From shade at redhat.com  Thu Aug 13 12:24:03 2020
From: shade at redhat.com (Aleksey Shipilev)
Date: Thu, 13 Aug 2020 14:24:03 +0200
Subject: JOL 0.12
Message-ID: <4ad4b0d0-d9aa-43e1-8569-0c640b0f8812@redhat.com>

Hi,

JOL 0.11 is released and available on Maven Central. This is the maintenance release, and it
brings the following changes.

 *) GraphWalker performance improvements spliced from JEP-8249196 performance work. This provides
substantial throughput and footprint boosts when traversing both small and large object graphs.
  7902731: Optimize GraphWalker::walk
  7902732: Cache instance sizes during GraphWalker::walk
  7902743: Use hand-rolled IdentityHashSet in GraphWalker

 *) Hotspot layouter does not hold its weight anymore, given JDK 15 field layout improvements. It
was simplified to ease maintenance. The downside: it requires some adjustments for dependent code
that uses HotspotLayouter for anything (unlikely, but still).
  7902728: Simplify Hotspot simulation layouter

 *) (Internal) Test infrastructure improvements:
  7902729: Test different JVM modes automatically
  7902727: JOL fails HotspotLayouterRealTest on JDK 15

Enjoy!

-- 
Thanks,
-Aleksey


From shade at redhat.com  Thu Aug 20 09:56:52 2020
From: shade at redhat.com (shade at redhat.com)
Date: Thu, 20 Aug 2020 09:56:52 +0000
Subject: hg: code-tools/jol: 2 new changesets
Message-ID: <202008200956.07K9uqe6007662@aojmv0008.oracle.com>

Changeset: 4ac769feae5b
Author:    shade
Date:      2020-08-20 11:56 +0200
URL:       https://hg.openjdk.java.net/code-tools/jol/rev/4ac769feae5b

7902753: GraphLayout should print the root description

! jol-core/src/main/java/org/openjdk/jol/info/GraphWalker.java

Changeset: 80821636a470
Author:    shade
Date:      2020-08-20 11:56 +0200
URL:       https://hg.openjdk.java.net/code-tools/jol/rev/80821636a470

7902585: Retry address snapshot if moves were detected

! jol-core/src/main/java/org/openjdk/jol/info/GraphLayout.java
! jol-core/src/main/java/org/openjdk/jol/info/GraphPathRecord.java


From shade at redhat.com  Mon Aug 24 17:15:19 2020
From: shade at redhat.com (shade at redhat.com)
Date: Mon, 24 Aug 2020 17:15:19 +0000
Subject: hg: code-tools/jol: 3 new changesets
Message-ID: <202008241715.07OHFSvC027845@aojmv0008.oracle.com>

Changeset: bb8651f3dc40
Author:    shade
Date:      2020-08-24 10:18 +0200
URL:       https://hg.openjdk.java.net/code-tools/jol/rev/bb8651f3dc40

7902756: Lazy address computation

! jol-core/src/main/java/org/openjdk/jol/info/GraphLayout.java
! jol-core/src/main/java/org/openjdk/jol/info/GraphPathRecord.java

Changeset: 7e70b935a49f
Author:    shade
Date:      2020-08-24 10:28 +0200
URL:       https://hg.openjdk.java.net/code-tools/jol/rev/7e70b935a49f

7902757: Do not cache toString in GraphPathRecord

! jol-core/src/main/java/org/openjdk/jol/info/GraphLayout.java
! jol-core/src/main/java/org/openjdk/jol/info/GraphPathRecord.java

Changeset: ab64ad22712f
Author:    shade
Date:      2020-08-24 10:29 +0200
URL:       https://hg.openjdk.java.net/code-tools/jol/rev/ab64ad22712f

7902758: Hide/finalize internal GraphPathRecords

! jol-core/src/main/java/org/openjdk/jol/info/ArrayGraphPathRecord.java
! jol-core/src/main/java/org/openjdk/jol/info/FieldGraphPathRecord.java
! jol-core/src/main/java/org/openjdk/jol/info/GraphPathRecord.java


From shade at redhat.com  Tue Aug 25 10:48:45 2020
From: shade at redhat.com (Aleksey Shipilev)
Date: Tue, 25 Aug 2020 12:48:45 +0200
Subject: JOL 0.13
Message-ID: <f662afe4-1b8e-f5a2-a351-1832575ed47f@redhat.com>

Hi,

JOL 0.13 is released and available on Maven Central. This is the maintenance release, and it
brings the following changes.

  *) Address handling is improved: the addresses are computed lazily when accessing the address 
snapshots (i.e. "externals", or other printable map); and if object moves were detected, the whole 
thing retries a few times until addresses are stable, or try count depletes:
   7902585: Retry address snapshot if moves were detected
   7902756: Lazy address computation

  *) UX bug: GraphLayout regressed earlier, it should have printed the root object descriptions:
   7902753: GraphLayout should print the root description

  *) UX bug: GraphLayout used to cache toString result, which is not actually correct. This also 
saves some allocation/memory footprint.
   7902757: Do not cache toString in GraphPathRecord

  *) Little API change:
   7902758: Hide/finalize internal GraphPathRecords

Enjoy!

-- 
Thanks,
-Aleksey