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-rw-r--r--plumbing/format/packfile/common.go18
-rw-r--r--plumbing/format/packfile/diff_delta.go21
-rw-r--r--plumbing/format/packfile/packfile.go34
-rw-r--r--plumbing/format/packfile/parser.go19
-rw-r--r--plumbing/format/packfile/patch_delta.go18
-rw-r--r--plumbing/format/packfile/scanner.go54
6 files changed, 66 insertions, 98 deletions
diff --git a/plumbing/format/packfile/common.go b/plumbing/format/packfile/common.go
index df423ad..36c5ef5 100644
--- a/plumbing/format/packfile/common.go
+++ b/plumbing/format/packfile/common.go
@@ -1,10 +1,7 @@
package packfile
import (
- "bytes"
- "compress/zlib"
"io"
- "sync"
"github.com/go-git/go-git/v5/plumbing/storer"
"github.com/go-git/go-git/v5/utils/ioutil"
@@ -61,18 +58,3 @@ func WritePackfileToObjectStorage(
return err
}
-
-var bufPool = sync.Pool{
- New: func() interface{} {
- return bytes.NewBuffer(nil)
- },
-}
-
-var zlibInitBytes = []byte{0x78, 0x9c, 0x01, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01}
-
-var zlibReaderPool = sync.Pool{
- New: func() interface{} {
- r, _ := zlib.NewReader(bytes.NewReader(zlibInitBytes))
- return r
- },
-}
diff --git a/plumbing/format/packfile/diff_delta.go b/plumbing/format/packfile/diff_delta.go
index 1951b34..2c7a335 100644
--- a/plumbing/format/packfile/diff_delta.go
+++ b/plumbing/format/packfile/diff_delta.go
@@ -5,6 +5,7 @@ import (
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/utils/ioutil"
+ "github.com/go-git/go-git/v5/utils/sync"
)
// See https://github.com/jelmer/dulwich/blob/master/dulwich/pack.py and
@@ -43,18 +44,16 @@ func getDelta(index *deltaIndex, base, target plumbing.EncodedObject) (o plumbin
defer ioutil.CheckClose(tr, &err)
- bb := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(bb)
- bb.Reset()
+ bb := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(bb)
_, err = bb.ReadFrom(br)
if err != nil {
return nil, err
}
- tb := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(tb)
- tb.Reset()
+ tb := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(tb)
_, err = tb.ReadFrom(tr)
if err != nil {
@@ -80,9 +79,8 @@ func DiffDelta(src, tgt []byte) []byte {
}
func diffDelta(index *deltaIndex, src []byte, tgt []byte) []byte {
- buf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(buf)
- buf.Reset()
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
buf.Write(deltaEncodeSize(len(src)))
buf.Write(deltaEncodeSize(len(tgt)))
@@ -90,9 +88,8 @@ func diffDelta(index *deltaIndex, src []byte, tgt []byte) []byte {
index.init(src)
}
- ibuf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(ibuf)
- ibuf.Reset()
+ ibuf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(ibuf)
for i := 0; i < len(tgt); i++ {
offset, l := index.findMatch(src, tgt, i)
diff --git a/plumbing/format/packfile/packfile.go b/plumbing/format/packfile/packfile.go
index 8dd6041..6852702 100644
--- a/plumbing/format/packfile/packfile.go
+++ b/plumbing/format/packfile/packfile.go
@@ -2,7 +2,6 @@ package packfile
import (
"bytes"
- "compress/zlib"
"fmt"
"io"
"os"
@@ -13,6 +12,7 @@ import (
"github.com/go-git/go-git/v5/plumbing/format/idxfile"
"github.com/go-git/go-git/v5/plumbing/storer"
"github.com/go-git/go-git/v5/utils/ioutil"
+ "github.com/go-git/go-git/v5/utils/sync"
)
var (
@@ -138,9 +138,8 @@ func (p *Packfile) getObjectSize(h *ObjectHeader) (int64, error) {
case plumbing.CommitObject, plumbing.TreeObject, plumbing.BlobObject, plumbing.TagObject:
return h.Length, nil
case plumbing.REFDeltaObject, plumbing.OFSDeltaObject:
- buf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(buf)
- buf.Reset()
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
if _, _, err := p.s.NextObject(buf); err != nil {
return 0, err
@@ -227,9 +226,9 @@ func (p *Packfile) getNextObject(h *ObjectHeader, hash plumbing.Hash) (plumbing.
// For delta objects we read the delta data and apply the small object
// optimization only if the expanded version of the object still meets
// the small object threshold condition.
- buf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(buf)
- buf.Reset()
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
+
if _, _, err := p.s.NextObject(buf); err != nil {
return nil, err
}
@@ -290,14 +289,13 @@ func (p *Packfile) getObjectContent(offset int64) (io.ReadCloser, error) {
func asyncReader(p *Packfile) (io.ReadCloser, error) {
reader := ioutil.NewReaderUsingReaderAt(p.file, p.s.r.offset)
- zr := zlibReaderPool.Get().(io.ReadCloser)
-
- if err := zr.(zlib.Resetter).Reset(reader, nil); err != nil {
+ zr, err := sync.GetZlibReader(reader)
+ if err != nil {
return nil, fmt.Errorf("zlib reset error: %s", err)
}
- return ioutil.NewReadCloserWithCloser(zr, func() error {
- zlibReaderPool.Put(zr)
+ return ioutil.NewReadCloserWithCloser(zr.Reader, func() error {
+ sync.PutZlibReader(zr)
return nil
}), nil
@@ -373,9 +371,9 @@ func (p *Packfile) fillRegularObjectContent(obj plumbing.EncodedObject) (err err
}
func (p *Packfile) fillREFDeltaObjectContent(obj plumbing.EncodedObject, ref plumbing.Hash) error {
- buf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(buf)
- buf.Reset()
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
+
_, _, err := p.s.NextObject(buf)
if err != nil {
return err
@@ -417,9 +415,9 @@ func (p *Packfile) fillREFDeltaObjectContentWithBuffer(obj plumbing.EncodedObjec
}
func (p *Packfile) fillOFSDeltaObjectContent(obj plumbing.EncodedObject, offset int64) error {
- buf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(buf)
- buf.Reset()
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
+
_, _, err := p.s.NextObject(buf)
if err != nil {
return err
diff --git a/plumbing/format/packfile/parser.go b/plumbing/format/packfile/parser.go
index 9ec838e..522c146 100644
--- a/plumbing/format/packfile/parser.go
+++ b/plumbing/format/packfile/parser.go
@@ -10,6 +10,7 @@ import (
"github.com/go-git/go-git/v5/plumbing/cache"
"github.com/go-git/go-git/v5/plumbing/storer"
"github.com/go-git/go-git/v5/utils/ioutil"
+ "github.com/go-git/go-git/v5/utils/sync"
)
var (
@@ -175,7 +176,8 @@ func (p *Parser) init() error {
}
func (p *Parser) indexObjects() error {
- buf := new(bytes.Buffer)
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
for i := uint32(0); i < p.count; i++ {
buf.Reset()
@@ -219,6 +221,7 @@ func (p *Parser) indexObjects() error {
ota = newBaseObject(oh.Offset, oh.Length, t)
}
+ buf.Grow(int(oh.Length))
_, crc, err := p.scanner.NextObject(buf)
if err != nil {
return err
@@ -264,7 +267,9 @@ func (p *Parser) indexObjects() error {
}
func (p *Parser) resolveDeltas() error {
- buf := &bytes.Buffer{}
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
+
for _, obj := range p.oi {
buf.Reset()
err := p.get(obj, buf)
@@ -346,9 +351,8 @@ func (p *Parser) get(o *objectInfo, buf *bytes.Buffer) (err error) {
}
if o.DiskType.IsDelta() {
- b := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(b)
- b.Reset()
+ b := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(b)
err := p.get(o.Parent, b)
if err != nil {
return err
@@ -382,9 +386,8 @@ func (p *Parser) resolveObject(
if !o.DiskType.IsDelta() {
return nil
}
- buf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(buf)
- buf.Reset()
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
err := p.readData(buf, o)
if err != nil {
return err
diff --git a/plumbing/format/packfile/patch_delta.go b/plumbing/format/packfile/patch_delta.go
index 053466d..f00562d 100644
--- a/plumbing/format/packfile/patch_delta.go
+++ b/plumbing/format/packfile/patch_delta.go
@@ -9,6 +9,7 @@ import (
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/utils/ioutil"
+ "github.com/go-git/go-git/v5/utils/sync"
)
// See https://github.com/git/git/blob/49fa3dc76179e04b0833542fa52d0f287a4955ac/delta.h
@@ -34,18 +35,16 @@ func ApplyDelta(target, base plumbing.EncodedObject, delta []byte) (err error) {
defer ioutil.CheckClose(w, &err)
- buf := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(buf)
- buf.Reset()
+ buf := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(buf)
_, err = buf.ReadFrom(r)
if err != nil {
return err
}
src := buf.Bytes()
- dst := bufPool.Get().(*bytes.Buffer)
- defer bufPool.Put(dst)
- dst.Reset()
+ dst := sync.GetBytesBuffer()
+ defer sync.PutBytesBuffer(dst)
err = patchDelta(dst, src, delta)
if err != nil {
return err
@@ -53,10 +52,9 @@ func ApplyDelta(target, base plumbing.EncodedObject, delta []byte) (err error) {
target.SetSize(int64(dst.Len()))
- bufp := byteSlicePool.Get().(*[]byte)
- b := *bufp
- _, err = io.CopyBuffer(w, dst, b)
- byteSlicePool.Put(bufp)
+ b := sync.GetByteSlice()
+ _, err = io.CopyBuffer(w, dst, *b)
+ sync.PutByteSlice(b)
return err
}
diff --git a/plumbing/format/packfile/scanner.go b/plumbing/format/packfile/scanner.go
index b655594..9ebb84a 100644
--- a/plumbing/format/packfile/scanner.go
+++ b/plumbing/format/packfile/scanner.go
@@ -3,17 +3,16 @@ package packfile
import (
"bufio"
"bytes"
- "compress/zlib"
"fmt"
"hash"
"hash/crc32"
"io"
stdioutil "io/ioutil"
- "sync"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/utils/binary"
"github.com/go-git/go-git/v5/utils/ioutil"
+ "github.com/go-git/go-git/v5/utils/sync"
)
var (
@@ -323,14 +322,14 @@ func (s *Scanner) NextObject(w io.Writer) (written int64, crc32 uint32, err erro
// ReadObject returns a reader for the object content and an error
func (s *Scanner) ReadObject() (io.ReadCloser, error) {
s.pendingObject = nil
- zr := zlibReaderPool.Get().(io.ReadCloser)
+ zr, err := sync.GetZlibReader(s.r)
- if err := zr.(zlib.Resetter).Reset(s.r, nil); err != nil {
+ if err != nil {
return nil, fmt.Errorf("zlib reset error: %s", err)
}
- return ioutil.NewReadCloserWithCloser(zr, func() error {
- zlibReaderPool.Put(zr)
+ return ioutil.NewReadCloserWithCloser(zr.Reader, func() error {
+ sync.PutZlibReader(zr)
return nil
}), nil
}
@@ -338,28 +337,20 @@ func (s *Scanner) ReadObject() (io.ReadCloser, error) {
// ReadRegularObject reads and write a non-deltified object
// from it zlib stream in an object entry in the packfile.
func (s *Scanner) copyObject(w io.Writer) (n int64, err error) {
- zr := zlibReaderPool.Get().(io.ReadCloser)
- defer zlibReaderPool.Put(zr)
+ zr, err := sync.GetZlibReader(s.r)
+ defer sync.PutZlibReader(zr)
- if err = zr.(zlib.Resetter).Reset(s.r, nil); err != nil {
+ if err != nil {
return 0, fmt.Errorf("zlib reset error: %s", err)
}
- defer ioutil.CheckClose(zr, &err)
- bufp := byteSlicePool.Get().(*[]byte)
- buf := *bufp
- n, err = io.CopyBuffer(w, zr, buf)
- byteSlicePool.Put(bufp)
+ defer ioutil.CheckClose(zr.Reader, &err)
+ buf := sync.GetByteSlice()
+ n, err = io.CopyBuffer(w, zr.Reader, *buf)
+ sync.PutByteSlice(buf)
return
}
-var byteSlicePool = sync.Pool{
- New: func() interface{} {
- b := make([]byte, 32*1024)
- return &b
- },
-}
-
// SeekFromStart sets a new offset from start, returns the old position before
// the change.
func (s *Scanner) SeekFromStart(offset int64) (previous int64, err error) {
@@ -389,10 +380,9 @@ func (s *Scanner) Checksum() (plumbing.Hash, error) {
// Close reads the reader until io.EOF
func (s *Scanner) Close() error {
- bufp := byteSlicePool.Get().(*[]byte)
- buf := *bufp
- _, err := io.CopyBuffer(stdioutil.Discard, s.r, buf)
- byteSlicePool.Put(bufp)
+ buf := sync.GetByteSlice()
+ _, err := io.CopyBuffer(stdioutil.Discard, s.r, *buf)
+ sync.PutByteSlice(buf)
return err
}
@@ -403,13 +393,13 @@ func (s *Scanner) Flush() error {
}
// scannerReader has the following characteristics:
-// - Provides an io.SeekReader impl for bufio.Reader, when the underlying
-// reader supports it.
-// - Keeps track of the current read position, for when the underlying reader
-// isn't an io.SeekReader, but we still want to know the current offset.
-// - Writes to the hash writer what it reads, with the aid of a smaller buffer.
-// The buffer helps avoid a performance penalty for performing small writes
-// to the crc32 hash writer.
+// - Provides an io.SeekReader impl for bufio.Reader, when the underlying
+// reader supports it.
+// - Keeps track of the current read position, for when the underlying reader
+// isn't an io.SeekReader, but we still want to know the current offset.
+// - Writes to the hash writer what it reads, with the aid of a smaller buffer.
+// The buffer helps avoid a performance penalty for performing small writes
+// to the crc32 hash writer.
type scannerReader struct {
reader io.Reader
crc io.Writer
generated by cgit (git 2.34.1) at 2024-11-17 08:51:12 +0000