Detecting no-sleep energy bugs using reference counted variables.

Mobile devices have become pervasive in today's society. The range of their use has been constantly increasing, which requires more computing capability. As the computing capability of mobile devices grow, so does the need for effective power management. There has been some work on reducing the power consumption of mobile applications by detecting energy bugs. In this work, we address no-sleep energy bugs with respect to semaphore wakelocks in consideration of race conditions with synchronization using reaching definitions and parallel flow graphs. We demonstrate the approach through a case example.