1 | // Test this without pch. |
2 | // RUN: %clang_cc1 -include %s -fsyntax-only -verify -Wthread-safety -std=c++11 %s |
3 | |
4 | // Test with pch. |
5 | // RUN: %clang_cc1 -emit-pch -o %t %s -std=c++11 |
6 | // RUN: %clang_cc1 -include-pch %t -fsyntax-only -verify -Wthread-safety -std=c++11 %s |
7 | |
8 | #ifndef HEADER |
9 | #define HEADER |
10 | |
11 | #define LOCKABLE __attribute__ ((lockable)) |
12 | #define SCOPED_LOCKABLE __attribute__ ((scoped_lockable)) |
13 | #define GUARDED_BY(x) __attribute__ ((guarded_by(x))) |
14 | #define GUARDED_VAR __attribute__ ((guarded_var)) |
15 | #define PT_GUARDED_BY(x) __attribute__ ((pt_guarded_by(x))) |
16 | #define PT_GUARDED_VAR __attribute__ ((pt_guarded_var)) |
17 | #define ACQUIRED_AFTER(...) __attribute__ ((acquired_after(__VA_ARGS__))) |
18 | #define ACQUIRED_BEFORE(...) __attribute__ ((acquired_before(__VA_ARGS__))) |
19 | #define EXCLUSIVE_LOCK_FUNCTION(...) __attribute__ ((exclusive_lock_function(__VA_ARGS__))) |
20 | #define SHARED_LOCK_FUNCTION(...) __attribute__ ((shared_lock_function(__VA_ARGS__))) |
21 | #define EXCLUSIVE_TRYLOCK_FUNCTION(...) __attribute__ ((exclusive_trylock_function(__VA_ARGS__))) |
22 | #define SHARED_TRYLOCK_FUNCTION(...) __attribute__ ((shared_trylock_function(__VA_ARGS__))) |
23 | #define UNLOCK_FUNCTION(...) __attribute__ ((unlock_function(__VA_ARGS__))) |
24 | #define LOCK_RETURNED(x) __attribute__ ((lock_returned(x))) |
25 | #define LOCKS_EXCLUDED(...) __attribute__ ((locks_excluded(__VA_ARGS__))) |
26 | #define EXCLUSIVE_LOCKS_REQUIRED(...) \ |
27 | __attribute__ ((exclusive_locks_required(__VA_ARGS__))) |
28 | #define SHARED_LOCKS_REQUIRED(...) \ |
29 | __attribute__ ((shared_locks_required(__VA_ARGS__))) |
30 | #define NO_THREAD_SAFETY_ANALYSIS __attribute__ ((no_thread_safety_analysis)) |
31 | |
32 | |
33 | class __attribute__((lockable)) Mutex { |
34 | public: |
35 | void Lock() __attribute__((exclusive_lock_function)); |
36 | void ReaderLock() __attribute__((shared_lock_function)); |
37 | void Unlock() __attribute__((unlock_function)); |
38 | bool TryLock() __attribute__((exclusive_trylock_function(true))); |
39 | bool ReaderTryLock() __attribute__((shared_trylock_function(true))); |
40 | void LockWhen(const int &cond) __attribute__((exclusive_lock_function)); |
41 | }; |
42 | |
43 | class __attribute__((scoped_lockable)) MutexLock { |
44 | public: |
45 | MutexLock(Mutex *mu) __attribute__((exclusive_lock_function(mu))); |
46 | ~MutexLock() __attribute__((unlock_function)); |
47 | }; |
48 | |
49 | class __attribute__((scoped_lockable)) ReaderMutexLock { |
50 | public: |
51 | ReaderMutexLock(Mutex *mu) __attribute__((exclusive_lock_function(mu))); |
52 | ~ReaderMutexLock() __attribute__((unlock_function)); |
53 | }; |
54 | |
55 | class SCOPED_LOCKABLE ReleasableMutexLock { |
56 | public: |
57 | ReleasableMutexLock(Mutex *mu) EXCLUSIVE_LOCK_FUNCTION(mu); |
58 | ~ReleasableMutexLock() UNLOCK_FUNCTION(); |
59 | |
60 | void Release() UNLOCK_FUNCTION(); |
61 | }; |
62 | |
63 | |
64 | // The universal lock, written "*", allows checking to be selectively turned |
65 | // off for a particular piece of code. |
66 | void beginNoWarnOnReads() SHARED_LOCK_FUNCTION("*"); |
67 | void endNoWarnOnReads() UNLOCK_FUNCTION("*"); |
68 | void beginNoWarnOnWrites() EXCLUSIVE_LOCK_FUNCTION("*"); |
69 | void endNoWarnOnWrites() UNLOCK_FUNCTION("*"); |
70 | |
71 | |
72 | // For testing handling of smart pointers. |
73 | template<class T> |
74 | class SmartPtr { |
75 | public: |
76 | SmartPtr(T* p) : ptr_(p) { } |
77 | SmartPtr(const SmartPtr<T>& p) : ptr_(p.ptr_) { } |
78 | ~SmartPtr(); |
79 | |
80 | T* get() const { return ptr_; } |
81 | T* operator->() const { return ptr_; } |
82 | T& operator*() const { return *ptr_; } |
83 | |
84 | private: |
85 | T* ptr_; |
86 | }; |
87 | |
88 | |
89 | // For testing destructor calls and cleanup. |
90 | class MyString { |
91 | public: |
92 | MyString(const char* s); |
93 | ~MyString(); |
94 | }; |
95 | |
96 | |
97 | |
98 | Mutex sls_mu; |
99 | |
100 | Mutex sls_mu2 __attribute__((acquired_after(sls_mu))); |
101 | int sls_guard_var __attribute__((guarded_var)) = 0; |
102 | int sls_guardby_var __attribute__((guarded_by(sls_mu))) = 0; |
103 | |
104 | bool getBool(); |
105 | |
106 | class MutexWrapper { |
107 | public: |
108 | Mutex mu; |
109 | int x __attribute__((guarded_by(mu))); |
110 | void MyLock() __attribute__((exclusive_lock_function(mu))); |
111 | }; |
112 | |
113 | #else |
114 | |
115 | MutexWrapper sls_mw; |
116 | |
117 | void sls_fun_0() { |
118 | sls_mw.mu.Lock(); |
119 | sls_mw.x = 5; |
120 | sls_mw.mu.Unlock(); |
121 | } |
122 | |
123 | void sls_fun_2() { |
124 | sls_mu.Lock(); |
125 | int x = sls_guard_var; |
126 | sls_mu.Unlock(); |
127 | } |
128 | |
129 | void sls_fun_3() { |
130 | sls_mu.Lock(); |
131 | sls_guard_var = 2; |
132 | sls_mu.Unlock(); |
133 | } |
134 | |
135 | void sls_fun_4() { |
136 | sls_mu2.Lock(); |
137 | sls_guard_var = 2; |
138 | sls_mu2.Unlock(); |
139 | } |
140 | |
141 | void sls_fun_5() { |
142 | sls_mu.Lock(); |
143 | int x = sls_guardby_var; |
144 | sls_mu.Unlock(); |
145 | } |
146 | |
147 | void sls_fun_6() { |
148 | sls_mu.Lock(); |
149 | sls_guardby_var = 2; |
150 | sls_mu.Unlock(); |
151 | } |
152 | |
153 | void sls_fun_7() { |
154 | sls_mu.Lock(); |
155 | sls_mu2.Lock(); |
156 | sls_mu2.Unlock(); |
157 | sls_mu.Unlock(); |
158 | } |
159 | |
160 | void sls_fun_8() { |
161 | sls_mu.Lock(); |
162 | if (getBool()) |
163 | sls_mu.Unlock(); |
164 | else |
165 | sls_mu.Unlock(); |
166 | } |
167 | |
168 | void sls_fun_9() { |
169 | if (getBool()) |
170 | sls_mu.Lock(); |
171 | else |
172 | sls_mu.Lock(); |
173 | sls_mu.Unlock(); |
174 | } |
175 | |
176 | void sls_fun_good_6() { |
177 | if (getBool()) { |
178 | sls_mu.Lock(); |
179 | } else { |
180 | if (getBool()) { |
181 | getBool(); // EMPTY |
182 | } else { |
183 | getBool(); // EMPTY |
184 | } |
185 | sls_mu.Lock(); |
186 | } |
187 | sls_mu.Unlock(); |
188 | } |
189 | |
190 | void sls_fun_good_7() { |
191 | sls_mu.Lock(); |
192 | while (getBool()) { |
193 | sls_mu.Unlock(); |
194 | if (getBool()) { |
195 | if (getBool()) { |
196 | sls_mu.Lock(); |
197 | continue; |
198 | } |
199 | } |
200 | sls_mu.Lock(); |
201 | } |
202 | sls_mu.Unlock(); |
203 | } |
204 | |
205 | void sls_fun_good_8() { |
206 | sls_mw.MyLock(); |
207 | sls_mw.mu.Unlock(); |
208 | } |
209 | |
210 | void sls_fun_bad_1() { |
211 | sls_mu.Unlock(); // \ |
212 | // expected-warning{{releasing mutex 'sls_mu' that was not held}} |
213 | } |
214 | |
215 | void sls_fun_bad_2() { |
216 | sls_mu.Lock(); // expected-note{{mutex acquired here}} |
217 | sls_mu.Lock(); // \ |
218 | // expected-warning{{acquiring mutex 'sls_mu' that is already held}} |
219 | sls_mu.Unlock(); |
220 | } |
221 | |
222 | void sls_fun_bad_3() { |
223 | sls_mu.Lock(); // expected-note {{mutex acquired here}} |
224 | } // expected-warning{{mutex 'sls_mu' is still held at the end of function}} |
225 | |
226 | void sls_fun_bad_4() { |
227 | if (getBool()) |
228 | sls_mu.Lock(); // expected-note{{mutex acquired here}} |
229 | else |
230 | sls_mu2.Lock(); // expected-note{{mutex acquired here}} |
231 | } // expected-warning{{mutex 'sls_mu' is not held on every path through here}} \ |
232 | // expected-warning{{mutex 'sls_mu2' is not held on every path through here}} |
233 | |
234 | void sls_fun_bad_5() { |
235 | sls_mu.Lock(); // expected-note {{mutex acquired here}} |
236 | if (getBool()) |
237 | sls_mu.Unlock(); |
238 | } // expected-warning{{mutex 'sls_mu' is not held on every path through here}} |
239 | |
240 | void sls_fun_bad_6() { |
241 | if (getBool()) { |
242 | sls_mu.Lock(); // expected-note {{mutex acquired here}} |
243 | } else { |
244 | if (getBool()) { |
245 | getBool(); // EMPTY |
246 | } else { |
247 | getBool(); // EMPTY |
248 | } |
249 | } |
250 | sls_mu.Unlock(); // \ |
251 | expected-warning{{mutex 'sls_mu' is not held on every path through here}}\ |
252 | expected-warning{{releasing mutex 'sls_mu' that was not held}} |
253 | } |
254 | |
255 | void sls_fun_bad_7() { |
256 | sls_mu.Lock(); |
257 | while (getBool()) { |
258 | sls_mu.Unlock(); |
259 | if (getBool()) { |
260 | if (getBool()) { |
261 | continue; // \ |
262 | expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}} |
263 | } |
264 | } |
265 | sls_mu.Lock(); // expected-note {{mutex acquired here}} |
266 | } |
267 | sls_mu.Unlock(); |
268 | } |
269 | |
270 | void sls_fun_bad_8() { |
271 | sls_mu.Lock(); // expected-note{{mutex acquired here}} |
272 | |
273 | do { |
274 | sls_mu.Unlock(); // expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}} |
275 | } while (getBool()); |
276 | } |
277 | |
278 | void sls_fun_bad_9() { |
279 | do { |
280 | sls_mu.Lock(); // \ |
281 | // expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}} \ |
282 | // expected-note{{mutex acquired here}} |
283 | } while (getBool()); |
284 | sls_mu.Unlock(); |
285 | } |
286 | |
287 | void sls_fun_bad_10() { |
288 | sls_mu.Lock(); // expected-note 2{{mutex acquired here}} |
289 | while(getBool()) { // expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}} |
290 | sls_mu.Unlock(); |
291 | } |
292 | } // expected-warning{{mutex 'sls_mu' is still held at the end of function}} |
293 | |
294 | void sls_fun_bad_11() { |
295 | while (getBool()) { // \ |
296 | expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}} |
297 | sls_mu.Lock(); // expected-note {{mutex acquired here}} |
298 | } |
299 | sls_mu.Unlock(); // \ |
300 | // expected-warning{{releasing mutex 'sls_mu' that was not held}} |
301 | } |
302 | |
303 | void sls_fun_bad_12() { |
304 | sls_mu.Lock(); // expected-note {{mutex acquired here}} |
305 | while (getBool()) { |
306 | sls_mu.Unlock(); |
307 | if (getBool()) { |
308 | if (getBool()) { |
309 | break; // expected-warning{{mutex 'sls_mu' is not held on every path through here}} |
310 | } |
311 | } |
312 | sls_mu.Lock(); |
313 | } |
314 | sls_mu.Unlock(); |
315 | } |
316 | |
317 | #endif |
318 | |