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Chirantan Ekbote 906b43c5c9 cros_async: Make raw waker Send + Sync 
std::task::Waker unconditionally implements Send + Sync so the raw waker
that we provide also must implement those traits.  Switch to using an
Arc<AtomicBool>.

This also fixes an inconsistency where the waker was defined to be an
Rc<Cell<bool>> but all the vtable functions were treating as an
Rc<AtomicBool>.

To reduce the vtable boilerplate use the ArcWake trait from the futures
crate.

BUG=none
TEST=unit tests

Change-Id: I3870e4d7f6ce0de9f6ac3313a2f4474ae29018b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2287079
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Tested-by: Chirantan Ekbote <chirantan@chromium.org>
Commit-Queue: Chirantan Ekbote <chirantan@chromium.org>
2020-07-15 09:28:23 +00:00
..
src cros_async: Make raw waker Send + Sync 2020-07-15 09:28:23 +00:00
Cargo.toml cros_async: Make raw waker Send + Sync 2020-07-15 09:28:23 +00:00