From 72f92a1c2b7cff97e388b89617c5e9918729eb44 Mon Sep 17 00:00:00 2001
From: Jakob Ketterl <jakob.ketterl@gmx.de>
Date: Mon, 23 Sep 2019 03:06:51 +0200
Subject: [PATCH] use events instead of simple sleep for clean shutdown

---
 owrx/source.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/owrx/source.py b/owrx/source.py
index 2c475ec..428955c 100644
--- a/owrx/source.py
+++ b/owrx/source.py
@@ -642,6 +642,7 @@ class CpuUsageThread(threading.Thread):
         self.doRun = True
         self.last_worktime = 0
         self.last_idletime = 0
+        self.endEvent = threading.Event()
         super().__init__()
 
     def run(self):
@@ -652,7 +653,7 @@ class CpuUsageThread(threading.Thread):
                 cpu_usage = 0
             for c in self.clients:
                 c.write_cpu_usage(cpu_usage)
-            time.sleep(3)
+            self.endEvent.wait(timeout=3)
         logger.debug("cpu usage thread shut down")
 
     def get_cpu_usage(self):
@@ -692,6 +693,7 @@ class CpuUsageThread(threading.Thread):
     def shutdown(self):
         CpuUsageThread.sharedInstance = None
         self.doRun = False
+        self.endEvent.set()
 
 
 class TooManyClientsException(Exception):