initial commit

Signed-off-by: Rastislav Szabo <raszabo@cisco.com>

1 files changed, 165 insertions, 0 deletions

diff --git a/vendor/github.com/lunixbochs/struc/bench_test.go b/vendor/github.com/lunixbochs/struc/bench_test.go
new file mode 100644
index 0000000..d73c110
--- /dev/null
+++ b/vendor/github.com/lunixbochs/struc/bench_test.go
@@ -0,0 +1,165 @@
+package struc
+
+import (
+	"bytes"
+	"encoding/binary"
+	"testing"
+)
+
+type BenchExample struct {
+	Test    [5]byte
+	A       int32
+	B, C, D int16
+	Test2   [4]byte
+	Length  int32
+}
+
+type BenchStrucExample struct {
+	Test    [5]byte `struc:"[5]byte"`
+	A       int     `struc:"int32"`
+	B, C, D int     `struc:"int16"`
+	Test2   [4]byte `struc:"[4]byte"`
+	Length  int     `struc:"int32,sizeof=Data"`
+	Data    []byte
+}
+
+var benchRef = &BenchExample{
+	[5]byte{1, 2, 3, 4, 5},
+	1, 2, 3, 4,
+	[4]byte{1, 2, 3, 4},
+	8,
+}
+
+var eightBytes = []byte("8bytestr")
+
+var benchStrucRef = &BenchStrucExample{
+	[5]byte{1, 2, 3, 4, 5},
+	1, 2, 3, 4,
+	[4]byte{1, 2, 3, 4},
+	8, eightBytes,
+}
+
+func BenchmarkEncode(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		var buf bytes.Buffer
+		err := Pack(&buf, benchStrucRef)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkStdlibEncode(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		var buf bytes.Buffer
+		err := binary.Write(&buf, binary.BigEndian, benchRef)
+		if err != nil {
+			b.Fatal(err)
+		}
+		_, err = buf.Write(eightBytes)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkManualEncode(b *testing.B) {
+	order := binary.BigEndian
+	s := benchStrucRef
+	for i := 0; i < b.N; i++ {
+		var buf bytes.Buffer
+		tmp := make([]byte, 29)
+		copy(tmp[0:5], s.Test[:])
+		order.PutUint32(tmp[5:9], uint32(s.A))
+		order.PutUint16(tmp[9:11], uint16(s.B))
+		order.PutUint16(tmp[11:13], uint16(s.C))
+		order.PutUint16(tmp[13:15], uint16(s.D))
+		copy(tmp[15:19], s.Test2[:])
+		order.PutUint32(tmp[19:23], uint32(s.Length))
+		copy(tmp[23:], s.Data)
+		_, err := buf.Write(tmp)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkDecode(b *testing.B) {
+	var out BenchStrucExample
+	var buf bytes.Buffer
+	if err := Pack(&buf, benchStrucRef); err != nil {
+		b.Fatal(err)
+	}
+	bufBytes := buf.Bytes()
+	for i := 0; i < b.N; i++ {
+		buf := bytes.NewReader(bufBytes)
+		err := Unpack(buf, &out)
+		if err != nil {
+			b.Fatal(err)
+		}
+		out.Data = nil
+	}
+}
+
+func BenchmarkStdlibDecode(b *testing.B) {
+	var out BenchExample
+	var buf bytes.Buffer
+	binary.Write(&buf, binary.BigEndian, *benchRef)
+	_, err := buf.Write(eightBytes)
+	if err != nil {
+		b.Fatal(err)
+	}
+	bufBytes := buf.Bytes()
+	for i := 0; i < b.N; i++ {
+		buf := bytes.NewReader(bufBytes)
+		err := binary.Read(buf, binary.BigEndian, &out)
+		if err != nil {
+			b.Fatal(err)
+		}
+		tmp := make([]byte, out.Length)
+		_, err = buf.Read(tmp)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkManualDecode(b *testing.B) {
+	var o BenchStrucExample
+	var buf bytes.Buffer
+	if err := Pack(&buf, benchStrucRef); err != nil {
+		b.Fatal(err)
+	}
+	tmp := buf.Bytes()
+	order := binary.BigEndian
+	for i := 0; i < b.N; i++ {
+		copy(o.Test[:], tmp[0:5])
+		o.A = int(order.Uint32(tmp[5:9]))
+		o.B = int(order.Uint16(tmp[9:11]))
+		o.C = int(order.Uint16(tmp[11:13]))
+		o.D = int(order.Uint16(tmp[13:15]))
+		copy(o.Test2[:], tmp[15:19])
+		o.Length = int(order.Uint32(tmp[19:23]))
+		o.Data = make([]byte, o.Length)
+		copy(o.Data, tmp[23:])
+	}
+}
+
+func BenchmarkFullEncode(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		var buf bytes.Buffer
+		if err := Pack(&buf, reference); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkFullDecode(b *testing.B) {
+	var out Example
+	for i := 0; i < b.N; i++ {
+		buf := bytes.NewBuffer(referenceBytes)
+		if err := Unpack(buf, &out); err != nil {
+			b.Fatal(err)
+		}
+	}
+}