tree 9501ce59f093f53f1df893a26985611b80c94c7d
parent 69a6925451f7f0ee0e9e444dda7679dac5d1ddb6
author Carlos Chinchilla <cachinchilla@google.com> 1695942790 +0000
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1695942790 +0000

pw_{hdlc,rpc}: Add CancellableReader

The new CancellableReader class wraps an interface used to receive RPC
packets. It guarantees that its read process can be stopped to avoid
blocking the join()-ing of the RpcClient's read and execute thread on
close() or shutting down.

There are specialized CancellableReader implementations for sockets and
serial implementations, and a helper function that helps decide which
type to use for a serial device depending on the OS. Otherwise, users
must provide their own implementation that guarantees the read process
can be stopped.

Bug: 294858483

Change-Id: I2b69c9c8a5bfa2f877724a49fb1450c5865d00dd
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/172051
Reviewed-by: Wyatt Hepler <hepler@google.com>
Commit-Queue: Carlos Chinchilla <cachinchilla@google.com>
Reviewed-by: Jonathon Reinhart <jrreinhart@google.com>
Pigweed-Auto-Submit: Carlos Chinchilla <cachinchilla@google.com>