On Tue, 19 Nov 2024 22:51:04 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
On Wed, 20 Nov 2024 10:36:13 GMT, Viktor Klang wrote:
>> resetThreadLocals looks good although. A discussion point is whether reset
>> should be done for all FJP instances, not just the common pool but not this
>> PR.
>
> Thanks Alan. Yes, I think it should be considered to do it for all FJP
>
On Tue, 19 Nov 2024 19:12:29 GMT, Doug Lea wrote:
>> src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 4082:
>>
>>> 4080: AccessController.doPrivileged(new PrivilegedAction<>() {
>>> 4081: public ForkJoinPool run() {
>>> 4082:
On Wed, 20 Nov 2024 08:11:34 GMT, Alan Bateman wrote:
>> src/java.base/share/classes/java/util/concurrent/ForkJoinWorkerThread.java
>> line 247:
>>
>>> 245: = U.objectFieldOffset(Thread.class, "threadLocals");
>>> 246: private static final long INHERITABLETHREADLOCALS
>>> 247:
On Tue, 19 Nov 2024 16:57:05 GMT, Viktor Klang wrote:
>> Doug Lea has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Ensure InnocuousForkJoinWorkerThread usable with or without SecurityManager
>
> src/java.base/share/classes/java/util/concu
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Sun, 17 Nov 2024 15:33:02 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
On Tue, 19 Nov 2024 16:54:04 GMT, Viktor Klang wrote:
>> Doug Lea has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Ensure InnocuousForkJoinWorkerThread usable with or without SecurityManager
>
> src/java.base/share/classes/java/util/concu
On Tue, 19 Nov 2024 16:52:44 GMT, Viktor Klang wrote:
>> Doug Lea has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Ensure InnocuousForkJoinWorkerThread usable with or without SecurityManager
>
> src/java.base/share/classes/java/util/concu
On Tue, 19 Nov 2024 16:10:19 GMT, Viktor Klang wrote:
>> Doug Lea has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Ensure InnocuousForkJoinWorkerThread usable with or without SecurityManager
>
> src/java.base/share/classes/java/util/concu
On Sun, 17 Nov 2024 15:33:02 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Wed, 13 Nov 2024 08:55:19 GMT, Viktor Klang wrote:
>> Doug Lea has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Rename variable
>
> src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 2617:
>
>> 2615:
On Tue, 12 Nov 2024 21:48:54 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
On Tue, 12 Nov 2024 14:14:18 GMT, Viktor Klang wrote:
>> Doug Lea has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Address review comments
>
> src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1870:
>
>> 1868:
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Mon, 11 Nov 2024 16:39:47 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
On Mon, 11 Nov 2024 16:39:47 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Mon, 11 Nov 2024 16:01:08 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Sun, 10 Nov 2024 17:51:43 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Thu, 24 Oct 2024 20:41:46 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Fri, 18 Oct 2024 15:47:16 GMT, Viktor Klang wrote:
>> Doug Lea has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Better disinguish need for exhaustive scans
>
> src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 200
On Fri, 18 Oct 2024 15:18:12 GMT, Doug Lea wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce o
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overhead (leading to several changes that all of the same
On Wed, 16 Oct 2024 16:38:13 GMT, Viktor Klang wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> redu
On Fri, 18 Oct 2024 12:32:21 GMT, Doug Lea wrote:
>> src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1287:
>>
>>> 1285: if (!internal)
>>> 1286: unlockPhase();
>>> 1287: if ((room == 0 || U.getReference(a, pk) == null) && pool
>>>
On Fri, 18 Oct 2024 12:27:34 GMT, Doug Lea wrote:
>> src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1913:
>>
>>> 1911: if (!all)
>>> 1912: break;
>>> 1913: }
>>
>> Stylistically, it might be cleaner to do this:
>>
>> Sugg
On Wed, 16 Oct 2024 16:32:32 GMT, Viktor Klang wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> redu
On Mon, 14 Oct 2024 20:58:43 GMT, Doug Lea wrote:
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overh
On Mon, 14 Oct 2024 20:58:43 GMT, Doug Lea wrote:
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overh
On Mon, 14 Oct 2024 20:58:43 GMT, Doug Lea wrote:
> This addresses tendencies in previous update to increase fencing, scanning,
> and signalling that can increase contention, and slow down performance
> especially on ARM platforms. It also uses more ARM-friendly constructions to
> reduce overh
This addresses tendencies in previous update to increase fencing, scanning, and
signalling that can increase contention, and slow down performance especially
on ARM platforms. It also uses more ARM-friendly constructions to reduce
overhead (leading to several changes that all of the same form),
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