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Real-Time Programming Languages - Operating Systems

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Priority Ceiling<br />

01<br />

02<br />

Pragma Locking_Policy(Ceiling_Locking);<br />

Protected object is pragma priority(...) ... ;<br />

Burns,<br />

Wellings<br />

Ch. 13.3<br />

Page 325<br />

Implements the “immediate ceiling protocol”<br />

●<br />

●<br />

The object ceiling priority must be maximum priority of<br />

any calling task<br />

the task executing a protected operation executes at<br />

the ceiling priority of the protected object<br />

WS 2013/14 <strong>Real</strong>-<strong>Time</strong> <strong>Systems</strong>, <strong>Real</strong>-<strong>Time</strong> Prog. <strong>Languages</strong> / Hermann Härtig 34

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