Can Go Detect GoLand Debugger Attachment Like C#\'s `Debugger.IsAttached`?

Detecting GoLand Debugger Execution within a Program

In C#, a running program can identify whether it's under debugger supervision through the "System.Diagnostics.Debugger.IsAttached" method.

Can Go achieve a similar functionality? This is particularly desirable for disabling timeouts while code is being debugged.

Specifically, this question arises in the context of using the GoLand debugger.

Solution

Using Build Tags:

1. Create two Go source files: "isdelve/delve.go" and "isdelve/nodelve.go."

2. In "isdelve/delve.go," add the following build tag:

   // +build delve

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3. In "isdelve/nodelve.go," add the following build tag:

   // +build !delve

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4. Add a "package isdelve" declaration to both files and declare the "Enabled" constant:

   package isdelve
   
   const Enabled = true
   
   // or
   
   package isdelve
   
   const Enabled = false

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5. Create a third Go file, "a.go," which imports the "isdelve" package:

   package main
   
   import (
       "isdelve"
       "fmt"
   )
   
   func main() {
       fmt.Println("delve", isdelve.Enabled)
   }

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Configuring GoLand:

1. Open the "Run/Debug Configurations" window in GoLand.
2. Add "-tags=delve" to the "Go tool arguments" section.

Usage:

• When running "go run a.go" outside of GoLand, the program will report "delve false."
• When using dlv to debug, use "dlv debug --build-flags='-tags=delve' a.go." This will report "delve true."

Alternative:

Alternatively, delve's "set" command can manually set a variable after starting the debugger.

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