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dotnet framework : Finding a resource leak in the background thread...
I am developing on VS2005 SP1. I have a batch process that is running
in the background that is increasing the handle count of the app and never decrements it. Here is the code that starts the thread: ThreadStart threadDelegate = new ThreadStart(ProcessFileList); this.webUpdateThread = new Thread(threadDelegate); this.webUpdateThread.Start(); The call to start increases the handle count by 4 and it never goes down. This all happens in a class called WebUpdate which is the container for the thread. The class does contain one AutoResetEvent that is closed in WebUpdate.Dispose() method and two (2) events handlers. When the thread is finished one of the event handlers is called to tell the main thread to clean up the WebUpdate class. After the clean up, which is both calling WebUpdate.Dispose() and setting it to null, GC.Collect() is called and the handle count is still 4 higher then when it all began. I have checked the handle count right before the end of the thread and it is 5 higher then when everything started, after WebUpdate.Dispose() is called it is back to 4 higher. What am I missing?
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On Tue, 18 Mar 2008 17:29:39 -0700, Cartoper <cartoper@gmail.com> wrote: > I am developing on VS2005 SP1. I have a batch process that is running > in the background that is increasing the handle count of the app and > never decrements it. [...] Why are you reposting this question, in a completely different newsgroup? This sort of multi-posting is a bad idea, especially since your question
On Mar 18, 9:00=A0pm, "Peter Duniho" <NpOeStPe...@nnowslpianmk.com>
[quoted text, click to view] wrote: > On Tue, 18 Mar 2008 17:29:39 -0700, Cartoper <carto...@gmail.com> wrote: > > I am developing on VS2005 SP1. =A0I have a batch process that is running= > > in the background that is increasing the handle count of the app and > > never decrements it. [...] > > Why are you reposting this question, in a completely different newsgroup? = =A0 > This sort of multi-posting is a bad idea, especially since your question = =A0 > is already being addressed in the C# newsgroup. =A0Please don't do that. Wll, because there are a TON of newsgroups out there and I know that folks always read all of them. Maybe, just maybe there is a VB.Net or C++/CLI programmer that knows the answer that reads this forum but not the C# forum. It all sort of goes back to the concept of: Don't put
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On Wed, 19 Mar 2008 05:18:42 -0700, Cartoper <cartoper@gmail.com> wrote: > Wll, because there are a TON of newsgroups out there and I know that > folks always read all of them. Maybe, just maybe there is a VB.Net or > C++/CLI programmer that knows the answer that reads this forum but not > the C# forum. It all sort of goes back to the concept of: Don't put > all your eggs in one basket. Well, you're misusing the concept. If I want to know whether it's better to use an acetylene torch or MIG welder to replace the muffler on my car, the fact is that there are lots of people reading all sorts of unrelated newsgroups (like the C# or .NET Framework newsgroups) who might actually know the answer to that question. The best chance for me to get someone who knows the answer to the question is to post the question to every newsgroup I can find. But that doesn't mean that's an acceptable use of the newsgroups. The fact is, there are not "a TON of newsgroups" in which your question is relevant. It's also not true that of the very small number of newsgroups where the question might be relevant, different people are reading those newsgroups. So when you multipost, you just wind up making many of the same people read your question over and over. Frankly, the question wasn't really on-topic in the C# newsgroup, but rather is more relevant here in the general-purpose Framework newsgroup. But in no case would a question that's on-topic in the C# newsgroup also be on-topic in the C++/CLI newsgroup or a VB.NET newsgroup. If you think it is, that's a very good sign it's not on-topic in _any_ of those newsgroups and it would be much better for you to find the one newsgroup in which it is on-topic. Inasmuch as the C# newsgroup winds up catching a lot of the Framework questions when posted in the context of a C# program, then if you're using C# it might make sense to include that newsgroup. But even then, you should only include the post as a cross-post. Posting as a multi-post, as you've done here, means that multiple people will be investing their time and energy trying to answer a question that may have already been answered elsewhere. You're wasting people's time when you multi-post, and that's disrespectful.
On Mar 19, 2:55=A0pm, "Peter Duniho" <NpOeStPe...@nnowslpianmk.com>
[quoted text, click to view] wrote: > On Wed, 19 Mar 2008 05:18:42 -0700, Cartoper <carto...@gmail.com> wrote: > > Wll, because there are a TON of newsgroups out there and I know that > > folks always read all of them. =A0Maybe, just maybe there is a VB.Net or= > > C++/CLI programmer that knows the answer that reads this forum but not > > the C# forum. =A0It all sort of goes back to the concept of: Don't put > > all your eggs in one basket. > > Well, you're misusing the concept. =A0If I want to know whether it's bette= r =A0 > to use an acetylene torch or MIG welder to replace the muffler on my car, = =A0 > the fact is that there are lots of people reading all sorts of unrelated = =A0 > newsgroups (like the C# or .NET Framework newsgroups) who might actually = =A0 > know the answer to that question. =A0The best chance for me to get someone= =A0 > who knows the answer to the question is to post the question to every =A0 > newsgroup I can find. > > But that doesn't mean that's an acceptable use of the newsgroups. > > The fact is, there are not "a TON of newsgroups" in which your question is= =A0 > relevant. =A0It's also not true that of the very small number of newsgroup= s =A0 > where the question might be relevant, different people are reading those = =A0 > newsgroups. =A0So when you multipost, you just wind up making many of the = =A0 > same people read your question over and over. > > Frankly, the question wasn't really on-topic in the C# newsgroup, but =A0 > rather is more relevant here in the general-purpose Framework newsgroup. = =A0 > But in no case would a question that's on-topic in the C# newsgroup also = =A0 > be on-topic in the C++/CLI newsgroup or a VB.NET newsgroup. =A0If you thin= k =A0 > it is, that's a very good sign it's not on-topic in _any_ of those =A0 > newsgroups and it would be much better for you to find the one newsgroup = =A0 > in which it is on-topic. > > Inasmuch as the C# newsgroup winds up catching a lot of the Framework =A0 > questions when posted in the context of a C# program, then if you're using= =A0 > C# it might make sense to include that newsgroup. =A0But even then, you = =A0 > should only include the post as a cross-post. =A0Posting as a multi-post, = as =A0 > you've done here, means that multiple people will be investing their time = =A0 > and energy trying to answer a question that may have already been answered= =A0 > elsewhere. > > You're wasting people's time when you multi-post, and that's disrespectful= .. > > Pete This is ment to be rhetorical: If this is such a waste of your time,
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On Wed, 19 Mar 2008 16:33:53 -0700, Cartoper <cartoper@gmail.com> wrote: > [...] > This is ment to be rhetorical: If this is such a waste of your time, > why spend so much time replying? The waste of my time is you multi-posting. It may also be a waste of my time to try to educate you, but I remain hopeful that you could learn something. If not, so be it...at least it is my choice to waste my time that way, not yours.
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Cartoper wrote: > On Mar 18, 9:00 pm, "Peter Duniho" <NpOeStPe...@nnowslpianmk.com> > wrote: >> On Tue, 18 Mar 2008 17:29:39 -0700, Cartoper <carto...@gmail.com> wrote: >>> I am developing on VS2005 SP1. I have a batch process that is running >>> in the background that is increasing the handle count of the app and >>> never decrements it. [...] >> Why are you reposting this question, in a completely different newsgroup? >> This sort of multi-posting is a bad idea, especially since your question >> is already being addressed in the C# newsgroup. Please don't do that. > > Wll, because there are a TON of newsgroups out there and I know that > folks always read all of them. Maybe, just maybe there is a VB.Net or > C++/CLI programmer that knows the answer that reads this forum but not > the C# forum. It all sort of goes back to the concept of: Don't put > all your eggs in one basket. The problem is that a lot of us *do* read all of those newsgroups, or a great deal of them at least. Having to post "I already answered this in ng X" in X - 1 newsgroups to save the rest some time and join up discussions gets old fast. This is a cooperative effort, here -- your "putting your eggs in all baskets" strategy effectively means that your time is more valuable than the rest of us. Not a good way to gain friends & influence people. Don't post X messages in X newsgroups (multiposting). If you must address more than one newsgroup, post one message to X newsgroups simultaneously and set Followup-To (crossposting). I've heard it said that you can't do this with Google, I have no idea if it's true, but it's hardly a good excuse in any case -- use a real newsreader and one of the hundreds of free servers out there. If you truly have no clue which newsgroup could be appropriate, then *ask*. People will be more than happy to direct you. Posting your question in one newsgroup that turns out to be inappropriate is usually no disaster either. Spamming as many newsgroups as possible will just antagonize people. The "suppose what the world would look like if everybody did this" guideline may be useful, here. We'd effectively just have one big, unreadable newsgroup for everything. --
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