January 2017
Intermediate to advanced
565 pages
13h 46m
English
Content preview from Clojure: High Performance JVM ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Executing tasks in parallel
The simultaneous execution of several computations is termed as parallelism. The use of parallelism tends to increase the overall performance of a computation, since the computation can be partitioned to execute on several cores or processors. Clojure has a couple of functions that can be used for the parallelization of a particular computation or task, and we will briefly examine them in this section.
Note
The following examples can be found in src/m_clj/c2/parallel.clj of the book's source code.
Suppose we have a function that pauses the current thread for some time and then returns a computed value, as depicted in Example 2.17:
(defn square-slowly [x] (Thread/sleep 2000) (* x x))
Example 2.17: A function that pauses the ...
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