From 3f6df176d9d4e1824ddb5b14d080cc2b78a34777 Mon Sep 17 00:00:00 2001
From: pca006132 <john.lck40@gmail.com>
Date: Mon, 15 Feb 2021 14:59:01 +0800
Subject: [PATCH] Optimize check_signals

---
 vm/src/stdlib/signal.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/vm/src/stdlib/signal.rs b/vm/src/stdlib/signal.rs
index 7d65ea7b8..9fce815c4 100644
--- a/vm/src/stdlib/signal.rs
+++ b/vm/src/stdlib/signal.rs
@@ -111,9 +111,10 @@ pub fn check_signals(vm: &VirtualMachine) -> PyResult<()> {
         None => return Ok(()),
     };
 
-    if !ANY_TRIGGERED.swap(false, Ordering::Relaxed) {
+    if !ANY_TRIGGERED.load(Ordering::Relaxed) {
         return Ok(());
     }
+    ANY_TRIGGERED.store(false, Ordering::Relaxed);
 
     trigger_signals(&signal_handlers.borrow(), vm)
 }