mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Ting-Yu Wang
c0f21bb19a
This change changes `buffer.data` into a `[]byte`, from `[bufferSize]byte`. In exchange, each `buffer` is now grouped together to reduce the number of allocation. Plus, `View` now holds an embeded list of `buffer` (via `pool`) to support the happy path which the number of buffer is small. Expect no extra allocation for the happy path. It is to enable the use case for PacketBuffer, which * each `View` is small (way less than `defaultBufferSize`), and * needs to dynamically transfer ownership of `[]byte` to `View`. (to allow gradual migration) PiperOrigin-RevId: 333197252
52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
// Copyright 2020 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package buffer
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import (
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"testing"
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)
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func TestGetDefaultBufferSize(t *testing.T) {
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var p pool
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for i := 0; i < embeddedCount*2; i++ {
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buf := p.get()
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if got, want := len(buf.data), defaultBufferSize; got != want {
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t.Errorf("#%d len(buf.data) = %d, want %d", i, got, want)
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}
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}
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}
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func TestGetCustomBufferSize(t *testing.T) {
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const size = 100
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var p pool
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p.setBufferSize(size)
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for i := 0; i < embeddedCount*2; i++ {
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buf := p.get()
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if got, want := len(buf.data), size; got != want {
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t.Errorf("#%d len(buf.data) = %d, want %d", i, got, want)
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}
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}
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}
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func TestPut(t *testing.T) {
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var p pool
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buf := p.get()
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p.put(buf)
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if buf.data != nil {
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t.Errorf("buf.data = %x, want nil", buf.data)
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}
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}
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