You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@commons.apache.org by "Stephen Colebourne (JIRA)" <ji...@apache.org> on 2006/12/29 14:51:25 UTC
[jira] Resolved: (IO-97) Trivial performance improvements to
ByteArrayOutputStream
[ http://issues.apache.org/jira/browse/IO-97?page=all ]
Stephen Colebourne resolved IO-97.
----------------------------------
Fix Version/s: 1.3
(was: 1.4)
Resolution: Fixed
Assignee: Stephen Colebourne
> Trivial performance improvements to ByteArrayOutputStream
> ---------------------------------------------------------
>
> Key: IO-97
> URL: http://issues.apache.org/jira/browse/IO-97
> Project: Commons IO
> Issue Type: Improvement
> Components: Streams/Writers
> Affects Versions: 1.2
> Reporter: Holger Hoffstätte
> Assigned To: Stephen Colebourne
> Fix For: 1.3
>
> Attachments: BAOS.patch
>
>
> Found a few trivial ways to improve performance in ByteArrayOutputStream by fast paths:
> - write(int) does not have to be synchronized
> - write(byte[]..) does not have to be synchronized as a whole either; it's enough to synchonize the code that follows the first paramter-checking if-then statement (so parameter checks can pop out quickly)
> - toByteArray() could just check if count == 0 and quickly return an empty static final byte[] instead of returning a new zero-sized one, doing useless System.arraycopy() etc.
> A somewhat more involved optimization would be to implement write(int) without the new byte[1] since just poking the byte into the right page is going to be much faster than what happens in write(byte[]..); I'll see if I can do a patch for that.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: commons-dev-unsubscribe@jakarta.apache.org
For additional commands, e-mail: commons-dev-help@jakarta.apache.org