yggdrasil-network/yggdrasil-go
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optimize wire_put_uint64; use protokey for flowlabel fallback.

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cathugger 2018-07-30 01:58:52 +00:00
parent fec7100898
commit 36dcab9300
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GPG key ID: 9BADDA2DAF6F01A8
2 changed files with 20 additions and 15 deletions
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20
src/yggdrasil/wire.go
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@ -25,19 +25,15 @@ func wire_encode_uint64(elem uint64) []byte {
// Encode uint64 using a variable length scheme.
// Similar to binary.Uvarint, but big-endian.
func wire_put_uint64(elem uint64, out []byte) []byte {
bs := make([]byte, 0, 10)
bs = append(bs, byte(elem&0x7f))
for e := elem >> 7; e > 0; e >>= 7 {
bs = append(bs, byte(e|0x80))
func wire_put_uint64(e uint64, out []byte) []byte {
var b [10]byte
i := len(b) - 1
b[i] = byte(e & 0x7f)
for e >>= 7; e != 0; e >>= 7 {
i--
b[i] = byte(e | 0x80)
}
// Now reverse bytes, because we set them in the wrong order
// TODO just put them in the right place the first time...
last := len(bs) - 1
for idx := 0; idx < len(bs)/2; idx++ {
bs[idx], bs[last-idx] = bs[last-idx], bs[idx]
}
return append(out, bs...)
return append(out, b[i:]...)
}
// Returns the length of a wire encoded uint64 of this value.