From 0e3845ef88190707c3fbf484a9dae0a0d9f30ac7 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <info@fabiomanganiello.com>
Date: Sun, 28 Feb 2021 20:56:32 +0100
Subject: [PATCH] The vlc _reset_state logic should be wrapped within a lock
 context to make sure that two threads don't try to deallocate the context at
 the same time

---
 platypush/plugins/media/vlc.py | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/platypush/plugins/media/vlc.py b/platypush/plugins/media/vlc.py
index 0c313984fd..08dc033883 100644
--- a/platypush/plugins/media/vlc.py
+++ b/platypush/plugins/media/vlc.py
@@ -51,6 +51,7 @@ class MediaVlcPlugin(MediaPlugin):
         self._filename = None
         self._monitor_thread: Optional[threading.Thread] = None
         self._on_stop_event = threading.Event()
+        self._stop_lock = threading.RLock()
 
     @classmethod
     def _watched_event_types(cls):
@@ -93,20 +94,21 @@ class MediaVlcPlugin(MediaPlugin):
         self._reset_state()
 
     def _reset_state(self):
-        self._latest_seek = None
-        self._title = None
-        self._filename = None
-        self._on_stop_event.clear()
+        with self._stop_lock:
+            self._latest_seek = None
+            self._title = None
+            self._filename = None
+            self._on_stop_event.clear()
 
-        if self._player:
-            self.logger.info('Releasing VLC player resource')
-            self._player.release()
-            self._player = None
+            if self._player:
+                self.logger.info('Releasing VLC player resource')
+                self._player.release()
+                self._player = None
 
-        if self._instance:
-            self.logger.info('Releasing VLC instance resource')
-            self._instance.release()
-            self._instance = None
+            if self._instance:
+                self.logger.info('Releasing VLC instance resource')
+                self._instance.release()
+                self._instance = None
 
     @staticmethod
     def _post_event(evt_type, **evt):