summaryrefslogtreecommitdiffhomepage
path: root/pkg/tcpip/hash
diff options
context:
space:
mode:
Diffstat (limited to 'pkg/tcpip/hash')
-rw-r--r--pkg/tcpip/hash/jenkins/BUILD22
-rwxr-xr-xpkg/tcpip/hash/jenkins/jenkins_state_autogen.go4
-rw-r--r--pkg/tcpip/hash/jenkins/jenkins_test.go176
3 files changed, 4 insertions, 198 deletions
diff --git a/pkg/tcpip/hash/jenkins/BUILD b/pkg/tcpip/hash/jenkins/BUILD
deleted file mode 100644
index 0c5c20cea..000000000
--- a/pkg/tcpip/hash/jenkins/BUILD
+++ /dev/null
@@ -1,22 +0,0 @@
-load("//tools/go_stateify:defs.bzl", "go_library")
-load("@io_bazel_rules_go//go:def.bzl", "go_test")
-
-package(licenses = ["notice"])
-
-go_library(
- name = "jenkins",
- srcs = ["jenkins.go"],
- importpath = "gvisor.dev/gvisor/pkg/tcpip/hash/jenkins",
- visibility = [
- "//visibility:public",
- ],
-)
-
-go_test(
- name = "jenkins_test",
- size = "small",
- srcs = [
- "jenkins_test.go",
- ],
- embed = [":jenkins"],
-)
diff --git a/pkg/tcpip/hash/jenkins/jenkins_state_autogen.go b/pkg/tcpip/hash/jenkins/jenkins_state_autogen.go
new file mode 100755
index 000000000..310f0ee6d
--- /dev/null
+++ b/pkg/tcpip/hash/jenkins/jenkins_state_autogen.go
@@ -0,0 +1,4 @@
+// automatically generated by stateify.
+
+package jenkins
+
diff --git a/pkg/tcpip/hash/jenkins/jenkins_test.go b/pkg/tcpip/hash/jenkins/jenkins_test.go
deleted file mode 100644
index 4c78b5808..000000000
--- a/pkg/tcpip/hash/jenkins/jenkins_test.go
+++ /dev/null
@@ -1,176 +0,0 @@
-// Copyright 2018 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 jenkins
-
-import (
- "bytes"
- "encoding/binary"
- "hash"
- "hash/fnv"
- "math"
- "testing"
-)
-
-func TestGolden32(t *testing.T) {
- var golden32 = []struct {
- out []byte
- in string
- }{
- {[]byte{0x00, 0x00, 0x00, 0x00}, ""},
- {[]byte{0xca, 0x2e, 0x94, 0x42}, "a"},
- {[]byte{0x45, 0xe6, 0x1e, 0x58}, "ab"},
- {[]byte{0xed, 0x13, 0x1f, 0x5b}, "abc"},
- }
-
- hash := New32()
-
- for _, g := range golden32 {
- hash.Reset()
- done, error := hash.Write([]byte(g.in))
- if error != nil {
- t.Fatalf("write error: %s", error)
- }
- if done != len(g.in) {
- t.Fatalf("wrote only %d out of %d bytes", done, len(g.in))
- }
- if actual := hash.Sum(nil); !bytes.Equal(g.out, actual) {
- t.Errorf("hash(%q) = 0x%x want 0x%x", g.in, actual, g.out)
- }
- }
-}
-
-func TestIntegrity32(t *testing.T) {
- data := []byte{'1', '2', 3, 4, 5}
-
- h := New32()
- h.Write(data)
- sum := h.Sum(nil)
-
- if size := h.Size(); size != len(sum) {
- t.Fatalf("Size()=%d but len(Sum())=%d", size, len(sum))
- }
-
- if a := h.Sum(nil); !bytes.Equal(sum, a) {
- t.Fatalf("first Sum()=0x%x, second Sum()=0x%x", sum, a)
- }
-
- h.Reset()
- h.Write(data)
- if a := h.Sum(nil); !bytes.Equal(sum, a) {
- t.Fatalf("Sum()=0x%x, but after Reset() Sum()=0x%x", sum, a)
- }
-
- h.Reset()
- h.Write(data[:2])
- h.Write(data[2:])
- if a := h.Sum(nil); !bytes.Equal(sum, a) {
- t.Fatalf("Sum()=0x%x, but with partial writes, Sum()=0x%x", sum, a)
- }
-
- sum32 := h.(hash.Hash32).Sum32()
- if sum32 != binary.BigEndian.Uint32(sum) {
- t.Fatalf("Sum()=0x%x, but Sum32()=0x%x", sum, sum32)
- }
-}
-
-func BenchmarkJenkins32KB(b *testing.B) {
- h := New32()
-
- b.SetBytes(1024)
- data := make([]byte, 1024)
- for i := range data {
- data[i] = byte(i)
- }
- in := make([]byte, 0, h.Size())
-
- b.ResetTimer()
- for i := 0; i < b.N; i++ {
- h.Reset()
- h.Write(data)
- h.Sum(in)
- }
-}
-
-func BenchmarkFnv32(b *testing.B) {
- arr := make([]int64, 1000)
- for i := 0; i < b.N; i++ {
- var payload [8]byte
- binary.BigEndian.PutUint32(payload[:4], uint32(i))
- binary.BigEndian.PutUint32(payload[4:], uint32(i))
-
- h := fnv.New32()
- h.Write(payload[:])
- idx := int(h.Sum32()) % len(arr)
- arr[idx]++
- }
- b.StopTimer()
- c := 0
- if b.N > 1000000 {
- for i := 0; i < len(arr)-1; i++ {
- if math.Abs(float64(arr[i]-arr[i+1]))/float64(arr[i]) > float64(0.1) {
- if c == 0 {
- b.Logf("i %d val[i] %d val[i+1] %d b.N %b\n", i, arr[i], arr[i+1], b.N)
- }
- c++
- }
- }
- if c > 0 {
- b.Logf("Unbalanced buckets: %d", c)
- }
- }
-}
-
-func BenchmarkSum32(b *testing.B) {
- arr := make([]int64, 1000)
- for i := 0; i < b.N; i++ {
- var payload [8]byte
- binary.BigEndian.PutUint32(payload[:4], uint32(i))
- binary.BigEndian.PutUint32(payload[4:], uint32(i))
- h := Sum32(0)
- h.Write(payload[:])
- idx := int(h.Sum32()) % len(arr)
- arr[idx]++
- }
- b.StopTimer()
- if b.N > 1000000 {
- for i := 0; i < len(arr)-1; i++ {
- if math.Abs(float64(arr[i]-arr[i+1]))/float64(arr[i]) > float64(0.1) {
- b.Logf("val[%3d]=%8d\tval[%3d]=%8d\tb.N=%b\n", i, arr[i], i+1, arr[i+1], b.N)
- break
- }
- }
- }
-}
-
-func BenchmarkNew32(b *testing.B) {
- arr := make([]int64, 1000)
- for i := 0; i < b.N; i++ {
- var payload [8]byte
- binary.BigEndian.PutUint32(payload[:4], uint32(i))
- binary.BigEndian.PutUint32(payload[4:], uint32(i))
- h := New32()
- h.Write(payload[:])
- idx := int(h.Sum32()) % len(arr)
- arr[idx]++
- }
- b.StopTimer()
- if b.N > 1000000 {
- for i := 0; i < len(arr)-1; i++ {
- if math.Abs(float64(arr[i]-arr[i+1]))/float64(arr[i]) > float64(0.1) {
- b.Logf("val[%3d]=%8d\tval[%3d]=%8d\tb.N=%b\n", i, arr[i], i+1, arr[i+1], b.N)
- break
- }
- }
- }
-}