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• PHP: Can pcntl_alarm() and socket_select() peacefully exist in the same thread?

  - by DWilliams

  I have a PHP CLI script mostly written that functions as a chat server for chat clients to connect to (don't ask me why I'm doing it in PHP, thats another story haha). My script utilizes the socket_select() function to hang execution until something happens on a socket, at which point it wakes up, processes the event, and waits until the next event. Now, there are some routine tasks that I need performed every 30 seconds or so (check of tempbanned users should be unbanned, save user databases, other assorted things). From what I can tell, PHP doesn't have very great multi-threading support at all. My first thought was to compare a timestamp every time the socket generates an event and gets the program flowing again, but this is very inconsistent since the server could very well sit idle for hours and not have any of my cleanup routines executed. I came across the PHP pcntl extensions, and it lets me use assign a time interval for SIGALRM to get sent and a function get executed every time it's sent. This seems like the ideal solution to my problem, however pcntl_alarm() and socket_select() clash with each other pretty bad. Every time SIGALRM is triggered, all sorts of crazy things happen to my socket control code. My program is fairly lengthy so I can't post it all here, but it shouldn't matter since I don't believe I'm doing anything wrong code-wise. My question is: Is there any way for a SIGALRM to be handled in the same thread as a waiting socket_select()? If so, how? If not, what are my alternatives here? Here's some output from my program. My alarm function simply outputs "Tick!" whenever it's called to make it easy to tell when stuff is happening. This is the output (including errors) after allowing it to tick 4 times (there were no actual attempts at connecting to the server despite what it says): [05-28-10 @ 20:01:05] Chat server started on 192.168.1.28 port 4050 [05-28-10 @ 20:01:05] Loaded 2 users from file PHP Notice: Undefined offset: 0 in /home/danny/projects/PHPChatServ/ChatServ.php on line 112 PHP Warning: socket_select(): unable to select [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 116 [05-28-10 @ 20:01:15] Tick! PHP Warning: socket_accept(): unable to accept incoming connection [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 126 [05-28-10 @ 20:01:25] Tick! PHP Warning: socket_getpeername() expects parameter 1 to be resource, boolean given in /home/danny/projects/PHPChatServ/ChatServ.php on line 129 [05-28-10 @ 20:01:25] Accepting socket connection from PHP Notice: Undefined offset: 1 in /home/danny/projects/PHPChatServ/ChatServ.php on line 112 PHP Warning: socket_select(): unable to select [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 116 [05-28-10 @ 20:01:35] Tick! PHP Warning: socket_accept(): unable to accept incoming connection [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 126 [05-28-10 @ 20:01:45] Tick! PHP Warning: socket_getpeername() expects parameter 1 to be resource, boolean given in /home/danny/projects/PHPChatServ/ChatServ.php on line 129 [05-28-10 @ 20:01:45] Accepting socket connection from PHP Notice: Undefined offset: 2 in /home/danny/projects/PHPChatServ/ChatServ.php on line 112

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• Advice on Python/Django and message queues

  - by Andy Hume

  I have an application in Django, that needs to send a large number of emails to users in various use cases. I don't want to handle this synchronously within the application for obvious reasons. Has anyone any recommendations for a message queuing server which integrates well with Python, or they have used on a Django project? The rest of my stack is Apache, mod_python, MySQL.

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• Error compiling Win32 API GUI code with MinGW

  - by Eric Larsen

  Hey guys, this is my first post. I'm just getting started with win32 API programming in C++ and I'm having trouble compiling the winnie tutorial (http://www.relisoft.com/win32/winnie.html) with MinGW. My input and output: C:\Users\Eric\Projects g++ winnie.cpp -o winnie.exe /mingw/lib/libmingw32.a(main.o):main.c:(.text+0xd2): undefined reference to 'WinMain@16' collect2: ld returned 1 exit status Any help would be very much appreciated.

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• Ruby gem already activated

  - by Eric the Red

  How can I de-activate the newer version of cucumber, or get this to work with the earlier version? user$ rake features (in /Users/user/Project) /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -I "/Library/Ruby/Gems/1.8/gems/cucumber-0.6.1/lib:lib" "/Library/Ruby/Gems/1.8/gems/cucumber- 0.6.1/bin/cucumber" --format pretty can't activate cucumber (= 0.4.4, runtime) for [], already activated cucumber-0.6.1 for [] (Gem::LoadError) /Library/Ruby/Site/1.8/rubygems.rb:280:in `activate'

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• from ObjectiveC to ECMAscript

  - by eco_bach

  Going thru the excellent Apress books on Objective C. To help in my undertanding, I try and recode any Ojective C code samples in Java/Action-script. One common structure in method calls in ObjC leaves me a bit puzzled. -(id) initWithPressure: (float) pressure treadDepth: (float) treadDepth; (in ECMAscript)Would this be most similar to 1 method call with multiple arguments OR 2 method calls, each with a single argument?

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• How to run concurrency unit test?

  - by janetsmith

  Hi, How to use junit to run concurrency test? Let's say I have a class public class MessageBoard { public synchronized void postMessage(String message) { .... } public void updateMessage(Long id, String message) { .... } } I wan to test multiple access to this postMessage concurrently. Any advice on this? I wish to run this kind of concurrency test against all my setter functions (or any methodn that involves create/update/delete operation). Thanks

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• Run word on server for COM to work??

  - by chupinette

  I got this from php.net website. This is related to the problem I am having with tho code below. Can anyone explain me what the following does. I am using Vista. What does running Word on server implies? In order to get the Word example running, do the following on the server side. Worked for me... 1. Click START--RUN and enter "dcomcnfg" 2. In the "Applications" tab, go down to "Microsoft Word Document" 3. Click PROPERTIES button 4. Go to the "Security" Tab 5. Click "Use custom access permissions", and then click EDIT 6. Click ADD and then click SHOW USERS 7. Highlight the IIS anonymous user account (usually IUSR_), click ADD 8. Go back to the "Security" tab by hitting OK 9. Click "Use custom launch permissions", and the click EDIT 10. Click ADD and then click SHOW USERS 11. Highlight the IIS anonymous user account (usually IUSR_), click ADD 12. Hit OK, and then hit APPLY. Also, you should look at the "Identity" tab in the Microsoft Word Document PROPERTIES and see that it is set to "Interactive User" ALSO, log into the machine AS the IUSR_ account, start word, and make sure to click through the dialog boxes that Word shows the first time it is run for a certain user. In other words, make sure Word opens cleanly for the IUSR_ user. <?php // starting word $word = new COM("word.application") or die("Unable to instantiate Word"); echo "Loaded Word, version {$word->Version}\n"; //bring it to front $word->Visible = 1; //open an empty document $word->Documents->Add(); //do some weird stuff $word->Selection->TypeText("This is a test..."); $word->Documents[1]->SaveAs("Useless test.doc"); //closing word $word->Quit(); //free the object $word = null; ?>

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• FogBugz Screenshot does not start up at boot

  - by Jens

  Some of our FogBugz users experience that the Screenshot tool does not start-up automatically at boot. The quickest work-around is to re-install it. Any ideas on what causes this to happen? And how to prevent it from happening?

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• How long do you hold on to your old programming magazines? [closed]

  - by JohnMcG

  I'm moving offices, and have a file drawer full of old C++ Reports, MSDN Journals, C/C++ Users Journals and other programming journals that are getting close to a decade old. I can't remember referring to them, but it seems wrong to throw them out. Do the rest of you have a drawer full of old programming magazines, or am I couple steps from a Hoarders episode?

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• Flashing taskbar using Java (a la pidgin || MSN)

  - by jex

  I'm looking for a push in the right direction. I have a simple chat program, written totally in Java, and am looking for a way to get the Taskbar icons to flash. Preferably in a manner similar to Pidgin, or MSN. I'm hoping for a platform independent solution, as there are both Linux and Windows users, and preferably totally in Java.

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• How to pretend to be a Printer on iOS like the Apps Save2PDF or Adobe® CreatePDF?

  - by Lindemann

  I want to convert HTML to PDF on an iOS Device... ...but I dont want to load my HTML in a UIWebView, take a snapshot and generate an ugly PDF from this snapshot picture...because the text must be selectable for my purpose. I wonder how Apps like Save2PDF or Adobe® CreatePDF are able to converting multiple files into PDF and save them. I guess they don't generate the PDF's by their own, but get them from Apples Printing Framework. How does this Apps work?

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• is there a size limit to a text file?

  - by chicane

  HI All I am creating a log file for our website which will log every log-in by all the users to our orders area. I wish to know if you think its good to enter this log info in just one single file or should this be split up once the log file hits a certain size? My concern is that this file will get rather large over time, but im not certain of the size limit of a text file? thank you

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• How can create simple PHP Search Engine Submission tool?

  - by nic

  How can create simple PHP Search Engine Submission tool, which allows that to submit the site URL to multiple search engines such as "http://www.google.com/addurl?q=www.yoursite.com&hl=&dqq=" and also "http://www.bing.com/webmaster/SubmitSitePage.aspx" or any other other search engines?

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• How does one quickly access ruby and rails documentation when using vim?

  - by 46and2

  Hey all, What method are vim users out there using to quickly access documentation for both ruby and rails (other than switching to the browser to use ruby-doc or railsapi?). I was trying to adapt this script (http://vim.wikia.com/wiki/Online_documentation_for_word_under_cursor) to do the trick however it's only going to work if the cursor is over a class name and I'd like it to work with both class and methods. Thanks.

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• FCBKcomplete, Create a new TAG with Commas as opposed to Enter

  - by nobosh

  Currently, FCBKcomplete created new tags after you type something in and press enter. Is there a way to get the plug-in to allow for comma's (which is how tags are commonly separated) to create new tags? I'd hate to have to try to retrain users to user enter as opposed to the more standard comma separator. Plugin: http://www.emposha.com/javascript/fcbkcomplete.html Demo (use the second control): http://www.emposha.com/demo/fcbkcomplete_2/

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• Need help with my report (rdlc)

  - by salhzmzm

  Hi In my report there is a table and a line. the table is showing rows of data from my DB. I want to know how you could make the table size commensurate with the line (make the length of the line is equal to the length of the table) I set the property "RepeatWith" in the line properties to the table in my report, but this isn't working because this will only work if the data region spans multiple pages. How I can do that? Thanks in Adv

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• Do I need Amazon's EC2, Cloudfront, RDS?

  - by Jasie

  Hello, I want to publish a web site on Amazon's servers, that: Runs CakePHP Uses MySQL to store data Lets users upload audio through flash (currently using a hosted Flash Media Server), and listen to the files later Do I need Amazon's EC2 for the website, RDS for the MySQL database, and CloudFront for the FMS? Thanks.

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• does a windows application in C# support gif annimation ?

  - by Egon

  Is this possible ? if yes how ? I am creating a windows application, which makes multiple web queries. I want the interface to have a loading symbol, so that the user doesn't feel that the screen has frozen. Thank you.

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• forms authentication

  - by Alexander

  Ok so I am using forms authentication in my web site and I defined this in my config. Therefore I have an ASPNETDB.MDF. So do I need to have a database called ASPNETDB.MDF in my web host? If that is the case then how do I connect this so that my site uses this to verify users? I am sorry this seems to be like a very noob question

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• healthy DLL reference broken after compile multi-project solution

  - by Code Sherpa

  Hi. I have a solution with multiple class libraries. When I compile each individual library (and the web site by itself) compilation always succeeds. But, when I compile the solution as a whole, one of the library references fails with a little yellow exclamation mark next to the failed library. I am guessing this has to do with the build order? Can somebody suggest what i have to do to resolve this? Thanks in advance.

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• Error Connecting to Third Party App via COM: mscorlib Exception from HRESULT: 0x80040202

  - by Dave

  One particular user is getting an exception when connecting an application I created to a third party app using COM. The connection fails with the following error: Source: mscorlib Message: Exception from HRESULT: 0x80040202 This software works fine for other users. Any ideas what could be going on? The error occurs just before the app adds some event handlers to some of the COM objects from the third party app. It is able to successfully instantiate the objects, though.

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• Check username for invalid characters

  - by MILESMIBALERR

  How do you check if a username contains invalid characters? I want to restrict each users username with PHP to having numbers, letters, and underscores.

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• EDI X12 810 Document

  - by Saif Khan

  Hi, Where can I find a sample document with multiple invoices in the same 810 document? Most of the samples I find only has one invoice.

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• Oracle JDBC connection exception in Solaris but not Windows?

  - by lupefiasco

  I have some Java code that connects to an Oracle database using DriverManager.getConnection(). It works just fine on my Windows XP machine. However, when running the same code on a Solaris machine, I get the following exception. Both machines can reach the database machine on the network. I have included the Oracle trace logs. Mar 23, 2010 12:12:33 PM org.apache.commons.configuration.ConfigurationUtils locate FINE: ConfigurationUtils.locate(): base is /users/theUser/ADCompare, name is props.txt Mar 23, 2010 12:12:33 PM org.apache.commons.configuration.ConfigurationUtils locate FINE: Loading configuration from the path /users/theUser/ADCompare/props.txt Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.OracleDriver connect FINE: OracleDriver.connect(url=jdbc:oracle:thin:@//theServer:1521/theService, info) Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.OracleDriver connect FINER: OracleDriver.connect() walletLocation:(null) Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.OracleDriver parseUrl FINER: OracleDriver.parseUrl(url=jdbc:oracle:thin:@//theServer:1521/theService) Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.OracleDriver parseUrl FINER: sub_sub_index=12, end=46, next_colon_index=16, user=17, slash=18, at_sign=17 Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.OracleDriver parseUrl FINER: OracleDriver.parseUrl(url):return Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.OracleDriver connect FINER: user=theUser, password=******, database=//theServer:1521/theService, protocol=thin, prefetch=null, batch=null, accumulate batch result =true, remarks=null, synonyms=null Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.PhysicalConnection <init> FINE: PhysicalConnection.PhysicalConnection(ur="jdbc:oracle:thin:@//theServer:1521/theService", us="theUser", p="******", db="//theServer:1521/theService", info) Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.PhysicalConnection <init> FINEST: PhysicalConnection.PhysicalConnection() : connectionProperties={user=theUser, password=******, protocol=thin} Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.PhysicalConnection initialize FINE: PhysicalConnection.initialize(ur="jdbc:oracle:thin:@//theServer:1521/theService", us="theUser", access) Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.PhysicalConnection initialize FINE: PhysicalConnection.initialize(ur, us):return Mar 23, 2010 12:12:33 PM oracle.jdbc.driver.PhysicalConnection needLine FINE: PhysicalConnection.needLine()--no return java.lang.ArrayIndexOutOfBoundsException: 31 at oracle.net.nl.NVTokens.parseTokens(Unknown Source) at oracle.net.nl.NVFactory.createNVPair(Unknown Source) at oracle.net.nl.NLParamParser.addNLPListElement(Unknown Source) at oracle.net.nl.NLParamParser.initializeNlpa(Unknown Source) at oracle.net.nl.NLParamParser.<init>(Unknown Source) at oracle.net.resolver.TNSNamesNamingAdapter.loadFile(Unknown Source) at oracle.net.resolver.TNSNamesNamingAdapter.checkAndReload(Unknown Source) at oracle.net.resolver.TNSNamesNamingAdapter.resolve(Unknown Source) at oracle.net.resolver.NameResolver.resolveName(Unknown Source) at oracle.net.resolver.AddrResolution.resolveAndExecute(Unknown Source) at oracle.net.ns.NSProtocol.establishConnection(Unknown Source) at oracle.net.ns.NSProtocol.connect(Unknown Source) at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1037) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:282) at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:468) at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:839) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:185) The above exception is also thrown if I use OracleDataSource instead of the generic DriverManager.getConnection(). Any ideas on why the behavior is different in the different environments?

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• Scroll Wheel in Delphi 7 with CodeRush

  - by GM Mugford

  One casualty of my brief dalliance with Delphi 2010 and subsequent return to using Delphi 7 was my acceptance of the wheel-scrolling behaviour in Delphi 7 with CodeRush installed. The scroll wheel scrolls horizontally in that environment, which I've accepted for all these many years. But it sure was nice to have vertical scrolling while in D2010. Now, I wonder if there is any 'fix' to achieve the 'natural' scroll direction in my environment. Any old CodeRush/D7 users out there with a solution?

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