Any package implementing FIFO mutex?

[ChrisLu]

"sync.Mutex" is not FIFO. Has any package implemented a dropping for FIFO mutex?

One similar solution is to use buffered channel, but it is limited by the buffer size, and requires non-trivial re-architecturing.

Chris

[David Finkel]

Not a drop-in replacement, but there is net/textproto.Pipeline. (intended for sequencing text-based network protocols going over a socket, but it's not too far off)

You'd call `Next()` to grab the sequence-handle and then call `p.StartRequest(id)` to grab the lock. Unlocking would be `p.EndRequest(id)`.

I think you can ignore the response-side for this use-case, but I'm not certain.

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[gbarr]

You could use golang.org/x/sync/semaphore NewWeighted(1) Aquire will return in order

Graham

[Chris Lu]

Thanks for sharing this gem!

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