Delve

What is Delve?

Delve is a Go debugger, written primarily in Go.

Building

Currently, Delve requires the following patch, however this change is vendored until Go 1.4 lands, so the project is go get-able.

Features

• Attach to (trace) a running process
• Ability to launch a process and begin debugging it
• Set breakpoints
• Single step through a process
• Next through a process (step over / out of subroutines)
• Never retype commands, empty line defaults to previous command
• Readline integration

Usage

The debugger can be launched in three ways:

• Allow it to compile, run, and attach to a program:

  $ dlv -run
  

• Provide the name of the program you want to debug, and the debugger will launch it for you.

  $ dlv -proc path/to/program
  

• Provide the pid of a currently running process, and the debugger will attach and begin the session.

  $ sudo dlv -pid 44839
  

Once inside a debugging session, the following commands may be used:

• break - Set break point at the entry point of a function, or at a specific file/line. Example: break foo.go:13.

• continue - Run until breakpoint or program termination.

• step - Single step through program.

• next - Step over to next source line.

• print $var - Evaluate a variable.

Upcoming features

• Handle Gos multithreaded nature better
• In-scope variable evaluation
• In-scope variable setting
• Support for OS X

License

MIT