1 files changed, 78 insertions, 0 deletions
diff --git a/lib/tsan/rtl/tsan_mutex.h b/lib/tsan/rtl/tsan_mutex.h
new file mode 100644
index 000000000000..5b22a4145185
--- /dev/null
+++ b/lib/tsan/rtl/tsan_mutex.h
@@ -0,0 +1,78 @@
+//===-- tsan_mutex.h --------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer (TSan), a race detector.
+//
+//===----------------------------------------------------------------------===//
+#ifndef TSAN_MUTEX_H
+#define TSAN_MUTEX_H
+
+#include "sanitizer_common/sanitizer_atomic.h"
+#include "sanitizer_common/sanitizer_mutex.h"
+#include "tsan_defs.h"
+
+namespace __tsan {
+
+enum MutexType {
+  MutexTypeInvalid,
+  MutexTypeTrace,
+  MutexTypeThreads,
+  MutexTypeReport,
+  MutexTypeSyncVar,
+  MutexTypeSyncTab,
+  MutexTypeSlab,
+  MutexTypeAnnotations,
+  MutexTypeAtExit,
+
+  // This must be the last.
+  MutexTypeCount,
+};
+
+class Mutex {
+ public:
+  explicit Mutex(MutexType type, StatType stat_type);
+  ~Mutex();
+
+  void Lock();
+  void Unlock();
+
+  void ReadLock();
+  void ReadUnlock();
+
+ private:
+  atomic_uintptr_t state_;
+#if TSAN_DEBUG
+  MutexType type_;
+#endif
+#if TSAN_COLLECT_STATS
+  StatType stat_type_;
+#endif
+
+  Mutex(const Mutex&);
+  void operator = (const Mutex&);
+};
+
+typedef GenericScopedLock<Mutex> Lock;
+typedef GenericScopedReadLock<Mutex> ReadLock;
+
+class DeadlockDetector {
+ public:
+  DeadlockDetector();
+  void Lock(MutexType t);
+  void Unlock(MutexType t);
+ private:
+  u64 seq_;
+  u64 locked_[MutexTypeCount];
+};
+
+void InitializeMutex();
+
+}  // namespace __tsan
+
+#endif  // TSAN_MUTEX_H