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Transactional monitors are proposed as an alternative to monitors based on mutual-exclusion synchronization for object-oriented programming languages. Transactional monitors have execution semantics similar to mutual-exclusion monitors but implement monitors as lightweight transactions that can be executed concurrently (or in parallel on multiprocessors). They alleviate many of the constraints...
The use of automatic memory management in object-oriented languages like Java is becoming widely accepted because of its software engineering benefits, its reduction of programming time and its safety aspects. Nevertheless, the complexity of garbage collection results in an important time cost for the virtual machine’s job. Until now, garbage collection strategies have focused on analyzing and adjusting...
Lock reservation, a powerful optimization for Java locks, is based on the observation that, in Java, each lock tends to be dominantly acquired and released by a specific thread. Reserving a lock for such a dominant thread allows the owner thread of the lock to acquire and release the lock without any atomic read-modify-write instructions. A recently proposed algorithm has embodied...
The use of class libraries increases programmer productivity by allowing programmers to focus on the functionality unique to their application. However, library classes are generally designed with some typical usage pattern in mind, and performance may be suboptimal if the actual usage differs. We present an approach for rewriting applications to use customized versions of library classes that are...
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