add windows support

vendor/github.com/google/gopacket/benchmark_test.go

@@ -0,0 +1,194 @@
+// Copyright 2012, Google, Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree.
+
+package gopacket
+
+import (
+	"runtime"
+	"testing"
+)
+
+// A few benchmarks for figuring out exactly how fast some underlying Go
+// things are.
+
+type testError struct{}
+
+func (t *testError) Error() string { return "abc" }
+
+func BenchmarkTypeAssertion(b *testing.B) {
+	var e error = &testError{}
+	for i := 0; i < b.N; i++ {
+		_, _ = e.(*testError)
+	}
+}
+
+func BenchmarkMapLookup(b *testing.B) {
+	m := map[LayerType]bool{
+		LayerTypePayload: true,
+	}
+	for i := 0; i < b.N; i++ {
+		_ = m[LayerTypePayload]
+	}
+}
+
+func BenchmarkNilMapLookup(b *testing.B) {
+	var m map[LayerType]bool
+	for i := 0; i < b.N; i++ {
+		_ = m[LayerTypePayload]
+	}
+}
+
+func BenchmarkNilMapLookupWithNilCheck(b *testing.B) {
+	var m map[LayerType]bool
+	for i := 0; i < b.N; i++ {
+		if m != nil {
+			_ = m[LayerTypePayload]
+		}
+	}
+}
+
+func BenchmarkArrayLookup(b *testing.B) {
+	m := make([]bool, 100)
+	for i := 0; i < b.N; i++ {
+		_ = m[LayerTypePayload]
+	}
+}
+
+var testError1 = &testError{}
+var testError2 error = testError1
+
+func BenchmarkTypeToInterface1(b *testing.B) {
+	var e error
+	for i := 0; i < b.N; i++ {
+		e = testError1
+	}
+	// Have to do someting with 'e' or the compiler complains about an unused
+	// variable.
+	testError2 = e
+}
+func BenchmarkTypeToInterface2(b *testing.B) {
+	var e error
+	for i := 0; i < b.N; i++ {
+		e = testError2
+	}
+	// Have to do someting with 'e' or the compiler complains about an unused
+	// variable.
+	testError2 = e
+}
+
+var decodeOpts DecodeOptions
+
+func decodeOptsByValue(_ DecodeOptions)    {}
+func decodeOptsByPointer(_ *DecodeOptions) {}
+func BenchmarkPassDecodeOptionsByValue(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decodeOptsByValue(decodeOpts)
+	}
+}
+func BenchmarkPassDecodeOptionsByPointer(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decodeOptsByPointer(&decodeOpts)
+	}
+}
+
+func BenchmarkLockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		runtime.LockOSThread()
+	}
+}
+func BenchmarkUnlockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		runtime.UnlockOSThread()
+	}
+}
+func lockUnlock() {
+	runtime.LockOSThread()
+	runtime.UnlockOSThread()
+}
+func lockDeferUnlock() {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+}
+func BenchmarkLockUnlockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		lockUnlock()
+	}
+}
+func BenchmarkLockDeferUnlockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		lockDeferUnlock()
+	}
+}
+
+func BenchmarkUnbufferedChannel(b *testing.B) {
+	ca := make(chan bool)
+	cb := make(chan bool)
+	defer close(ca)
+	go func() {
+		defer close(cb)
+		for range ca {
+			cb <- true
+		}
+	}()
+	for i := 0; i < b.N; i++ {
+		ca <- true
+		<-cb
+	}
+}
+func BenchmarkSmallBufferedChannel(b *testing.B) {
+	ca := make(chan bool, 1)
+	cb := make(chan bool, 1)
+	defer close(ca)
+	go func() {
+		defer close(cb)
+		for range ca {
+			cb <- true
+		}
+	}()
+	for i := 0; i < b.N; i++ {
+		ca <- true
+		<-cb
+	}
+}
+func BenchmarkLargeBufferedChannel(b *testing.B) {
+	ca := make(chan bool, 1000)
+	cb := make(chan bool, 1000)
+	defer close(ca)
+	go func() {
+		defer close(cb)
+		for range ca {
+			cb <- true
+		}
+	}()
+	for i := 0; i < b.N; i++ {
+		ca <- true
+		<-cb
+	}
+}
+func BenchmarkEndpointFastHashShort(b *testing.B) {
+	e := Endpoint{typ: 1, len: 2}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}
+func BenchmarkEndpointFastHashLong(b *testing.B) {
+	e := Endpoint{typ: 1, len: 16}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}
+func BenchmarkFlowFastHashShort(b *testing.B) {
+	e := Flow{typ: 1, slen: 2, dlen: 2}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}
+func BenchmarkFlowFastHashLong(b *testing.B) {
+	e := Flow{typ: 1, slen: 16, dlen: 16}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}