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• how can I kill a Linux process in java with SIGKILL Process.destroy() does SIGTERM

  - by ekeren

  In Linux when I run the destroy function on java.lang.Process object (Which is true typed java.lang.UNIXProcess ) it sends a SIGTERM signal to process, is there a way to kill it with SIGKILL?

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• GTK Menu Questions

  - by Lothar

  My application has some special requirements and i need to know if i can draw my own accelerator key description. Also is it possible to get a signal when the main menu is activated and one when it is left (either by selecting a menu option or clicking somewhere to close it).

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• Does Python/Scipy have a firls( ) replacement (i.e. a weighted, least squares, FIR filter design)?

  - by delicasso

  I am porting code from Matlab to Python and am having trouble finding a replacement for the firls( ) routine. It is used for, least-squares linear-phase Finite Impulse Response (FIR) filter design. I looked at scipy.signal and nothing there looked like it would do the trick. Of course I was able to replace my remez and freqz algorithsm, so…

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• Why is my slot not being called?

  - by Jen

  I have this class: class CustomEdit : public QTextEdit { Q_GADGET public: CustomEdit(QWidget* parent); public slots: void onTextChanged (); }; CustomEdit::CustomEdit(QWidget* parent) : QTextEdit(parent) { connect( this, SIGNAL(textChanged()), this, SLOT(onTextChanged())); } void CustomEdit::onTextChanged () { …

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• Python: Script works, but seems to deadlock after some time

  - by sberry2A

  I have the following script, which is working for the most part Link to PasteBin The script's job is to start a number of threads which in turn each start a subprocess with Popen. The output from each subprocess is as follows: 1 2 3 . . . n Done Bascially the subprocess is transferring 10M records from tables in one database to different…

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• Linux service and Source for cron job

  - by Sirish Kumar

  Hi, I am new to linux and writing a service in C++ which spawns multiple threads and I am starting the service by calling it from init.d, but how should I send the terminate signal to my application from the script , so that my service terminates all the threads and exits. And also where can I find the source code for any linux services.…

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• Running server-program from a .jar file

  - by skiwi

  I have created and am working on a server-application that monitors for specific folders and takes appropriate actions whenever files are being added. Now I come to the point where I want to be able to shutdown the program, for example for applying a patch. The server runs simply in a command prompt, how can I signal that I want to…

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• My app does not seem to find my button from the UI file

  - by Jason94

  What i did: create a project, edited the ui file with the designer tool, ran the project, everything is ok tried to add to my cppfile: connect( pushButton_bracketBegin, SIGNAL( clicked() ), this, SLOT( pushButton_bracketBeginAction() ) ); but i get the error "‘pushButton_bracketBegin’ was not declared in this scope". this is…

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• Real-time Java graph / chart library?

  - by Joonas Pulakka

  There was an earlier thread on Java graph or chart library, where JFreeChart was found to be quite good, but, as stated in its FAQ, it's not meant for real-time rendering. Can anyone recommend a comparable library that supports real-time rendering? Just some basic xy-rendering - for instance, getting a voltage signal from data…

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• CoreData : App crashes when deleting last instance created

  - by Leo

  Hello, I have a 2 tabs application. In the first one, I'm creating objects of the "Sample" and "SampleList" entities. Each sampleList contains an ID and a set of samples. Each sample contains a date and temperature property. In the second tab, I'm displaying my data in a tableView. I implemented the -…

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• breakpoint inside QComboBox subclass not working

  - by yan bellavance

  I have subclassed QComboBox to customize it for special needs. The subclass is used to promote QComboBoxes in a ui file from QtDesigner. Everything works except that when I put a break point in a slot, the program does not stop at the breakpoint. I do however know that it is being called from the result it…

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• Implementing a command line in perl

  - by abubacker

  I used Term::shellUI module and almost every thing is working as expected but the issue is when I pressed ctrl+c I want to print "Please use ctrl+d to exit the shell" , for that I handle the signal but the message print only after I pressed the new line how to resolve this ! Thanks in advance !

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• C#: My callback function gets called twice for every Sent Request

  - by Madi D.

  I've Got a program that uploads/downloads files into an online server,Has a callback to report progress and log it into a textfile, The program is built with the following structure: public void Upload(string source, string destination) { //Object containing Source and destination to pass to…

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• Disable logging during manage.py test?

  - by Eric Palakovich Carr

  I utilize the standard python logging module. When I call python manage.py test I'd like to disable logging before all the tests are ran. Is there a signal or some other kind of hook I could use to call logging.disable? Or is there some other way to disable logging when python manage.py test is ran?

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• How to debug PYGTK program

  - by Guillaum

  When python raise an exception in the middle of a pygtk signal handling callback, the exception is catched by the gtk main loop, its value printed and the main loop just continue, ignoring it. If you want to debug, with something like pdb (python -m pdb myscript.py), you want that when the exception…

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• Where should I put zoomIn in my MapActivity?

  - by Johny

  I'm writing an Android app, and I'd like to zoomIn as soon as the map has been loaded. I get the following error: java.lang.IllegalArgumentException: width and height must be > 0 This MapActivity - width and height must be > 0 question suggests the problem is the zoomIn() method is in the…

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• [C] glist.c: No such file or directory

  - by sterh

  Hello, I have c/gtk+ application and GList which filled three elements, when i try to run following code with gdb: if (g_list_length(mw->img_list) > 0) printf(">0"); else printf("<0"); i see: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread…

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• How can i fix this debugging error.

  - by Renjith G

  hi, I have an executable built in windows(exe).I want to pass that exe to an out file built by Cygwin(DOS version). It is going well upto half the way. After that it is showing the following error,which is related to Cygwin dll files(ACL check) . Program received signal SIGSEGV,…

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• QLineEdit: how to handle up and down arrows?

  - by Eye of Hell

  Hello. I have a console input in my Qt based application, it's a QLineEdit, all Ui is designed via QtDesigner. Is it any easy way way to handle up and down arrows in order to implement input history? The 'go to slot' only show returnProcessed signal, no way i can see to handle up…

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• Is it safe to draw three separate QImages in three separate QThreads?

  - by yan bellavance

  I have a QMainWindow with three widgets inside that are promoted to a class containing a subclassed QThread. They each draw on a local QImage in their rexpective qthread which is sent with a signal once its drawn and then rendered by calling update (mandlebrot example) from the…

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• Connecting slots and events in PyQt4 in a loop

  - by LukaD

  Im trying to build a calculator with PyQt4 and connecting the 'clicked()' signals from the buttons doesn't as expected. Im creating my buttons for the numbers inside a for loop where i try to connect them afterwards. def __init__(self): for i in range(0,10): …

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• The simplest concurrency pattern

  - by Ilya Kogan

  Please, would you help me in reminding me of one of the simplest parallel programming techniques. How do I do the following in C#: Initial state: semaphore counter = 0 Thread 1: // Block until semaphore is signalled semaphore.Wait(); // wait until semaphore counter is 1 …

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• Getting stack trace from a running Python application

  - by Sebastjan Trepca

  I have this Python application that gets stuck from time to time and I can't find out where. Is there any way to signal Python interpreter to show you the exact code that he's running (somekind of stacktrace on-the-fly)?

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• Do you use an exception class in your Perl programs? Why or why not?

  - by daotoad

  I've got a bunch of questions about how people use exceptions in Perl. I've included some background notes on exceptions, skip this if you want, but please take a moment to read the questions and respond to them. Thanks. Background on Perl Exceptions Perl has a very basic…

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• Pyqt - QMenu dynamically populated and clicked

  - by mleep

  I need to be able to know what item I've clicked in a dynamically generated menu system. I only want to know what I've clicked on, even if it's simply a string representation. def populateShotInfoMenus(self): self.menuFilms = QMenu() films = self.getList() for…

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