Messages in this thread | | | Date | Tue, 7 Sep 1999 17:31:47 +0100 (GMT) | From | Matthew Kirkwood <> | Subject | Re: clone() and CLONE_PID |
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On Tue, 7 Sep 1999, Lorenzo Allegrucci wrote:
> This is from the LinuxThreads README file:
> One thing that they do not share > is their pid's and parent pid's. According to the standard, they > should have the same, but that's one thing we cannot achieve > in this implementation (until the CLONE_PID flag to clone() becomes > usable). > > When does the CLONE_PID flag to clone() becomes usable? 2.4.x? 2.5.x?
2.3 has the facility to share parent process ids. (With a suitably patched libpthread, this can shave a _lot_ of time for thread creation and destruction.)
Does the pthread standard really require the pid sharing semantics? That will break quite a bit of the kernel, and an awful lot of userspace.
Matthew.
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