Monitors and Semaphores
نویسنده
چکیده
منابع مشابه
pmonpp: Pthread Monitor Preprocessor
Monitors have become an exceedingly important synchronization mechanism because they are a natural generalization of the object-oriented programming. A monitor construct encapsulates private data with public methods to operate on that data. Although the Pthread library contains dozens of functions for threading and synchronization, it does not provide direct support for the monitor. Students mu...
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Synchronization based on semaphores, monitors, or atomic actions is in general not visible through object types. Often we use unnecessary or even conflicting synchronization in clients and servers because of missing information. Process types – a kind of behavioral types – solve this problem so far only partially: Types specify synchronization required from clients, but they hide the servers’ s...
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We present a simple solution to the mutual exclusion problem with no lockout that uses weak binary semaphores. Previously, Morris [4] presented a solution to this problem that uses three binary semaphores and two variable-size shared variables. A simpler solution was given in [5], where just two semaphores and two shared singlebit variables are used. (In some earlier versions, an incorrect one-...
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Modern multiprocessor architectures have exacerbated problems of coordinating access to shared data, in particular as regards to the possibility of deadlock. For example semaphores, one of the most basic synchronization primitives, present difficulties. Djikstra defined semaphores to solve the problem of mutual exclusion. Practical implementation of the concept has, however, produced semaphores...
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Modern multiprocessor architectures have exacerbated problems of coordinating access to shared data, in particular as regards to the possibility of deadlock. For example semaphores, one of the most basic synchronization primitives, present difficulties. Djikstra defined semaphores to solve the problem of mutual exclusion. Practical implementation of the concept has, however, produced semaphores...
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