Merge release-20210112.0-25-ge57ebcd37 (automated)

1 files changed, 0 insertions, 83 deletions

diff --git a/pkg/buffer/pool.go b/pkg/buffer/pool.go
deleted file mode 100644
index 7ad6132ab..000000000
--- a/pkg/buffer/pool.go
+++ /dev/null
@@ -1,83 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package buffer
-
-const (
-	// embeddedCount is the number of buffer structures embedded in the pool. It
-	// is also the number for overflow allocations.
-	embeddedCount = 8
-
-	// defaultBufferSize is the default size for each underlying storage buffer.
-	//
-	// It is slightly less than two pages. This is done intentionally to ensure
-	// that the buffer object aligns with runtime internals. This two page size
-	// will effectively minimize internal fragmentation, but still have a large
-	// enough chunk to limit excessive segmentation.
-	defaultBufferSize = 8144
-)
-
-// pool allocates buffer.
-//
-// It contains an embedded buffer storage for fast path when the number of
-// buffers needed is small.
-//
-// +stateify savable
-type pool struct {
-	bufferSize      int
-	avail           []buffer              `state:"nosave"`
-	embeddedStorage [embeddedCount]buffer `state:"wait"`
-}
-
-// get gets a new buffer from p.
-func (p *pool) get() *buffer {
-	if p.avail == nil {
-		p.avail = p.embeddedStorage[:]
-	}
-	if len(p.avail) == 0 {
-		p.avail = make([]buffer, embeddedCount)
-	}
-	if p.bufferSize <= 0 {
-		p.bufferSize = defaultBufferSize
-	}
-	buf := &p.avail[0]
-	buf.init(p.bufferSize)
-	p.avail = p.avail[1:]
-	return buf
-}
-
-// put releases buf.
-func (p *pool) put(buf *buffer) {
-	// Remove reference to the underlying storage, allowing it to be garbage
-	// collected.
-	buf.data = nil
-}
-
-// setBufferSize sets the size of underlying storage buffer for future
-// allocations. It can be called at any time.
-func (p *pool) setBufferSize(size int) {
-	p.bufferSize = size
-}
-
-// afterLoad is invoked by stateify.
-func (p *pool) afterLoad() {
-	// S/R does not save subslice into embeddedStorage correctly. Restore
-	// available portion of embeddedStorage manually. Restore as nil if none used.
-	for i := len(p.embeddedStorage); i > 0; i-- {
-		if p.embeddedStorage[i-1].data != nil {
-			p.avail = p.embeddedStorage[i:]
-			break
-		}
-	}
-}