From: David Goulet <dgoulet@efficios.com>
Date: Thu, 29 Aug 2013 14:38:12 +0000 (-0400)
Subject: Fix: remove bad check after epoll wait in consumer
X-Git-Tag: v2.2.4~4
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=8d6144b81e91ea600cf04d9e8270069c7c5006fb;p=lttng-tools.git

Fix: remove bad check after epoll wait in consumer

The returned nb_fd value is the number of FD ready for the requested I/O
so having and revents set to 0 is possible since not all fd are ready
thus making this check irrelevant and actually ressource consuming.

Signed-off-by: David Goulet <dgoulet@efficios.com>
---

diff --git a/src/common/consumer.c b/src/common/consumer.c
index 786a1db7b..256c57a73 100644
--- a/src/common/consumer.c
+++ b/src/common/consumer.c
@@ -2231,11 +2231,6 @@ restart:
 			revents = LTTNG_POLL_GETEV(&events, i);
 			pollfd = LTTNG_POLL_GETFD(&events, i);
 
-			/* Just don't waste time if no returned events for the fd */
-			if (!revents) {
-				continue;
-			}
-
 			if (pollfd == lttng_pipe_get_readfd(ctx->consumer_metadata_pipe)) {
 				if (revents & (LPOLLERR | LPOLLHUP )) {
 					DBG("Metadata thread pipe hung up");