tree be6e52ce8d7e757ace92a96150d42c7a7d0a4f90
parent a8f40b3f4d73b4863d04b4ad6b0337d3a78f5eaa
author Ian Cottrell <iancottrell@google.com> 1553872402 -0400
committer Ian Cottrell <iancottrell@google.com> 1553889578 +0000

internal/lsp: decouple message processing from stream processing.

The means that the stream reader can move forward while a message is being processed.
This will significantly improve responsivness and cancellation handling, and also
allow message handlers to send messages themselves, reducing the need to spin up
new go routines inside handlers.
The flow control changes from blocking to failing when a server is busy, which removes
the main current cause of deadlock, but may break non deadlock cases that currently wait
if the queue is not sufficiently large.

Change-Id: Ia73eb049b38d0651344abdbf16c477a8ce1a6fd1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/170007
Reviewed-by: Rebecca Stambler <rstambler@golang.org>