prevent multiple creation of cpu usage thread

2020-12-31 23:18:01 +01:00 · 2020-12-31 23:18:01 +01:00 · a1cbc45b88
parent 90f319ebda
commit a1cbc45b88
1 changed files with 4 additions and 2 deletions
--- a/owrx/cpu.py
+++ b/owrx/cpu.py
@ -7,11 +7,13 @@ logger = logging.getLogger(__name__)

 class CpuUsageThread(threading.Thread):
    sharedInstance = None
+    creationLock = threading.Lock()

    @staticmethod
    def getSharedInstance():
-        if CpuUsageThread.sharedInstance is None:
-            CpuUsageThread.sharedInstance = CpuUsageThread()
+        with CpuUsageThread.creationLock:
+            if CpuUsageThread.sharedInstance is None:
+                CpuUsageThread.sharedInstance = CpuUsageThread()
        return CpuUsageThread.sharedInstance

    def __init__(self):