<!DOCTYPE html><html><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<br>
<br>
<div class="moz-cite-prefix">On 04/12/2023 12:41, David Holmes
wrote:<br>
</div>
<blockquote type="cite" cite="mid:72662e8e-342a-4812-9f5d-4002d7810dd9@oracle.com">On
1/12/2023 2:08 pm, Alex Menkov wrote:
<br>
<blockquote type="cite">On Thu, 30 Nov 2023 21:11:08 GMT, Chris
Plummer <a class="moz-txt-link-rfc2396E" href="mailto:cjplummer@openjdk.org"><cjplummer@openjdk.org></a> wrote:
<br>
<br>
<blockquote type="cite">I wasn't thinking in terms of the
scheduler somehow no longer references the virtual thread, but
instead the program no longer referencing the scheduler (and
also not referencing the virtual thread).
<br>
</blockquote>
<br>
AFAIU unfinished unmounted virtual threads are referenced from
other objects (they are parked on), so they can't be unreachable
even is the application is not referencing them and the
scheduler.
<br>
</blockquote>
<br>
There is (or was - there may be a property that affects this:
trackAllThreads?) a scenario where a VT might park on a
synchronization object which is not referenced from any other
thread. The VT can never be unparked, and the sync object and the
VT are reachable only from either other and so both can be GC'd.</blockquote>
<br>
That's right, the door is not closed to introducing <span style="color: rgb(29, 28, 29); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-style: normal; font-variant-ligatures: common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">ephemeral
threads in the future. Right now, virtual threads created directly
with the Thread API remaining strongly reachable once started
until they terminate. Virtual threads created in other containers
(e.g. a thread-per-task ExecutorService) are kept reachable by the
container.<br>
<br>
-Alan<br>
</span>
</body>
</html>