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c++ Programming Glossary: signalWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array admit it's not the best analogy since the train could just signal the direction with a flag. But in computers the processor doesn't..
Good C++ GUI library for Windows http://stackoverflow.com/questions/115045/good-c-gui-library-for-windows an additional cpp file containing the marshaling for signal slot callbacks which can get rather messy when they cross thread..
Why should exceptions be used conservatively? http://stackoverflow.com/questions/1744070/why-should-exceptions-be-used-conservatively or other system API invocations to manage kernel system signal interfaces stack unwinding allocation of dynamic objects calling..
What are the rules about using an underscore in a C++ identifier? http://stackoverflow.com/questions/228783/what-are-the-rules-about-using-an-underscore-in-a-c-identifier by an uppercase letter are reserved for additional signal names. Names that begin with 'SIG_' followed by an uppercase.. by an uppercase letter are reserved for additional signal actions. Names beginning with 'str' 'mem' or 'wcs' followed..
Why is volatile not considered useful in multithreaded C or C++ programming? http://stackoverflow.com/questions/2484980/why-is-volatile-not-considered-useful-in-multithreaded-c-or-c-programming situation in the same way it sees a variable tweaked by a signal handler or modified by an external hardware condition and thus..
What are all the common undefined behaviour that a C++ programmer should know about? [closed] http://stackoverflow.com/questions/367633/what-are-all-the-common-undefined-behaviour-that-a-c-programmer-should-know-ab other than volatile or sig_atomic_t at the receipt of a signal Attempting to modify a string literal or any other const object..
When to use volatile with multi threading? http://stackoverflow.com/questions/4557979/when-to-use-volatile-with-multi-threading to be used when interfacing with memory mapped hardware signal handlers and the setjmp machine code instruction. This makes..
C++ : Catch a divide by zero error http://stackoverflow.com/questions/4747934/c-catch-a-divide-by-zero-error that in such case what happens is not an exception but a signal. If it's the case The operating system interrupts your program's.. interrupts your program's main control flow and calls a signal handler which in turn terminates the operation of your program... a null pointer then your program crashes by SIGSEGV signal segmentation fault . You could try to use the functions from..
How to generate a stacktrace when my gcc C++ app crashes http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes the handler #include stdio.h #include execinfo.h #include signal.h #include stdlib.h void handler int sig void array 10 size_t.. 10 print out all the frames to stderr fprintf stderr Error signal d n sig backtrace_symbols_fd array size STDERR_FILENO exit 1.. void bar baz void foo bar int main int argc char argv signal SIGSEGV handler install our handler foo this will call foo bar..
What is the closest thing windows has to fork()? http://stackoverflow.com/questions/985281/what-is-the-closest-thing-windows-has-to-fork is waiting on and blocks on another mutex. This is the signal for the parent to copy its stack and heap into the child after..
How can i get content of web-page http://stackoverflow.com/questions/1053099/how-can-i-get-content-of-web-page m_manager new QNetworkAccessManager this connect m_manager SIGNAL finished QNetworkReply this SLOT replyFinished QNetworkReply..
QObject: Cannot create children for a parent that is in a different thread http://stackoverflow.com/questions/3268073/qobject-cannot-create-children-for-a-parent-that-is-in-a-different-thread ResultThread _net_acc_mgr this connect _net_acc_mgr SIGNAL finished QNetworkReply this SLOT onReplyFinished QNetworkReply..
How do I create a simple Qt console application in C++? http://stackoverflow.com/questions/4180394/how-do-i-create-a-simple-qt-console-application-in-c exit when the task signals finished. QObject connect task SIGNAL finished a SLOT quit This will run the task from the application..
Can Qt signals return a value? http://stackoverflow.com/questions/5842124/can-qt-signals-return-a-value QObject parent public Q_SLOTS void voidSlot int intSlot Q_SIGNALS void voidSignal int intSignal Not only doesn't moc complain.. it in such a way as to allow a return value to pass SIGNAL 1 int Object intSignal int _t0 void _a const_cast void reinterpret_cast.. class TestClass public QObject Q_OBJECT public TestClass Q_SIGNALS QString testSignal public Q_SLOTS QString testSlot1 return..
How to emit cross-thread signal in Qt? http://stackoverflow.com/questions/638251/how-to-emit-cross-thread-signal-in-qt oThread1 CThread2 oThread2 QObject connect oThread1 SIGNAL MySignal oThread2 SLOT MySlot oThread1.start oThread2.start.. oThread2 MyObject myObject QObject connect oThread1 SIGNAL MySignal myObject SLOT MySlot oThread2.start myObject.moveToThread..
http://stackoverflow.com/questions/8834147/c-signal-to-qml-slot-in-qt SIGNAL to QML SLOT in Qt I want to send a Signal from C to a Slot.. QObject QString contentView QObject connect myObj SIGNAL finishedGatheringDataForItem QString contentView SLOT updateViewWithItem..
Is it possible to connect a signal to a static slot without a receiver instance? http://stackoverflow.com/questions/9428038/is-it-possible-to-connect-a-signal-to-a-static-slot-without-a-receiver-instance slot without a receiver instance Like this connect object SIGNAL some STATIC_SLOT staticFooMember There is a QApplication closeAllWindows.. setStatusTip tr Exit the application connect exitAct SIGNAL triggered qApp SLOT closeAllWindows Is it allowed to do same.. it you need an instance. In their example connect exitAct SIGNAL triggered qApp SLOT closeAllWindows means than they previously..
QThread ASSERT failure in QMutexLocker: “QMutex pointer is misaligned”, http://stackoverflow.com/questions/9458664/qthread-assert-failure-in-qmutexlocker-qmutex-pointer-is-misaligned moveToThread fileUploaderThread connect fileUploader SIGNAL progressChangedAt int model_ SLOT reportProgressChanged int.. model_ SLOT reportProgressChanged int connect fileUploader SIGNAL statusChangedAt int model_ SLOT reportStatusChanged int fileUploaderThread.. new RestFileUploader connect restFileUploader SIGNAL uploadProgress qint64 this SLOT setUploadProgress qint64 connect..
Getting segmentation fault SIGSEGV in memcpy after mmap http://stackoverflow.com/questions/13270689/getting-segmentation-fault-sigsegv-in-memcpy-after-mmap gdb 15737 info signal SIGSEGV info signal SIGSEGV n ~ Signal Stop tPrint tPass to program tDescription n ~ SIGSEGV Yes tYes..
Qt Application segmentation fault with MinGW 4.7.2 http://stackoverflow.com/questions/13962857/qt-application-segmentation-fault-with-mingw-4-7-2 app argc argv Crash here return app.exec Crash Signal received SIGSEGV Segmentation fault Call Stack ZN23QCoreApplicationPrivate27processCommandLineArgumentsEv..
Expose a non-const but noncopyable member in Boost Python http://stackoverflow.com/questions/15093504/expose-a-non-const-but-noncopyable-member-in-boost-python Here's my problem I have two classes like these class Signal public void connect ... sig.connect ... private boost signal2.. ... private boost signal2 signal sig class MyClass public Signal on_event I would like to expose MyClass on_event so that I can.. from Python. This is how I've wrapped those classes class_ Signal boost noncopyable Signal noinit .def connect some_helper_function..
Is this a correct way to implement a bounded buffer in C++ [closed] http://stackoverflow.com/questions/15798222/is-this-a-correct-way-to-implement-a-bounded-buffer-in-c nextin nextin 1 capacity wrap around count 1 notempty.V Signal that retrieval is safe Item BoundedBuffer Retrieve if count.. or a different erase methodology count 1 notfull.V Signal that deposit is safe return x I think that issues could arise..
http://stackoverflow.com/questions/17942034/simple-linux-signal-handling Linux Signal Handling I have a program that creates many threads and runs.. and put it into register. read Atomic Data Access and Signal Handling for detail expiation . One more reference 24.4.7 Atomic.. . One more reference 24.4.7 Atomic Data Access and Signal Handling Q 4 I've read that signal is now deprecated and to..
QApplication: How to shutdown gracefully on Ctrl-C http://stackoverflow.com/questions/2300401/qapplication-how-to-shutdown-gracefully-on-ctrl-c line options if no_gui QObject connect app SIGNAL unixSignal int app SLOT quit app.watchUnixSignal SIGINT true app.watchUnixSignal.. app SIGNAL unixSignal int app SLOT quit app.watchUnixSignal SIGINT true app.watchUnixSignal SIGTERM true ... return app.exec.. app SLOT quit app.watchUnixSignal SIGINT true app.watchUnixSignal SIGTERM true ... return app.exec However this does not work...
Why is volatile not considered useful in multithreaded C or C++ programming? http://stackoverflow.com/questions/2484980/why-is-volatile-not-considered-useful-in-multithreaded-c-or-c-programming it that variable should be declared to be volatile . Signal handlers I O registers and variables modified by another thread..
Which C++ signals/slots library should I choose? http://stackoverflow.com/questions/359928/which-c-signals-slots-library-should-i-choose Connect two functions with any number of parameters. Signals can be connected to multiple slots. Manual disconnection of.. frame. I've read a comparison between libsigc and Boost.Signals . I've also read that Boost.Signals suffers from poor performance... libsigc and Boost.Signals . I've also read that Boost.Signals suffers from poor performance. However I know there are other..
What does `class HelloWorld : public Gtk::Window` mean? http://stackoverflow.com/questions/4478481/what-does-class-helloworld-public-gtkwindow-mean Gtk Window public HelloWorld virtual ~HelloWorld protected Signal handlers void on_button_clicked Member widgets Gtk Button m_button..
C++ : Catch a divide by zero error http://stackoverflow.com/questions/4747934/c-catch-a-divide-by-zero-error iostream using namespace std void handler int a cout Signal a here endl int main signal SIGFPE handler int a 1 0 Output.. here endl int main signal SIGFPE handler int a 1 0 Output Signal 8 here And right after executing the signal handler the system..
http://stackoverflow.com/questions/4863420/signal-handling other functions you are probably doing something wrong. Signals are not a substitute for an event driven framework. Calling..
http://stackoverflow.com/questions/5799924/thread-wait-for-parent workQueue.end loop delete loop Add a new job to the queue Signal the condition variable. This will flush a waiting worker otherwise..
http://stackoverflow.com/questions/7623401/override-ctrl-c Ctrl D to end char c while std cin c if sigflag 0 std cerr Signal n sigflag 0 This will catch Ctrl C which raises SIGINT and..
http://stackoverflow.com/questions/8834147/c-signal-to-qml-slot-in-qt SIGNAL to QML SLOT in Qt I want to send a Signal from C to a Slot in my QML File. I already got it working without.. way to exchange data between QML and C and does not need Signals or Slots in first instance because the QStandardItemModel updates..
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