Book Image

Mastering Go - Second Edition

By : Mihalis Tsoukalos
Book Image

Mastering Go - Second Edition

By: Mihalis Tsoukalos

Overview of this book

Often referred to (incorrectly) as Golang, Go is the high-performance systems language of the future. Mastering Go, Second Edition helps you become a productive expert Go programmer, building and improving on the groundbreaking first edition. Mastering Go, Second Edition shows how to put Go to work on real production systems. For programmers who already know the Go language basics, this book provides examples, patterns, and clear explanations to help you deeply understand Go’s capabilities and apply them in your programming work. The book covers the nuances of Go, with in-depth guides on types and structures, packages, concurrency, network programming, compiler design, optimization, and more. Each chapter ends with exercises and resources to fully embed your new knowledge. This second edition includes a completely new chapter on machine learning in Go, guiding you from the foundation statistics techniques through simple regression and clustering to classification, neural networks, and anomaly detection. Other chapters are expanded to cover using Go with Docker and Kubernetes, Git, WebAssembly, JSON, and more. If you take the Go programming language seriously, the second edition of this book is an essential guide on expert techniques.
Table of Contents (20 chapters)
Title Page

The go tool trace utility

The go tool trace utility is a tool for viewing trace files that can be generated in any one of the following three ways:

  • Using the runtime/trace package
  • Using the net/http/pprof package
  • Executing the go test -trace command

This section will use the first technique only. The output of the following command will greatly help you to understand what the Go execution tracer does:

    $ go doc runtime/trace
    package trace // import "runtime/trace"
    Package trace contains facilities for programs to generate traces for the Go
    execution tracer.
    Tracing runtime activities
    The execution trace captures a wide range of execution events such as
    goroutine creation/blocking/unblocking, syscall enter/exit/block, GC-related
    events, changes of heap size, processor start/stop, etc. A precise