From ec38d0d8ab8cc0d810d16d052fbf700b8fc603d8 Mon Sep 17 00:00:00 2001
From: tonihei <tonihei@google.com>
Date: Fri, 8 Sep 2017 07:54:10 -0700
Subject: [PATCH] Check thread is still alive before sending message in Loader.

The release callback handler in Loader might not be alive
anymore. Catch this case to prevent warnings about sending
messages on dead threads.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=167996538
---
 .../java/com/google/android/exoplayer2/upstream/Loader.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/library/core/src/main/java/com/google/android/exoplayer2/upstream/Loader.java b/library/core/src/main/java/com/google/android/exoplayer2/upstream/Loader.java
index 02ccfafa89..02e9a32116 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/upstream/Loader.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/upstream/Loader.java
@@ -420,7 +420,9 @@ public final class Loader implements LoaderErrorThrower {
 
     @Override
     public void run() {
-      sendEmptyMessage(0);
+      if (getLooper().getThread().isAlive()) {
+        sendEmptyMessage(0);
+      }
     }
 
     @Override