Go: How Does the Garbage Collector Mark the Memory?

Illustration created for “A Journey With Go”, made from the original Go Gopher, created by Renee French.

ℹ️ This article is based on Go 1.13. The notions about memory management discussed here are explained in my article “Go: Memory Management and Allocation.”

The Go garbage collector is responsible for collecting the memory that is not in use anymore. The implemented algorithm is a concurrent tri-color mark and sweep collector. In this article, we will see in detail the marking…