remove buffering

src/server/torr/storage/torrstor/buffer.go

@@ -1,79 +0,0 @@
-package torrstor
-
-import (
-	"fmt"
-	"sync"
-)
-
-type buffer struct {
-	pieceId int
-	buf     []byte
-	used    bool
-}
-
-type BufferPool struct {
-	buffs map[int]*buffer
-	frees int
-	size  int64
-	mu    sync.Mutex
-}
-
-func NewBufferPool(bufferLength int64, capacity int64) *BufferPool {
-	bp := new(BufferPool)
-	buffsSize := int(capacity/bufferLength) + 4
-	bp.frees = buffsSize
-	bp.size = bufferLength
-	return bp
-}
-
-func (b *BufferPool) mkBuffs() {
-	if b.buffs != nil {
-		return
-	}
-	b.buffs = make(map[int]*buffer, b.frees)
-	fmt.Println("Create", b.frees, "buffers")
-	for i := 0; i < b.frees; i++ {
-		buf := buffer{
-			-1,
-			make([]byte, b.size),
-			false,
-		}
-		b.buffs[i] = &buf
-	}
-}
-
-func (b *BufferPool) GetBuffer(p *Piece) (buff []byte, index int) {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-	b.mkBuffs()
-	for id, buf := range b.buffs {
-		if !buf.used {
-			buf.used = true
-			buf.pieceId = p.Id
-			buff = buf.buf
-			index = id
-			b.frees--
-			return
-		}
-	}
-	fmt.Println("Create slow buffer")
-	return make([]byte, b.size), -1
-}
-
-func (b *BufferPool) ReleaseBuffer(index int) {
-	if index == -1 || b == nil {
-		return
-	}
-	b.mu.Lock()
-	defer b.mu.Unlock()
-	b.mkBuffs()
-	if buff, ok := b.buffs[index]; ok {
-		buff.used = false
-		buff.pieceId = -1
-		b.frees++
-	}
-}
-
-func (b *BufferPool) Len() int {
-	return b.frees
-}

src/server/torr/storage/torrstor/cache.go

@@ -25,8 +25,7 @@ type Cache struct {
 	pieceLength int64
 	pieceCount  int
 
-	pieces     map[int]*Piece
-	bufferPull *BufferPool
+	pieces map[int]*Piece
 
 	readers   map[*Reader]struct{}
 	muReaders sync.Mutex
@@ -57,7 +56,6 @@ func (c *Cache) Init(info *metainfo.Info, hash metainfo.Hash) {
 	c.pieceLength = info.PieceLength
 	c.pieceCount = info.NumPieces()
 	c.hash = hash
-	c.bufferPull = NewBufferPool(c.pieceLength, c.capacity)
 
 	for i := 0; i < c.pieceCount; i++ {
 		c.pieces[i] = &Piece{
@@ -86,7 +84,6 @@ func (c *Cache) Close() error {
 		delete(c.storage.caches, c.hash)
 	}
 	c.pieces = nil
-	c.bufferPull = nil
 
 	c.muReaders.Lock()
 	c.readers = nil

src/server/torr/storage/torrstor/piece.go

@@ -22,7 +22,6 @@ type Piece struct {
 	readed   bool
 	accessed int64
 	buffer   []byte
-	bufIndex int
 
 	mu    sync.RWMutex
 	cache *Cache
@@ -34,10 +33,7 @@ func (p *Piece) WriteAt(b []byte, off int64) (n int, err error) {
 
 	if p.buffer == nil {
 		go p.cache.cleanPieces()
-		p.buffer, p.bufIndex = p.cache.bufferPull.GetBuffer(p)
-		if p.buffer == nil {
-			return 0, errors.New("Can't get buffer write")
-		}
+		p.buffer = make([]byte, p.cache.pieceLength)
 	}
 	n = copy(p.buffer[off:], b[:])
 	p.Size += int64(n)
@@ -98,8 +94,6 @@ func (p *Piece) Release() {
 	defer p.mu.Unlock()
 	if p.buffer != nil {
 		p.buffer = nil
-		p.cache.bufferPull.ReleaseBuffer(p.bufIndex)
-		p.bufIndex = -1
 	}
 	p.Size = 0
 	p.complete = false
@@ -110,11 +104,3 @@ func (p *Piece) Release() {
 	pce.UpdateCompletion()
 	pce.SetPriority(torrent.PiecePriorityNone)
 }
-
-func WriteToDisk(b []byte, off int64) (n int, err error) {
-	return 0, nil
-}
-
-func ReadFromDisk(b []byte, off int64) (n int, err error) {
-	return 0, nil
-}