Support Forums: Message List - Artima Article: "Myths of Memory Management" http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Sat, 25 May 2013 11:50:53 -0400 I agree that resource management http://www.theserverside.com/discussions/thread.tss?thread_id=36362 I agree that resource management is an important topic. When a resource is no longer needed, you need to know that resource is returned to the system. I know that in most cases, developers do not need to set a reference to null. There are a lot of...]]> Mon, 28 Nov 2011 21:47:38 -0500 Mon, 28 Nov 2011 21:47:38 -0500 Mon, 28 Nov 2011 21:47:38 -0500 Nov 28, 2011 PaulWeb 0 setting refs to null is code smell http://www.theserverside.com/discussions/thread.tss?thread_id=36362
array = new...]]> Mon, 19 Sep 2005 14:25:36 -0400 Mon, 19 Sep 2005 14:25:36 -0400 Mon, 19 Sep 2005 14:25:36 -0400 Sep 19, 2005 James Watson 0 setting refs to null is code smell http://www.theserverside.com/discussions/thread.tss?thread_id=36362 array = new int[300000];
That will compile as:
iconst 300000
inewarray
astore array

After the inewarray op, the stack will contain a reference to a new array of 300000 ints, and the...]]> Fri, 16 Sep 2005 22:33:57 -0400 Fri, 16 Sep 2005 22:33:57 -0400 Fri, 16 Sep 2005 22:33:57 -0400 Sep 16, 2005 Cameron Purdy 0 interesting http://www.theserverside.com/discussions/thread.tss?thread_id=36362 Here's an example of the issue:

    public static void main(String[] args)
    {
        int[] array =...]]> Fri, 16 Sep 2005 13:19:53 -0400 Fri, 16 Sep 2005 13:19:53 -0400 Fri, 16 Sep 2005 13:19:53 -0400 Sep 16, 2005 peter lin 0 setting refs to null is code smell http://www.theserverside.com/discussions/thread.tss?thread_id=36362
    public static void main(String[] args)
    {
        int[] array =...]]> Fri, 16 Sep 2005 12:43:03 -0400 Fri, 16 Sep 2005 12:43:03 -0400 Fri, 16 Sep 2005 12:43:03 -0400 Sep 16, 2005 James Watson 3 setting refs to null is code smell http://www.theserverside.com/discussions/thread.tss?thread_id=36362 If nulling is important as you insist, then the compiler should automatically do it after the loop. If the compiler doesn't do this, then maybe it isn't as important as you claim.
I amazes me that some poeple think that...]]> Fri, 16 Sep 2005 11:59:03 -0400 Fri, 16 Sep 2005 11:59:03 -0400 Fri, 16 Sep 2005 11:59:03 -0400 Sep 16, 2005 James Watson 4 setting refs to null is code smell http://www.theserverside.com/discussions/thread.tss?thread_id=36362 In a loop like this:while (condition) {    Object o = getBigObject();}it's normally fine to leave this alone. However, since o will generally be compiled out to a method level reference, it holds onto the...]]> Thu, 15 Sep 2005 16:31:13 -0400 Thu, 15 Sep 2005 16:31:13 -0400 Thu, 15 Sep 2005 16:31:13 -0400 Sep 15, 2005 Brian Miller 5 Artima Article: "Myths of Memory Management" http://www.theserverside.com/discussions/thread.tss?thread_id=36362 Am I missing something in your scenario ?
Yes. You need to also count the time it took to start the JVM, etc. That way he can win his argument ;-)

Peace,

Cameron Purdy
 Thu, 15 Sep 2005 07:34:29 -0400 Thu, 15 Sep 2005 07:34:29 -0400 Thu, 15 Sep 2005 07:34:29 -0400 Sep 15, 2005 Cameron Purdy 0 Artima Article: "Myths of Memory Management" http://www.theserverside.com/discussions/thread.tss?thread_id=36362 0.146s c++/stack, 0.270s c++/heap, 11.158s Java/modern JVM ;) and 6.67s GCJ/native.

Care to prove the benchmark's flawed? Care to try it yourself?]

I actually tried, using this...]]> Wed, 14 Sep 2005 14:28:15 -0400 Wed, 14 Sep 2005 14:28:15 -0400 Wed, 14 Sep 2005 14:28:15 -0400 Sep 14, 2005 Arkady Bari 1 99.999% sure it's not XStream http://www.theserverside.com/discussions/thread.tss?thread_id=36362
I used XStream to serialize the request into object and back out to XML.
I don`t know anything about XStream but it could hold a reference to the root node of the Objects. It could even put it in a static...]]> Wed, 14 Sep 2005 10:16:43 -0400 Wed, 14 Sep 2005 10:16:43 -0400 Wed, 14 Sep 2005 10:16:43 -0400 Sep 14, 2005 James Watson 0 Kodo http://www.theserverside.com/discussions/thread.tss?thread_id=36362
This website is a poor adverstisment for kodo. I`ll probably give it a thumbs down if someone asks about it.
James - that's definitely the wrong conclusion. You should talk to Floyd before deciding on whom to blame....]]> Wed, 14 Sep 2005 10:13:23 -0400 Wed, 14 Sep 2005 10:13:23 -0400 Wed, 14 Sep 2005 10:13:23 -0400 Sep 14, 2005 James Watson 0 99.999% sure it's not XStream http://www.theserverside.com/discussions/thread.tss?thread_id=36362
I used XStream to serialize the request into object and back out to XML.

I don`t know anything about XStream but it could hold a reference to the root node of the Objects. It could even put it in a static...]]> Wed, 14 Sep 2005 10:06:30 -0400 Wed, 14 Sep 2005 10:06:30 -0400 Wed, 14 Sep 2005 10:06:30 -0400 Sep 14, 2005 peter lin 1 Kodo http://www.theserverside.com/discussions/thread.tss?thread_id=36362 This website is a poor adverstisment for kodo. I`ll probably give it a thumbs down if someone asks about it.

James - that's definitely the wrong conclusion. You should talk to Floyd before deciding on whom to blame. I'll give...]]> Tue, 13 Sep 2005 16:15:45 -0400 Tue, 13 Sep 2005 16:15:45 -0400 Tue, 13 Sep 2005 16:15:45 -0400 Sep 13, 2005 Cameron Purdy 1 Kodo http://www.theserverside.com/discussions/thread.tss?thread_id=36362 Tue, 13 Sep 2005 16:00:48 -0400 Tue, 13 Sep 2005 16:00:48 -0400 Tue, 13 Sep 2005 16:00:48 -0400 Sep 13, 2005 James Watson 2 just guessing http://www.theserverside.com/discussions/thread.tss?thread_id=36362 I used XStream to serialize the request into object and back out to XML.
I don`t know anything about XStream but it could hold a reference to the root node of the Objects. It could even put it in a static reference. It could...]]> Tue, 13 Sep 2005 15:59:12 -0400 Tue, 13 Sep 2005 15:59:12 -0400 Tue, 13 Sep 2005 15:59:12 -0400 Sep 13, 2005 James Watson 5