gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/tools/checklocks/test/locker.go (about)

     1  // Copyright 2021 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 test
    16  
    17  import "sync"
    18  
    19  type lockerStruct struct {
    20  	mu sync.Locker
    21  	// +checklocks:mu
    22  	guardedField int
    23  }
    24  
    25  func testLockerValid(tc *lockerStruct) {
    26  	tc.mu.Lock()
    27  	tc.guardedField = 1
    28  	tc.mu.Unlock()
    29  }
    30  
    31  func testLockerInvalid(tc *lockerStruct) {
    32  	tc.guardedField = 1 // +checklocksfail
    33  }