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Priority ceiling protocol
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In [[real-time computing]], the '''priority ceiling protocol''' is a synchronization protocol for [[resource (computer science)|shared resource]]s to avoid unbounded [[priority inversion]] and mutual [[Deadlock (computer science)|deadlock]] due to wrong nesting of [[critical section]]s. In this protocol each resource is assigned a priority ceiling, which is a [[:wikt:priority|priority]] equal to the highest priority of any [[task (computers)|task]] which may lock the resource. The protocol works by temporarily raising the priorities of tasks in certain situations, thus it requires a [[Scheduling (computing)|scheduler]] that supports [[dynamic priority scheduling]].<ref> {{cite web | last = Renwick | first = Kyle | authorlink = | last2 = Renwick | first2 = Bill | title = How to use priority inheritance | publisher = embedded.com | date = May 18, 2004 | url = http://www.embedded.com/design/configurable-systems/4024970/How-to-use-priority-inheritance | accessdate = November 11, 2014}}</ref>
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