On Mon, 4 Jul 2022 12:19:27 GMT, David Holmes <dhol...@openjdk.org> wrote:
> > Let's say we've run shutdown so run all the hooks but not halted. Then > > someone calls exit(0). That seems to suggest the call will block > > indefinitely, which is neither desirable nor what was actually implemented. > > If the hook threads do not halt then the exiting thread (which holds the > lock) blocks forever in the join(). Any other call to exit blocks trying to > acquire the lock. That has always been the way this works - if hook threads > don't terminate then the VM doesn't (unless someone calls halt() directly). > That is one of the things the window you suggested be closed, allowed - a > call to exit(non-zero) could force a call to halt(). I think that isn't true. If a hook doesn't terminate then VM.shutdown doesn't get called, so the window never gets cracked opened to call halt directly. ------------- PR: https://git.openjdk.org/jdk/pull/9351
