// Test this without pch.
// RUN: %clang_cc1 -include %s -fsyntax-only -verify -Wthread-safety -std=c++11 %s
// Test with pch.
// RUN: %clang_cc1 -emit-pch -o %t %s -std=c++11
// RUN: %clang_cc1 -include-pch %t -fsyntax-only -verify -Wthread-safety -std=c++11 %s
#ifndef HEADER
#define HEADER
#define LOCKABLE __attribute__ ((lockable))
#define SCOPED_LOCKABLE __attribute__ ((scoped_lockable))
#define GUARDED_BY(x) __attribute__ ((guarded_by(x)))
#define GUARDED_VAR __attribute__ ((guarded_var))
#define PT_GUARDED_BY(x) __attribute__ ((pt_guarded_by(x)))
#define PT_GUARDED_VAR __attribute__ ((pt_guarded_var))
#define ACQUIRED_AFTER(...) __attribute__ ((acquired_after(__VA_ARGS__)))
#define ACQUIRED_BEFORE(...) __attribute__ ((acquired_before(__VA_ARGS__)))
#define EXCLUSIVE_LOCK_FUNCTION(...) __attribute__ ((exclusive_lock_function(__VA_ARGS__)))
#define SHARED_LOCK_FUNCTION(...) __attribute__ ((shared_lock_function(__VA_ARGS__)))
#define EXCLUSIVE_TRYLOCK_FUNCTION(...) __attribute__ ((exclusive_trylock_function(__VA_ARGS__)))
#define SHARED_TRYLOCK_FUNCTION(...) __attribute__ ((shared_trylock_function(__VA_ARGS__)))
#define UNLOCK_FUNCTION(...) __attribute__ ((unlock_function(__VA_ARGS__)))
#define LOCK_RETURNED(x) __attribute__ ((lock_returned(x)))
#define LOCKS_EXCLUDED(...) __attribute__ ((locks_excluded(__VA_ARGS__)))
#define EXCLUSIVE_LOCKS_REQUIRED(...) \
__attribute__ ((exclusive_locks_required(__VA_ARGS__)))
#define SHARED_LOCKS_REQUIRED(...) \
__attribute__ ((shared_locks_required(__VA_ARGS__)))
#define NO_THREAD_SAFETY_ANALYSIS __attribute__ ((no_thread_safety_analysis))
class __attribute__((lockable)) Mutex {
public:
void Lock() __attribute__((exclusive_lock_function));
void ReaderLock() __attribute__((shared_lock_function));
void Unlock() __attribute__((unlock_function));
bool TryLock() __attribute__((exclusive_trylock_function(true)));
bool ReaderTryLock() __attribute__((shared_trylock_function(true)));
void LockWhen(const int &cond) __attribute__((exclusive_lock_function));
};
class __attribute__((scoped_lockable)) MutexLock {
public:
MutexLock(Mutex *mu) __attribute__((exclusive_lock_function(mu)));
~MutexLock() __attribute__((unlock_function));
};
class __attribute__((scoped_lockable)) ReaderMutexLock {
public:
ReaderMutexLock(Mutex *mu) __attribute__((exclusive_lock_function(mu)));
~ReaderMutexLock() __attribute__((unlock_function));
};
class SCOPED_LOCKABLE ReleasableMutexLock {
public:
ReleasableMutexLock(Mutex *mu) EXCLUSIVE_LOCK_FUNCTION(mu);
~ReleasableMutexLock() UNLOCK_FUNCTION();
void Release() UNLOCK_FUNCTION();
};
// The universal lock, written "*", allows checking to be selectively turned
// off for a particular piece of code.
void beginNoWarnOnReads() SHARED_LOCK_FUNCTION("*");
void endNoWarnOnReads() UNLOCK_FUNCTION("*");
void beginNoWarnOnWrites() EXCLUSIVE_LOCK_FUNCTION("*");
void endNoWarnOnWrites() UNLOCK_FUNCTION("*");
// For testing handling of smart pointers.
template<class T>
class SmartPtr {
public:
SmartPtr(T* p) : ptr_(p) { }
SmartPtr(const SmartPtr<T>& p) : ptr_(p.ptr_) { }
~SmartPtr();
T* get() const { return ptr_; }
T* operator->() const { return ptr_; }
T& operator*() const { return *ptr_; }
private:
T* ptr_;
};
// For testing destructor calls and cleanup.
class MyString {
public:
MyString(const char* s);
~MyString();
};
Mutex sls_mu;
Mutex sls_mu2 __attribute__((acquired_after(sls_mu)));
int sls_guard_var __attribute__((guarded_var)) = 0;
int sls_guardby_var __attribute__((guarded_by(sls_mu))) = 0;
bool getBool();
class MutexWrapper {
public:
Mutex mu;
int x __attribute__((guarded_by(mu)));
void MyLock() __attribute__((exclusive_lock_function(mu)));
};
#else
MutexWrapper sls_mw;
void sls_fun_0() {
sls_mw.mu.Lock();
sls_mw.x = 5;
sls_mw.mu.Unlock();
}
void sls_fun_2() {
sls_mu.Lock();
int x = sls_guard_var;
sls_mu.Unlock();
}
void sls_fun_3() {
sls_mu.Lock();
sls_guard_var = 2;
sls_mu.Unlock();
}
void sls_fun_4() {
sls_mu2.Lock();
sls_guard_var = 2;
sls_mu2.Unlock();
}
void sls_fun_5() {
sls_mu.Lock();
int x = sls_guardby_var;
sls_mu.Unlock();
}
void sls_fun_6() {
sls_mu.Lock();
sls_guardby_var = 2;
sls_mu.Unlock();
}
void sls_fun_7() {
sls_mu.Lock();
sls_mu2.Lock();
sls_mu2.Unlock();
sls_mu.Unlock();
}
void sls_fun_8() {
sls_mu.Lock();
if (getBool())
sls_mu.Unlock();
else
sls_mu.Unlock();
}
void sls_fun_9() {
if (getBool())
sls_mu.Lock();
else
sls_mu.Lock();
sls_mu.Unlock();
}
void sls_fun_good_6() {
if (getBool()) {
sls_mu.Lock();
} else {
if (getBool()) {
getBool(); // EMPTY
} else {
getBool(); // EMPTY
}
sls_mu.Lock();
}
sls_mu.Unlock();
}
void sls_fun_good_7() {
sls_mu.Lock();
while (getBool()) {
sls_mu.Unlock();
if (getBool()) {
if (getBool()) {
sls_mu.Lock();
continue;
}
}
sls_mu.Lock();
}
sls_mu.Unlock();
}
void sls_fun_good_8() {
sls_mw.MyLock();
sls_mw.mu.Unlock();
}
void sls_fun_bad_1() {
sls_mu.Unlock(); // \
// expected-warning{{releasing mutex 'sls_mu' that was not held}}
}
void sls_fun_bad_2() {
sls_mu.Lock(); // expected-note{{mutex acquired here}}
sls_mu.Lock(); // \
// expected-warning{{acquiring mutex 'sls_mu' that is already held}}
sls_mu.Unlock();
}
void sls_fun_bad_3() {
sls_mu.Lock(); // expected-note {{mutex acquired here}}
} // expected-warning{{mutex 'sls_mu' is still held at the end of function}}
void sls_fun_bad_4() {
if (getBool())
sls_mu.Lock(); // expected-note{{mutex acquired here}}
else
sls_mu2.Lock(); // expected-note{{mutex acquired here}}
} // expected-warning{{mutex 'sls_mu' is not held on every path through here}} \
// expected-warning{{mutex 'sls_mu2' is not held on every path through here}}
void sls_fun_bad_5() {
sls_mu.Lock(); // expected-note {{mutex acquired here}}
if (getBool())
sls_mu.Unlock();
} // expected-warning{{mutex 'sls_mu' is not held on every path through here}}
void sls_fun_bad_6() {
if (getBool()) {
sls_mu.Lock(); // expected-note {{mutex acquired here}}
} else {
if (getBool()) {
getBool(); // EMPTY
} else {
getBool(); // EMPTY
}
}
sls_mu.Unlock(); // \
expected-warning{{mutex 'sls_mu' is not held on every path through here}}\
expected-warning{{releasing mutex 'sls_mu' that was not held}}
}
void sls_fun_bad_7() {
sls_mu.Lock();
while (getBool()) { // \
expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}}
sls_mu.Unlock();
if (getBool()) {
if (getBool()) {
continue;
}
}
sls_mu.Lock(); // expected-note {{mutex acquired here}}
}
sls_mu.Unlock();
}
void sls_fun_bad_8() {
sls_mu.Lock(); // expected-note{{mutex acquired here}}
do {
sls_mu.Unlock(); // expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}}
} while (getBool());
}
void sls_fun_bad_9() {
do {
sls_mu.Lock(); // \
// expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}} \
// expected-note{{mutex acquired here}}
} while (getBool());
sls_mu.Unlock();
}
void sls_fun_bad_10() {
sls_mu.Lock(); // expected-note 2{{mutex acquired here}}
while(getBool()) { // expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}}
sls_mu.Unlock();
}
} // expected-warning{{mutex 'sls_mu' is still held at the end of function}}
void sls_fun_bad_11() {
while (getBool()) { // \
expected-warning{{expecting mutex 'sls_mu' to be held at start of each loop}}
sls_mu.Lock(); // expected-note {{mutex acquired here}}
}
sls_mu.Unlock(); // \
// expected-warning{{releasing mutex 'sls_mu' that was not held}}
}
void sls_fun_bad_12() {
sls_mu.Lock(); // expected-note {{mutex acquired here}}
while (getBool()) {
sls_mu.Unlock();
if (getBool()) {
if (getBool()) {
break;
}
}
sls_mu.Lock();
}
sls_mu.Unlock(); // \
expected-warning{{mutex 'sls_mu' is not held on every path through here}} \
expected-warning{{releasing mutex 'sls_mu' that was not held}}
}
#endif
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