X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=misc.go;h=7d3007ecee74eb92f58eee434dfb9431a86f9098;hb=HEAD;hp=b49ff7f431a8b7d48a8f5f123d652bdc45d9f92d;hpb=dff436f102060d84f8cc5b433c94bac8985589b4;p=btrtrc.git

diff --git a/misc.go b/misc.go
index b49ff7f4..7d3007ec 100644
--- a/misc.go
+++ b/misc.go
@@ -4,36 +4,36 @@ import (
 	"errors"
 	"net"
 
+	"github.com/RoaringBitmap/roaring"
 	"github.com/anacrolix/missinggo/v2"
 	"golang.org/x/time/rate"
 
 	"github.com/anacrolix/torrent/metainfo"
 	pp "github.com/anacrolix/torrent/peer_protocol"
+	"github.com/anacrolix/torrent/types"
+	"github.com/anacrolix/torrent/types/infohash"
 )
 
-type chunkSpec struct {
-	Begin, Length pp.Integer
-}
-
-type request struct {
-	Index pp.Integer
-	chunkSpec
-}
+type (
+	Request       = types.Request
+	ChunkSpec     = types.ChunkSpec
+	piecePriority = types.PiecePriority
+)
 
-func (r request) ToMsg(mt pp.MessageType) pp.Message {
-	return pp.Message{
-		Type:   mt,
-		Index:  r.Index,
-		Begin:  r.Begin,
-		Length: r.Length,
-	}
-}
+const (
+	PiecePriorityNormal    = types.PiecePriorityNormal
+	PiecePriorityNone      = types.PiecePriorityNone
+	PiecePriorityNow       = types.PiecePriorityNow
+	PiecePriorityReadahead = types.PiecePriorityReadahead
+	PiecePriorityNext      = types.PiecePriorityNext
+	PiecePriorityHigh      = types.PiecePriorityHigh
+)
 
-func newRequest(index, begin, length pp.Integer) request {
-	return request{index, chunkSpec{begin, length}}
+func newRequest(index, begin, length pp.Integer) Request {
+	return Request{index, ChunkSpec{begin, length}}
 }
 
-func newRequestFromMessage(msg *pp.Message) request {
+func newRequestFromMessage(msg *pp.Message) Request {
 	switch msg.Type {
 	case pp.Request, pp.Cancel, pp.Reject:
 		return newRequest(msg.Index, msg.Begin, msg.Length)
@@ -45,7 +45,7 @@ func newRequestFromMessage(msg *pp.Message) request {
 }
 
 // The size in bytes of a metadata extension piece.
-func metadataPieceSize(totalSize int, piece int) int {
+func metadataPieceSize(totalSize, piece int) int {
 	ret := totalSize - piece*(1<<14)
 	if ret > 1<<14 {
 		ret = 1 << 14
@@ -54,8 +54,11 @@ func metadataPieceSize(totalSize int, piece int) int {
 }
 
 // Return the request that would include the given offset into the torrent data.
-func torrentOffsetRequest(torrentLength, pieceSize, chunkSize, offset int64) (
-	r request, ok bool) {
+func torrentOffsetRequest(
+	torrentLength, pieceSize, chunkSize, offset int64,
+) (
+	r Request, ok bool,
+) {
 	if offset < 0 || offset >= torrentLength {
 		return
 	}
@@ -74,10 +77,10 @@ func torrentOffsetRequest(torrentLength, pieceSize, chunkSize, offset int64) (
 	return
 }
 
-func torrentRequestOffset(torrentLength, pieceSize int64, r request) (off int64) {
+func torrentRequestOffset(torrentLength, pieceSize int64, r Request) (off int64) {
 	off = int64(r.Index)*pieceSize + int64(r.Begin)
 	if off < 0 || off >= torrentLength {
-		panic("invalid request")
+		panic("invalid Request")
 	}
 	return
 }
@@ -98,21 +101,22 @@ func validateInfo(info *metainfo.Info) error {
 	return nil
 }
 
-func chunkIndexSpec(index pp.Integer, pieceLength, chunkSize pp.Integer) chunkSpec {
-	ret := chunkSpec{pp.Integer(index) * chunkSize, chunkSize}
+func chunkIndexSpec(index, pieceLength, chunkSize pp.Integer) ChunkSpec {
+	ret := ChunkSpec{pp.Integer(index) * chunkSize, chunkSize}
 	if ret.Begin+ret.Length > pieceLength {
 		ret.Length = pieceLength - ret.Begin
 	}
 	return ret
 }
 
-func connLessTrusted(l, r *PeerConn) bool {
+func connLessTrusted(l, r *Peer) bool {
 	return l.trust().Less(r.trust())
 }
 
 func connIsIpv6(nc interface {
 	LocalAddr() net.Addr
-}) bool {
+},
+) bool {
 	ra := nc.LocalAddr()
 	rip := addrIpOrNil(ra)
 	return rip.To4() == nil && rip.To16() != nil
@@ -141,6 +145,16 @@ func max(as ...int64) int64 {
 	return ret
 }
 
+func maxInt(as ...int) int {
+	ret := as[0]
+	for _, a := range as[1:] {
+		if a > ret {
+			ret = a
+		}
+	}
+	return ret
+}
+
 func min(as ...int64) int64 {
 	ret := as[0]
 	for _, a := range as[1:] {
@@ -151,10 +165,30 @@ func min(as ...int64) int64 {
 	return ret
 }
 
+func minInt(as ...int) int {
+	ret := as[0]
+	for _, a := range as[1:] {
+		if a < ret {
+			ret = a
+		}
+	}
+	return ret
+}
+
 var unlimited = rate.NewLimiter(rate.Inf, 0)
 
 type (
 	pieceIndex = int
-	InfoHash   = metainfo.Hash
-	IpPort     = missinggo.IpPort
+	// Deprecated: Use infohash.T directly to avoid unnecessary imports.
+	InfoHash = infohash.T
+	IpPort   = missinggo.IpPort
 )
+
+func boolSliceToBitmap(slice []bool) (rb roaring.Bitmap) {
+	for i, b := range slice {
+		if b {
+			rb.AddInt(i)
+		}
+	}
+	return
+}