Search results
Results from the WOW.Com Content Network
In real-time computing, priority inheritance is a method for eliminating unbounded priority inversion.Using this programming method, a process scheduling algorithm increases the priority of a process (A) to the maximum priority of any other process waiting for any resource on which A has a resource lock (if it is higher than the original priority of A).
Real-time Java is a catch-all term for a combination of technologies that enables programmers to write programs that meet the demands of real-time systems in the Java programming language. Java's sophisticated memory management , native support for threading and concurrency, type safety , and relative simplicity have created a demand for its ...
A chat room could use the mediator pattern, or a system where many ‘clients’ each receive a message each time one of the other clients performs an action (for chat rooms, this would be when each person sends a message). In reality using the mediator pattern for a chat room would only be practical when used with remoting.
An example of usage of basic priority inheritance is related to the "Mars Pathfinder reset bug" [13] [14] which was fixed on Mars by changing the creation flags for the semaphore so as to enable the priority inheritance.
Real-Time Object-Oriented Modeling (ROOM) is a domain-specific language. ROOM was developed in the early 1990s for modeling real-time systems . [ 1 ] The initial focus was on telecommunications , even though ROOM can be applied to any event-driven real-time system.
In real-time computing, the priority ceiling protocol is a synchronization protocol for shared resources to avoid unbounded priority inversion and mutual deadlock due to wrong nesting of critical sections.
Prototype-based programming uses the process generalized objects, which can then be cloned and extended. Using fruit as an example, a "fruit" object would represent the properties and functionality of fruit in general. A "banana" object would be cloned from the "fruit" object and general properties specific to bananas would be appended.
This solution was used in Microsoft Windows [4] until it was replaced by AutoBoost a form of priority inheritance. [5] Avoid blocking Because priority inversion involves a low-priority task blocking a high-priority task, one way to avoid priority inversion is to avoid blocking, for example by using non-blocking algorithms such as read-copy-update.