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Go Systems Programming

You're reading from   Go Systems Programming Master Linux and Unix system level programming with Go

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Product type Paperback
Published in Sep 2017
Publisher Packt
ISBN-13 9781787125643
Length 466 pages
Edition 1st 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 (13) Chapters Close

Preface 1. Getting Started with Go and Unix Systems Programming FREE CHAPTER 2. Writing Programs in Go 3. Advanced Go Features 4. Go Packages, Algorithms, and Data Structures 5. Files and Directories 6. File Input and Output 7. Working with System Files 8. Processes and Signals 9. Goroutines - Basic Features 10. Goroutines - Advanced Features 11. Writing Web Applications in Go 12. Network Programming

The dWC.go utility revisited

In this section, we will change the implementation of the dWC.go utility developed in the previous chapter.

The first version of the program will use a buffered channel whereas the second version of the program will use shared memory for keeping the counts for each file you process.

Using a buffered channel

The name of this implementation will be WCbuffered.go and will be presented in five parts.

The first part of the utility is the following:

package main 
 
import ( 
   "bufio" 
   "fmt" 
   "io" 
   "os" 
   "path/filepath" 
   "regexp" 
) 
 
type File struct { 
   Filename   string 
   Lines      int 
   Words      int 
   Characters...
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