On Sun, 27 Apr 2003, Mark Grosberg wrote:
> Is there any interest in a single system call that will perform both a
> fork() and exec()? Could this save some extra work of doing a
> copy_mm(), copy_signals(), etc?
How about doing vfork() right (fixing the "what if execve(2) fails"
race) instead?
> I know almost all of my fork()-exec() code does almost the same thing. I
> guess vfork() was a potential solution, but this somehow seems cleaner
> (and still may be more efficient than having to issue two syscalls)...
> the downside is, of course, another syscall.
Which is a major showstopper, because it'd only be useful to
non-portable, Unix-specific applications (thus it wouldn't be put to
much use). OTOH, copy-on-write pages will eliminate much of the overhead
already.
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This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:29 EST