92 lines
2.4 KiB
Go
92 lines
2.4 KiB
Go
// Copyright 2020 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package test
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import (
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"sync"
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"sync/atomic"
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)
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type atomicStruct struct {
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accessedNormally int32
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// +checkatomic
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accessedAtomically int32
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// +checklocksignore
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ignored int32
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}
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func testNormalAccess(tc *atomicStruct, v chan int32, p chan *int32) {
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v <- tc.accessedNormally
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p <- &tc.accessedNormally
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}
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func testAtomicAccess(tc *atomicStruct, v chan int32) {
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v <- atomic.LoadInt32(&tc.accessedAtomically)
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}
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func testAtomicAccessInvalid(tc *atomicStruct, v chan int32) {
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v <- atomic.LoadInt32(&tc.accessedNormally) // +checklocksfail
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}
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func testNormalAccessInvalid(tc *atomicStruct, v chan int32, p chan *int32) {
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v <- tc.accessedAtomically // +checklocksfail
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p <- &tc.accessedAtomically // +checklocksfail
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}
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func testIgnored(tc *atomicStruct, v chan int32, p chan *int32) {
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v <- atomic.LoadInt32(&tc.ignored)
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v <- tc.ignored
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p <- &tc.ignored
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}
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type atomicMixedStruct struct {
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mu sync.Mutex
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// +checkatomic
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// +checklocks:mu
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accessedMixed int32
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}
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func testAtomicMixedValidRead(tc *atomicMixedStruct, v chan int32) {
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v <- atomic.LoadInt32(&tc.accessedMixed)
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}
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func testAtomicMixedInvalidRead(tc *atomicMixedStruct, v chan int32, p chan *int32) {
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v <- tc.accessedMixed // +checklocksfail
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p <- &tc.accessedMixed // +checklocksfail
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}
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func testAtomicMixedValidLockedWrite(tc *atomicMixedStruct, v chan int32, p chan *int32) {
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tc.mu.Lock()
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atomic.StoreInt32(&tc.accessedMixed, 1)
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tc.mu.Unlock()
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}
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func testAtomicMixedInvalidLockedWrite(tc *atomicMixedStruct, v chan int32, p chan *int32) {
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tc.mu.Lock()
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tc.accessedMixed = 1 // +checklocksfail:2
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tc.mu.Unlock()
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}
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func testAtomicMixedInvalidAtomicWrite(tc *atomicMixedStruct, v chan int32, p chan *int32) {
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atomic.StoreInt32(&tc.accessedMixed, 1) // +checklocksfail
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}
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func testAtomicMixedInvalidWrite(tc *atomicMixedStruct, v chan int32, p chan *int32) {
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tc.accessedMixed = 1 // +checklocksfail:2
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}
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