* Does poll handler is in interrupt context ?
@ 2016-12-18 9:24 Ran Shalit
2016-12-18 12:47 ` Tal Shorer
0 siblings, 1 reply; 2+ messages in thread
From: Ran Shalit @ 2016-12-18 9:24 UTC (permalink / raw)
To: kernelnewbies
Hello,
This is something I'm not too sure about, so I rather ask it here:
When the context return to userspace on calling poll, is it done in
interrupt context ?
...
ret = poll(fds, 2, TIMEOUT * 1000);
if (ret == -1) {
perror ("poll");
return 1;
}
if (!ret) {
return 0;
}
if (fds[0].revents & POLLIN)
printf ("POLLIN\n");
if (fds[1].revents & POLLOUT)
printf ("POLLOUT\n");
return 0;
Regards,
Ran
^ permalink raw reply [flat|nested] 2+ messages in thread
* Does poll handler is in interrupt context ?
2016-12-18 9:24 Does poll handler is in interrupt context ? Ran Shalit
@ 2016-12-18 12:47 ` Tal Shorer
0 siblings, 0 replies; 2+ messages in thread
From: Tal Shorer @ 2016-12-18 12:47 UTC (permalink / raw)
To: kernelnewbies
On Sun, Dec 18, 2016 at 11:24 AM, Ran Shalit <ranshalit@gmail.com> wrote:
> Hello,
>
> This is something I'm not too sure about, so I rather ask it here:
> When the context return to userspace on calling poll, is it done in
> interrupt context ?
No. the process will continue running in thread context.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2016-12-18 12:47 ` Tal Shorer
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