From: Zac Medico <zmedico@gentoo.org>
Date: Fri, 17 Feb 2012 06:29:17 +0000 (-0800)
Subject: EventLoop.iteration: poll for blocking, not sleep
X-Git-Tag: v2.2.0_alpha87~16
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=8dd6814bd387ddfba484bf22c429103b885a58c6;p=portage.git

EventLoop.iteration: poll for blocking, not sleep

The effect is be mostly the same, but it's more conistent to use
_do_poll for all blocking, plus it has EINTR handling.
---

diff --git a/pym/portage/util/_eventloop/EventLoop.py b/pym/portage/util/_eventloop/EventLoop.py
index 7f171fb8c..37a971e40 100644
--- a/pym/portage/util/_eventloop/EventLoop.py
+++ b/pym/portage/util/_eventloop/EventLoop.py
@@ -176,11 +176,14 @@ class EventLoop(object):
 			if not event_handlers:
 				if not events_handled and may_block and \
 					self._timeout_interval is not None:
-					# Sleep so that we don't waste cpu time by looping too
+					# Block so that we don't waste cpu time by looping too
 					# quickly. This makes EventLoop useful for code that needs
 					# to wait for timeout callbacks regardless of whether or
 					# not any IO handlers are currently registered.
-					time.sleep(self._timeout_interval/1000)
+					try:
+						self._do_poll(timeout=self._timeout_interval)
+					except StopIteration:
+						pass
 					if self._run_timeouts():
 						events_handled += 1
 					if not event_handlers: