Re: [9fans] APE fork()

[Victor Nazarov <vir@comtv.ru>]

Sascha Retzki wrote:

>Hello list,
>
>/sys/src/ape/lib/ap/plan9/fork.c does an 
>	_RFORK(RFENVG|RFFDG|RFPROC);
>
>Why not RFMEM? Imho on POSIX-fork(), the child shares the address-space with the parents.  
>
>It is not that I really care myself, #include <lib9.h> fixes a lot of things,;) ,but I fear programmes which rely on that may not work. Is there a specific reason fork.c:fork() does not fork with RFMEM?
>
>
>Mfg, Sascha
>  
>
rfork (2):
``RFMEM --- If set, the child and the parent will share data and bss 
segments. Otherwise, the child inherits a copy of those segments. Other 
segment types, in particular stack segments, will be unaffected. May be 
set only with RFPROC.''

POSIX-fork() copies data and bss segmets, child process doesn't share 
data with it's parent. There are POSIX-threads, SYSV-IPC to share memory.
--
Victor