mirror of
https://github.com/hanzoai/visor.git
synced 2026-09-24 17:04:14 +00:00
Tamir Duberstein
4a4b76e37e
Repurpose checklocksalias as a type-level annotation so alias relationships are declared once per type instead of per call. Update tcp/ipv4 annotations accordingly and drop per-call workarounds. Enhance checklocksfail to allow substring matching so that robust tests for checklocksalias are possible.
73 lines
2.0 KiB
Go
73 lines
2.0 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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"math/rand"
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)
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func testInconsistentReturn(tc *oneGuardStruct) { // +checklocksfail
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if x := rand.Intn(10); x%2 == 1 {
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tc.mu.Lock()
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}
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}
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func testConsistentBranching(tc *oneGuardStruct) {
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x := rand.Intn(10)
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if x%2 == 1 {
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tc.mu.Lock()
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} else {
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tc.mu.Lock()
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}
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tc.guardedField = 1
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if x%2 == 1 {
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tc.mu.Unlock()
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} else {
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tc.mu.Unlock()
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}
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}
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func testInconsistentBranching(tc *oneGuardStruct) { // +checklocksfail=incompatible return states|incompatible return states
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// We traverse the control flow graph in all consistent ways. We cannot
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// determine however, that the first if block and second if block will
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// evaluate to the same condition. Therefore, there are two consistent
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// paths through this code, and two inconsistent paths. Either way, the
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// guardedField should be also marked as an invalid access.
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x := rand.Intn(10)
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if x%2 == 1 {
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tc.mu.Lock()
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}
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tc.guardedField = 1 // +checklocksfail
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if x%2 == 1 {
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tc.mu.Unlock() // +checklocksforce
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}
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}
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func testUnboundedLocks(tc []*oneGuardStruct) {
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for _, l := range tc {
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l.mu.Lock()
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}
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// This test should have the above *not fail*, though the exact
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// lock state cannot be tracked through the below. Therefore, we
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// expect the next loop to actually fail, and we force the unlock
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// loop to succeed in exactly the same way.
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for _, l := range tc {
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l.guardedField = 1 // +checklocksfail
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}
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for _, l := range tc {
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l.mu.Unlock() // +checklocksforce
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}
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}
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