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Mastering Go – Third Edition

You're reading from   Mastering Go – Third Edition Harness the power of Go to build professional utilities and concurrent servers and services

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Product type Paperback
Published in Aug 2021
Publisher Packt
ISBN-13 9781801079310
Length 682 pages
Edition 3rd Edition
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Author (1):
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Mihalis Tsoukalos Mihalis Tsoukalos
Author Profile Icon Mihalis Tsoukalos
Mihalis Tsoukalos
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Table of Contents (17) Chapters Close

Preface 1. A Quick Introduction to Go 2. Basic Go Data Types FREE CHAPTER 3. Composite Data Types 4. Reflection and Interfaces 5. Go Packages and Functions 6. Telling a UNIX System What to Do 7. Go Concurrency 8. Building Web Services 9. Working with TCP/IP and WebSocket 10. Working with REST APIs 11. Code Testing and Profiling 12. Working with gRPC 13. Go Generics 14. Other Books You May Enjoy
15. Index
Appendix A – Go Garbage Collector

The Go scheduler

The OS kernel scheduler is responsible for the execution of the threads of a program. Similarly, the Go runtime has its own scheduler, which is responsible for the execution of the goroutines using a technique known as m:n scheduling, where m goroutines are executed using n OS threads using multiplexing. The Go scheduler is the Go component responsible for the way and the order in which the goroutines of a Go program get executed. This makes the Go scheduler a really important part of the Go programming language. The Go scheduler is executed as a goroutine.

Be aware that as the Go scheduler only deals with the goroutines of a single program, its operation is much simpler, cheaper, and faster than the operation of the kernel scheduler.

Go uses the fork-join concurrency model. The fork part of the model, which should not be confused with the fork(2) system call, states that a child branch can be created at any point of a program. Analogously...

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