122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wthread-safety -Wthread-safety-beta -Wthread-safety-negative -fcxx-exceptions %s
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// FIXME: should also run %clang_cc1 -fsyntax-only -verify -Wthread-safety -std=c++11 -Wc++98-compat %s
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// FIXME: should also run %clang_cc1 -fsyntax-only -verify -Wthread-safety %s
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#define LOCKABLE __attribute__ ((lockable))
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#define SCOPED_LOCKABLE __attribute__ ((scoped_lockable))
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#define GUARDED_BY(x) __attribute__ ((guarded_by(x)))
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#define GUARDED_VAR __attribute__ ((guarded_var))
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#define PT_GUARDED_BY(x) __attribute__ ((pt_guarded_by(x)))
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#define PT_GUARDED_VAR __attribute__ ((pt_guarded_var))
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#define ACQUIRED_AFTER(...) __attribute__ ((acquired_after(__VA_ARGS__)))
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#define ACQUIRED_BEFORE(...) __attribute__ ((acquired_before(__VA_ARGS__)))
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#define EXCLUSIVE_LOCK_FUNCTION(...) __attribute__ ((exclusive_lock_function(__VA_ARGS__)))
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#define SHARED_LOCK_FUNCTION(...) __attribute__ ((shared_lock_function(__VA_ARGS__)))
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#define ASSERT_EXCLUSIVE_LOCK(...) __attribute__ ((assert_exclusive_lock(__VA_ARGS__)))
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#define ASSERT_SHARED_LOCK(...) __attribute__ ((assert_shared_lock(__VA_ARGS__)))
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#define EXCLUSIVE_TRYLOCK_FUNCTION(...) __attribute__ ((exclusive_trylock_function(__VA_ARGS__)))
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#define SHARED_TRYLOCK_FUNCTION(...) __attribute__ ((shared_trylock_function(__VA_ARGS__)))
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#define UNLOCK_FUNCTION(...) __attribute__ ((unlock_function(__VA_ARGS__)))
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#define LOCK_RETURNED(x) __attribute__ ((lock_returned(x)))
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#define LOCKS_EXCLUDED(...) __attribute__ ((locks_excluded(__VA_ARGS__)))
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#define EXCLUSIVE_LOCKS_REQUIRED(...) \
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__attribute__ ((exclusive_locks_required(__VA_ARGS__)))
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#define SHARED_LOCKS_REQUIRED(...) \
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__attribute__ ((shared_locks_required(__VA_ARGS__)))
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#define NO_THREAD_SAFETY_ANALYSIS __attribute__ ((no_thread_safety_analysis))
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class __attribute__((lockable)) Mutex {
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public:
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void Lock() __attribute__((exclusive_lock_function));
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void ReaderLock() __attribute__((shared_lock_function));
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void Unlock() __attribute__((unlock_function));
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bool TryLock() __attribute__((exclusive_trylock_function(true)));
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bool ReaderTryLock() __attribute__((shared_trylock_function(true)));
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void LockWhen(const int &cond) __attribute__((exclusive_lock_function));
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// for negative capabilities
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const Mutex& operator!() const { return *this; }
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void AssertHeld() ASSERT_EXCLUSIVE_LOCK();
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void AssertReaderHeld() ASSERT_SHARED_LOCK();
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};
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namespace SimpleTest {
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class Bar {
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Mutex mu;
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int a GUARDED_BY(mu);
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public:
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void baz() EXCLUSIVE_LOCKS_REQUIRED(!mu) {
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mu.Lock();
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a = 0;
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mu.Unlock();
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}
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};
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class Foo {
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Mutex mu;
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int a GUARDED_BY(mu);
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public:
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void foo() {
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mu.Lock(); // expected-warning {{acquiring mutex 'mu' requires negative capability '!mu'}}
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baz(); // expected-warning {{cannot call function 'baz' while mutex 'mu' is held}}
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bar();
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mu.Unlock();
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}
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void bar() {
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baz(); // expected-warning {{calling function 'baz' requires holding '!mu'}}
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}
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void baz() EXCLUSIVE_LOCKS_REQUIRED(!mu) {
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mu.Lock();
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a = 0;
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mu.Unlock();
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}
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void test() {
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Bar b;
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b.baz(); // no warning -- in different class.
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}
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void test2() {
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mu.Lock(); // expected-warning {{acquiring mutex 'mu' requires negative capability '!mu'}}
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a = 0;
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mu.Unlock();
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baz(); // no warning -- !mu in set.
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}
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void test3() EXCLUSIVE_LOCKS_REQUIRED(!mu) {
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mu.Lock();
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a = 0;
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mu.Unlock();
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baz(); // no warning -- !mu in set.
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}
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};
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} // end namespace SimpleTest
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namespace DoubleAttribute {
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struct Foo {
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Mutex &mutex();
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};
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template <typename A>
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class TemplateClass {
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template <typename B>
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static void Function(Foo *F)
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EXCLUSIVE_LOCKS_REQUIRED(F->mutex()) UNLOCK_FUNCTION(F->mutex()) {}
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};
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void test() { TemplateClass<int> TC; }
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} // end namespace DoubleAttribute
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