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The C++ Standard Library

You're reading from   The C++ Standard Library What every professional C++ programmer should know about the C++ standard library.

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Product type Paperback
Published in Dec 2019
Publisher
ISBN-13 9781838981129
Length 251 pages
Edition 2nd Edition
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Author (1):
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Rainer Grimm Rainer Grimm
Author Profile Icon Rainer Grimm
Rainer Grimm
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Table of Contents (19) Chapters Close

Reader Testimonials FREE CHAPTER Introduction 1. The Standard Library 2. Utilities 3. Interface of All Containers 4. Sequential Containers 5. Associative Container 6. Adaptors for Containers 7. Iterators 8. Callable Units 9. Algorithms 10. Numeric 11. Strings 12. String Views 13. Regular Expressions 14. Input and Output Streams 15. Filesystem library 16. Multithreading Index

Tasks

In addition to threads, C++ has tasks to perform work asynchronously. Tasks need the header <future>. A task is parameterised with a work package and consists of the two associated components, a promise and a future. Both are connected via a data channel. The promise executes the work packages and puts the result in the data channel; the associated future picks up the result. Both communication endpoints can run in separate threads. What’s special is that the future can pick up the result at a later time. Therefore the calculation of the result by the promise is independent of the query of the result by the associated future.

Threads versus Tasks

Threads are very different from tasks.

For the communication between the creator thread and the created thread, you have to use a shared variable...

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