exit the child will leave no Waitmsg (see wait(3)) - for the parent to collect.
- RFNOTEG    Each process is a member of a group of processes that all - receive notes when a note is sent to the group (see postnote(3) - and signal(2)). The group of a new process is by default the same - as its parent, but if RFNOTEG is set (regardless of RFPROC), the - process becomes the first in a new group, isolated - -
- - -
- - from previous processes. In Plan 9, a process can call rfork(RFNOTEG) - and then be sure that it will no longer receive console interrupts - or other notes. Unix job-control shells put each command in its - own process group and then relay notes to the current foreground - command, making the idiom - less useful.
- -
- -
- RFFDG      If set, the invoker’s file descriptor table (see intro()) - is copied; otherwise the two processes share a single table. -
- - File descriptors in a shared file descriptor table are kept open - until either they are explicitly closed or all processes sharing - the table exit. -
- - If RFPROC is set, the value returned in the parent process is - the process id of the child process; the value returned in the - child is zero. Without RFPROC, the return value is zero. Process - ids range from 1 to the maximum integer (int) value. Rfork will - sleep, if necessary, until required process resources are available. - -
- - Calling rfork(RFFDG|RFPROC) is equivalent to calling fork(2).
- -
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SOURCE
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- - /usr/local/plan9/src/lib9/rfork.c - -
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DIAGNOSTICS
- -
- - Rfork sets errstr.
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- -

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