From 2e3e658be1b89d23cad4c126d7e84e2ca1177586 Mon Sep 17 00:00:00 2001
From: Ben Noordhuis <info@bnoordhuis.nl>
Date: Wed, 23 May 2012 12:52:42 +0200
Subject: [PATCH] unix: fix uv_poll CPU usage spike
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Saúl Ibarra Corretgé reports that calling uv_poll_start() repeatedly results
in CPU usage spikes. Fixed by stopping the poll I/O watcher before updating it.

Fixes #424.
---
 src/unix/poll.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/unix/poll.c b/src/unix/poll.c
index f0a4344e..13796ab5 100644
--- a/src/unix/poll.c
+++ b/src/unix/poll.c
@@ -100,6 +100,7 @@ int uv_poll_start(uv_poll_t* handle, int pevents, uv_poll_cb poll_cb) {
   if (pevents & UV_WRITABLE)
     events |= UV__IO_WRITE;
 
+  uv__io_stop(handle->loop, &handle->io_watcher);
   uv__io_set(&handle->io_watcher, uv__poll_io, handle->fd, events);
   uv__io_start(handle->loop, &handle->io_watcher);