Project Loom VirtualThreads hang

[Robert Engels]


Alex,

You write:

> I won't go into detail, but the producers not synchronizing between themselves leads to hangs.


Can you explain? Im fairly certain the producers do valid synchronization. As I said, using native threads the code runs to completion fine  

Now that I understand the issue I was able to reproduce the issue very simply without any queues. See SpinTest posted to the project. The “starver” thread fails to make any progress - this should not be possible is Thread.yield() was fair. 

> On Dec 27, 2022, at 11:15 PM, Alex Otenko <oleksandr.otenko at gmail.com> wrote:
> I won't go into detail, but the producers not synchronizing between themselves leads to hangs.