From: Philippe Anel <xigh@bouyapop.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] 9vx, kproc and *double sleep*
Date: Sat, 12 Jun 2010 11:22:46 +0200 [thread overview]
Message-ID: <4C1351E6.8050109@bouyapop.org> (raw)
In-Reply-To: <4C13311B.4050704@bouyapop.org>
9fans,
FYI, I've wondered if they had the same problem in go runtime because
I suspected the code to be quite similar. And I think go team fixed the
problem in ready() equivalent in go runtime, by adding a flag in Proc
equivalent so the proc (G in go) is put back to the run queue ...
Phil;
In go/src/pkg/runtime/proc.c:
>---------------------------------------------------------------------<
// Mark g ready to run. Sched is already locked. G might be running
// already and about to stop. The sched lock protects g->status from
// changing underfoot.
static void
readylocked(G *g)
{
if(g->m){
// Running on another machine.
// Ready it when it stops.
g->readyonstop = 1;
return;
}
...
>---------------------------------------------------------------------<
// Scheduler loop: find g to run, run it, repeat.
static void
scheduler(void)
{
lock(&sched);
...
if(gp->readyonstop){
gp->readyonstop = 0;
readylocked(gp);
}
...
next prev parent reply other threads:[~2010-06-12 9:22 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-11 14:06 Philippe Anel
2010-06-11 14:40 ` ron minnich
2010-06-11 14:49 ` erik quanstrom
2010-06-11 14:54 ` Philippe Anel
2010-06-11 15:03 ` erik quanstrom
2010-06-11 15:22 ` Philippe Anel
2010-06-11 15:25 ` Philippe Anel
2010-06-11 14:59 ` Philippe Anel
2010-06-11 17:11 ` Bakul Shah
2010-06-11 17:31 ` Philippe Anel
2010-06-11 18:34 ` Bakul Shah
2010-06-11 18:36 ` erik quanstrom
2010-06-11 18:51 ` Philippe Anel
2010-06-12 7:02 ` Philippe Anel
2010-06-12 9:22 ` Philippe Anel [this message]
2010-06-12 11:51 ` erik quanstrom
2010-06-13 13:01 ` Richard Miller
2010-06-13 13:43 ` Philippe Anel
2010-06-13 14:26 ` Philippe Anel
2010-06-13 16:20 ` ron minnich
2010-06-13 16:34 ` Philippe Anel
2010-06-13 17:23 ` Philippe Anel
2010-06-13 18:03 ` Philippe Anel
2010-06-14 19:15 ` Charles Forsyth
2010-06-14 19:36 ` Philippe Anel
2010-06-15 2:57 ` ron minnich
2010-06-15 3:36 ` ron minnich
2010-06-12 20:15 ` Richard Miller
2010-06-12 20:30 ` ron minnich
2010-06-12 22:15 ` Charles Forsyth
2010-06-13 0:04 ` ron minnich
2010-06-13 13:32 ` erik quanstrom
2010-06-13 22:34 ` Charles Forsyth
2010-06-13 9:00 ` Richard Miller
2010-06-11 14:49 ` Philippe Anel
2010-06-11 14:59 ` ron minnich
2010-06-11 15:02 ` ron minnich
2010-06-11 15:04 ` erik quanstrom
2010-06-11 15:43 ` ron minnich
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