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• Android Handler postDelayed executes twice

  - by Ömer Baykal

  When I use Handler and its postDelayed method, the run() method executes twice. Below is part of my code. Handler deneme = new Handler(); deneme.postDelayed(new Runnable() { @Override public void run() { randomOyna(); } }, 1000); where randomOyna is the method public void randomOyna() { Log.v("sonOlarak", "çalisti"); } I monitor the LogCat and see that "çalisti" entry is written twice, so that randomOyna is called twice. The task is scheduled truely, but executes both after 1 sec and 2 secs. Can you help me???

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• Ruby on Rail using MYSQL database

  - by Joseph Misiti

  Hey guys, New to rails, trying to figure out something simple. Seems as though I cannot migrate a very simple mysql database using "rake db:migrate" command. Here is the issue: I know rails defaults to sqllite right now, but I need to use mysql for a series of reasons. Use the following commands rails -d mysql MyMoviesSQL cd MyMoviesSQL script/generate scaffold Movies title:string rating:integer rake db:migrate never get past here because i see the following error: in /Users/user/websites/MyMovieSQL) rake aborted! NoMethodError: undefined method `ord' for 0:Fixnum: SET NAMES 'utf8' (See full trace by running task with --trace) using trace XXXXX-macbook-pro:MyMovieSQL user$ rake db:migrate --trace (in /Users/user/websites/MyMovieSQL) ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute db:migrate rake aborted! NoMethodError: undefined method ord' for 0:Fixnum: SET NAMES 'utf8' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract_adapter.rb:219:inlog' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:323:in execute' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:599:inconfigure_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:594:in connect' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:203:ininitialize' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:75:in new' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:75:inmysql_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:in send' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:innew_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:245:in checkout_new_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:188:incheckout' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in loop' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:incheckout' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in synchronize' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:183:incheckout' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:98:in connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:326:inretrieve_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:123:in retrieve_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:115:inconnection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:435:in initialize' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:400:innew' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:400:in up' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:383:inmigrate' /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/tasks/databases.rake:116 /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in call' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:inexecute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:inexecute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in invoke_with_call_chain' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:insynchronize' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in invoke_with_call_chain' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:ininvoke' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in invoke_task' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:intop_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:intop_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:intop_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:instandard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/bin/rake:31 /usr/bin/rake:19:inload' /usr/bin/rake:19 no clue what is going on, if they want me to add a patch because the methods does not exist, please tell me which file to add it to, and also, how in the future do i figure out which file I need to patch (I see it looks like its a method in FixNum class) here is a patch to a problem that looks similar, but its a different version of ruby http://www.mail-archive.com/[email protected]/msg00250.html versions rails 2.3.5 ruby 1.8.6 gem list yeilds: * LOCAL GEMS * actionmailer (2.3.5, 1.3.6) actionpack (2.3.5, 1.13.6) actionwebservice (1.2.6) activerecord (2.3.5, 1.15.6) activeresource (2.3.5) activesupport (2.3.5, 1.4.4) acts_as_ferret (0.4.1) capistrano (2.0.0) cgi_multipart_eof_fix (2.5.0) daemons (1.0.9) dbi (0.4.3) deprecated (2.0.1) dnssd (0.6.0) fastthread (1.0.1) fcgi (0.8.7) ferret (0.11.4) gem_plugin (0.2.3) highline (1.2.9) hpricot (0.6) libxml-ruby (0.9.5, 0.3.8.4) mongrel (1.1.4) needle (1.3.0) net-sftp (1.1.0) net-ssh (1.1.2) rack (1.0.1) rails (2.3.5) rake (0.8.7, 0.7.3) RedCloth (3.0.4) ruby-openid (1.1.4) ruby-yadis (0.3.4) rubygems-update (1.3.6) rubynode (0.1.3) sqlite3-ruby (1.2.1) termios (0.9.4) thanks in advanced

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• wss4j: - Cannot find key for alias: monit

  - by feiroox

  Hi I'm using axis1.4 and wss4j. When I define in client-config.wsdd for WSDoAllSender and WSDoAllReceiver different signaturePropFiles where I have different key stores defined with different certificates, I'm able to have different certificates for sending and receiving. But when I use the same signaturePropFiles' with the same keystore. I get this message when I try to send a message: org.apache.ws.security.components.crypto.CryptoBase -- Cannot find key for alias: [monit] in keystore of type [jks] from provider [SUN version 1.5] with size [2] and aliases: {other, monit} - Error during Signature: ; nested exception is: org.apache.ws.security.WSSecurityException: Signature creation failed; nested exception is: java.lang.Exception: Cannot find key for alias: [monit] org.apache.ws.security.WSSecurityException: Error during Signature: ; nested exception is: org.apache.ws.security.WSSecurityException: Signature creation failed; nested exception is: java.lang.Exception: Cannot find key for alias: [monit] at org.apache.ws.security.action.SignatureAction.execute(SignatureAction.java:60) at org.apache.ws.security.handler.WSHandler.doSenderAction(WSHandler.java:202) at org.apache.ws.axis.security.WSDoAllSender.invoke(WSDoAllSender.java:168) at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32) at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118) at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83) at org.apache.axis.client.AxisClient.invoke(AxisClient.java:127) at org.apache.axis.client.Call.invokeEngine(Call.java:2784) at org.apache.axis.client.Call.invoke(Call.java:2767) at org.apache.axis.client.Call.invoke(Call.java:2443) at org.apache.axis.client.Call.invoke(Call.java:2366) at org.apache.axis.client.Call.invoke(Call.java:1812) at cz.ing.oopf.model.wsclient.ModelWebServiceSoapBindingStub.getStatus(ModelWebServiceSoapBindingStub.java:213) at cz.ing.oopf.wsgemonitor.monitor.util.MonitorUtil.checkStatus(MonitorUtil.java:18) at cz.ing.oopf.wsgemonitor.monitor.Test02WsMonitor.runTest(Test02WsMonitor.java:23) at cz.ing.oopf.wsgemonitor.Main.main(Main.java:75) Caused by: org.apache.ws.security.WSSecurityException: Signature creation failed; nested exception is: java.lang.Exception: Cannot find key for alias: [monit] at org.apache.ws.security.message.WSSecSignature.computeSignature(WSSecSignature.java:721) at org.apache.ws.security.message.WSSecSignature.build(WSSecSignature.java:780) at org.apache.ws.security.action.SignatureAction.execute(SignatureAction.java:57) ... 15 more Caused by: java.lang.Exception: Cannot find key for alias: [monit] at org.apache.ws.security.components.crypto.CryptoBase.getPrivateKey(CryptoBase.java:214) at org.apache.ws.security.message.WSSecSignature.computeSignature(WSSecSignature.java:713) ... 17 more How to have two certificates for wss4j in the same keystore? why it cannot find my certificate there when i have two certificates in one keystore. I have the same password for both certificates regarding PWCallback (CallbackHandler) My properties file: org.apache.ws.security.crypto.provider=org.apache.ws.security.components.crypto.Merlin org.apache.ws.security.crypto.merlin.keystore.type=jks org.apache.ws.security.crypto.merlin.keystore.password=keystore org.apache.ws.security.crypto.merlin.keystore.alias=monit org.apache.ws.security.crypto.merlin.alias.password=*** org.apache.ws.security.crypto.merlin.file=key.jks My client-config.wsdd: <deployment xmlns="http://xml.apache.org/axis/wsdd/" xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"> <globalConfiguration> <requestFlow> <handler name="WSSecurity" type="java:org.apache.ws.axis.security.WSDoAllSender"> <parameter name="user" value="monit"/> <parameter name="passwordCallbackClass" value="cz.ing.oopf.common.ws.PWCallback"/> <parameter name="action" value="Signature"/> <parameter name="signaturePropFile" value="monit.properties"/> <parameter name="signatureKeyIdentifier" value="DirectReference" /> <parameter name="mustUnderstand" value="0"/> </handler> <handler type="java:org.apache.axis.handlers.JWSHandler"> <parameter name="scope" value="session"/> </handler> <handler type="java:org.apache.axis.handlers.JWSHandler"> <parameter name="scope" value="request"/> <parameter name="extension" value=".jwr"/> </handler> </requestFlow> <responseFlow> <handler name="DoSecurityReceiver" type="java:org.apache.ws.axis.security.WSDoAllReceiver"> <parameter name="user" value="other"/> <parameter name="passwordCallbackClass" value="cz.ing.oopf.common.ws.PWCallback"/> <parameter name="action" value="Signature"/> <parameter name="signaturePropFile" value="other.properties"/> <parameter name="signatureKeyIdentifier" value="DirectReference" /> </handler> </responseFlow> </globalConfiguration> <transport name="http" pivot="java:org.apache.axis.transport.http.HTTPSender"> </transport> </deployment> Listing from keytool: keytool -keystore monit-key.jks -v -list Enter keystore password: Keystore type: JKS Keystore provider: SUN Your keystore contains 2 entries Alias name: other Creation date: Jul 22, 2009 Entry type: PrivateKeyEntry Certificate chain length: 1 Certificate[1]: .... Alias name: monit Creation date: Oct 19, 2009 Entry type: trustedCertEntry

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• C# process restart loop

  - by Andrej

  Hi, I'm trying to make a console app that would monitor some process and restart it if it exits. So, the console app is always on, it's only job is to restart some other process. I posted my code below.. it basically works but just for one process restart... I would appriciate any help!! Thanks in advance! { System.Diagnostics.Process[] p = System.Diagnostics.Process.GetProcessesByName(SOME_PROCESS); p[0].Exited += new EventHandler(Startup_Exited); while (!p[0].HasExited) { p[0].WaitForExit(); } //Application.Run(); } private static void Startup_Exited(object sender, EventArgs e) { System.Diagnostics.Process.Start(AGAIN_THAT_SAME_PROCESS); }

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• What's the Benefit of Multiple Monitors

  - by DaveDev

  It's become apparent to me that in Software Development it's not uncommon to have more than 1 monitor. We've been pushing for multiple monitors here (currently I have 1 19") but it's difficult to get the point across to the 'deciders' that there would be a benefit. They're only concerned with saving cents. So I thought I'd ask around and see what software developers with multiple monitors thought? What are the benefits? What are the costs? What is the ideal number of monitors for a software developer? Thanks

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• IMAP Idle Timeout

  - by Paul

  Lets say I am using IMAP IDLE to monitor changes in a mail folder. The IMAP spec says that IDLE connections should only stay alive for 30 minutes max, but it is recommended that a lower number of minutes is selected - say 20 minutes, then cancel the idle and restart. I am wondering what would happen if the mail contents changed between the idle canceling, and the new idle being created. An email could potentially be missed. Given that RECENT is a bit vague, this could lead to getting a message list before the old idle ends, and a new idle starts. But this is almost the same as polling every 20 minutes, and defeats some of the benefit of idle. Alternatively, a new idle session could be started prior to terminating the expiring one. But in any case, I think this problem has already been solved so here I am asking for recommendations. Thanks, Paul

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• Toggle between "Extend these displays" and "Show desktop only on 1"

  - by Clayton Hughes

  I'm looking for a way to programmatically alter the video properties in Windows 7. I'd like to toggle the Multiple display state (as seen in Control Panel Appearances and Personalization Display Screen Resolution) between "Extend these displays" and "Show desktop only on 1". This is the sort of thing that I think is probably doable just by knowing the right Windows executable/dll to invoke with the right parameters and bundling that into a script or shortcut, but if so that information eludes me. Actual code solutions are fine, of course, but I'd like the change to be permanent and not just disable the other monitor(s) for the duration of the application.

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• dell server display on laptop screen

  - by hari

  Please redirect if this is not (and probably thats true) the correct forum/site. I have a dell server and I am trying to configure it for the first time. It is running windows server 2003. I do not have a monitor screen. Can I use laptop screen to display dell server and set it up? I mean to say is, if I can display dell server on laptop screen, it would be great. I am trying that with a dell laptop but not getting the display. Any help/pointer would be appreciated. Thanks in advance.

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• Webmail client that can open multiple email addresses at once like a desktop client

  - by Trent

  I've got 5 email domains with multiple email addresses on each domain. Traditional webmail clients only seem to allow you to browse a single account at a time (ie, you log into that account). With over 20 email addresses I need to monitor, this is obviously a major time sink. Is there a (preferably OSS, unix-based) webmail client that simulates a desktop email client, ie I log in once and can access all the email addresses from a central control panel? I've considered using a ticket system but that is overkill and not really used to my needs.

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• Monitoring disk performance with MRTG

  - by Ghostrider

  I use MRTG to monitor vital stats on my servers like disk space, CPU load, memory usage, temperatures etc. It all works fine and well for parameters that don't change rapidly. By running small VB script I can also get any Performance Counter. However these scripts are called by MRTG every 5 minutes while performance counters like physical disk idle time return a snapshot value from previous few seconds so a lot or data is missed. Surely I could write a service that would poll all required counters in background and store average values somewhere on disk where MRTG would pick them up. However before I do so I would like to find out if there is some ready solution that would allow me to get average value of some counter for the last 5 minutes as opposed to immediate snapshot.

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• RAD/Eclipse Eclipse Test and Performance Tools Platform, export data to text file

  - by Berlin Brown

  I am using the RAD (also on Eclipse) Test and Performance Monitoring. I monitor CPU performance time with it, on particular methods, etc. It is a good tool for my monitoring my applications but I can't copy/paste or export the output to a text file format. So I can send to the others. There has to be a way to export this? Also, I can save the output to file but it is '*.trcxml' binary file? has anyone seen a parser for this file format?

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• flex debugger (how to retrieve a session variable set by a browser)

  - by Rees

  hello, i'm creating a flex application and trying to debug using the "Network Monitor" view. The script i'm debugging fetches a PHP session variable (the PHP outputs xml) and the actionscript retrieves the value from the HTTPService event. if I am using say a chrome browser, i can correctly retrieve the session variable ANY TIME. if I switch to say a firefox browser, then clearly the chrome session variable is unavailable to firefox. My issue is that I create the session variable with say chrome, and then try to retrieve my session variable from my FLEX application debugger (which always returns null) -when I really want it to return my session variable. is there a way for my flex debugger to retrieve this session variable set by chrome (or any browser)? (I'm even using chrome as my debugging browser for flex)

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• Java: notify() vs. notifyAll() all over again

  - by Sergey Mikhanov

  If one google for "difference between notify() and notifyAll()" then a lot of explanations will pop up (leaving apart the javadoc paragraphs). It all boils down to the number of waiting threads being waken up: one in notify() and all in notifyAll(). However (if I do understand the difference between these methods right), only one thread is always selected for further monitor acquisition; in the first case the one selected by the VM, in the second case the one selected by the system thread scheduler. The exact selection procedures for both of them (in general case) are not known to the programmer. What's is the useful difference between notify() and notifyAll() then? Am I missing something?

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• Why does this call to jQuery's $.ajax() fire an empty request in Chrome and Firefox?

  - by Martin Wiboe

  Hello, I am trying to call a WCF RESTful service from jQuery. I am using JSON to encode both request and response. The following code functions correctly in IE8: url = 'http://ipv4.fiddler:5683/WeatherWCF/NewBinding/MyService/GetValueFloat'; $.ajax({ url: url, data: '{"alias": "Udetemperatur"}', type: "POST", contentType: "application/json; charset=utf-8", dataType: "text", // not "json" we'll parse success: function(res) { alert('Received response: ' + res); } }); However, in both Firefox and Chrome, res contains an empty string. After using Fiddler to monitor the request, it appears that jQuery sends an empty request to the server as shown in this screen dump: http://imgur.com/EJgwS.png This is the successful request: http://imgur.com/S77BA.png What am I doing wrong? Kind regards, Martin

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• Can GhostScript run in Medium Trust

  - by SkippyFire

  I am using GhostScript to generate some thumbnails of PDF pages in an ASP.NET application. I have it wrapped in this library called GhostScriptSharp that just uses DllImport to call methods in the GhostScript DLL. It looks like this wont work on a medium trust hosting environment, either because of the fact that it is calling unmanaged code, or that it looks like the library is creating files all over the place (outside my virtual directory). I ran Process Monitor and saw it trying to Read, QueryNameInformationFile, CreateFile and QueryStandardInformationFile in places like: C:\WINDOWS\system32\Halftone\Default or C:\gs\gs8.63\lib\Halftone\Default or C:\gs\font\Halftone\Default Any ideas about whether this is "fixable" to run in medium trust? If I can't use GhostScript, is there another free/open source library that WILL work in Medium trust?

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• Invoking EventHandler generic, TargetParameterCountException

  - by Am

  Hi, I have a DirectoryMonitor class which works on another thread. It has the following events declared: public class DirectoryMonitor { public event EventHandler<MonitorEventArgs> CreatedNewBook; public event EventHandler ScanStarted; .... } public class MonitorEventArgs : EventArgs { public Book Book { get; set; } } There is a form using that monitor, and upon receiving the events, it should update the display. Now, this works: void DirectoryMonitor_ScanStarted(object sender, EventArgs e) { if (InvokeRequired) { Invoke(new EventHandler(this.DirectoryMonitor_ScanStarted)); } else {...} } But this throws TargetParameterCountException: void DirectoryMonitor_CreatedNewBook(object sender, MonitorEventArgs e) { if (InvokeRequired) { Invoke(new EventHandler<MonitorEventArgs>(this.DirectoryMonitor_CreatedNewBook)); } else {...} } What am I missing?

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• Ruby SerialPorts Gem

  - by Seth Archer

  Using Ruby SerialPorts Gem to interact with hardware. When I write a byte array to the hardware using a program called "Serial Port Monitor" the hardware responds correctly. However, when I write the same byte array using ruby it doesn't work unless I do a read request just before the write request. This device doesn't respond correctly with this sp = SerialPort.new(args) sp.write [200.chr, 30.chr, 6.chr, 5.chr, 1.chr, 2.chr, 0.chr, 244.chr] But it does if I add a read request before the write. Like this sp SerialPort.new(args) sp.read sp.write [200.chr, 30.chr, 6.chr, 5.chr, 1.chr, 2.chr, 0.chr, 244.chr] This works, but I'm at a loss as to why. I should also add that the first snippet does work occasionally maybe 1/10 of the time.

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• What is your motivation?

  - by vava

  As software developers we all know that motivation matters. Without it we could just stare into the monitor all day long and do nothing. There are some tricks to get yourself motivated like talking to people or doing the fun part of the project, but they do not always work. In the mean time I started to notice that I am most productive when I could see the person who is appreciating my work. The user, who is using the software and enjoying it. Because if there's none, what's the point of writing this code? So I was wondering, what makes you be at your top, is it the users, your fellow coders or maybe the money you get? PS. I know there's quite a few questions about motivation but they all about overcoming current situation. What I want to hear is what makes you come to the office every day, what you enjoy the most in your job, what makes you want to write this code and do it as fast as you possible could.

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• How can I listen to multiple Serial Ports asynchronously in C#

  - by Kamiel Wanrooij

  I have an application that listens to a piece of hardware on a USB to Serial converter. My application should monitor more than one serial port at the same time. I loop the serial ports I need to listen to, and create a thread for each port. In the thread I have my data handing routine. When I assign one port, it runs flawlessly. When I listen to the other one, it also works. When I open both ports however, the second port always throws an UnauthorizedAccessException when calling serialPort.Open(). It does not matter in what order I open the ports, the second one always fails. I listen to the ports using serialPort.ReadLine() in a while loop. Can .NET open more than one port at the same time? Can I listen to both? Or should I use another (thread safe?) way to access my serial port events?

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• What is best way to raise application events for use with admin network monitoring tools

  - by J Cooper

  In a semi-critical .NET service application, what would be a good strategy for raising application events that could be monitored by network administration tools? The events would be for errors, status changes, and possibly other notifications. My company is planning to use some kind of tool down the road to monitor all critical machines and services. As of right now they are using Spice Works to do some monitoring but it is not known if they will keep this down the road. By strategy I mean, perhaps using some sort of protocol ( my network admin has mentioned SNMP), perhaps a service such as windows event log. I have no idea what is available, so I'm leaving the options open. With that in mind, here is a list of preferences I came up with: Somewhat easy to use with .NET. Reliability Should work well with a variety of admin monitoring tools Works with non - windows monitoring tools Works with Spice Works

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• Serial Mac OS X constantly freezes/locks/dissappears for USB to Arduino

  - by Niraj D

  I have a problem with my C++ code running in Xcode with both the AMSerial library as well as the generic C (ioctl, termios). After a fresh restart, my application works well but after I "kill" the program the Serial (I think) is not released. I have checked my open files under /dev and have killed the connection to serial USB from there, but my C++ still can't open the USB port. I have narrowed this down to being a low level Mac OS X issue, regarding blocking the port indefinitely, regardless of closing it using the aforementioned libraries. Just for context, I'm trying to send numbers through my USB port, serially to an Arduino Duemilanove at 9600 baud. Running Serial Monitor in Arduino is perfectly fine, however, running through a C++ application it freezes up my computer, occasionally, my mouse/keyboard freeze up: requiring a hard reset. How can this problem be fixed? It seems like Mac OS X is not USB friendly!

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• Are there free realtime financial data feeds since the demise of OpenQuant?

  - by Mel Cooper

  Now that the oligopole of market data providers successfully killed OpenQuant, does any alternative to proprietary and expensive subscriptions for realtime market data subsist? Ideally I would like to be able to monitor tick by tick securities from the NYSE, NASDAQ and AMEX (about 6000 symbols). Most vendors put a limit of 500 symbols watchable at the same time, this is unacceptable to me, even if one can imagine a rotation among the 500 symbols ie. making windows of 5 sec. of effective observation out of each minute for every symbol. Currently I'm doing this by a Java thread pool calling Google Finance, but this is unsatisfactory for several reasons, one being that Google doesn't return the volume traded. Any hint much appreciated, Cheers

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• How do you exclude folders on get operation for sourcecontrol in CruiseControl.NET

  - by Jon

  I have a cruisecontrol.net project which currently doesn't monitor a source safe project. It is forced manually. Within the source control block however I want to be able to exclude the 'get' operation of a certain folder. I know there is a ExclusionFilter feature on a source control block in the config file, but I think that this excludes the sub folder from being monitored not from being retrieved from the repository. Can anyone confirm this is the case, or help me find out how I can achieve this? I'm using CCNet 1.4 and SourceSafe

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• VB.NET: How to know time for which system is idle?

  - by Daredev

  I'm making an application in which I'm implementing auto-monitor turn off when system is idle, i.e. when user is not interacting with the system. I found a link: http://www.codeproject.com/KB/system/SystemIdleTimerComponent.aspx it does provides the componenent to know when system is idle. But when I include: Public WM_SYSCOMMAND As Integer = &H112 Public SC_MONITORPOWER As Integer = &Hf170 <DllImport("user32.dll")> _ Private Shared Function SendMessage(hWnd As Integer, hMsg As Integer, wParam As Integer, lParam As Integer) As Integer End Function Private Sub button1_Click(sender As Object, e As System.EventArgs) SendMessage(Me.Handle.ToInt32(), WM_SYSCOMMAND, SC_MONITORPOWER, 2) End Sub It shows this error: Cross-thread operation not valid: Control 'Form1' accessed from a thread other than the thread it was created on.

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• .NET or Windows Synchronization Primitives Performance Specifications

  - by ovanes

  Hello *, I am currently writing a scientific article, where I need to be very exact with citation. Can someone point me to either MSDN, MSDN article, some published article source or a book, where I can find performance comparison of Windows or .NET Synchronization primitives. I know that these are in the descending performance order: Interlocked API, Critical Section, .NET lock-statement, Monitor, Mutex, EventWaitHandle, Semaphore. Many Thanks, Ovanes P.S. I found a great book: Concurrent Programming on Windows by Joe Duffy. This book is written by one of the head concurrency developers for .NET Framework and is simply brilliant with lots of explanations, how things work or were implemented.

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