commit 11f6745c3d563e5ed2669a4cf566ab3107b6e073
author Nigel Tao <nigeltao@golang.org> Fri Sep 11 18:48:25 2015 +1000
committer Nigel Tao <nigeltao@golang.org> Thu Sep 17 03:05:17 2015 +0000
tree 845eda1130c553b0eeedea0d67474d5a00b12556
parent 7a70f37cf6f284c1e7a21f6dec45688bd8662ae8

app: process input and other events concurrently, not consecutively.

Previously, we did:

for {
  processEvents() // Process any pending Android input events.
  select {        // Select Go events (channel send/receives).
  etc
  }
}

The problem was that if you were blocked on the select because there
were no incoming Go events, then you weren't reading new input events,
and the UI could block indefinitely.

After this CL, input events are processed in a dedicated goroutine,
where it's fine for

for C.AInputQueue_getEvent(q, &e) >= 0 { etc }

to block, and the main loop deals only with Go channels:

for {
  select {
  etc
  }
}

Change-Id: I8ec27a40e220b1d95a6b6fc14347a59833ccfdc8
Reviewed-on: https://go-review.googlesource.com/14500
Reviewed-by: David Crawshaw <crawshaw@golang.org>