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The authors argue that controlling energy allocation is an increasingly useful and important feature for operating systems, especially on mobile devices. They present two new low-level abstractions in the Cinder operating system, reserves and taps, which store and distribute energy for application use. They identify three key properties of control - isolation, delegation, and subdivision - and show how using these abstractions can achieve them. They also show how the architecture of the HiStar information-flow control kernel lends itself well to energy control.
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