146 lines
3.0 KiB
Go
146 lines
3.0 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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)
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func testLockedAccessValid(tc *oneGuardStruct) {
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tc.mu.Lock()
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tc.guardedField = 1
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tc.mu.Unlock()
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}
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func testLockedAccessIgnore(tc *oneGuardStruct) {
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tc.mu.Lock()
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tc.unguardedField = 1
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tc.mu.Unlock()
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}
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func testUnlockedAccessInvalidWrite(tc *oneGuardStruct) {
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tc.guardedField = 2 // +checklocksfail
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}
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func testUnlockedAccessInvalidRead(tc *oneGuardStruct) {
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x := tc.guardedField // +checklocksfail
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_ = x
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}
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func testUnlockedAccessValid(tc *oneGuardStruct) {
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tc.unguardedField = 2
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}
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func testCallValidAccess(tc *oneGuardStruct) {
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callValidAccess(tc)
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}
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func callValidAccess(tc *oneGuardStruct) {
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tc.mu.Lock()
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tc.guardedField = 1
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tc.mu.Unlock()
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}
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func testCallValueMixup(tc *oneGuardStruct) {
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callValueMixup(tc, tc)
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}
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func callValueMixup(tc1, tc2 *oneGuardStruct) {
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tc1.mu.Lock()
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tc2.guardedField = 2 // +checklocksfail
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tc1.mu.Unlock()
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}
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func testCallPreconditionsInvalid(tc *oneGuardStruct) {
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callPreconditions(tc) // +checklocksfail
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}
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func testCallPreconditionsValid(tc *oneGuardStruct) {
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tc.mu.Lock()
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callPreconditions(tc)
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tc.mu.Unlock()
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}
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// +checklocks:tc.mu
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func callPreconditions(tc *oneGuardStruct) {
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tc.guardedField = 1
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}
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type nestedFieldsStruct struct {
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mu sync.Mutex
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// +checklocks:mu
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nestedStruct struct {
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nested1 int
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nested2 int
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}
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}
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func testNestedGuardValid(tc *nestedFieldsStruct) {
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tc.mu.Lock()
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tc.nestedStruct.nested1 = 1
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tc.nestedStruct.nested2 = 2
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tc.mu.Unlock()
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}
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func testNestedGuardInvalid(tc *nestedFieldsStruct) {
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tc.nestedStruct.nested1 = 1 // +checklocksfail
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}
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type rwGuardStruct struct {
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rwMu sync.RWMutex
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// +checklocks:rwMu
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guardedField int
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}
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func testRWValidRead(tc *rwGuardStruct) {
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tc.rwMu.Lock()
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_ = tc.guardedField
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tc.rwMu.Unlock()
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}
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func testRWValidWrite(tc *rwGuardStruct) {
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tc.rwMu.Lock()
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tc.guardedField = 2
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tc.rwMu.Unlock()
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}
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func testRWInvalidWrite(tc *rwGuardStruct) {
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tc.guardedField = 3 // +checklocksfail
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}
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func testRWInvalidRead(tc *rwGuardStruct) {
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x := tc.guardedField + 3 // +checklocksfail
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_ = x
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}
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func testTwoLocksDoubleGuardStructValid(tc *twoLocksDoubleGuardStruct) {
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tc.mu.Lock()
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tc.secondMu.Lock()
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tc.doubleGuardedField = 1
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tc.secondMu.Unlock()
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}
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func testTwoLocksDoubleGuardStructOnlyOne(tc *twoLocksDoubleGuardStruct) {
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tc.mu.Lock()
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tc.doubleGuardedField = 2 // +checklocksfail
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tc.mu.Unlock()
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}
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func testTwoLocksDoubleGuardStructInvalid(tc *twoLocksDoubleGuardStruct) {
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tc.doubleGuardedField = 3 // +checklocksfail:2
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}
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