From the course: Go Standard Library
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Understanding wait groups and atomic operations - Go Tutorial
From the course: Go Standard Library
Understanding wait groups and atomic operations
- [Instructor] Let's learn more about wait groups and atomic operations in Go. These concepts help us manage multiple goroutines and ensure thread safe operations. Wait groups are synchronization primitives that allow us to wait for a collection of goroutines before moving forward. They act as a counter that helps track active goroutines. Here are the features of wait groups. The Add function allows you to increment the counter by a specified amount. The Done function decreases the counter by one. The Wait function blocks the counter until it becomes zero. Here's an example of how to implement a wait group. First, we initialize a wait group. In the Add function, we tell the wait group to expect two goroutines to complete. Next, we start two goroutines using the go keyword. Each goroutine uses defer Done to ensure the counter is decremented when the function completes even if an error occurs. The Wait function blocks the main thread until both goroutines are done, reducing the counter…
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