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Java 9: Building Robust Modular Applications
book

Java 9: Building Robust Modular Applications

by Dr. Edward Lavieri, Peter Verhas, Jason Lee
April 2018
Intermediate to advanced content levelIntermediate to advanced
910 pages
33h 21m
English
Packt Publishing
Content preview from Java 9: Building Robust Modular Applications

Spin-Wait Hints

With concurrency, we need to ensure that threads waiting to be executed actually get executed. The concept of spin-wait is a process that continually checks for a true condition. The aim of Java Enhancement Proposal 285 was to create an API that permits Java code to issue hints that a spin loop is currently being executed.

While this is not a feature that every Java developer will use, it can be useful for low-level programming. The hint system simply issues hints--indications, and performs no other actions. Justifications for adding these hints include the following assumptions:

  • A spin loop's action time can be improved when using a spin hint
  • Use of spin hints will reduce thread-to-thread latency
  • CPU power consumption will ...
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Publisher Resources

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