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  • Music Streaming Devices

    - by Skizz
    I'm looking for peoples opinion on wireless music streaming devices - something like this. I have an iTunes library hosted on an ubuntu server and I'm looking for something to allow me to listen to all the albums stored on it. Ideally, it should provide a good quality playback both over headphones and through speakers so that everyone can hear it. It doesn't need to be ultra-portable - being able to move the system and plug in a mains lead should be enough, so a single, integrated unit is preferable. One product per answer please and if you've used a product, vote it up or down depending on whether it's any good or not. Use comments to highlight good/bad points.

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  • OpenVPN Setup - Service Won't Start

    - by Lenwood
    I'm in the process of setting up OpenVPN on a VPS running Debian 6. I've walked step-by-step through this guide twice now, and I can't get the service to start. When I start the service, the error reported in the log file is: Cannot ioctl TUNSETIFF tun: Inappropriate ioctl for device (errno=25) I've searched the web a few times and I'm not finding anything helpful. I've tried: Changing file permissions: no change Deleting the file: get an error stating no file found (errno=2) Making a folder named "tun": get an error stating no file found (errno=2) I've wiped my installation and completed the steps verbatim twice now. I get no errors along the way, just the error above within my log file. The contents of my server.conf file are listed below, minus all the comments for brevity. Can anyone help? port 1194 proto udp dev tun ca ca.crt cert myserver.crt key myserver.key dh dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log log openvpn.log verb 3

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  • Rails running multiple delayed_job - lock tables

    - by pepernik
    Hey. I use delayed_job for background processing. I have 8 CPU server, MySQL and I start 7 delayed_job processes RAILS_ENV=production script/delayed_job -n 7 start Q1: I'm wondering is it possible that 2 or more delayed_job processes start processing the same process (the same record-row in the database delayed_jobs). I checked the code of the delayed_job plugin but can not find the lock directive in a way it should be. I think each process should lock the database table before executing an UPDATE on lock_by column. They lock the record simply by updating the locked_by field (UPDATE delayed_jobs SET locked_by...). Is that really enough? No locking needed? Why? I know that UPDATE has higher priority than SELECT but I think this does not have the effect in this case. My understanding of the multy-threaded situation is: Process1: Get waiting job X. [OK] Process2: Get waiting jobs X. [OK] Process1: Update locked_by field. [OK] Process2: Update locked_by field. [OK] Process1: Get waiting job X. [Already processed] Process2: Get waiting jobs X. [Already processed] I think in some cases more jobs can get the same information and can start processing the same process. Q2: Is 7 delayed_jobs a good number for 8CPU server? Why yes/not. Thx 10x!

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  • DB2 Driver Connection Hanging in Glassfish Connection Pool

    - by Ant
    We have an intermittent issue around the DB2 used from a Glassfish connection pool. What happens is this: Under situations where the database (DB2 on ZOS) is under stress, our application (which is a multi-threaded application using connections to DB2 via a Glassfish connection pool) stops doing anything. The following are observed: 1) Looking at the server using JConsole, we can see a thread waiting indefinitely in the DB2 driver's getConnection() method. We can also see that it has gained a lock on a Vector within the driver. Several other threads are also calling the getConnection() method in the driver, and are hanging waiting for the lock on the Vector to be released. 2) Looking at the database itself, we can see that there are connections from the Glassfish server open and waiting to be used. It seems that there is some sort of mismatch between the connection pool on Glassfish and the connections actually open to DB2. Has anyone come across this issue before? Or something similar? If you need any more information that I haven't provided, then please let me know!

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  • Use of Syntactic Sugar / Built in Functionality

    - by Kyle Rozendo
    I was busy looking deeper into things like multi-threading and deadlocking etc. The book is aimed at both pseudo-code and C code and I was busy looking at implementations for things such as Mutex locks and Monitors. This brought to mind the following; in C# and in fact .NET we have a lot of syntactic sugar for doing things. For instance (.NET 3.5): lock(obj) { body } Is identical to: var temp = obj; Monitor.Enter(temp); try { body } finally { Monitor.Exit(temp); } There are other examples of course, such as the using() {} construct etc. My question is when is it more applicable to "go it alone" and literally code things oneself than to use the "syntactic sugar" in the language? Should one ever use their own ways rather than those of people who are more experienced in the language you're coding in? I recall having to not use a Process object in a using block to help with some multi-threaded issues and infinite looping before. I still feel dirty for not having the using construct in there. Thanks, Kyle

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  • How to make schema dumps comparable between Windows and Linux

    - by Jonathan
    I have two systems running, one on linux and the other on windows. From the linux box, I ran pg_dump against both systems and dumped the schema. pg_dump command: pg_dump -h HOST -U USER -s -f /tmp/out.sql DB_NAME After I removed all of the "--" comments, I diffed the files together. Diff output snippet, linux compared to windows: - ADD CONSTRAINT sys_c004775 FOREIGN KEY (ruleid) REFERENCES rule(ruleid); + ADD CONSTRAINT sys_c004775 FOREIGN KEY (ruleid) REFERENCES "rule"(ruleid); The linux dump does not quote any entities and windows does. Is this a function of some encoding or just of a difference between windows and linux? Is there an option in pg_dump to make the output more consistent?

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  • How can I include guidance text in Word?

    - by gf131072
    We use several Word documents as templates and currently include 'guidance' text for the reader - in the form of grey, italic text - to provide guidance to the person completing the document. Note how the grey+italic text is used to provide both guidance and example content Problems with this approach include: People forgetting to delete all of this template/boilerplate text People using the italic+grey formatting when inputting real information because they don't change the style We've considered including Reviewing comments as an alternative but this can be a pain and suffers from the first problem above. I'm not sure a simple, elegant solution exists here but if there's something obvious I'm missing I'd love to hear about it.

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  • java and threads: very strange behaviour

    - by Derk
    private synchronized Map<Team, StandingRow> calculateStanding() { System.out.println("Calculate standing for group " + getName()); Map<Team, StandingRow> standing = new LinkedHashMap<Team, StandingRow>(); for (Team team : teams) { standing.put(team, new StandingRow(team)); } StandingRow homeTeamRow, awayTeamRow; for (Match match : matches.values()) { homeTeamRow = standing.get(match.getHomeTeam()); awayTeamRow = standing.get(match.getAwayTeam()); System.out.println("Contains key for " + match.getHomeTeam() + ": " + standing.containsKey(match.getHomeTeam())); System.out.println("Contains key for " + match.getAwayTeam() + ": " + standing.containsKey(match.getAwayTeam())); } } This is my code. matches contains 6 elements, but the problem is that after two matches no keys are anymore found in the standing map. The output is for example Contains key for Zuid-Afrika: true Contains key for Mexico: true Contains key for Uruguay: true Contains key for Frankrijk: true Contains key for Zuid-Afrika: false Contains key for Uruguay: false Contains key for Frankrijk: false Contains key for Mexico: false Contains key for Mexico: false Contains key for Uruguay: false Contains key for Frankrijk: false Contains key for Zuid-Afrika: false This is in a threaded environment, but the method is synchronized so I thought that this would not give a problem? I have also a simple unit test for this method and that works well.

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  • ubuntu12.04 hangs at checking battery state

    - by crystalbass17
    My 12.04 system hangs at "Checking battery state". At this stage, no commands work eg: ctrl+alt+f1, alt+f5. I ran recovery mode, I ran the command sudo mount -o remount, rw sudo dpkg-reconfigure gdm and gdm was the only one installed so I didn't get a GUI screen. I have an integrated graphics card "Intel Corporation Mobile 4 chipset Integrated Graphics Controller (rev 07)". So I cannot install nvidia drivers as everyone else suggests. I have gone through several similar questions but everyone suggests reconfiguring gdm or reinstalling graphic drivers. I did sudo add-apt-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get upgrade to get the latest x-swat drivers. The system still hung at the same line. The other option is to reinstall ubuntu, which is out of the question, since we have a very specific install for our project where the settings are very hard to duplicate. Suggestions/Comments welcome.

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  • Upgrading Fedora on Amazon to 12 but getting libssl.so.* & libcrypto.so.* are missing

    - by bateman_ap
    I am upgrading to Fedora 12 on a Amazon EC2 using help here: http://www.ioncannon.net/system-administration/894/fedora-12-bootable-root-ebs-on-ec2/ I managed to do a 64 bit instance OK, however facing some problems with a standard one. On the final bit of the install from 11 to 12 I am getting an error: Error: Missing Dependency: libcrypto.so.8 is needed by package httpd-tools-2.2.1.5-1.fc11.1.i586 (installed) Error: Missing Dependency: libssl.so.8 is needed by package httpd-tools-2.2.1.5-1.fc11.1.i586 (installed) This is referenced in the comments from the link above but all it says is: Q: Apache failed, or libssl.so.* & libcrypto.so.* are missing A: These versions are mssing the symlinks they require. Easy fix, go symlink them to the newest versions in /lib However I am afraid I don't know how to do this. If it is any help I tried running the command locate libssl.so and got: /lib/libssl.so.0.9.8b /lib/libssl.so.6

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  • Is there any way to access the mp3 or other file type tags from within an ipod touch/iphone?

    - by quixotic1
    I am just looking for an existing app that will let me read all the tags that are stored in a particular song on my ipod touch/iphone. I'm not much of a programmer, but would be willing to learn the iphone sdk (on windows) if I could build a program that would do this for me. I would love to be able to modify the tag while on the iphone, but just viewing them would be a great use to me. I'd like to read the Year tag, the comments tag, composer, etc. It's so annoying that I can't do this. Or can I already and I just don't know how. Yes, I know how to view the lyrics tag. Seems they could have included the other tags. Help please? Thanks, Dave

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  • Cannot create Desktop shortcut

    - by Pantelis
    I have a WiX project and I want to automatically create a ProgramMenu and Desktop shortcut. I've tried the following but the Desktop shortcut is not created. The ProgramMenu shortcut works great. <Product Id="*" Name="Application Name" Language="1033" Version="1.0.0.0" Manufacturer="Company Name"> <Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" Description="A description" Comments="Some Comments" /> <MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName] is already installed." /> <MediaTemplate EmbedCab="yes"/> <!-- Minimal UI --> <UIRef Id="WixUI_Minimal"/> <!-- Adding the referenced components --> <Feature Id="Complete" Title="inStorHDRadio Complete" Level="1"> <ComponentGroupRef Id="InstallationComponents" /> <ComponentRef Id="ApplicationProgramsMenuShortcut"/> <ComponentRef Id="ApplicationDesktopShortcut"/> </Feature> </Product> <Fragment> <Directory Id="TARGETDIR" Name="SourceDir"> <!-- Installation Folder --> <Directory Id="ProgramFilesFolder"> <Directory Id="CompanyFolder" Name="CompanyName"> <Directory Id="InstallationFolder" Name="ApplicationName"/> </Directory> </Directory> <!-- Programs Menu Shortcut Folder --> <Directory Id="ProgramMenuFolder" Name="ProgramsMenu"> <Directory Id="ProgramsMenuCompanyFolder" Name="CompanyName"> <Directory Id="ProgramsMenuShortcutFolder" Name="ApplicationName"/> </Directory> </Directory> <!-- Desktop Shortcut Folder --> <Directory Id="DesktopShortcutFolder" Name="Desktop"/> </Directory> </Fragment> <!-- Compoments --> <Fragment> <ComponentGroup Id="inStorHDRadioComponents" Directory="InstallationFolder"> <!-- All application components in Program Files --> </ComponentGroup> <!-- SHORTCUTS --> <!--ProgramsMenu--> <DirectoryRef Id='ProgramsMenuShortcutFolder'> <Component Id='ApplicationProgramsMenuShortcut'> <RemoveFolder Id='RemoveProgramsMenuShortcutFolder' Directory='ProgramsMenuShortcutFolder' On='uninstall' /> <RemoveFolder Id='RemoveProgramsMenuCompanyFolder' Directory='ProgramsMenuCompanyFolder' On='uninstall' /> <Shortcut Id='ApplicationProgramsMenuShortcut' Name='Company Name' Target='[#Application.exe]' WorkingDirectory='InstallationFolder' Icon='application.ico' /> <RegistryValue Name='RegistryValueProgramMenuShortcut' Root='HKCU' Key='Software\Microsoft\[Manufacturer]\[ProductName]' Type='integer' Value='1' /> </Component> </DirectoryRef> <!--Desktop--> <DirectoryRef Id='DesktopShortcutFolder'> <Component Id='ApplicationDesktopShortcut'> <RemoveFolder Id='RemoveDesktopShortcutFolder' Directory='DesktopShortcutFolder' On='uninstall'/> <Shortcut Id='ApplicationDesktopShortcut' Name='Application Name' Target='[#Bootstrapper.exe]' WorkingDirectory='InstallationFolder' Directory='DesktopShortcutFolder' Advertise='no' Icon='application.ico'/> <RegistryValue Name='RegistryValDesktopShortcut' Root='HKCU' Key='Software\[Manufacturer]\[ProductName]' KeyPath='yes' Type='integer' Value='1' /> </Component> </DirectoryRef> </Fragment> <Fragment> <Icon Id="application.ico" SourceFile="Files\application.ico" /> <Icon Id="programs.ico" SourceFile="Files\programs.ico"/> <Property Id="ARPPRODUCTICON" Value="programs.ico" /> <Property Id="ARPHELPLINK" Value="http://www.company.com" /> </Fragment> Whats wrong with the code? The ProgramMenu shortcut is working perfectly fine, but the desktop one is not getting created.

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  • Virtual environment firewall with CSF + iptables rules on VM?

    - by luison
    We are getting into virtualization with a Proxmox VE (OpenVZ + KVM) server. Our plan for firewall is to have CSF (http://configserver.com/cp/csf.html) running on the host machine as we've had a reasonable good experience with it in the past. Apart from that we plan simple firewall rules on the VM machines (mostly OpenVZ containers with same kernel) and maybe fail2ban simple specific rules. I would appreciate comments with anyone with similar experiences? I understand all traffic comes via the host machine so a combined firewall there with specific firewalling on the VM should work, alltough some iptables rules are hard to get to work on OpenVZ containers.

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  • Thread-safe data structure design

    - by Inso Reiges
    Hello, I have to design a data structure that is to be used in a multi-threaded environment. The basic API is simple: insert element, remove element, retrieve element, check that element exists. The structure's implementation uses implicit locking to guarantee the atomicity of a single API call. After i implemented this it became apparent, that what i really need is atomicity across several API calls. For example if a caller needs to check the existence of an element before trying to insert it he can't do that atomically even if each single API call is atomic: if(!data_structure.exists(element)) { data_structure.insert(element); } The example is somewhat awkward, but the basic point is that we can't trust the result of "exists" call anymore after we return from atomic context (the generated assembly clearly shows a minor chance of context switch between the two calls). What i currently have in mind to solve this is exposing the lock through the data structure's public API. This way clients will have to explicitly lock things, but at least they won't have to create their own locks. Is there a better commonly-known solution to these kinds of problems? And as long as we're at it, can you advise some good literature on thread-safe design? EDIT: I have a better example. Suppose that element retrieval returns either a reference or a pointer to the stored element and not it's copy. How can a caller be protected to safely use this pointer\reference after the call returns? If you think that not returning copies is a problem, then think about deep copies, i.e. objects that should also copy another objects they point to internally. Thank you.

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  • *.example.com wildcard domain can be parsed from a single page?

    - by Sean Kean
    For a domain 'example.com' - what is the easiest way to set up a wildcard dns (*.example.com), hosting, and htaccess/httpd.conf/virtualhost, and script on a page so that: how.do.i.setup.a.site.with.wildcards.like.this.example.com or anything.that.is.given.as.a.subdomain.for.example.com is rendered by a page at example.com/index.html - yet keeps the wildcard subdomain in the URL bar and passes the full URL as a parameter for rendering tags in HTML? An example tag is a Facebook comment: { div class="fb-comments" data-href="http://how.do.i.setup.a.site.with.wildcards.like.this.example.com" data-num-posts="2" data-width="500" } I just opened a hosting account with spry.com and have a VPS running Ubuntu 11.04-x86-LAMP - Essentially, what is the most straightforward way of doing this? Thanks so much. (I originally posted this over on stackoverflow but realize its more of a serverfault question)

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  • Application.ProcessMessages hangs???

    - by X-Ray
    my single threaded delphi 2009 app (not quite yet complete) has started to have a problem with Application.ProcessMessages hanging. my app has a TTimer object that fires every 100 ms to poll an external device. i use Application.ProcessMessages to update the screen when something changes so the app is still responsive. one of these was in a grid OnMouseDown event. in there, it had an Application.ProcessMessages that essentially hung. removing that was no problem except that i soon discovered another Application.ProcessMessages that was also blocking. i think what may be happening to me is that the TTimer is--in the app mode i'm currently debugging--probably taking too long to complete. i have prevented the TTimer.OnTimer event hander from re-entering the same code (see below): procedure TfrmMeas.tmrCheckTimer(Sender: TObject); begin if m_CheckTimerBusy then exit; m_CheckTimerBusy:=true; try PollForAndShowMeasurements; finally m_CheckTimerBusy:=false; end; end; what places would it be a bad practice to call Application.ProcessMessages? OnPaint routines springs to mind as something that wouldn't make sense. any general recommendations? i am surprised to see this kind of problem arise at this point in the development!

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  • asyncore callbacks launching threads... ok to do?

    - by sbartell
    I'm unfamiliar with asyncore, and have very limited knowledge of asynchronous programming except for a few intro to twisted tutorials. I am most familiar with threads and use them in all my apps. One particular app uses a couchdb database as its interface. This involves longpolling the db looking for changes and updates. The module I use for couchdb is couchdbkit. It uses an asyncore loop to watch for these changes and send them to a callback. So, I figure from this callback is where I launch my worker threads. It seems a bit crude to mix asynchronous and threaded programming. I really like couchdbkit, but would rather not introduce issues into my program. So, my question is, is it safe to fire threads from an async callback? Here's some code... {{{ def dispatch(change): global jobs, db_url # jobs is my queue db = Database(db_url) work_order = db.get(change['id']) # change is an id to the document that changed. # i need to get the actual document (workorder) worker = Worker(work_order, db) # fire the thread jobs.append[worker] worker.start() return main() . . . consumer.wait(cb=dispatch, since=update_seq, timeout=10000) #wait constains the asyncloop. }}}

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  • User Getting Logged Out After Making First Comment

    - by John
    Hello, I am using a login system that works well. I am also using a comment system. The comment function does not show up unless the user is logged in (as shown in commentformonoff.php below). When a user makes a comment, the info is passed from the function "show_commentbox" to the file comments2a.php. Then, the info is passed to the file comments2.php. When the site is first pulled up on a browser, after logging in and making a comment, the user is logged out. After logging in a second time during the same browser session, the user is no longer logged out after making a comment. How can I keep the user logged in after making the first comment? Thanks in advance, John Commentformonoff.php: <?php if (!isLoggedIn()) { if (isset($_POST['cmdlogin'])) { if (checkLogin($_POST['username'], $_POST['password'])) { show_commentbox($submissionid, $submission, $url, $submittor, $submissiondate, $countcomments, $dispurl); } else { echo "<div class='logintocomment'>Login to comment</div>"; } } else { echo "<div class='logintocomment'>Login to comment</div>"; } } else { show_commentbox($submissionid, $submission, $url, $submittor, $submissiondate, $countcomments, $dispurl); } ?> Function "show_commentbox": function show_commentbox($submissionid, $submission, $url, $submittor, $submissiondate, $countcomments, $dispurl) { echo '<form action="http://www...com/.../comments/comments2a.php" method="post"> <input type="hidden" value="'.$_SESSION['loginid'].'" name="uid"> <input type="hidden" value="'.$_SESSION['username'].'" name="u"> <input type="hidden" value="'.$submissionid.'" name="submissionid"> <input type="hidden" value="'.stripslashes($submission).'" name="submission"> <input type="hidden" value="'.$url.'" name="url"> <input type="hidden" value="'.$submittor.'" name="submittor"> <input type="hidden" value="'.$submissiondate.'" name="submissiondate"> <input type="hidden" value="'.$countcomments.'" name="countcomments"> <input type="hidden" value="'.$dispurl.'" name="dispurl"> <label class="addacomment" for="title">Add a comment:</label> <textarea class="checkMax" name="comment" type="comment" id="comment" maxlength="1000"></textarea> <div class="commentsubbutton"><input name="submit" type="submit" value="Submit"></div> </form> '; } Included in comments2a.php: $uid = mysql_real_escape_string($_POST['uid']); $u = mysql_real_escape_string($_POST['u']); $query = sprintf("INSERT INTO comment VALUES (NULL, %d, %d, '%s', NULL)", $uid, $subid, $comment); mysql_query($query) or die(mysql_error()); $lastcommentid = mysql_insert_id(); header("Location: comments2.php?submission=".$submission."&submissionid=".$submissionid."&url=".$url."&submissiondate=".$submissiondate."&comment=".$comment."&subid=".$subid."&uid=".$uid."&u=".$u."&submittor=".$submittor."&countcomments=".$countcomments."&dispurl=".$dispurl."#comment-$lastcommentid"); exit(); Included in comments2.php: if($_SERVER['REQUEST_METHOD'] == "POST"){header('Location: http://www...com/.../comments/comments2.php?submission='.$submission.'&submissionid='.$submissionid.'&url='.$url.'&submissiondate='.$submissiondate.'&submittor='.$submittor.'&countcomments='.$countcomments.'&dispurl='.$dispurl.'');} $uid = mysql_real_escape_string($_GET['uid']); $u = mysql_real_escape_string($_GET['u']);

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  • activemessaging with stomp and activemq.prefetchSize=1

    - by Clint Miller
    I have a situation where I have a single activemq broker with 2 queues, Q1 and Q2. I have two ruby-based consumers using activemessaging. Let's call them C1 and C2. Both consumers subscribe to each queue. I'm setting activemq.prefetchSize=1 when subscribing to each queue. I'm also setting ack=client. Consider the following sequence of events: 1) A message that triggers a long-running job is published to queue Q1. Call this M1. 2) M1 is dispatched to consumer C1, kicking off a long operation. 3) Two messages that trigger short jobs are published to queue Q2. Call these M2 and M3. 4) M2 is dispatched to C2 which quickly runs the short job. 5) M3 is dispatched to C1, even though C1 is still running M1. It's able to dispatch to C1 because prefetchSize=1 is set on the queue subscription, not on the connection. So the fact that a Q1 message has already been dispatched doesn't stop one Q2 message from being dispatched. Since activemessaging consumers are single-threaded, the net result is that M3 sits and waits on C1 for a long time until C1 finishes processing M1. So, M3 is not processed for a long time, despite the fact that consumer C2 is sitting idle (since it quickly finishes with message M2). Essentially, whenever a long Q1 job is run and then a whole bunch of short Q2 jobs are created, exactly one of the short Q2 jobs gets stuck on a consumer waiting for the long Q1 job to finish. Is there a way to set prefetchSize at the connection level rather than at the subscription level? I really don't want any messages dispatched to C1 while it is processing M1. The other alternative is that I could create a consumer dedicated to processing Q1 and then have other consumers dedicated to processing Q2. But, I'd rather not do that since Q1 messages are infrequent--Q1's dedicated consumers would sit idle most of the day tying up memory.

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  • java singleton instantiation

    - by jurchiks
    I've found three ways of instantiating a Singleton, but I have doubts as to whether any of them is the best there is. I'm using them in a multi-threaded environment and prefer lazy instantiation. Sample 1: private static final ClassName INSTANCE = new ClassName(); public static ClassName getInstance() { return INSTANCE; } Sample 2: private static class SingletonHolder { public static final ClassName INSTANCE = new ClassName(); } public static ClassName getInstance() { return SingletonHolder.INSTANCE; } Sample 3: private static ClassName INSTANCE; public static synchronized ClassName getInstance() { if (INSTANCE == null) INSTANCE = new ClassName(); return INSTANCE; } The project I'm using ATM uses Sample 2 everywhere, but I kind of like Sample 3 more. There is also the Enum version, but I just don't get it. The question here is - in which cases I should/shouldn't use any of these variations? I'm not looking for lengthy explanations though (there's plenty of other topics about that, but they all eventually turn into arguing IMO), I'd like it to be understandable with few words.

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  • Pump Messages During Long Operations + C# (it is urgent)

    - by Newbie
    Hi I have a web service that is doing huge computation and is taking more than a minute. I have generated the proxy file of the web service and then from my client end I am using the dll(of course I generated the proxy dll). My client side code is TimeSeries3D t = new TimeSeries3D(); int portfolioId = 4387919; string[] str = new string[2]; str[0] = "MKT_CAP"; DateRange dr = new DateRange(); dr.mStartDate = DateTime.Today; dr.mEndDate = DateTime.Today; Service1 sc = new Service1(); t = sc.GetAttributesForPortfolio(portfolioId, true, str, dr); But since it is taking to much time for the server to compute, after 1 minute I am receiving an error message The CLR has been unable to transition from COM context 0x33caf30 to COM context 0x33cb0a0 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations. Kindly guide me what to do? It is very urgent. Thanks

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  • replace specefique codes in a script using through a tool

    - by Moudiz
    I have a script that contain random codes but I am searching for a way in notepad ++ or for a batch-file or any tool that can replace sepcifque codes, here is an example: Random If this equal that then you sould do this and do that therefore.. the code should be executed immediatly --stackb select * from user_error where object_name = name select * from user_error where table= randomly case 1 a = b else c=a --stacke Begin with the structure of the data and divide the codes end with what you know I want to replace the words between the comments stack b and stack a so the result will be like below Random If this equal that then you sould do this and do that therefore.. the code should be executed immediatly --stackb The codes here has been replaced, can you do that ? case 1 a = b else c=a --stacke Begin with the structure of the data and divide the codes end with what you know Is there a code in batch file or note pad ++ where I can acheive my result?

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  • Sharing runtime variables between files

    - by nightcracker
    I have a project with a few files that all include the header global.hpp. Those files want to share and update information that is relevant for the whole program during runtime (that data is gathered progressively during the program runs but the fields of data are known at compile-time). Now my idea was to use a struct like this: global.hpp #include <string> #ifndef _GLOBAL_SESSION_STRUCT #define _GLOBAL_SESSION_STRUCT struct session_struct { std::string username; std::string password; std::string hostname; unsigned short port; // more data fields as needed }; #endif extern struct session_struct session; main.cpp #include "global.hpp" struct session_struct session; int main(int argc, char* argv[]) { session.username = "user"; session.password = "secret"; session.hostname = "example.com"; session.port = 80; // other stuff, etc return 0; } Now every file that includes global.hpp can just read & write the fields of the session struct and easily share information. Is this the correct way to do this? NOTE: For this specific project no threading is used. But please (for future projects and other people reading) clarify in your answer how this (or your proposed) solution works when threaded. Also, for this example/project session variables are shared. But this should also apply to any other form of shared variables.

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  • SSL Certificates, two-way authentication and loadbalancers

    - by 5arx
    We're looking to implement two-way authentication with client certificates for a privileged subset of our application users. The idea will be that if a certificate is detected the user will be asked for an additional password/PIN and that will be used to verify the certificate and user. Ordinary users will continue to authenticate themselves via the standard login mechanism. Our production environment (hosted by a well-known company) comprises load-balanced application servers and I'm unclear as to how this set-up will handle the certificates and I'm not certain if there are any pitfalls I should be aware of. I would very appreciate some thoughts, comments or real-world advice on the subject.

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  • How can this code throw a NullReferenceException?

    - by Davy8
    I must be going out of my mind, because my unit tests are failing because the following code is throwing a null ref exception: int pid = 0; if (parentCategory != null) { Console.WriteLine(parentCategory.Id); pid = parentCategory.Id; } The line that's throwing it is: pid = parentCategory.Id; The console.writeline is just to debug in the NUnit GUI, but that outputs a valid int. Edit: It's single-threaded so it can't be assigned to null from some other thread, and the fact the the Console.WriteLine successfully prints out the value shows that it shouldn't throw. Edit: Relevant snippets of the Category class: public class Category { private readonly int id; public Category(Category parent, int id) { Parent = parent; parent.PerformIfNotNull(() => parent.subcategories.AddIfNew(this)); Name = string.Empty; this.id = id; } public int Id { get { return id; } } } Well if anyone wants to look at the full code, it's on Google Code at http://code.google.com/p/chefbook/source/checkout I think I'm going to try rebooting the computer... I've seen pretty weird things fixed by a reboot. Will update after reboot. Update: Mystery solved. Looks like NUnit shows the error line as the last successfully executed statement... Copy/pasted test into new console app and ran in VS showed that it was the line after the if statement block (not shown) that contained a null ref. Thanks for all the ideas everyone. +1 to everyone that answered.

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