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  • Windows 8: How to Lock (not sleep) laptop on lid close?

    - by Eye of Hell
    If my laptop is connected to power source and is not configured to sleep on lid close (it is connected to power source and is working, i don't want it to sleep. It's compiling my code) if i close the lid, laptop will do nothing. This works as expected, but actually if i have my laptop connected to power source in the office it will be good to lock it if i close a lid. So no one can just open the lid and see my unlocked desktop. I searched google and it says thet correct use case is to manually lock laptop via Win + L every time before lid is closed. This is ok, but not very secure - after all, i can forget Win + L. Is t any easy way (maybe some registry value or app) to configure windows laptop so it will lock on lid close even without sleep? Of course i can write app / powershell script for this task, but this is not suitable for non-programmers end users.

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  • Working in Germany (Munich) [closed]

    - by adri
    My husband and I are relocating to Munich in August (He's German). I have been looking for jobs online since I heard that software developers are in great demand. And by the looks of it, seems to be correct. There are lots of offers on line but I have a problem, my german is not spectacular. I would rate it as basic. Good to be a tourist but not good to write anything formal, not even my cover letter. So I was wondering how hard is really going to be to find a job for me with virtually no german (I'm studying, but good german is not going to happen over night). Also, would it be possible to secure a job before arriving to Germany? I have nearly 10 years of working experience developing software, mostly in .net (c#, vb, winForms, asp.net) but I also know java. 3 years experience as a team leader for groups of up to 8 people. In the last couple of years I've been working mostly on digitalization of documents (such as birth certificates and the like) but I'm more than willing to try other fields Also I speak English, Spanish, Italian, a bit of portuguese and of course a bit of german.

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  • Recommend a desktop app to monitor port 80 on servers

    - by busyone
    Hello, I did some googling but was unsuccessful, so I am posting here. I am looking to get an app (preferably free/open source) to monitor my servers on port 80 that would send me an email/text when some predefined timeout triggers. I could probably write something in VB to do this but i am burried with projects, why reinvent the wheel. I know there are services out there that want you to pay $5/month to do so, I was thinking about a Windows app that would sit on my computer and simply monitor predefined list of IPs on port 80. Thanks!

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  • What is the best way to browse the web safely? [closed]

    - by cedivad
    At the recent pwnown we saw every single browser, from IE to Chrome, miserably hacked. That scares me. How should we browse the Internet safely but continuing to enjoy it? (using lynx is not an option) Virtual machines? Different users with non-administrative privileges? Keep the work and "Facebook" on 2 separate machines? (or on 2 hard disks, invisible each other?) I think that they should write a book on the matter.

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  • File filtering_Python 3.2 [closed]

    - by user71261
    I'm trying to write a short file filtering code in Python that will find my desired string. I've got it worked out logically, but my Command Feed is sending me an error message for the print statement. This is how it works as of now: filename = input('give file name: ') n = input('give desired string: ') f = open line = f.readline() while line: if n in line: print line line = f.readline() Error Statement: Traceback (most recent call last): File "<string>", line 7, in <fragment> Syntax Error: print line: <string>, line 718 I know this is a simple problem but the answer is not obvious to me. please help.

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  • CentOS I/O blocking flushing dirtypages

    - by user3662224
    I have an Apache webserver on CentOS. It is not doing anything fantastic or complicated at all but it does at intervals experience a high load (120 for 4 CPUs) for some reason. During this time I see high waits and write durations. I have narrowed this down to flushing of dirtypages to disk to make room for new data. I have tried many things and talked to the developers who are also puzzled by this. I am stumped. Details: vmware virtual guest server 4 cpus 12G RAM Apache PHP I have 40 servers in this cluster that share the same disk structure. Only the webservers are experiencing this issue. Any ideas?

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  • Turn "log slow queries" ON.

    - by CodedK
    Hello, I'm trying to log mysql slow queries, but I can't turn it on. I will explain all my steps: Open and Edit my.cnf and add the following lines: long_query_time = 5 slow_query_log_file = /myfolder/slowq.log log_slow_queries = 1 =(I have MySQL 5.0.7) Give mysql user permitions to write on the file: chown -R mysql:mysql /var/lib/mysql Create the file: touch /myfolder/slowq.log Chmod for this file to 777. service mysqld restart From MySQL Admin Panel I can see that the "log_slow_queries" var is OFF! Also no logs are created. Thanks in advance! Best Regards, Panos.

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  • preventing changes to a cell in google spreadsheet [migrated]

    - by A B
    I want to prevent changes to column K in google spreadsheet. Whatever value is there, I do not want it changed. I do not like the protection feature as it makes what I consider an ugly display. My code. Unfortunately, it does absolutely nothing. The intent was to take whatever the current value is in the cell, save it, and then write it back on exit of the cell instead of saving whatever changes might have been made to the cell. The cell will either be blank to start, or will already have been modified to contain a date & time. Whatever the current contents blank or not, it should retain the same value after leaving the cell. function onEdit() { var s = SpreadsheetApp.getActiveSheet(); var r = s.getActiveCell(); var columnNum=r.getColumn() // if column is K then prevent any changes if (columnNum == 11) { var dateCell = s.getRange(r.getRow(), 11); var v=dateCell.getValue(); dateCell.setValue(v); } };

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  • Web Host which provides Latex and embedded programming [duplicate]

    - by Polymer
    This question already has an answer here: How to find web hosting that meets my requirements? 5 answers Hopefully this is a reasonable place to ask this question. I'll confess I'm a little green when it comes to web programming and websites in general (though not programming). I'm a Math and Physics person. I want to make a personal webpage containing a Math and Physics blog. Ideally the blog should support latex, and embedded programs. This would allow me to write, say, an equation for an orbit and then show what the orbit would look like (perhaps letting the reader configure parameters). The programming language can be javascript (though it isn't my favorite language). My budget is around 5 dollars a month. Does anybody have suggestions for a good Shared host with these kind of requirements? And a small aside, It would be useful if I can move the website content, since I might live at a university in the nearish future. They would have servers which could support such a webpage.

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  • Xubuntu 12.04: Slow Login

    - by naxchange
    I'm running Xubuntu 12.04, and after I ran the update, my login started slowing down big time. I've dabbled a little bit with the programs in Settings - Settings Manager - Session and Startup, and tried closing and opening these programs, and then rebooting. Anyways, I narrowed it down to a combination of 2 processes, "Network" (the connection manager) and "Xfce Volume Daemon". Their corresponding terminal commands are: ~$ nm-applet ~$ xfce4-volumed If I disable them, and then run them after login is complete, everything works just fine. Is there a way for me to run these commands automatically at start up? I want to maybe write a shell script and save it somewhere, or at least edit the order things happen after login, so the desktop can load before these processes. Hope I've been clear enough, and thanks in advance! NAX

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  • C programming multiple storage backends

    - by ahjmorton
    I am starting a side project in C which requires multiple storage backends to be driven by a particular piece of logic. These storage backends would each be linked with the decision of which one to use specified at runtime. So for example if I invoke my program with one set of parameters it will perform the operations in memory but if I change the program configuration it would write to disk. The underlying idea is that each storage backend should implement the same protocol. In other words the logic for performing operations should need to know which backend it is operating on. Currently the way I have thought to provide this indirection is to have a struct of function pointers with the logic calling these function pointers. Essentially the struct would contain all the operations needed to implement the higher level logic E.g. struct Context { void (* doPartOfDoOp)(void) int (* getResult)(void); } //logic.h void doOp(Context * context) { //bunch of stuff context->doPartOfDoOp(); } int getResult(Context * context) { //bunch of stuff return context->getResult(); } My questions is if this way of solving the problem is one a C programmer would understand? I am a Java developer by trade but enjoy using C/++. Essentially the Context struct provides an interface like level of indirection. However I would like to know if there is a more idiomatic way of achieving this.

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  • Possible to run system-config-network during %post kickstart?

    - by tore-
    Hello, I'm currently trying to figure out a smart way to set IP, hostname, gateway and DNS settings during a kickstart (with user input during the kickstart). Doing this with firstboot after the install is not acceptable, so this must be done during %post. I've tried to run the system-config-network tool during post in tty6: #!/bin/sh chvt 6 exec < /dev/tty6 > /dev/tty6 /usr/bin/system-config-network-tui This doesn't work since for some reason I'm unable to catch user input. I would prefer to use built in tools to change this during post, rather than write my own bash script to do this, since using the provided tools is less likely to break anything. Does someone done anything like this or similar, and made it work? Thanks

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  • Unable to use strong encryption

    - by user224299
    So I am exploring Apache to create a simple example: the default page and a directory "secure". I everyone to be able to access the server but, when one wants to access the "secure" directory, I the connection to use strong encryption. I am using apache2.4. However this is not working and I don't know why! I have done just like in the Apache tutorial: LoadModule ssl_module /usr/lib/apache2/modules/mod_ssl.so <VirtualHost *:443> SSLEngine on SSLCertificateFile /home/vitorpereira/Desktop/cert.cer SSLCertificateKeyFile /home/vitorpereira/Desktop/key.key </VirtualHost> SSLCipherSuite ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL <Location /var/www/html/secure> SSLCipherSuite HIGH:!aNULL:!MD5 </Location> But this does not work :/ And, I can access the secure folder with http but when I write https, it says not found!

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  • Attempt at Merge Sort: Is this correct? [migrated]

    - by Beatrice
    I am trying to write a merge sort algo. I can't tell if this is actually a canonical merge sort. If I knew how to calculate the runtime I would give that a go. Does anyone have any pointers? Thanks. public static void main(String[] argsv) { int[] A = {2, 4, 5, 7, 1, 2, 3, 6}; int[] L, R; L = new int[A.length/2]; R = new int[A.length/2]; int i = 0, j = 0, k; for (k = 0; k < A.length; k++) { if (k < A.length/2) { L[i] = A[k]; i++; } else { R[j] = A[k]; j++; } } i = 0; j = 0; for (k = 0; k < A.length; k++) { System.out.println(i + " " + j + " " + k); if (i < L.length && j < R.length) { if (L[i] < R[j]) { A[k] = L[i]; i++; } else { A[k] = R[j]; j++; } } } }

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  • Java EE 6?????????????????! ?Java EE?????“????”??????????Java EE 6????????·????????????????????

    - by ???02
    ?Java EE????????????????Java EE 6????????????????????????Java EE 6??????????·????????????????????????????????????????????????????????????????Java EE 6????????·??????????????????Java EE??????????????????Java EE 6?????WebLogic Server 12c?GlassFish 3.x????????????????????????????/????????????????????????????????????????????????????(????) ?Java EE?????“???”?????????????????! ?????? ?????????????? ????????????????????????? ????&IT????????????????? ??????????????????? Java EE?????????·?????????????????????????????J2EE 1.4??Java EE??????????/?????????????????????????????????????????????Java EE??????5???????????????????????????????????????Java EE????????????????????????? ?????????????????????????????????????????????????????????????????????????????????Java EE?????????????????????????????????????Java EE????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????Java EE 6????????·???????????????? ?????????????????????Java EE????????????????????Java EE??????????????????????????????????????????????????·????????????????????Java EE 6????????·???????????????????????????????????????????Java EE 6????????????????????????????????????????????/????????????(?????????????? ????????????????????????? ????&IT????????????????? ?????????????)?? ??????????????????????????????????Java EE 6????????·??????????????????????????????????????????Java EE???????Java EE 6??????????Java EE 6?????????????·?????????????????????????????????????????????????????????????1????(???) ??????????????????? ??????????Java EE 6????????·???????????????Java EE?????????“????”???Java EE 6???????????????????????????????????????????????????? ????????????????????????Java?????(JVM)?????????????????????????????????????????????????????????????????????????????????????64?????????????????·???????????????????????? ????WebLogic Server 12c????????????????JRockit Flight Recorder????????????????????????????????????????????????????????????????Java EE 6?????????????????????????? ?????????Java EE??????????????????????·??????? ??????????????????????????????????????????????Java EE????????????????·????????????????????????????????????????????·????????????????????????? ????????????“Write Once, Run Anywhere”??????????????????????????????·?????????????????????????????·??????????????????????????????????(???) ?????Java????????·??????? ?????????????????????????????????????SIer?????????????????????Java EE???????????????????????????????Java EE????????·??????????????????????? ????????Java???????????????????????????????????????????????????Java???????????????????????????????????????????????????? ??????/????????????????????????????????????????????????????????????????????? ?????????????Java?????????????????????????????????????Java EE??????????·??????????????????????????????????????????·????????????????????????????????????????????????????????????????????????????????????????????(???) ???Java EE 6??????????????????? ?????Java EE?????????????????????????????Java EE 6????????·????????????????????????????????????J2EE 1.3?J2EE 1.4??????????????????????????????????????? ?2000?????J2EE????????????????????????????????????????SIer??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(???) ?????????????????????????????????????Java EE 6?????????????????????????????????Java EE 6????????·????????????????????????????????????????????????Java EE?????????????????????????????????????????????

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  • C# SOCKS proxy service for HTTP requests

    - by Ed
    I'm trying to build a service that will forward HTTP requests from agents like a browser to the Tor service. Problem is, the Tor service only accepts SOCKS4a connections. So my solution is to listen for HTTP requests, get the URL they're requesting, and make a request via Tor with the help of the Starksoft.Net.Proxy library. Then return the response. The library kind of works, but I'm not happy. It returns HTTP headers with the response and it can't handle images. So the responses are messed up. How could I improve my code? I'm very new to network programming. Sorry for the long example. public AnonymiserService(ILogger logger) { try { _logger = logger; _logger.Log("Listening on port {0}...", Properties.Settings.Default.ListeningPort); StartListener(new string[] { string.Format("http://*:{0}/", Properties.Settings.Default.ListeningPort) }); } catch (Exception ex) { _logger.LogError("Exception!", ex); } } private void StartListener(string[] prefixes) { if (!HttpListener.IsSupported) { _logger.LogError("HttpListener isn't supported on this machine!"); return; } HttpListener listener = new HttpListener(); foreach (string s in prefixes) listener.Prefixes.Add(s); while (true) { listener.Start(); IAsyncResult result = listener.BeginGetContext(new AsyncCallback(ListenerCallback), listener); result.AsyncWaitHandle.WaitOne(); } } private void ListenerCallback(IAsyncResult result) { try { // Get HTTP request HttpListener listener = (HttpListener)result.AsyncState; HttpListenerContext context = listener.EndGetContext(result); _logger.Log("Retrieving [{0}]", context.Request.RawUrl); // Create connection // Use Tor as proxy IProxyClient proxyClient = new Socks4aProxyClient("localhost", 9050); TcpClient tcpClient = proxyClient.CreateConnection(context.Request.UserHostName, 80); // Create message // Need to set Connection: close to close the connection as soon as it's done byte[] data = Encoding.UTF8.GetBytes(String.Format("GET {0} HTTP/1.1\r\nHost: {1}\r\nConnection: close\r\n\r\n", context.Request.Url.PathAndQuery, context.Request.UserHostName)); // Send message NetworkStream ns = tcpClient.GetStream(); ns.Write(data, 0, data.Length); // Pass on HTTP response HttpListenerResponse responseOut = context.Response; if (ns.CanRead) { byte[] buffer = new byte[32768]; int read = 0; string responseString = string.Empty; // Read response while ((read = ns.Read(buffer, 0, buffer.Length)) > 0) { responseString += Encoding.UTF8.GetString(buffer, 0, read); } // Remove headers if (responseString.IndexOf("HTTP/1.1 200 OK") > -1) responseString = responseString.Substring(responseString.IndexOf("\r\n\r\n")); // Forward response byte[] byteArray = Encoding.UTF8.GetBytes(responseString); responseOut.OutputStream.Write(byteArray, 0, byteArray.Length); } // Close streams responseOut.OutputStream.Close(); ns.Close(); // Close connection tcpClient.Close(); _logger.Log("Retrieved [{0}]", context.Request.RawUrl); } catch (Exception ex) { _logger.LogError("Exception in ListenerCallback!", ex); } }

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  • delayed job problem in rails.

    - by krunal shah
    My controller data_files_controller.rb def upload_balances DataFile.load_balances(params) end My model data_file.rb def self.load_balances(params) # Pull the file out of the http request, write it to file system name = params['Filename'] directory = "public/uploads" errors_table_name = "snapshot_errors" upload_file = File.join(directory, name) File.open(upload_file, "wb") { |f| f.write(params['Filedata'].read) } # Remove the old data from the table Balance.destroy_all ------ more code----- end It's working fine. Now i want to use delayed job with my controller to call my model action like .. My controller data_files_controller.rb def upload_balances DataFile.send_later(:load_balances,params) end Is it possible?? What's the other way to do it? Is it create any problem? With this send_later i am getting this error in column last_error in delayed_job table. uninitialized stream C:/cyncabc/app/models/data_file.rb:12:in read' C:/cyncabc/app/models/data_file.rb:12:inload_balances' C:/cyncabc/app/models/data_file.rb:12:in open' C:/cyncabc/app/models/data_file.rb:12:inload_balances' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/performable_method.rb:35:in send' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/performable_method.rb:35:inperform' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/backend/base.rb:66:in invoke_job' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:120:inrun' c:/ruby/lib/ruby/1.8/timeout.rb:62:in timeout' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:120:inrun' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/core_ext/benchmark.rb:10:in realtime' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:119:inrun' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:180:in reserve_and_run_one_job' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:104:inwork_off' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:103:in times' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:103:inwork_off' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:78:in start' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/core_ext/benchmark.rb:10:inrealtime' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:77:in start' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:74:inloop' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/worker.rb:74:in start' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/command.rb:93:inrun' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/command.rb:72:in run_process' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/application.rb:215:incall' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/application.rb:215:in start_proc' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/application.rb:225:incall' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/application.rb:225:in start_proc' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/application.rb:255:instart' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/controller.rb:72:in run' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons.rb:188:inrun_proc' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/cmdline.rb:105:in call' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons/cmdline.rb:105:incatch_exceptions' c:/ruby/lib/ruby/gems/1.8/gems/daemons-1.0.10/lib/daemons.rb:187:in run_proc' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/command.rb:71:inrun_process' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/command.rb:65:in daemonize' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/command.rb:63:intimes' c:/ruby/lib/ruby/gems/1.8/gems/delayed_job-2.0.3/lib/delayed/command.rb:63:in `daemonize' script/delayed_job:5 Without send_later it's working fine... Is there any solution?

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  • Random Access Violation Exception in WPF Application

    - by PT1984
    Hi, I am facing weird problem while running regression tests on my WPF Application. I am getting AccessViolationException with different stacktraces each time. First : Message :Attempted to read or write protected memory. This is often an indication that other memory is corrupt. StackTrace : at MS.Win32.PresentationCore.UnsafeNativeMethods.MILUnknown.Release(IntPtr pIUnkown) at MS.Win32.PresentationCore.UnsafeNativeMethods.MILUnknown.ReleaseInterface(IntPtr& ptr) at System.Windows.Media.SafeMILHandle.ReleaseHandle() at System.Runtime.InteropServices.SafeHandle.InternalFinalize() at System.Runtime.InteropServices.SafeHandle.Dispose(Boolean disposing) at System.Runtime.InteropServices.SafeHandle.Finalize() Source :PresentationCore Type : System.AccessViolationException. Second : Message :Attempted to read or write protected memory. This is often an indication that other memory is corrupt. StackTrace : at MS.Win32.PresentationCore.UnsafeNativeMethods.IMILBitmapEffect.GetOutput(SafeHandle THIS_PTR, UInt32 uiIndex, SafeMILHandle pContext, BitmapSourceSafeMILHandle& ppBitmapSource) at System.Windows.Media.Effects.BitmapEffect.GetOutput(SafeHandle unmanagedEffect, Int32 index, BitmapEffectRenderContext context) at System.Windows.Media.Effects.BitmapEffect.GetOutput(BitmapEffectInput input) at System.Windows.Media.Effects.BitmapEffectState.GetEffectOutput(Visual visual, RenderTargetBitmap& renderBitmap, Matrix worldTransform, Rect windowClip, Matrix& finalTransform) at System.Windows.Media.Effects.BitmapEffectVisualState.RenderBitmapEffect(Visual visual, Channel channel) at System.Windows.Media.Effects.BitmapEffectContent.ExecuteRealizationsUpdate() at System.Windows.Media.RealizationContext.RealizationUpdateSchedule.Execute() at System.Windows.Media.MediaContext.Render(ICompositionTarget resizedCompositionTarget) at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) at System.Windows.Media.MediaContext.AnimatedRenderMessageHandler(Object resizedCompositionTarget) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at Main() Source :PresentationCore Type :System.AccessViolationException In Application Event Log I found following entries : Dispatcher processing has been suspended, but messages are still being processed. Faulting application **.exe, version 1.0.0.*, stamp 4c08d288, faulting module wpfgfx_v0300.dll, version 3.0.6920.1427, stamp 488f3056, debug? 0, fault address 0x0012ec36. My Application uses Dispatcher from another thread, to change the values of the controls , enable - disable those, change visibility etc., the thred is run multiple times in a second. Please let me know if anybody has faced this problem? Thanks in advance, -Prasad

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  • Small performance test on a web service

    - by vtortola
    Hi, I'm trying to develop a small application that test how many requests per second can my service support but I think I'm doing something wrong. The service is in an early development stage, but I'd like to have this test handy in order to check in time to time I'm not doing something that decrease the performance. The problem is that I cannot get the web server or the database server go to the 100% of CPU. I'm using three different computers, in one is the web server (WinSrv Standard 2008 x64 IIS7), in other the database (Win 2K - SQL Server 2005) and the last is my computer (Win7 x64 ultimate), where I'll run the test. The computers are connected through a 100 ethernet switch. The request POST is 9 bytes and the response will be 842 bytes. The test launches several threads, and each thread has a "while" loop, in each loop it creates a WebRequest object, performs a call, increment a common counter and waits between 1 and 5 millisencods, then it do it again: static Int32 counter = 0; static void Main(string[] args) { ServicePointManager.DefaultConnectionLimit = 250; Console.WriteLine("Ready. Press any key..."); Console.ReadKey(); Console.WriteLine("Running..."); String localhost = "localhost"; String linuxmono = "192.168.1.74"; String server= "192.168.1.5:8080"; DateTime start = DateTime.Now; Random r = new Random(DateTime.Now.Millisecond); for (int i = 0; i < 50; i++) { new Thread(new ParameterizedThreadStart(Test)).Start(server); Thread.Sleep(r.Next(1, 3)); } Thread.Sleep(2000); while (true) { Console.WriteLine("Request per second :" + counter/DateTime.Now.Subtract(start).TotalSeconds ); Thread.Sleep(3000); } } public static void Test(Object ip) { Guid guid = Guid.NewGuid(); Random r = new Random(DateTime.Now.Millisecond); while (true) { String test = "<lalala/>"; WebRequest req = WebRequest.Create("http://" + (String)ip + "/WebApp/"+guid.ToString()+"/Data/Tables=whatever"); req.Method = "POST"; req.ContentType = "application/xml"; req.Credentials = new NetworkCredential("aaa", "aaa","domain"); Byte[] array = Encoding.UTF8.GetBytes(test); req.ContentLength = array.Length; using (Stream reqStream = req.GetRequestStream()) { reqStream.Write(array, 0, array.Length); reqStream.Close(); } using (Stream responseStream = req.GetResponse().GetResponseStream()) { String response = new StreamReader(responseStream).ReadToEnd(); if (response.Length != 842) Console.Write(" EEEE "); } Interlocked.Increment(ref counter); Thread.Sleep(r.Next(1,5)); } } If I run the test neither of the computers do an excesive CPU usage. Let's say I get a X requests per second, if I run the console application two times at the same moment, I get X/2 request per second in each one... but still the web server is on 30% of CPU, the database server on 25%... I've tried to remove the thread.sleep in the loop, but it doesn't make a big difference. I'd like to put the machines to the maximun, to check how may requests per second they can provide. I guessed that I could do it in this way... but apparently I'm missing something here... What is the problem? Kind regards.

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  • Loop through values and display in a pdf file

    - by chupinette
    Hello all! i have written the following code: As you can see there is a for loop to go through some values and display them in the generated pdf. The problem is that all the values are being written at the same place. I have tried to insert a new line but it does not seem to work. Can anyone suggest me how i can do it? Do i need to write a nested for loop so that it the values at different y positions? $pdf = pdf_new(); // open a file pdf_open_file($pdf, "C:/xampp/htdocs/final/6.pdf"); pdf_set_info($pdf, "Author", ""); pdf_set_info($pdf, "Title", ""); pdf_set_info($pdf, "Creator", ""); pdf_set_info($pdf, "Subject", ""); // start a new page (A4) $x = 595; $y = 842; pdf_begin_page($pdf, $x, $y); pdf_set_parameter($pdf, 'FontOutline', 'Arial=c:\windows\fonts\arial.ttf'); pdf_setcolor($pdf, "stroke", "rgb", 0, 0, 0, 1.0); // get and use a font object $font = pdf_findfont($pdf, "Arial", "host", 1); pdf_setfont($pdf, $font, 10); // print text pdf_show_xy($pdf, "QUOTATION" , 250, $y - 60); pdf_show_xy($pdf, "Customer Name: " . $this->customer_details['first_name'] . " " . $this->customer_details['last_name'], 50, 770); pdf_show_xy($pdf, "Date: " . date("F j, Y, g:i a"), 50, 750); pdf_show_xy($pdf, "Number of items requested: " . $count_items_req, 50, 730); pdf_show_xy($pdf, "Number of items found: " . $count_items_found, 50, 710); // add an image under the text $image = $image = PDF_load_image($pdf, "png", "C:/xampp/htdocs/final/images/footer_logo.png", ""); PDF_fit_image($pdf, $image, 50, 785, ""); pdf_moveto($pdf, 20, 780); pdf_lineto($pdf, 575, 780); pdf_stroke($pdf); // draw another line near the bottom of the page pdf_moveto($pdf, 20, 50); pdf_lineto($pdf, 575, 50); pdf_stroke($pdf); //Draw the lines $offset = 184; $i = 0; pdf_moveto($pdf, 20, $y - 160); pdf_lineto($pdf, $x - 20, $y - 160); pdf_stroke($pdf); pdf_moveto($pdf, $x - 400, $y - 160); pdf_lineto($pdf, $x - 400, 80); pdf_stroke($pdf); pdf_moveto($pdf, $x - 200, $y - 160); pdf_lineto($pdf, $x - 200, 80); pdf_stroke($pdf); pdf_moveto($pdf, $x - 100, $y - 160); pdf_lineto($pdf, $x - 100, 80); pdf_stroke($pdf); pdf_continue_text($pdf, ''); pdf_continue_text($pdf, ''); pdf_show_xy($pdf, "Searched Item", 70, $y - 150); pdf_show_xy($pdf, "Searched Item", 70, $y - 150); pdf_show_xy($pdf, "Item name", 240, $y - 150); pdf_show_xy($pdf, "Item name", 240, $y - 150); pdf_show_xy($pdf, "Price", $x - 180, $y - 150); pdf_show_xy($pdf, "Price", $x - 180, $y - 150); pdf_show_xy($pdf, "Discounted Price", $x - 100, $y - 150); pdf_show_xy($pdf, "Discounted Price", $x - 100, $y - 150); for ($i = 0; $i < count($this->quotation_details); $i++) { pdf_show_xy($pdf, $this->quotation_details[$i]['name_searched'] , 70, $y - 500); } // and write some text under it pdf_show_xy($pdf, "", 250, 35); // end page pdf_end_page($pdf); // close and save file pdf_close($pdf);

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  • Edit and render RichText

    - by OregonGhost
    We have an application (a custom network management tool for building automation) that supports printing labels that you can cut out and insert into the devices' front displays. In earlier versions of the tool (not developed in my company), the application just pushed the strings into an Excel file that the field technician could then manipulate (like formatting text). We didn't do this in the new version because it was hard (impossible) to keep the Excel file in sync, and to avoid a binding to an external application (let alone different versions of Excel). We're using PDFSharp for rendering the labels. It has a System.Drawing-like interface, but can output to a System.Drawing.Graphics (screen / printer) as well as to a PDF file, which is a requirement. Later, basic formatting was introduced like Font Family, Style, Size, Color which would apply to one label (i.e. to exactly one string). Now the customer wants to be able to apply these formats to single characters in a string. I think the easiest way would be to support a subset of RichText. It's not as easy as I thought though. Currently the editor just displays a TextBox for the label you want to edit, with the font set to the label's font. I thought I'd just replace it with RichTextBox, and update the formatting buttons to use the RichTextBox formatting properties. Fairly easy. However, I need to draw the text. I know you can get the RichTextBox to draw to a HDC or System.Drawing.Graphics - but as already said, I need it to use PDFSharp. Rendering to bitmaps is not an option, since the PDF must not be huge, and it's a lot of labels. Unfortunately I couldn't get the RichTextBox to tell me the layout of the text - I'm fine with doing the actual rendering by hand, as long as I know where to draw what. This is the first question: How can I get the properly layouted metrics of the rich text out of a RichTextBox? Or is there any way to convert the rich text to a vector graphics format that can be easily drawn manually? I know about NRTFTree which can be used to parse and manipulate RichText. The documentation is bad (actually I don't know, it's Spanish), but I think I can get it to work. As far as I understood, it won't provide layouting as well. Because of this, I think I'll have to write a custom edit control (remember, it's basically just one or two line labels with basic RTF formatting, not a full-fledged edit control - more like editing a textbox in PowerPoint) and write custom text layout logic that used PDFSharp rather than System.Drawing for drawing. Is there any existing, even if partial, solution available, either for the editing or for doing the layout manually (or both)? Or is there an entirely different approach I'm just not seeing? Bonus points if exporting the label texts as RTF into a CSV file, and then importing in Excel retains the formatting. For the editing part, I need it to work in Windows Forms. Other than that it's not Windows-Forms-related, I think.

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  • .NET SerialPort DataReceived event not firing

    - by Klay
    I have a WPF test app for evaluating event-based serial port communication (vs. polling the serial port). The problem is that the DataReceived event doesn't seem to be firing at all. I have a very basic WPF form with a TextBox for user input, a TextBlock for output, and a button to write the input to the serial port. Here's the code: public partial class Window1 : Window { SerialPort port; public Window1() { InitializeComponent(); port = new SerialPort("COM2", 9600, Parity.None, 8, StopBits.One); port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived); port.Open(); } void port_DataReceived(object sender, SerialDataReceivedEventArgs e) { Debug.Print("receiving!"); string data = port.ReadExisting(); Debug.Print(data); outputText.Text = data; } private void Button_Click(object sender, RoutedEventArgs e) { Debug.Print("sending: " + inputText.Text); port.WriteLine(inputText.Text); } } Now, here are the complicating factors: The laptop I'm working on has no serial ports, so I'm using a piece of software called Virtual Serial Port Emulator to setup a COM2. VSPE has worked admirably in the past, and it's not clear why it would only malfunction with .NET's SerialPort class, but I mention it just in case. When I hit the button on my form to send the data, my Hyperterminal window (connected on COM2) shows that the data is getting through. Yes, I disconnect Hyperterminal when I want to test my form's ability to read the port. I've tried opening the port before wiring up the event. No change. I've read through another post here where someone else is having a similar problem. None of that info has helped me in this case. EDIT: Here's the console version (modified from http://mark.michaelis.net/Blog/TheBasicsOfSystemIOPortsSerialPort.aspx): class Program { static SerialPort port; static void Main(string[] args) { port = new SerialPort("COM2", 9600, Parity.None, 8, StopBits.One); port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived); port.Open(); string text; do { text = Console.ReadLine(); port.Write(text + "\r\n"); } while (text.ToLower() != "q"); } public static void port_DataReceived(object sender, SerialDataReceivedEventArgs args) { string text = port.ReadExisting(); Console.WriteLine("received: " + text); } } This should eliminate any concern that it's a Threading issue (I think). This doesn't work either. Again, Hyperterminal reports the data sent through the port, but the console app doesn't seem to fire the DataReceived event. EDIT #2: I realized that I had two separate apps that should both send and receive from the serial port, so I decided to try running them simultaneously... If I type into the console app, the WPF app DataReceived event fires, with the expected threading error (which I know how to deal with). If I type into the WPF app, the console app DataReceived event fires, and it echoes the data. I'm guessing the issue is somewhere in my use of the VSPE software, which is set up to treat one serial port as both input and output. And through some weirdness of the SerialPort class, one instance of a serial port can't be both the sender and receiver. Anyway, I think it's solved.

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  • Using amCharts in Ruby on Rails

    - by Dexter
    I have followed this tutorial in order to use amChart and it worked with no problems , now I am trying to generate a chart with amCharts to show each user and the sign in count but i cant make it work because it not getting the data correctly, what i am missing here ? how can i show user email and sign_in_count ? Users_controller.rb class UsersController < ApplicationController load_and_authorize_resource def index @users = User.all respond_to do |format| format.html # index.html.erb format.json { render :json => @users } end end def show @user = User.find(params[:id]) end def new @user = User.new end def create @user = User.new(params[:user]) if @user.save flash[:notice] = 'A new user created successfully.' redirect_to users_path else flash[:error] = 'An error occurred please try again!' redirect_to users_path end end def edit @user = User.find(params[:id]) end def update @user = User.find(params[:id]) if @user.update_attributes(params[:user]) flash[:notice] = 'Profile updated' redirect_to users_path else render 'edit' end end def destroy @user = User.find(params[:id]) if current_user == (@user) flash[:error] = "Admin suicide warning: Can't delete yourself." else @user.destroy flash[:notice] = 'User deleted' redirect_to users_path end end def checkname if User.where('user_name = ?', params[:user]).count == 0 render :nothing => true, :status => 200 else render :nothing => true, :status => 409 end return end end Users_helper.rb module UsersHelper def convert_to_amcharts_json(data_array) data_array.to_json.gsub(/\"text\"/, "text").html_safe end end index.html.erb <div id="chartdiv" style="width: 100%; height: 400px;"></div> <script type="text/javascript"> var chart; var chartData = <%= convert_to_amcharts_json(@users) %>; AmCharts.ready(function () { // SERIAL CHART chart = new AmCharts.AmSerialChart(); chart.dataProvider = chartData; chart.categoryField = "email"; // the following two lines makes chart 3D chart.depth3D = 20; chart.angle = 30; // AXES // category var categoryAxis = chart.categoryAxis; categoryAxis.labelRotation = 90; categoryAxis.dashLength = 5; categoryAxis.gridPosition = "start"; // value var valueAxis = new AmCharts.ValueAxis(); valueAxis.title = "Most Active users"; valueAxis.dashLength = 5; chart.addValueAxis(valueAxis); // GRAPH var graph = new AmCharts.AmGraph(); graph.valueField = "sign_in_count"; graph.colorField = "color"; graph.balloonText = "<span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>"; graph.type = "column"; graph.lineAlpha = 0; graph.fillAlphas = 1; chart.addGraph(graph); // CURSOR var chartCursor = new AmCharts.ChartCursor(); chartCursor.cursorAlpha = 0; chartCursor.zoomable = false; chartCursor.categoryBalloonEnabled = false; chart.addChartCursor(chartCursor); // WRITE chart.write("chartdiv"); }); </script>

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  • NLP with greatly contrained input and abilities

    - by Mike F
    Hat in hand here. I'm a seasoned developer and I would be grateful for a bit of help. I don't have time to read or digest long intricate discussions on theoretical concepts around NLP (or go get my PHD). That said, I have read a few and it's a damn interesting field. The problem is I need real world solutions, for real world products, in real world time frames. The problem I'm having is right now I'm not sure what the right questions are to ask to get started implementing. I believe this is mostly related to vocabulary. I'll read somewhere, a blog post, a forum post, a whitepaper, and it says, I'm doing flooping with the blargy blarg method, and I go google flooping and blargy blarg, and I get references to more obscurity. It seemingly never ends. So, my question is multiphased. First, more generally, how do I become passingly educated on this quickly? Just in time educated. I only need to know what I need to know to take the next step. I've spent 20 years writing code. Explain quick. I'll get it. (I mean provide a reference to something that explains quickly of course). I'm happy to read the right book, but I don't want to read a book where I read the chapter introduction that explains what floopy floop is and then skip over the rest of the chapter with examples of floopy flooping (because now I get what it is). I also don't want to read a book that goes into too much detail with theoretical underpinnings or history. For example, the Jurafsky book seems like way more than I need: http://www.amazon.com/gp/product/0131873210. But I will read it if this is the right book to read. (It's also dang expensive!) I need the root node of the expedited learning tree here, if you will. Point me in the right direction and I'll be quite grateful. I'm expecting quite a lot of firehose drinking - I just need the right firehose. Second, what I need to do is take a single sentence, with a very reduced vocabulary, and get a grammar tree (sorry if this is the wrong terminology) that I can do something with. I know I could easily write this command line input style in c in a more conventional manner, but I need it to be way better than that. But I don't need a chatterbot either. What I'm doing needs to live in a constrained environment. I can't use Python (unfortunately). I can't ship with gigabytes of corpuses. I need any libraries I use to be in c/c++. If I have to write this myself, I will. Hopefully, it will be achievable considering the reduced problem set. Maybe, probably, that's just naive. If so, let me know. :-) Thanks in advance - Mike

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  • boost::asio::async_write problem

    - by user368831
    Hi, I'm trying to figure out how asynchronous reads and writes work in boost asio by manipulating the echo example. Currently, I have a server that should, when sent a sentence, respond with only the first word. However, the boost::asio::async_write never seems to complete even though the write handler is being called. Can someone please explain what's going on? Here's the code: #include <cstdlib> #include <iostream> #include <boost/bind.hpp> #include <boost/asio.hpp> using boost::asio::ip::tcp; class session { public: session(boost::asio::io_service& io_service) : socket_(io_service) { } tcp::socket& socket() { return socket_; } void start() { std::cout<<"starting"<<std::endl; boost::asio::async_read_until(socket_, buffer, ' ', boost::bind(&session::handle_read, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred)); } void handle_read(const boost::system::error_code& error, size_t bytes_transferred) { // std::ostringstream ss; // ss<<&buffer; char* c = new char[bytes_transferred]; //std::string s; buffer.sgetn(c,bytes_transferred); std::cout<<"data: "<< c<<" bytes: "<<bytes_transferred<<std::endl; if (!error) { boost::asio::async_write(socket_, boost::asio::buffer(c,bytes_transferred), boost::bind(&session::handle_write, this, boost::asio::placeholders::error)); } else { delete this; } } void handle_write(const boost::system::error_code& error) { std::cout<<"handling write"<<std::endl; if (!error) { } else { delete this; } } private: tcp::socket socket_; boost::asio::streambuf buffer; }; class server { public: server(boost::asio::io_service& io_service, short port) : io_service_(io_service), acceptor_(io_service, tcp::endpoint(tcp::v4(), port)) { session* new_session = new session(io_service_); acceptor_.async_accept(new_session->socket(), boost::bind(&server::handle_accept, this, new_session, boost::asio::placeholders::error)); } void handle_accept(session* new_session, const boost::system::error_code& error) { if (!error) { new_session->start(); new_session = new session(io_service_); acceptor_.async_accept(new_session->socket(), boost::bind(&server::handle_accept, this, new_session, boost::asio::placeholders::error)); } else { delete new_session; } } private: boost::asio::io_service& io_service_; tcp::acceptor acceptor_; }; int main(int argc, char* argv[]) { try { if (argc != 2) { std::cerr << "Usage: async_tcp_echo_server <port>\n"; return 1; } boost::asio::io_service io_service; using namespace std; // For atoi. server s(io_service, atoi(argv[1])); io_service.run(); } catch (std::exception& e) { std::cerr << "Exception: " << e.what() << "\n"; } return 0; } Thanks!

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