github.com/noisysockets/netstack@v0.6.0/pkg/sync/nocopy.go (about) 1 // Copyright 2020 The gVisor Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package sync 16 17 // NoCopy may be embedded into structs which must not be copied 18 // after the first use. 19 // 20 // See https://golang.org/issues/8005#issuecomment-190753527 21 // for details. 22 type NoCopy struct{} 23 24 // Lock is a no-op used by -copylocks checker from `go vet`. 25 func (*NoCopy) Lock() {} 26 27 // Unlock is a no-op used by -copylocks checker from `go vet`. 28 func (*NoCopy) Unlock() {}