github.com/metacubex/gvisor@v0.0.0-20240320004321-933faba989ec/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() {}