llvm/third-party/benchmark/src/mutex.h

#ifndef BENCHMARK_MUTEX_H_
#define BENCHMARK_MUTEX_H_

#include <condition_variable>
#include <mutex>

#include "check.h"

// Enable thread safety attributes only with clang.
// The attributes can be safely erased when compiling with other compilers.
#if defined(HAVE_THREAD_SAFETY_ATTRIBUTES)
#define THREAD_ANNOTATION_ATTRIBUTE_(x) …
#else
#define THREAD_ANNOTATION_ATTRIBUTE_ …
#endif

#define CAPABILITY(x) …

#define SCOPED_CAPABILITY …

#define GUARDED_BY(x) …

#define PT_GUARDED_BY(x) …

#define ACQUIRED_BEFORE(...) …

#define ACQUIRED_AFTER(...) …

#define REQUIRES(...) …

#define REQUIRES_SHARED(...) …

#define ACQUIRE(...) …

#define ACQUIRE_SHARED(...) …

#define RELEASE(...) …

#define RELEASE_SHARED(...) …

#define TRY_ACQUIRE(...) …

#define TRY_ACQUIRE_SHARED(...) …

#define EXCLUDES(...) …

#define ASSERT_CAPABILITY(x) …

#define ASSERT_SHARED_CAPABILITY(x) …

#define RETURN_CAPABILITY(x) …

#define NO_THREAD_SAFETY_ANALYSIS …

namespace benchmark {

Condition;

// NOTE: Wrappers for std::mutex and std::unique_lock are provided so that
// we can annotate them with thread safety attributes and use the
// -Wthread-safety warning with clang. The standard library types cannot be
// used directly because they do not provide the required annotations.
class CAPABILITY("mutex") Mutex { … };

class SCOPED_CAPABILITY MutexLock { … };

class Barrier { … };

}  // end namespace benchmark

#endif  // BENCHMARK_MUTEX_H_