36th International Conference on Software Engineering (ICSE 2014), May 31 – June 7, 2014, Hyderabad, India

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Apps and Energy
Technical Research
Hall 3, Chair: Massimiliano Di Penta
APE: An Annotation Language and Middleware for Energy-Efficient Mobile Application Development
Nima Nikzad, Octav Chipara, and William G. Griswold
(University of California at San Diego, USA; University of Iowa, USA)
Publisher's Version
Preprint
Abstract: Energy-efficiency is a key concern in continuously-running mobile applications, such as those for health and context monitoring. Unfortunately, developers must implement complex and customized power-management policies for each application. This involves the use of complex primitives and writing error-prone multithreaded code to monitor hardware state. To address this problem, we present APE, an annotation language and middleware service that eases the development of energy-efficient Android applications. APE annotations are used to demarcate a power-hungry code segment whose execution is deferred until the device enters a state that minimizes the cost of that operation. The execution of power-hungry operations is coordinated across applications by the APE middleware. Several examples show the expressive power of our approach. A case study of using APE annotations in a real mobile sensing application shows that annotations can cleanly specify a power management policy and reduce the complexity of its implementation. An empirical evaluation of the middleware shows that APE introduces negligible overhead and equals hand-tuned code in energy savings, in this case achieving 63.4% energy savings compared to the case when there is no coordination.

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Time stamp: 2020-07-05T14:32:55+02:00