1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is a "No Compile Test" suite.
// https://dev.chromium.org/developers/testing/no-compile-tests
#include "base/thread_annotations.h"
namespace {
class LOCKABLE Lock {
public:
void Acquire() EXCLUSIVE_LOCK_FUNCTION() {}
void Release() UNLOCK_FUNCTION() {}
};
class SCOPED_LOCKABLE AutoLock {
public:
AutoLock(Lock& lock) EXCLUSIVE_LOCK_FUNCTION(lock) : lock_(lock) {
lock.Acquire();
}
~AutoLock() UNLOCK_FUNCTION() { lock_.Release(); }
private:
Lock& lock_;
};
class ThreadSafe {
public:
void IncrementWithoutRelease();
void IncrementWithoutAcquire();
void IncrementWithWronglyScopedLock();
private:
Lock lock_;
int counter_ GUARDED_BY(lock_);
};
void ThreadSafe::IncrementWithoutRelease() {
lock_.Acquire();
++counter_;
// Forgot to release the lock.
} // expected-error {{mutex 'lock_' is still held at the end of function}}
void ThreadSafe::IncrementWithoutAcquire() {
// Member access without holding the lock guarding it.
++counter_; // expected-error {{writing variable 'counter_' requires holding mutex 'lock_' exclusively}}
}
void ThreadSafe::IncrementWithWronglyScopedLock() {
{
AutoLock auto_lock(lock_);
// The AutoLock will go out of scope before the guarded member access.
}
++counter_; // expected-error {{writing variable 'counter_' requires holding mutex 'lock_' exclusively}}
}
int not_lockable;
int global_counter GUARDED_BY(not_lockable); // expected-error {{'guarded_by' attribute requires arguments whose type is annotated with 'capability' attribute}}
} // anonymous namespace
|
