From 5c7c876a71bb15a2176b555d9d88621e26e9ab99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Wed, 4 Sep 2019 16:37:21 +0200
Subject: perf: less aggresive dyn import polling (#2858)

---
 core/isolate.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'core/isolate.rs')

diff --git a/core/isolate.rs b/core/isolate.rs
index a5e659c9a..bad79b579 100644
--- a/core/isolate.rs
+++ b/core/isolate.rs
@@ -645,7 +645,9 @@ impl Future for Isolate {
 
     loop {
       // If there are any pending dyn_import futures, do those first.
-      self.poll_dyn_imports()?;
+      if !self.pending_dyn_imports.is_empty() {
+        self.poll_dyn_imports()?;
+      }
 
       // Now handle actual ops.
       self.have_unpolled_ops = false;
-- 
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