* Removes logging all the reader actions, and logs specific messages inside the reader_fsm instead
* Adds constructors to reader actions
* Makes reader_fsm use connection_state
* Refactors reader_fsm tests
* Moves exec_fsm action printing to test code
Data rotation in the read buffer creates latency, we know it
is preset but so far its magnitude was unknown. This PR adds
it as a new field to the usage struct. For example, the
test_conn_echo_stress outputs now
Commands sent: 780,002
Bytes sent: 32,670,085
Responses received: 780,001
Pushes received: 750,001
Bytes received (response): 3,210,147
Bytes received (push): 32,250,036
Bytes rotated: 3,109,190,184
In total approximately 34Mb are received but 3Gb are
rotated.
* Terminal cancellation in async_exec no longer tears down the connection when the cancelled request has been sent to the server.
* Adds support for partial cancellation in async_exec with the same semantics.
* In the context of the multiplexer, replaces tribool by consume_result to enhance readability and make values smaller
* Splits the multiplexer tests out of test_low_level_sync_sans_io into a separate test file
* Increases testing coverage for the multiplexer class
Entails no functional change.
async_exec now supports partial and total cancellation when the request is pending
Added docs on async_exec's cancellation support
Added detail::exec_fsm and macros for coroutine emulation
Requests are now removed from the multiplexer when an error is encountered
