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| // RUN: %clang_analyze_cc1 -analyzer-checker=alpha.unix.BlockInCriticalSection -std=c++11 -verify %s
void sleep(int x) {}
namespace std {
struct mutex {
void lock() {}
void unlock() {}
};
template<typename T>
struct lock_guard {
lock_guard<T>(std::mutex) {}
~lock_guard<T>() {}
};
template<typename T>
struct unique_lock {
unique_lock<T>(std::mutex) {}
~unique_lock<T>() {}
};
template<typename T>
struct not_real_lock {
not_real_lock<T>(std::mutex) {}
};
}
void getc() {}
void fgets() {}
void read() {}
void recv() {}
void pthread_mutex_lock() {}
void pthread_mutex_trylock() {}
void pthread_mutex_unlock() {}
void mtx_lock() {}
void mtx_timedlock() {}
void mtx_trylock() {}
void mtx_unlock() {}
void testBlockInCriticalSectionWithStdMutex() {
std::mutex m;
m.lock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
getc(); // expected-warning {{Call to blocking function 'getc' inside of critical section}}
fgets(); // expected-warning {{Call to blocking function 'fgets' inside of critical section}}
read(); // expected-warning {{Call to blocking function 'read' inside of critical section}}
recv(); // expected-warning {{Call to blocking function 'recv' inside of critical section}}
m.unlock();
}
void testBlockInCriticalSectionWithPthreadMutex() {
pthread_mutex_lock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
getc(); // expected-warning {{Call to blocking function 'getc' inside of critical section}}
fgets(); // expected-warning {{Call to blocking function 'fgets' inside of critical section}}
read(); // expected-warning {{Call to blocking function 'read' inside of critical section}}
recv(); // expected-warning {{Call to blocking function 'recv' inside of critical section}}
pthread_mutex_unlock();
pthread_mutex_trylock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
getc(); // expected-warning {{Call to blocking function 'getc' inside of critical section}}
fgets(); // expected-warning {{Call to blocking function 'fgets' inside of critical section}}
read(); // expected-warning {{Call to blocking function 'read' inside of critical section}}
recv(); // expected-warning {{Call to blocking function 'recv' inside of critical section}}
pthread_mutex_unlock();
}
void testBlockInCriticalSectionC11Locks() {
mtx_lock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
getc(); // expected-warning {{Call to blocking function 'getc' inside of critical section}}
fgets(); // expected-warning {{Call to blocking function 'fgets' inside of critical section}}
read(); // expected-warning {{Call to blocking function 'read' inside of critical section}}
recv(); // expected-warning {{Call to blocking function 'recv' inside of critical section}}
mtx_unlock();
mtx_timedlock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
getc(); // expected-warning {{Call to blocking function 'getc' inside of critical section}}
fgets(); // expected-warning {{Call to blocking function 'fgets' inside of critical section}}
read(); // expected-warning {{Call to blocking function 'read' inside of critical section}}
recv(); // expected-warning {{Call to blocking function 'recv' inside of critical section}}
mtx_unlock();
mtx_trylock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
getc(); // expected-warning {{Call to blocking function 'getc' inside of critical section}}
fgets(); // expected-warning {{Call to blocking function 'fgets' inside of critical section}}
read(); // expected-warning {{Call to blocking function 'read' inside of critical section}}
recv(); // expected-warning {{Call to blocking function 'recv' inside of critical section}}
mtx_unlock();
}
void testBlockInCriticalSectionWithNestedMutexes() {
std::mutex m, n, k;
m.lock();
n.lock();
k.lock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
k.unlock();
sleep(5); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
n.unlock();
sleep(3); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
m.unlock();
sleep(3); // no-warning
}
void f() {
sleep(1000); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
}
void testBlockInCriticalSectionInterProcedural() {
std::mutex m;
m.lock();
f();
m.unlock();
}
void testBlockInCriticalSectionUnexpectedUnlock() {
std::mutex m;
m.unlock();
sleep(1); // no-warning
m.lock();
sleep(1); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
}
void testBlockInCriticalSectionLockGuard() {
std::mutex g_mutex;
std::not_real_lock<std::mutex> not_real_lock(g_mutex);
sleep(1); // no-warning
std::lock_guard<std::mutex> lock(g_mutex);
sleep(1); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
}
void testBlockInCriticalSectionLockGuardNested() {
testBlockInCriticalSectionLockGuard();
sleep(1); // no-warning
}
void testBlockInCriticalSectionUniqueLock() {
std::mutex g_mutex;
std::not_real_lock<std::mutex> not_real_lock(g_mutex);
sleep(1); // no-warning
std::unique_lock<std::mutex> lock(g_mutex);
sleep(1); // expected-warning {{Call to blocking function 'sleep' inside of critical section}}
}
void testBlockInCriticalSectionUniqueLockNested() {
testBlockInCriticalSectionUniqueLock();
sleep(1); // no-warning
}
|