sub-optimal IO#read after IO#getc
---------------------------------
Key: JRUBY-3721
URL: http://jira.codehaus.org/browse/JRUBY-3721
Project: JRuby
Issue Type: Improvement
Affects Versions: JRuby 1.3RC2
Reporter: Wayne Meissner
Assignee: Thomas E Enebo
When given a code snippet like:
{code}
f = File.new("/tmp/test.rb", "r")
first = f.getc
rest = f.read
{code}
The getc will fill the ChannelStream buffer, then copy one char out. The
following read calls ChannelStream#readall(), which invalidates the buffer,
then re-reads the contents of the file.
Instead of invalidating the buffer and re-reading, readall() could make use of
the buffered data, and avoid a couple of seeks and a read.
This might make a difference for small files, if a similar read sequence is
used.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://jira.codehaus.org/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
