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  • Quick path jumping

    - by Sebastian P.
    I was just at a lecture, where I noticed the lecturer using a command (probably aliased) to jump to a specific folder. Example: ~/code$ j sciproj ~/projects/sciproj2011/$ This looked quite slick, so I started wondering: Is this a standard utility, and if so, what is the name? I have two theories as to how it works: It can both create, delete and jump to aliases directly from the command-line in the style of the example, without having to set up aliases in a configuration file or script or whatnot manually. It searches the home directory for a folder matching the name and jumps to it. The second option seems a bit slow, however, so the first would be preferred.

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  • wierd keyboard problem

    - by Sebastian
    just installed ubuntu on a acer extensa 5620 laptop. The keyboard works fine except when i want to type things that require me to use ctrl+alt+(any key), i can't use ctrl+alt+(any key) in any program, I can open terminal with ctrl+alt+t tho... and ctrl+(any key) and alt+(any key) seems to work. Also I just installed the game Heroes of Newerth and neither alt or ctrl key seems to work in the game. Any answer would be appreciated!

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  • What's the difference between a "Release" Xbox 360 build and a "Debug" one?

    - by Sebastian Gray
    I've got a build of my game that works on Windows under a release and debug build as expected. When I deploy the debug version of the game to the Xbox, it works as expected and runs the same as on Windows - however when I deploy the release version to the XBOX I get different behaviour within the game. I'm using a 3rd party library for the collisions (which is where I am seeing differences between the release and debug versions of my game); so I can't see what's actually different but I suspect they have some compiler directive for Debug on the Xbox to the Release version on the Xbox. As such, I'm thinking that I may need to release my game with the Debug build instead of the Release build but I want to know what issues I can expect by doing so? Are there any significant performance issues between the two build profiles?

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  • help me with my wine, it doesn't work proper

    - by Sebastian Raun Mikkelsen
    When i try to run something with wine, nothing happens! i have many problems with ubuntu so i have tried to get windows 8 back on the computer, but because ubuntu cant run exe files i cant open the installer. evenmore my computer cant boot from a CD/DVD anymore after i installed ubuntu, i turns op with a black screen with a blinking marker at the upper left corner of the screen and after 10 minutes it says something like " cant boot from the selected mediadevice - select another" so how to get windows back?

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  • Useful programming languages for hardware programming

    - by Sebastian Griotberg
    I am thinking to take the next semester a course called "Digital systems architecture", and I know that we need to program micro-controllers with several programming languages such as C, C++, verilog, and VHDL. I want to be prepared to take that course, but I need to know if I need to study deeper these languages. At this moment, I have taken one course in basic Java dealing with basic methods, data types, loop structures, vectors, matrices, and GUI programing. Must I study deeper Java and then go with C, and C++? Besides, I know basic verilog and VHDL.

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  • How does having the Debugger change the game execution on an XBOX 360?

    - by Sebastian Gray
    So I thought my issue was relating to the difference between a Debug and a Release build as per this question: What's the difference between a "Release" Xbox 360 build and a "Debug" one? but I've since found that if I go ahead and build a Creators Club version of the game using a Debug build and deploy to the XBOX, I get the same experience I had with the Release version of my game. However if I run the game from Visual Studio using F5 and having set the XBOX as the default platform, then the game runs as expected. If I change from Debug to Release and run with CTRL+F5 then the game also works as expected. How would running the game with the debugger attached change the results I am getting in game? Is there any way that I can use the same approach or change the default compilation of the game so that I can use this approach to release my game?

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  • Can emsripten compile down to Canvas-based Js instead of WebGL?

    - by Sebastian Scholle
    I understand that emscripten compiles down LLVM to JS and it converts OpenGL Calls to WebGL. Thats a fairly simple translation. Is there a way to tell emscripten to use some other graphics Library ( for example Pixi JS ) for its rendering code translations? Is the compiled JS code easy to update or would it be better to merge in your own Graphics API that handles WebGL/Canvas calls. IE: can we use a C++ Graphics Wrapper Library that when compiles to JS, will simply plug into our own JS Graphics Wrapper Library? Im assuming YES, but has anyone tried this? And if So, what would be your technique, as my C++ skills are basic.

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  • How is this "interface"-like structure/pattern called?

    - by Sebastian Negraszus
    Let's assume we have an XmlDoc class that contains basic functionality for dealing with an XML data structure and saving/loading data to/from a file. Now we have several subclasses, A, B and C. They all inherit from XmlDoc and add component-specific methods for setting and getting lots of data. They are like "interfaces" but also add an implementation for the signatures. Finally, we have an ABCDoc class that joins all the "interfaces" via virtual multiple inheritence and adds some ABCDoc-specific stuff, such as using XMLDoc-methods to set an appropriate doc type. We may also have an ADoc class for only saving A data. How is this pattern called? "Interface" is not really the right word since interfaces usually do not contain an implementation. Bonus points for C++ code conventions.

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  • iOS NSError with global handler

    - by Sebastian Dressler
    I am in the beginning of programming an iOS app. Having read the Apple guides on how to deal with errors, I got the following most important points: Exceptions are for programmers Use NSError for the user Now, NSError is usually passed as out-argument which can then be used inside and has to be checked by the caller. However, I'm asking myself whether it is a good idea to use a global error handler, say a singleton which wraps around NSError and could be used to trigger errors and error handling from within the called function. Is there anything against that method or would it be a bad practice?

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  • Die Fast / Flashback Recovery Area (FRA)

    - by Sebastian Solbach (DBA Community)
    In der Vergangenheit waren Informationen zur Fast Recovery Area (kurz FRA) bzw. Flashback Recovery Area, wie die FRA for 11gR2 benannt wurde, immer mal wieder in den einzelnen DBA Community Tipps enthalten, wenn dies gerade zum Thema passte oder für den Tipp relevant waren. Aus aktuellem Anlass haben wir uns deswegen entschlossen, die Informationen zur FRA im heutigen DBA Community Tipp  zu bündeln, damit man sofort eine Übersicht erhält und die automatischen Mechanismen innerhalb der FRA versteht. Zum Tipp.

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  • Weird keyboard problem

    - by Sebastian
    I just installed Ubuntu on an Acer Extensa 5620 laptop. The keyboard works fine except when I want to type things that require me to use Ctrl+Alt+(any key). I can't use Ctrl+Alt+(any key) shortcuts in any program, but I can open terminal with Ctrl+Alt+T. Ctrl+(any key) and Alt+(any key) shortcuts seems to work though. Also I just installed the game Heroes of Newerth and neither Alt or Ctrl keys seem to work in the game. Any answer would be appreciated!

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  • How can I make sure my evening project code is mine?

    - by Sebastian
    I'm a physicist with a CS degree and just started my PhD at a tech company (wanted to do applied research). It deals with large scale finite element simulations. After reviewing their current approach, I think that a radically different method has to be applied (they are using a commercial tool which is very limited). I'd rather base my research on an open source finite element solver and write a program which makes use of it. I'd like to develop this idea in the evenings, because that's the time that best suits me for programming (during the day I prefer reading and maths) and use it at a late stage of my PhD. I'd like to have the option to release my program as open source on my website as a reference, for future personal or even commercial (e.g. consulting) use. How can I make sure that my company doesn't claim the code ownership? I don't really I thought that a version control system could help (check out only in the evening). This would document that I programmed not during regular office hours (documented elsewhere). But these data can be easily manufactured. Any other ideas? I want to stress that I'm not interested in selling software. Jurisdiction is EU, if that matters. Thank you.

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  • help me with my wine, it doesn't work properly

    - by Sebastian Raun Mikkelsen
    When I try to run something with wine, nothing happens! I have many had problems with Ubuntu so I have tried to get Windows 8 back on the computer, but because Ubuntu can't run exe files I can't open the installer. Furthermore my computer can't boot from a CD/DVD anymore after I installed Ubuntu, it turns up with a black screen with a blinking marker at the upper left corner of the screen and after 10 minutes it says something like Can't boot from the selected media device - select another How do I get Windows back?

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  • How do I set a different wallpaper for each workspace in Xubuntu 13.04?

    - by Sebastian
    This might seem like a common question that have been already solved. Well, I checked many tutorials, question and googled a lot but almost everything failed after all. The main problem is that I do not have gconf-editor and even if I install it, I don't have an "/apps/nautilus/preferences/show_desktop" option to uncheck to finish whole quite known compiz tweak. Does anybody managed this issue on Xubuntu 13.04? May I ask how? Thank you in advance.

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  • Google Analytics for subdomains

    - by Sebastian
    I have two WordPress multisites under one domain - city-x.domain.com and city-y.domain.com. domain.com is a landing page where you select your city, and a cookie will redirect the user to that city on subsequent visits. I'd like to be able to track the number of hits on all pages on domain.com, city-x.domain.com and city-y.domain.com separately and combined. How is this On a side note, I've heard that GA underestimates hits. As this is important for advertising purposes, is there a better free service?

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  • nVidia FX5200 Can't set resolution upper than 800x600

    - by Sebastian
    When I install nVidia drivers from terminal with this command: sudo apt-get install nvidia-current ... and I reboot, I get the max. resolution 800x600. I added new mode successfully with xrandr, but my display is 480p. My display is connected to my PC with HDMI and in Windows I was have VGA resolution on HDMI but after I installed in Ubuntu the drivers, the resolution is 480p.How to fix that? And can I change the 420p to 720p or 1080i ? Because my display have option "HDMI Full PC mode" which is good because I can see my display fully, but the Full PC mode is not supported for 480p. Ubuntu: 12.04

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  • Pyramind of DIVs

    - by sebastian
    Hi there, I'm trying to build a pyramid that's made of 4 DIVs. The layout looks like this: ------ | #1 | ------ ---------------- | #2 | #3 | #4 | ---------------- Moreover I need 3 additional DIVs starting at the center DIV (#3) and containing either #1, #2 or #3 additionally. These DIVs are used the build a sliding effect with jQueryUI later on. It's supposed to look like #1, #2 and #4 slide out of #3. The margin between the DIVs is supposed to be 2 pixels. I also want the whole block to be centered. Even with display: inline; and position: absolute; enabled on the visible and invisible DIVs I can't get the layout right. I used some negative margins and when it looked ok for the first time I saw that my top DIV was positioned outside of the html body. I suppose there is a more simple and elegant way to achieve what I want. Thanks in advance Sebastian Here's what I've got so far: HTML: <div id="centerbox"> <div id="main">main</div> <div id="rail_top"> <div id="top">top</div> </div> <div id="rail_left"> <div id="left">left</div> </div> <div id="rail_right"> <div id="right">right</div> </div> </div> CSS: #centerbox { height: 602px; width: 904px; margin-top: 640px; margin-left: auto; margin-right: auto; } /* blue */ #main { background-color: #33F; height: 300px; width: 300px; margin: 2px; z-index: 9999; position: absolute; display: inline; margin-left: 302px; } /* green */ #top { background-color: #3F0; height: 300px; width: 300px; z-index: 1; position: absolute; display: inline; } /* pink */ #left { background-color: #F06; height: 300px; width: 300px; z-index: 1; } /* orange */ #right { background-color: #FC0; height: 300px; width: 300px; z-index: 1; margin-left: 302px; } #rail_top { height: 602px; width: 300px; display: inline; position: absolute; margin-top: -300px; margin-left: 302px; } #rail_left { height: 300px; width: 602px; float: left; position: absolute; display: inline; margin-top: 2px; } #rail_right { height: 300px; width: 602px; float: right; position: absolute; display: inline; margin-left: 302px; margin-top: 2px; }

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  • jquery jumps to top on click event, return false or prevenDefault doesn't work

    - by Sebsemillia
    Hi, I have written a simple jquery script for a content slider. My problem is that the screen always jumps to the top position of the parent div when sliding the content. I've tried return false and preventDefault to cope with this effect, but the two just make the script not work anymore, nothing happens when I click the links.. So here is the jquery code: $(document).ready(function (){ var itemCount = $('.container div').size(); var itemWidth = $('.container div').width(); $('.container').wrap('<div id="AboutSlider"></div>'); $('#AboutSlider').css({'width':'640px', 'overflow':'hidden', 'position':'relative', 'height':'400px'}); $('#AboutSlider .container').css({'width':itemCount*itemWidth+'px', 'position':'absolute', 'height':'400px'}); $('.container .aboutContent').css({'padding-left':'0px'}); $('#AboutSlider .aboutContent').css({'width':'640px', 'float':'left', 'min-height':'400px'}); $('#AboutNav a').click(function(){ var integer = $(this).attr('rel'); $('#AboutSlider .container').animate({left:-640*(parseInt(integer)-1)}) $('#AboutNav a').each(function(){ $(this).removeClass('active'); if($(this).hasClass('button'+integer)){ $(this).addClass('active')} }); }); }); And here the respective html bit: <div id="Dienstleistungen"> <div class="left_column"> <h2>Meine Dienstleistungen</h2> <h3>KOMPETENZEN</h3> <ul id="AboutNav"> <li><h1><a href="#Kompetenzen" class="button1 active" rel="1" title="Frontend Entwicklung | Sebastian B&ouml;hme">&Uuml;berblick</a></h1></li> <li><h1><a href="#Frontend" class="button2" rel="2" title="Frontend Entwicklung | Sebastian B&ouml;hme">Frontend Entwicklung</a></h1></li> <li><h1><a href="#CMS" class="button3" rel="3" title="Content Management Systeme &amp; Online Shops | Sebastian B&ouml;hme">Content Management Systeme &amp; Online Shops</a></h1></li> <li><h1><a href="#SEO" class="button4" rel="4" title="Suchmaschinenoptimierung (SEO) | Sebastian B&ouml;hme">Suchmaschinenoptimierung (SEO)</a></h1></li> <li><h1><a href="#ScreenDesign" class="button5" rel="5" title="Screen Design | Sebastian B&ouml;hme">Screen Design</a></h1></li> <li><h1><a href="#Hand" class="button6" rel="6" title="Alles aus einer Hand | Sebastian B&ouml;hme">Alles aus einer Hand</a></h1></li> </ul> </div> <div class="container"> <div id="Kompetenzen" class="aboutContent right_columns"> <h1>&Uuml;berblick</h1> <p>Phasellus in massa. Curabitur dolor eros, gravida et, hendrerit ac, cursus non, massa. Aliquam lorem. In hac habitasse platea dictumst. Cras eu mauris. Quisque lacus. Donec ipsum. Nullam vitae sem at nunc pharetra ultricies. Vivamus elit eros, ullamcorper a, adipiscing sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> <p>Teng sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> </div> <hr /> <div id="Frontend" class="aboutContent right_column "> <h1>Frontend Entwicklung</h1> <p>Phasellus in massa. Curabitur dolor eros, gravida et, hendrerit ac, cursus non, massa. Aliquam lorem. In hac habitasse platea dictumst. Cras eu mauris. Quisque lacus. Donec ipsum. Nullam vitae sem at nunc pharetra ultricies. Vivamus elit eros, ullamcorper a, adipiscing sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> <p>Teng sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> </div> <hr /> <div id="CMS" class="aboutContent right_column "> <h1>Content Management Systeme &amp; Online Shops</h1> <p>Phasellus in massa. Curabitur dolor eros, gravida et, hendrerit ac, cursus non, massa. Aliquam lorem. In hac habitasse platea dictumst. Cras eu mauris. Quisque lacus. Donec ipsum. Nullam vitae sem at nunc pharetra ultricies. Vivamus elit eros, ullamcorper a, adipiscing sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> <p>Teng sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> </div> <hr /> <div id="SEO" class="aboutContent right_column "> <h1>Suchmaschinenoptimierung (SEO)</h1> <p>Phasellus in massa. Curabitur dolor eros, gravida et, hendrerit ac, cursus non, massa. Aliquam lorem. In hac habitasse platea dictumst. Cras eu mauris. Quisque lacus. Donec ipsum. Nullam vitae sem at nunc pharetra ultricies. Vivamus elit eros, ullamcorper a, adipiscing sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> <p>Teng sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> </div> <hr /> <div id="ScreenDesign" class="aboutContent right_column "> <h1>Screen Design</h1> <p>Phasellus in massa. Curabitur dolor eros, gravida et, hendrerit ac, cursus non, massa. Aliquam lorem. In hac habitasse platea dictumst. Cras eu mauris. Quisque lacus. Donec ipsum. Nullam vitae sem at nunc pharetra ultricies. Vivamus elit eros, ullamcorper a, adipiscing sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> <p>Teng sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> </div> <hr /> <div id="Hand" class="aboutContent right_column"> <h1>Alles aus einer Hand</h1> <p>Curabitur dolor eros, gravida et, hendrerit ac, cursus non, massa. Aliquam lorem. In hac habitasse platea dictumst. Cras eu mauris. Quisque lacus. Donec ipsum. Nullam vitae sem at nunc pharetra ultricies. Vivamus elit eros, ullamcorper a, adipiscing sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> <p>Teng sit amet, porttitor ut, nibh. Maecenas adipiscing mollis massa. Nunc ut dui eget nulla venenatis aliquet. Sed luctus posuere justo. Cras vehicula varius turpis. Vivamus eros metus, tristique sit amet, molestie dignissim, malesuada et, urna. </p> </div> </div><!-- AboutSlider --> </div><!-- Dienstleistungen --> somebody got any idea? Thanks a lot in advance!!

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  • Removing google mail markers with jquery after getting them from xml

    - by sebastian
    Hi there, I'm trying to create a page that contains a google map. The map is filled with markers from an xml file. I just can't figure out how to remove "old" markers, that don't match the latest user input. At the moment my js stops after the very first xml item. The clearList.push(marker); is supposed to put the generated marker away for later usage. When the user hits the search button I want all markers to be gone and use clearMarkers();. Maybe someone here can help Sebastian Here is my JavaScript: $(document).ready(function() { $("#map").css({height: 650}); var clearList = []; var myLatLng = new google.maps.LatLng(52.518143, 13.372879); MYMAP.init('#map', myLatLng, 11); $("#showmarkers").click(function(e){ clearMarkers(); MYMAP.placeMarkers('markers.xml'); }); }); function clearMarkers() { $(clearList).each(function () { this.setmap(null); }); clearList = []; } var MYMAP = { map: null, bounds: null } MYMAP.init = function(selector, latLng, zoom) { var myOptions = { zoom:zoom, center: latLng, mapTypeId: google.maps.MapTypeId.HYBRID } this.map = new google.maps.Map($(selector)[0], myOptions); this.bounds = new google.maps.LatLngBounds(); } MYMAP.placeMarkers = function(filename) { $.get(filename, function(xml){ $(xml).find("marker").each(function(){ // read values from xml for searching var platzart = $(this).find('platzart').text(); var ort = $(this).find('ort').text(); var open = $(this).find('open').text(); if (platzart =="Kunstrasen" && $('#kunstrasen').attr('checked') || platzart =="Rasen" && $('#rasen').attr('checked') || platzart =="Tartan" && $('#tartan').attr('checked') || platzart =="Boltzplatz" && $('#boltzplatz').attr('checked') ){ // read values from xml for additional info var name = $(this).find('name').text(); var plz = $(this).find('plz').text(); var note = $(this).find('note').text(); var adress = $(this).find('adress').text(); // create a new LatLng point for the marker var lat = $(this).find('lat').text(); var lng = $(this).find('lng').text(); var point = new google.maps.LatLng(parseFloat(lat),parseFloat(lng)); // extend the bounds to include the new point MYMAP.bounds.extend(point); // create new marker var marker = new google.maps.Marker({ position: point, map: MYMAP.map }); clearList.push(marker); // add onclick overlay var infoWindow = new google.maps.InfoWindow(); var html='<strong>'+name+'</strong.><br />'+platzart; google.maps.event.addListener(marker, 'click', function() { infoWindow.setContent(html); infoWindow.open(MYMAP.map, marker); }); } MYMAP.map.fitBounds(MYMAP.bounds); }); }); } Thanks in advance

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  • C++ Multithreading with pthread is blocking (including sockets)

    - by Sebastian Büttner
    I am trying to implement a multi threaded application with pthread. I did implement a thread class which looks like the following and I call it later twice (or even more), but it seems to block instead of execute the threads parallel. Here is what I got until now: The Thread Class is an abstract class which has the abstract method "exec" which should contain the thread code in a derive class (I did a sample of this, named DerivedThread) Thread.hpp #ifndef THREAD_H_ #define THREAD_H_ #include <pthread.h> class Thread { public: Thread(); void start(); void join(); virtual int exec() = 0; int exit_code(); private: static void* thread_router(void* arg); void exec_thread(); pthread_t pth_; int code_; }; #endif /* THREAD_H_ */ And Thread.cpp #include <iostream> #include "Thread.hpp" /*****************************/ using namespace std; Thread::Thread(): code_(0) { cout << "[Thread] Init" << endl; } void Thread::start() { cout << "[Thread] Created Thread" << endl; pthread_create( &pth_, NULL, Thread::thread_router, reinterpret_cast<void*>(this)); } void Thread::join() { cout << "[Thread] Join Thread" << endl; pthread_join(pth_, NULL); } int Thread::exit_code() { return code_; } void Thread::exec_thread() { cout << "[Thread] Execute" << endl; code_ = exec(); } void* Thread::thread_router(void* arg) { cout << "[Thread] exec_thread function in thread" << endl; reinterpret_cast<Thread*>(arg)->exec_thread(); return NULL; } DerivedThread.hpp #include "Thread.hpp" class DerivedThread : public Thread { public: DerivedThread(); virtual ~DerivedThread(); int exec(); void Close() = 0; DerivedThread.cpp [...] #include "DerivedThread.cpp" [...] int DerivedThread::exec() { //code to be executed do { cout << "Thread executed" << endl; usleep(1000000); } while (true); //dummy, just to let it run for a while } [...] Basically, I am calling this like the here: DerivedThread *thread; cout << "Creating Thread" << endl; thread = new DerivedThread(); cout << "Created thread, starting..." << endl; thread->start(); cout << "Started thread" << endl; cout << "Creating 2nd Thread" << endl; thread = new DerivedThread(); cout << "Created 2nd thread, starting..." << endl; thread->start(); cout << "Started 2nd thread" << endl; What is working great if I am only starting one of these Threads , but if I start multiple which should run together (not synced, only parallel) . But I discovered, that the thread is created, then as it tries to execute it (via start) the problem seems to block until the thread has closed. After that the next Thread is processed. I thought that pthread would do it unblocked for me, so what did I wrong? A sample output might be: Creating Thread [Thread] Thread Init Created thread, starting... [Thread] Created thread [Thread] exec_thread function in thread [Thread] Execute Thread executed Thread executed Thread executed Thread executed Thread executed Thread executed Thread executed .... Until Thread 1 is not terminated, a Thread 2 won't be created not executed. The process above is executed in an other class. Just for the information: I am trying to create a multi threaded server. The concept is like this: MultiThreadedServer Class has a main loop, like this one: ::inet::ServerSock *sock; //just a simple self made wrapper class for sockets DerivedThread *thread; for (;;) { sock = new ::inet::ServerSock(); this->Socket->accept( *sock ); cout << "Creating Thread" << endl; //Threads (according to code sample above) thread = new DerivedThread(sock); //I did not mentoine the parameter before as it was not neccesary, in fact, I pass the socket handle with the connected socket to the thread cout << "Created thread, starting..." << endl; thread->start(); cout << "Started thread" << endl; } So I thought that this would loop over and over and wait for new connections to accept. and when a new client arrives, I am creating a new thread and give the thread the connected socket as a parameter. In the DerivedThread::exec I am doing the handling for the connected client. Like: [...] do { [...] if (this-sock_-read( Buffer, sizeof(PacketStruc) ) 0) { cout << "[Handler_Base] Recv Packet" << endl; //handle the packet } else { Connected = false; } delete Buffer; } while ( Connected ); So I loop in the created thread as long as the client keeps the connection. I think, that the socket may cause the blocking behaviour. Edit: I figured out, that it is not the read() loop in the DerivedThread Class as I simply replaced it with a loop over a simple cout-usleep part. It did also only execute the first one and after first thread finished, the 2nd one was executed. Many thanks and best regards, Sebastian

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  • Oracle Linux at DOAG 2012 Conference in Nuremberg, Germany (Nov 20th-22nd)

    - by Lenz Grimmer
    This week, the DOAG 2012 Conference, organized by the German Oracle Users Group (DOAG) takes place in Nuremberg, Germany from Nov. 20th-22nd. There will be several presentations related to Oracle Linux, Oracle VM and related infrastructure (including a dedicated MySQL stream on Tue+Wed). Here are a few examples picked from the infrastructure stream of the schedule: Tuesday, Nov. 20th 10:00 - Virtualisierung, Cloud und Hosting - Kriterien und Entscheidungshilfen - Harald Sellmann, its-people Frankfurt GmbH, Andreas Wolske, managedhosting.de GmbH 14:00 - Virtual Desktop Infrastructure Implementierungen und Praxiserfahrungen - Björn Rost, portrix Systems GmbH 15:00 - Oracle Linux - Best Practices und Nutzen (nicht nur) für die Oracle DB - Manuel Hoßfeld, Lenz Grimmer, Oracle Deutschland 16:00 - Mit Linux Container Umgebungen effizient duplizieren - David Hueber, dbi services sa Wednesday, Nov. 21st 09:00 - OVM 3 Features und erste Praxiserfahrungen - Dirk Läderach, Robotron Datenbank-Software GmbH 09:00 - Oracle VDI Best Practice unter Linux - Rolf-Per Thulin, Oracle Deutschland 10:00 - Oracle VM 3: Was nicht im Handbuch steht... - Martin Bracher, Trivadis AG 12:00 - Notsystem per Virtual Box - Wolfgang Vosshall, Regenbogen AG 13:00 - DTrace - Informationsgewinnung leicht gemacht - Thomas Nau, Universität Ulm 13:00 - OVM x86 / OVM Sparc / Zonen und co. - Bertram Dorn, Oracle Deutschland Thursday, Nov. 22nd 09:00 - Oracle VM 3.1 - Wie geht's wirklich? - Manuel Hoßfeld, Oracle Deutschland, Sebastian Solbach, Oracle Deutschland 13:00 - Unconference: Oracle Linux und Unbreakable Enterprise Kernel - Lenz Grimmer, Oracle Deutschland 14:00 - Experten-Panel OVM 3 - Björn Bröhl, Robbie de Meyer, Oracle Corporation 14:00 - Wie patcht man regelmäßig mehrere tausend Systeme? - Sylke Fleischer, Marcel Pinnow, DB Systel GmbH 16:00 - Wo kommen denn die kleinen Wolken her? OVAB in der nächsten Generation - Marcus Schröder, Oracle Deutschland On a related note: if you speak German, make sure to subscribe to OLIVI_DE - Oracle LInux und VIrtualisierung - a German blog covering topics around Oracle Linux, Virtualization (primarily with Oracle VM) as well as Cloud Computing using Oracle Technologies. It is maintained by Manuel Hoßfeld and Sebastian Solbach (Sales Consultants at Oracle Germany) and will also include guest posts by other authors (including yours truly).

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  • Windows Server Backup fails to backup Hyper-V VM with "Access is denied"

    - by Sebastian Krysmanski
    I'm trying to use Windows Server Backup on my Windows Server 2012 box to backup my Hyper-V VMs. I created a backup job but each job ends with some "Access is denied" errors. One of my VMs (Linux Server) is backed up properly. All others (one Windows 8, one Linux) are not (or at least it seems that way from the looks of the log file below). How can I solve this problem? Here's the log I'm getting: Error in backup of D:\ during read: Error [0x80070005] Access is denied. Application backup Writer Id: {66841CD4-6DED-4F4B-8F17-FD23F8DDC3DE} Component: C435964E-C07A-4958-BA73-A04C6583280F Caption : Backup Using Saved State\Alter Server Logical Path: Error : 8078010E Error Message : Copy of the files failed. Detailed Error : 80070005 Detailed Error Message : (null) Writer Id: {66841CD4-6DED-4F4B-8F17-FD23F8DDC3DE} Component: E780F138-9676-42FB-821C-4561B9B263DC Caption : Backup Using Child Partition Snapshot\Windows 8 Logical Path: Error : 8078010E Error Message : Copy of the files failed. Detailed Error : 80070005 Detailed Error Message : (null) Writer Id: {66841CD4-6DED-4F4B-8F17-FD23F8DDC3DE} Component: Host Component Caption : Host Component Logical Path: Error : 8078010E Error Message : Copy of the files failed. Detailed Error : 80070005 Detailed Error Message : (null)

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  • ffmpeg XDCAM HD vtag profiles

    - by sebastian
    Hey guys sorry for disturbing you again, but these days I have a lot of work to do with ffmpeg. I found on http://code.google.com/p/ffmbc/wiki/XDCAMHD422Encoding vtag settings for XDCAM HD 422 and used them in my script, everything works fine for HD 422, now I am desperately searching for normal HD vtags and have found only one so far was xd3v for Apple XDCAM HD 1080i50 (35 Mb/s VBR) which I don't need because its interlaced. What I need are the vtags for 1080p24, 1080p25 and 1080p30. Here is the script I have found and adapted a bit: ffmpeg -threads "4" -i "$2" -pix_fmt yuv420p -vtag xdv3 -vcodec mpeg2video -r 25 -flags +ildct+ilme -top 1 -dc 10 -intra_vlc 1 -non_linear_quant 1 -qmin 1 -qmax 3 -lmin '1*QP2LAMBDA' -rc_max_vbv_use 1 -rc_min_vbv_use 1 -b 35000k -minrate 35000k -maxrate 35000k -bufsize 36408333 -bf 2 -aspect 16:9 -acodec pcm_s16be -vf scale=${FC_PARAM_width}:${FC_PARAM_height} "$3" If there are any other mistakes in the script, please correct me :)

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  • How can I have my Windows keymap on Mac?

    - by Sebastian Hoitz
    On Mac, to get a "{" for example, you have to press OPTION key plus 8 to get a curly brace. But on Windows it is ALT-GR plus 7. Another example: On Windows I can press CTRL and Backspace to remove one whole word. On Mac it is OPTION + Backspace. Is there a way I can remap these Mac-driven behavior to be more Windows-like? Because this is, as a very long Windows user, a big burden on me to have such a different keyboard layout. Edit: I'm using a german keyboard layout.

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  • PPTP network for server backend LAN?

    - by Sebastian Hoitz
    Here is our problem: We have several webservers, which should be reached from public. The database servers that store the data for the web apps on those webservers though shall not have a public IP. So, since I want to be able to connect to the SQL servers using ssh for example, and those servers need to talk with each other, I had this idea: Internet | ------------------ | | Webserver 1 Webserver 2 Database Server | | | -------------- vLAN -------------- | PPTP | Workstation (my PC) My idea was that I can connect to the vLAN using PPTP so that I have access to all servers in that LAN, but the database server remains unvisible to the public. Is this infrastructure a good idea?

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