Hi,
Sherman pointed out that there was a path that could actually take a
minor performance hit from this patch,
which would be unacceptable. This version takes the minimal approach to
addressing this by adding back a
method operating on a char[], simplified for the specific usage case
(the exponent part of a %g double formatting):
http://cr.openjdk.java.net/~redestad/8050142/webrev.07/
This latest patch passes using the extended test coverage of
java.util.Formatter I've proposed in 8058887, see
http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-September/028849.html
/Claes
On 09/16/2014 03:15 PM, Claes Redestad wrote:
Brent, Marcus,
thank you for reviewing!
JCK 9 tests for api/java_util api/java_lang either pass or fail with
or without this patch on my machine.
Also reran relevant jtreg tests (jdk/test/java/util/Formatter
jdk/test/java/util/Formattable jdk/test/java/lang/String
jdk/test/java/lang/System)
Ok to fix nits offline without posting new webrev?
/Claes
On 09/16/2014 11:34 AM, Marcus Lagergren wrote:
I am reviewer and they look good to me too. ~30% better performance
for random indata- Do you pass the JCK? If so you have my blessing.
/M
On 16 Sep 2014, at 01:52, Brent Christian
<brent.christ...@oracle.com> wrote:
Hi, Claes
I've looked over the latest changes, and they look good to me. I
can sponsor this. Note that we need approval from a Reviewer.
One small nitpick from me:
2914:
If the text is left-justified, then aren't we padding on the right?
I would call this "padRight".
Thanks,
-Brent
On 7/14/14 3:41 PM, Claes Redestad wrote:
Sorry about that; maybe I should've renamed the field c to conv
instead,
but I think I need to be conservative now and will revert the name
changes.
New webrev: http://cr.openjdk.java.net/~redestad/8050142/webrev.3
Changing usage of given locale or any semantic change is really
out-of-scope here. There seems to be a few ancient bugs hanging around
which maybe someone should take a look at, e.g.,
https://bugs.openjdk.java.net/browse/JDK-5063466
/Claes
On 2014-07-14 20:05, Jason Mehrens wrote:
Claes,
Maybe change (or not):
-throw new UnknownFormatConversionException(String.valueOf(c));
+throw new UnknownFormatConversionException(String.valueOf(conv));
I haven't examined it too deeply but it seems odd that some of those
print methods don't use the given locale when converting case. That
is probably not a change for this issue.
Jason
----------------------------------------
Date: Mon, 14 Jul 2014 17:40:41 +0200
From: claes.redes...@oracle.com
To: core-libs-dev@openjdk.java.net
Subject: Re: RFR [9]: 8050142: Optimize java.util.Formatter
Hi,
final(?) webrev:
http://cr.openjdk.java.net/~redestad/8050142/webrev.2
Thanks in advance for reviews. I also need a volunteer to sponsor
this. :-)
/Claes
On 07/14/2014 04:21 PM, Claes Redestad wrote:
Yes, might be worth addressing just for correctness/readability.
/Claes
On 07/14/2014 03:02 PM, Ivan Gerasimov wrote:
A very minor one:
2704 if (Character.isUpperCase(conv))
2705 f.add(Flags.UPPERCASE);
2706 c = Character.toLowerCase(conv);
maybe
2704 if (Character.isUpperCase(conv)) {
2705 f.add(Flags.UPPERCASE);
2706 c = Character.toLowerCase(conv);
}
Sincerely yours,
Ivan
On 14.07.2014 16:23, Claes Redestad wrote:
Hi again,
updated webrev:
http://cr.openjdk.java.net/~redestad/8050142/webrev.1
changes:
- specify capacity on line 2931 as suggested by Andrej Golovnin
- exp.append("0") -> exp.append('0') on line 3781
- merged append+justify into appendJustified as suggested by
Peter
Levart
- replaced the reoccuring pattern of appending a number of zeros
into a call to trailingZeros
performance difference seemingly at noise levels in micros, but
bonus to readability and Formatter*.class-files are now a
total of
246 bytes smaller
/Claes
On 2014-07-14 13:29, Claes Redestad wrote:
Hi Peter,
On 2014-07-14 13:25, Peter Levart wrote:
On 07/14/2014 12:07 PM, Claes Redestad wrote:
Hi,
please review this patch which optimizes away some allocations
from java.util.Formatter and achieve 1.1-1.3x speedups of
micros
targetting String.format. See bug for more details.
webrev: http://cr.openjdk.java.net/~redestad/8050142/webrev.0
bug: https://bugs.openjdk.java.net/browse/JDK-8050142
Testing: JPRT, jtreg (java/lang/String, java/util/Formatter),
SPECjbb2013 and microbenchmarks
Thanks!
/Claes
Hi Claes,
Since justify() result is always appended to the resulting
Appendable, you could merge the functionality and eliminate
constructing intermediary StringBuilder altogether:
http://cr.openjdk.java.net/~plevart/jdk9-dev/Formatter/webrev.01/
Looks good, especially eliminating the need for two different
append methods. I'll update based on this and other suggestions.
/Claes
Regards, Peter
