interrupt

问题 I would like to write a batch script, and part of the script I want to check if program1.exe is still running. Once program1.exe is no longer running, I want to do something. I can write a while loop to do this, but it will keep checking over and over and use up 100% of one of my cores in my CPU. Is there an efficient way to check? Maybe a hack that checks this condition once a second? Thanks 回答1: Try like this : @echo off Set "MyProcess=Notepad.exe" :start tasklist | find /i "%MyProcess%"

问题 My programme listens for just one connection once... the programme just gets stuck at clientSocket = serverSocket.accept() if no client connects. I mean I can't even interrupt it by closing my window. I can't click any of my buttons in the frame etc. I've used this code the same way in my other programmes but it's worked fine (I can click text fields and buttons and stuff and type values in them, for this one, it just freezes there until a client connects, can't even exit). public void

问题 I'm working on an interrupt handler with a hardware design group and we're trying to figure out where a bug is. I'm reading a chip over the SPI bus at 5khz. The chip loads 4 bytes and triggers a data ready pin. My interrupt handler wakes up and read 4 bytes off the SPI bus and stores the data in a buffer. Strangely enough though, every 17th read gives 4 bytes of all 0's, which is not right. One of the options we're exploring is that the chip isn't always actually ready when it sends the data

问题 on Linux ext3 filesystem, what happens if mv() is called on the same file (file descriptor) while reading the file? It is actually an exam question and I can only say something like: CPU traps OS for interrupt handling etc, etc. I would appreciate if OS guys out there can help me out, please :D 回答1: Linux rename man page: That explains most of the details of this. If one or more processes have the file open when the last link is removed, the link shall be removed before rename() returns, but

问题 I'm using libopenCM3 for my project on STM32F4. I've used previously Standard Peripheral Library and newer Hardware Abstraction Layer developed by ST. In these libraries you have assembly file (startup file) with the definition of vector table. This is what I'm missing for libopenCM3. Can you please show me where to find this table? Or is it done some another way? I really need to use interrupts in my project. Thanks. 回答1: Can you please show me where to find this table? Interrupt vector

问题 Sniffed URB_INTERRUPTions I sniffed communication between some application (SoundLab) and device (sonometer with usb). I found a packet responsible for returning current state: USB URB [Source: host] [Destination: 1.1.2] USBPcap pseudoheader length: 27 IRP ID: 0xffff858d126f4a60 IRP USBD_STATUS: USBD_STATUS_SUCCESS (0x00000000) URB Function: URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER (0x0009) IRP information: 0x00, Direction: FDO -> PDO 0000 000. = Reserved: 0x00 .... ...0 = Direction: FDO ->

问题 I'm currently working on a PWM modulator to "simulate" a car engine ignition commutation. Then, I will use it to drive another microcontroller which handles the conversion from a raw signal (engine's commutator) to a clean output voltage, going through the RPM-counter's galvanometer. This project is also a pretext for me to learn how to have a better control upon my microcontroller. Well, I wrote a small program, using timer0 (8 bits), and I need to trigger two interrupt service routines

问题 I have a Callable that makes a http request via Apache library. However, if the request takes too long, I would like to kill the thread. To do this, I can interrupt the Callable, but I need to catch the InterruptedException in order to stop myself. How can I do this? private final class HelloWorker implements Callable<String> { private String url; public HelloWorker(String url) { this.url = url; } public CloseableHttpResponse call() throws Exception { CloseableHttpClient httpClient =

问题 In some code I'm working on, there are a couple of places where I do something like this: public MyThread extends Thread{ boolean finished = false; BlockingQueue<Foo> blockingQueue new LinkedBlockingQueue<Foo>(); public void run(){ while(!finished || (finished && !blockingQueue.isEmpty())){ try{ Foo f = blockingQueue.take(); insertIntoDatabase(f); } catch(InterruptedException e){ } } } public void insertThis(Foo f) throws InterruptedException{ blockingQueue.put(f); } public void stop(){

问题 I'm learning about interrupts and keyboard hardware interrupts such as interrupt 9 ( in dos ). and I noticed that if I press on an arrow key ( left, right, up, down ) then there will be two consecutive interrupts. the first one is the 'Shift' button interrupt and the second is the arrow key that I have pressed. I noticed that, since I rewrote and configured the keyboard's number 9 interrupt to prompt the scan code of the pressed button. for example, when I will press on the right arrow key, I