Examples
Let's try to create a go race condition. The simplest way to do it is by using multiple goroutines, and at least one of the goroutines must be written to a shared variable.
The following code demonstrates a simple way to create a go race condition.
- A goroutine.
- Another goroutine writes to the same variable by increasing its value.
Let's code and understand go race conditions practically!
package main
import (
"fmt"
"time"
)
func execute(codingninjas string) {
for i := 1; true; i++ {
fmt.Println(codingninjas, i)
time.Sleep(time.Millisecond * 100)
}
}
func main() {
execute("First Statement ")
execute("Second Statement ")
fmt.Println("program ends successfully")
}
Output
If you're using Windows, you're likely to see something similar on your screen. Unless you actively stop it or it runs out of system memory for execution, the aforementioned output will continue indefinitely.
Let us have a look at a different scenario.
package main
import (
"fmt"
"time"
)
func execute(codingninjas string) {
for i := 1; true; i++ {
fmt.Println(codingninjas, i)
time.Sleep(time.Millisecond * 100)
}
}
func main() {
// Simple and concurrent go program
go execute("First Statement ")
execute("Second Statement ")
fmt.Println("program ends successfully")
}
Output
If you're using Windows, you're likely to see something similar on your screen. Let's explore what happens if you create two goroutines in the same programme. When you establish a goroutine in Go, it usually speeds up the execution by delegating the waiting time to other tasks.
package main
import (
"fmt"
"time"
)
func execute(some string) {
for i := 1; true; i++ {
fmt.Println(some, i)
time.Sleep(time.Millisecond * 100)
}
}
func main() {
// Simple go program with concurrency
go execute("First")
go execute("Second")
fmt.Println("Program ends successfully")
}
Output
If you're using Windows, you're likely to see something similar on your screen. To wrap up our discussion, consider the following go race condition scenario:
package main
// one goroutine is the default goroutine
import (
"fmt"
"runtime"
"sync"
)
var wgIns sync.WaitGroup
func main() {
counter := 0
wgIns.Add(50)
for i := 0; i < 50; i++ {
go func() {
for j := 0; j < 50; j++ {
counter += 1
}
wgIns.Done()
}()
}
fmt.Println("The number of goroutines before wait = ", runtime.NumGoroutine())
wgIns.Wait()
fmt.Println("Counter value = ", counter)
fmt.Println("The number of goroutines after wait = ", runtime.NumGoroutine())
}
Output
The count of the number of goroutines before and after the wait is inconsistent. This inconsistency is caused by racial factors. In basic terms, imagine that you have one candy and two children rush up to you, claiming that they are both hungry. They end up battling over that one chocolate bar, and they sprint to acquire it. This is a competitive situation. The solution is to get another candy so that both of them can eat candy in peace. Similarly, we can increase resource allocation to prevent go race conditions from arising.
FAQs
1. What is Go?
Go, often known as Golang, is a Google-developed open-source, compiled, and statically typed computer language. It's designed to be simple, fast, readable, and efficient.
2. What is a race condition?
A race condition occurs when multiple threads try to access and modify the same data.
3. Is Google using Go internally?
Yes. Within Google, Go is widely utilized in production. The server that powers golang.org is a good example. It's just the godoc document server operating on Google App Engine in a production environment. Google's download service, dl.google.com, which serves Chrome binaries and other huge installable like apt-get packages, is a more notable example.
4. What other companies use Go?
Go is becoming more popular around the world, particularly in the cloud computing arena, but not entirely. Docker and Kubernetes are two significant Go-based cloud infrastructure projects, although there are many others. But it isn't only a cloud. But it's not simply a cloud. The Go Wiki has a page that lists some of the numerous companies that use Go, which is updated on a regular basis.
5. What IDEs(Integrated Development Environments) does Go support?
The Go project does not include a custom IDE, but the language and libraries have been designed to make it easy to analyze source code. As a consequence, most well-known editors and IDEs support Go well, either directly or through a plugin.
The list of well-known IDEs and editors that have good Go support available includes Emacs, Vim, VSCode, Atom, Eclipse, Sublime, IntelliJ (through a custom variant called Goland), and many more. Chances are, your favourite environment is a productive one for programming in Go.
Key Takeaways
In this article, we learned about the go race conditions in the Go programming language. We also demonstrated the Go race conditions using examples. We precisely understood the concept of the Go race conditions.
Apart from this, you can also expand your knowledge by referring to more articles on Go.
For more information, refer to Go.
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