nearby: snapshot as of cl/296436629

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I2cf5bf225b76f4c1541954651f3a7544a14e0cec

cpp/platform/impl/default/default_lock.h

@@ -0,0 +1,29 @@
+#ifndef PLATFORM_IMPL_DEFAULT_DEFAULT_LOCK_H_
+#define PLATFORM_IMPL_DEFAULT_DEFAULT_LOCK_H_
+
+#include <pthread.h>
+
+#include "platform/api/lock.h"
+
+namespace location {
+namespace nearby {
+
+class DefaultLock : public Lock {
+ public:
+  DefaultLock();
+  ~DefaultLock() override;
+
+  void lock() override;
+  void unlock() override;
+
+ private:
+  friend class DefaultConditionVariable;
+
+  pthread_mutexattr_t attr_;
+  pthread_mutex_t mutex_;
+};
+
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_IMPL_DEFAULT_DEFAULT_LOCK_H_