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From: "Eric Smith" <eric@brouhaha.com>
To: linux-kernel@vger.kernel.org
Cc: "Andi Kleen" <andi@firstfloor.org>
Subject: Re: Any lightweight way for one thread to force another thread to   suspend execution?
Date: Sat, 21 Jun 2008 18:55:37 -0700 (PDT)	[thread overview]
Message-ID: <49370.71.139.37.220.1214099737.squirrel@ruckus.brouhaha.com> (raw)
In-Reply-To: <877iciyjcs.fsf@basil.nowhere.org>

Andi wrote:
> Any such mechanism will need a syscall, and it's unlikely that
> any syscall will get much cheaper than a kill(SIGSTOP)

But is there a way for the process sending the SIGSTOP to wait until it
has taken effect?  I need a method to *synchronously* stop another
thread.  That's why I thought I probably needed something more
elaborate than SIGSTOP, though I'd like to minimize the number of
system calls required.

Thanks!
Eric Smith


  reply	other threads:[~2008-06-22  1:55 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-20 23:54 Eric Smith
2008-06-21 14:04 ` Andi Kleen
2008-06-22  1:55   ` Eric Smith [this message]
2008-06-22  6:33     ` Bart Van Assche
2008-06-22  9:14     ` Jan Engelhardt
2008-06-23 21:08   ` Eric Smith
2008-06-24  7:59     ` Mikael Pettersson
2008-06-21 16:38 ` Bart Van Assche
2008-06-22  2:02   ` Eric Smith

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