On 08/06/2019 05:53, serguei.spit...@oracle.com wrote:
Hi Andrew,
It looks good to me.
Thank you for your investigation and taking care about this!
I think this one needs further analysis as changing listenMap to be a
CHM does not make this connector thread safe and doesn't address a
number of other places where the map is accessed without
synchronization. For example, startListening would need to be changed to
use `putIfAbsent`, stopListening would need to use `remove` rather than
get + remote. There are several others once you start looking at the
sub-classes, e.g. SocketListeningConnector.updateArgumentMapIfRequired.
At the API level, JDI does not require connectors to be thread safe. I
agree it is desirable for some of the connector implementations to be
thread safe, particularly ListeningConnectors as an obvious usage will
be for a listener thread to hand off a VirtualMachine to another thread.
Andrew - do you have cycles to investigate this further? I'm not opposed
to changing the map to be a CHM but I think it needs further work.
-Alan
