From: Matt Joiner <anacrolix@gmail.com>
Date: Fri, 1 Aug 2025 05:51:52 +0000 (+1000)
Subject: Avoid Iterator allocation
X-Git-Tag: v1.59.0~2^2~74
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=983775333e9f6b94e9d41d4e35141235fd76f1ec;p=btrtrc.git

Avoid Iterator allocation
---

diff --git a/piece.go b/piece.go
index 113e9345..c95c2fe4 100644
--- a/piece.go
+++ b/piece.go
@@ -7,6 +7,7 @@ import (
 	"iter"
 	"sync"
 
+	"github.com/RoaringBitmap/roaring"
 	"github.com/anacrolix/chansync"
 	g "github.com/anacrolix/generics"
 	"github.com/anacrolix/missinggo/v2/bitmap"
@@ -157,7 +158,8 @@ func (p *Piece) chunkIndexDirty(chunk chunkIndexType) bool {
 
 func (p *Piece) iterCleanChunks() iter.Seq[chunkIndexType] {
 	return func(yield func(chunkIndexType) bool) {
-		it := p.t.dirtyChunks.Iterator()
+		var it roaring.IntIterator
+		it.Initialize(&p.t.dirtyChunks.Bitmap)
 		begin := uint32(p.requestIndexBegin())
 		end := uint32(p.requestIndexMaxEnd())
 		it.AdvanceIfNeeded(begin)