Go: Building Web Applications

Using the runtime package for granular stack traces

In an effort to capture stack traces directly, we can glean some helpful pieces of information from the built-in runtime package.

Specifically, Go provides a couple of tools to give us insight into the invocation and/or breakpoints of a goroutine. The following are the functions within the runtime package:

• runtime.Caller(): This returns information about the parent function of a goroutine
• runtime.Stack(): This allocates a buffer for the amount of data in a stack trace and then fills that with the trace
• runtime.NumGoroutine(): This returns the total number of open goroutines

We can utilize all three preceding tools to better describe the inner workings of any given goroutine and related errors.

Using ...