From aac259c0fe3a01ebf0938231d1c2226cc0fc8df6 Mon Sep 17 00:00:00 2001
From: Zlatin Balevsky <zlatinb@gmail.com>
Date: Mon, 16 Mar 2020 22:45:16 +0000
Subject: [PATCH] cache the cardinality to speed up UI sorting

---
 core/src/main/groovy/com/muwire/core/download/Pieces.groovy | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/core/src/main/groovy/com/muwire/core/download/Pieces.groovy b/core/src/main/groovy/com/muwire/core/download/Pieces.groovy
index 4d4a9d7e..b0950f05 100644
--- a/core/src/main/groovy/com/muwire/core/download/Pieces.groovy
+++ b/core/src/main/groovy/com/muwire/core/download/Pieces.groovy
@@ -6,6 +6,7 @@ class Pieces {
     private final float ratio
     private final Random random = new Random()
     private final Map<Integer,Integer> partials = new HashMap<>()
+    private int cachedDone;
 
     Pieces(int nPieces) {
         this(nPieces, 1.0f)
@@ -78,6 +79,7 @@ class Pieces {
         if (piece >= nPieces)
             throw new IllegalArgumentException("invalid piece marked as downloaded? $piece/$nPieces")
         done.set(piece)
+        cachedDone = done.cardinality();
         claimed.set(piece)
         partials.remove(piece)
     }
@@ -91,11 +93,11 @@ class Pieces {
     }
 
     synchronized boolean isComplete() {
-        done.cardinality() == nPieces
+        cachedDone == nPieces
     }
 
     synchronized int donePieces() {
-        done.cardinality()
+        cachedDone
     }
 
     synchronized boolean isDownloaded(int piece) {