From 2b5784f2657e0e7b8ddf2ce5563581e6ac21ab75 Mon Sep 17 00:00:00 2001
From: Niki Roo <niki@nikiroo.be>
Date: Fri, 1 May 2020 13:17:39 +0200
Subject: [PATCH] CacheLib: better lock

---
 library/CacheLibrary.java | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/library/CacheLibrary.java b/library/CacheLibrary.java
index 92e4ae7..a3c3b5e 100644
--- a/library/CacheLibrary.java
+++ b/library/CacheLibrary.java
@@ -67,6 +67,7 @@ public class CacheLibrary extends BasicLibrary {
 			pg = new Progress();
 		}
 
+		List<MetaData> copy;
 		synchronized (metasLock) {
 			// We make sure that cached metas have precedence
 			if (metasMixed == null) {
@@ -86,10 +87,12 @@ public class CacheLibrary extends BasicLibrary {
 					}
 				}
 			}
+
+			copy = new ArrayList<MetaData>(metasMixed);
 		}
 
 		pg.done();
-		return new ArrayList<MetaData>(metasMixed);
+		return copy;
 	}
 
 	@Override
@@ -404,9 +407,7 @@ public class CacheLibrary extends BasicLibrary {
 
 		MetaData meta = lib.imprt(url, pgImprt);
 		updateMetaCache(metasReal, meta);
-		synchronized (metasLock) {
-			metasMixed = null;
-		}
+		metasMixed = null;
 
 		clearFromCache(meta.getLuid());
 
-- 
2.27.0