Mutex Supervisor

Have you ever been stuck on a mutex deadlock without knowing what caused it? Well, I have.

This simple tool can wrap any sync.Mutex or sync.RWmutex with the same behavior, but it will verbosely log if any lock request doesn't get satisfied in a specified amount of time. The output log will contain stack trace of the timed-out request as well as the stack trace of any other active or pending RLock request on that mutex.

How to use

If you are just using sync.Mutex and sync.RWMutex, you can import this module instead of the sync module (aliasing it):

import sync "github.com/EdoaLive/muSupervisor"

If you prefer to not replace the sync module or use both differently, you can use it separately:

import "github.com/EdoaLive/muSupervisor"

var (
	mutex1 muSupervisor.Mutex
	mutex2 muSupervisor.RWMutex
)

Please, please, please. Use this tool only in debugging and testing. Not in production.

TODO

• Write a more exhaustive test (current is merely an example)
• Fix a condition in which the stack trace is not saved
• Improve comments and documentation