+1 > On Feb 15, 2018, at 6:42 AM, Alan Bateman <alan.bate...@oracle.com> wrote: > > On 19/12/2017 11:06, Alan Bateman wrote: >> I've been going through the fields in java.lang.Thread and I'm wondering if >> this field can be removed: >> >> /* Whether or not to single_step this thread. */ >> private boolean single_step; >> >> This field was used in the original Classic VM (pre-OpenJDK history). It >> doesn't appear to be used in the HotSpot VM. >> >> Does anyone know of any reason to keep it? Are there other VMs using it by >> any chance? > No one screamed so I'd like to go ahead and remove this field. I've created > JDK-8193818 to track it, the change (below) is trivial. > > -Alan > > > --- a/src/java.base/share/classes/java/lang/Thread.java > +++ b/src/java.base/share/classes/java/lang/Thread.java > @@ -1,5 +1,5 @@ > /* > - * Copyright (c) 1994, 2017, Oracle and/or its affiliates. All rights > reserved. > + * Copyright (c) 1994, 2018, Oracle and/or its affiliates. All rights > reserved. > * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. > * > * This code is free software; you can redistribute it and/or modify it > @@ -150,9 +150,6 @@ > private Thread threadQ; > private long eetop; > > - /* Whether or not to single_step this thread. */ > - private boolean single_step; > - > /* Whether or not the thread is a daemon thread. */ > private boolean daemon = false;
<http://oracle.com/us/design/oracle-email-sig-198324.gif> <http://oracle.com/us/design/oracle-email-sig-198324.gif> <http://oracle.com/us/design/oracle-email-sig-198324.gif> <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037 Oracle Java Engineering 1 Network Drive Burlington, MA 01803 lance.ander...@oracle.com <mailto:lance.ander...@oracle.com>
