| // Copyright 2020 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 sync |
| |
| // NoCopy may be embedded into structs which must not be copied |
| // after the first use. |
| // |
| // See https://golang.org/issues/8005#issuecomment-190753527 |
| // for details. |
| type NoCopy struct{} |
| |
| // Lock is a no-op used by -copylocks checker from `go vet`. |
| func (*NoCopy) Lock() {} |
| |
| // Unlock is a no-op used by -copylocks checker from `go vet`. |
| func (*NoCopy) Unlock() {} |