Messages in this thread |  | | Date | Sat, 2 Sep 2000 03:21:24 +0200 | From | "Andi Kleen" <> | Subject | Re: thread group comments |
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On Fri, Sep 01, 2000 at 06:15:52PM -0700, Linus Torvalds wrote: > > if (!has_done_this_before) { > pid_t tid; > has_done_this_before = 1; > tid = clone(CLONE_PID);
I'm not sure this will work very well (2.4.0test8-pre1):
int do_fork(unsigned long clone_flags, unsigned long usp, struct pt_regs *regs) { int retval = -ENOMEM; struct task_struct *p; DECLARE_MUTEX_LOCKED(sem);
if (clone_flags & CLONE_PID) { /* This is only allowed from the boot up thread */ if (current->pid) return -EPERM; }
So it would require fixing CLONE_PID first, which is probably nasty.
Without it it'll still require the context switches when you're calling pthread_create from the "original" thread.
-Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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