diff options
Diffstat (limited to 'src/google/protobuf/stubs/mutex.h')
-rw-r--r-- | src/google/protobuf/stubs/mutex.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/google/protobuf/stubs/mutex.h b/src/google/protobuf/stubs/mutex.h index b9b7d2e1..47edb7a3 100644 --- a/src/google/protobuf/stubs/mutex.h +++ b/src/google/protobuf/stubs/mutex.h @@ -34,6 +34,18 @@ #include <google/protobuf/stubs/macros.h> +// Define thread-safety annotations for use below, if we are building with +// Clang. +#if defined(__clang__) && !defined(SWIG) +#define GOOGLE_PROTOBUF_ACQUIRE(...) \ + __attribute__((acquire_capability(__VA_ARGS__))) +#define GOOGLE_PROTOBUF_RELEASE(...) \ + __attribute__((release_capability(__VA_ARGS__))) +#else +#define GOOGLE_PROTOBUF_ACQUIRE(...) +#define GOOGLE_PROTOBUF_RELEASE(...) +#endif + // =================================================================== // emulates google3/base/mutex.h namespace google { @@ -48,8 +60,8 @@ namespace internal { class LIBPROTOBUF_EXPORT WrappedMutex { public: WrappedMutex() = default; - void Lock() { mu_.lock(); } - void Unlock() { mu_.unlock(); } + void Lock() GOOGLE_PROTOBUF_ACQUIRE() { mu_.lock(); } + void Unlock() GOOGLE_PROTOBUF_RELEASE() { mu_.unlock(); } // Crash if this Mutex is not held exclusively by this thread. // May fail to crash when it should; will never crash when it should not. void AssertHeld() const {} @@ -123,8 +135,10 @@ using internal::ReaderMutexLock; using internal::WriterMutexLock; using internal::MutexLockMaybe; - } // namespace protobuf } // namespace google +#undef GOOGLE_PROTOBUF_ACQUIRE +#undef GOOGLE_PROTOBUF_RELEASE + #endif // GOOGLE_PROTOBUF_STUBS_MUTEX_H_ |