interrupt

问题 This question already has answers here : What kind of behaviour causes an interrupted exception? (7 answers) Closed 6 years ago . In Java multi threaded applications, we deal with InterruptedThreadException. This Exception is thrown if another thread interrupts the current thread. Now what is the reason another thread might want to interrupt the current thread when it knows that it is going to cause an Exception? 回答1: Many reasons. But the most popular one is to cancel some task on a thread.

问题 how to enable external interrupt of 8051? 回答1: Each of the 8051s interrupts has its own bit in the interrupt enable ( IE ) special function register (SFR) and is enabled by setting the corresponding bit. The code examples below are in 8051 assembly as well as C to provide a general idea of what is taking place. To enable external interrupt 0 ( EX0 ) you need to set bit 0 of IE . SETB EX0 or ORL IE,#01 or MOV IE,#01 To enable external interrupt 1 ( EX1 ) you need to set bit 3 of IE . SETB EX1

问题 If using following "idiom" with interruption in Java, for example from this answer. while (!Thread.currentThread().isInterrupted()) { try { Object value = queue.take(); handle(value); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } Where take is a blocking operation, can an interrupt not be ignored for the time being if an interrupt "arrives" between the check of Thread.currentThread().isInterrupted() and the call queue.take() ? Is this not a "check-than-act"

问题 From the docs: The Interrupt Status Flag The interrupt mechanism is implemented using an internal flag known as the interrupt status. Invoking Thread.interrupt sets this flag. When a thread checks for an interrupt by invoking the static method Thread.interrupted, interrupt status is cleared. The non-static isInterrupted method, which is used by one thread to query the interrupt status of another, does not change the interrupt status flag. By convention, any method that exits by throwing an

问题 I have an application the leans heavily on map functionality. From the first Activity I call the runOnFirstFix() method to load a lot of data from a database once the location of the user has been found, but I also want to be able to interrupt this runnable and stop it mid execution for when I switch activity or the user presses the button to stop it running. myLocationOverlay.runOnFirstFix(new Runnable() { public void run() { mc.animateTo(myLocationOverlay.getMyLocation()); mc.setZoom(15);

问题 I am an beginner in x86 assembly. I have compiled a small operating system (compiled with nasm onto a floppy disk), and I am having some trouble with it. This operating sysem is designed to turn on Caps, Scroll, and Num Lock, then wait for half of a second, then turn them off, then wait half a second. Then it repeats. The problem is at the lines cli and sti . This should be enabled to ensure atomicity, so the timing is correct for Wait_Clk_Ticks . When these lines are put into the program,

问题 I am working on a project which combines high-performance algorithms written in C++ with a Python interface. C++ classes and functions are wrapped and exposed to Python via the Cython compiler. Suppose I call a long running native function from the Python interpreter (my preferred one is IPython). Is it somehow possible to interrupt or abort the execution of that code without killing the interpreter? 回答1: Here is a possible implementation using multiprocessing as suggested by Ricardo C.,

问题 I need to call some DOS interrupts (Services) from a C/C++ program, I tried the following inline asm code: (Read a character) int main() { asm( "movb $0x01, %ah;" "int $0x21" ); system("PAUSE"); } But it did not work ! I would like to know what have i done wrong here ! Also if there is another way to call dos interrupts ! Thank You ! 回答1: You can only use DOS interrupts from DOS programs, so to make this work, you'd need a really ancient C++ compiler like Visual C++ 1.0 or 1.5, or Turbo C++

问题 Is there any other way to disable interrupts for the duration of only one instruction in x86 than using the CLI instruction? 回答1: Yes, loading SS with a MOV will inhibit external interrupts for the next instruction. This is what the instruction set reference says: Loading the SS register with a MOV instruction inhibits all interrupts until after the execution of the next instruction. This operation allows a stack pointer to be loaded into the ESP register with the next instruction (MOV ESP,

问题 In my Android application user can fill database with imported data, then perform predefined, complex SQL query. With some data pattern, query will take very long (minutes and more on HTC Hero), while common usage will not exceed 10-15 seconds. Is there any way to cancel pending SQLite query on Android? Timeout would be as good as well, partial results are not required. I'm performing query within AsyncTask.doInBackground() I know best way is optimize query or change app logic, but in this