Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.java.programmer > #24908

Cost of creating objects?

From Sebastian <news@seyweiler.dyndns.org>
Newsgroups comp.lang.java.programmer
Subject Cost of creating objects?
Date 2013-08-07 09:44 +0200
Organization albasani.net
Message-ID <ktstsp$59k$1@news.albasani.net> (permalink)

Show all headers | View raw


@Override
public int compare(AttrValue o1, AttrValue o2)
{
   Long ts1 = o1.getEffectiveSequenceNumber();  // ??
   Long ts2 = o2.getEffectiveSequenceNumber();  // ??
   return ts1.compareTo(ts2);
}

Would you expect a measureable impact of creating these
variables ts1, ts2, instead of "inlining" the calls to
getEffectiveSequenceNumber(). (Using JDK 6?)

How can I reason about this things, probably influenced by
JIT, without doing actually measurements, say as part of a
code inspection?

-- Sebastian

Back to comp.lang.java.programmer | Previous | NextNext in thread | Find similar | Unroll thread


Thread

Cost of creating objects? Sebastian <news@seyweiler.dyndns.org> - 2013-08-07 09:44 +0200
  Re: Cost of creating objects? Donkey Hottie <donkey@fredriksson.dy.fi> - 2013-08-07 13:02 +0300
    Re: Cost of creating objects? Sebastian <news@seyweiler.dyndns.org> - 2013-08-07 12:05 +0200
      Re: Cost of creating objects? Donkey Hottie <donkey@fredriksson.dy.fi> - 2013-08-07 14:08 +0300
      Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-07 08:08 -0400
      Re: Cost of creating objects? Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-08-07 20:14 -0700
        Re: Cost of creating objects? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-08-08 17:17 -0300
  Re: Cost of creating objects? Joerg Meier <joergmmeier@arcor.de> - 2013-08-07 12:37 +0200
  Re: Cost of creating objects? Sebastian <news@seyweiler.dyndns.org> - 2013-08-07 19:51 +0200
    Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-07 15:51 -0400
      Re: Cost of creating objects? Lew <lewbloch@gmail.com> - 2013-08-07 16:52 -0700
        Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-07 20:51 -0400
          Re: Cost of creating objects? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-08-08 11:24 +0300
            Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-08 10:07 +0100
              Re: Cost of creating objects? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-08-08 17:34 +0300
                Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-08 10:42 -0400
                Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-08 20:45 +0100
              Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-08 10:38 -0400
            Re: Cost of creating objects? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-08 10:13 -0400
    Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-07 20:28 -0400
      Re: Cost of creating objects? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-08-08 17:34 -0300
  Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-07 19:19 +0100
    Re: Cost of creating objects? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-08-07 19:24 +0100
    Re: Cost of creating objects? Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-08-07 20:03 -0700
      Re: Cost of creating objects? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-08-08 17:39 -0300
  Re: Cost of creating objects? Arne Vajhøj <arne@vajhoej.dk> - 2013-08-07 20:24 -0400

csiph-web