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// Copyright 2021 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 test
import (
"sync"
)
// oneReadGuardStruct has one read-guarded field.
type oneReadGuardStruct struct {
mu sync.RWMutex
// +checklocks:mu
guardedField int
}
func testRWAccessValidRead(tc *oneReadGuardStruct) {
tc.mu.Lock()
_ = tc.guardedField
tc.mu.Unlock()
tc.mu.RLock()
_ = tc.guardedField
tc.mu.RUnlock()
}
func testRWAccessValidWrite(tc *oneReadGuardStruct) {
tc.mu.Lock()
tc.guardedField = 1
tc.mu.Unlock()
}
func testRWAccessInvalidWrite(tc *oneReadGuardStruct) {
tc.guardedField = 2 // +checklocksfail
tc.mu.RLock()
tc.guardedField = 2 // +checklocksfail
tc.mu.RUnlock()
}
func testRWAccessInvalidRead(tc *oneReadGuardStruct) {
_ = tc.guardedField // +checklocksfail
}
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