v3.2.0

Features

• Add multi-threading support to GrpcContext's run and poll functions if the context has been constructed with one of the new constructors and the provided concurrency_hint is greater than one. Note that just like with asio::io_context you still have to call GrpcContext::run/poll from the desired numbers of threads. Also note that agrpc::HealthCheckService is incompatible with the new multi-threaded GrpcContext.
• Add static_asserts to register_ functions that improve compilation error messages when providing an incompatible RPCHandler.
• Add support for custom allocators that use fancy pointers.

Performance

• The thread local memory pool will now grow up to a maximum of 127008 bytes. Allocations beyond that and individual allocations larger than 1024 byte will be served by std::allocator. Overaligned types no longer trigger a static assertion.
• register_callback_rpc_handler now uses the user-provided allocator to wait for notify_when_done.

Documentation

• Add gRPC client and server example that use the new multi-threaded GrpcContext.
• Add note that only one call to ServerRPC::wait_for_done may be outstanding at a time.

Chore

• No longer add standalone asio-grpc target when only building examples. All examples use Boost.Asio.