interrupt

问题 I have a threaded application written in Python, and whenever an interrupt is received via Ctrl + C or sometimes with kill, the application will hang. A stack trace is presented from one thread, but the application remains in the foreground, and I usually have to background it with Ctrl + Z then attempt to kill it. What is the proper way of handling signals and keyboard interrupts inside of a threaded application? 回答1: If you set newthread.daemon = True before starting each thread, the

问题 I am interested in evaluating the behavior (latency, frequency) of SMI handling on Linux machine running CentOS and used for a (very) soft real time application. What tools are recommended (hwlatdetect for CentOS?), and what is the best course of action to go about this? If no good tools are available for CentOS, am I correct to assume that installing a different OS on the same machine should yield the same results since the underlying hardware/bios are the same? Is there any source for

问题 I've created a OpenGL 3D game utilizing OpenAL for audio playback and experienceing a problem of losing audio if "Home" button is getting pressed before audio device is getting initialized. I tried to hook up to audio session interrupt handler, but my callback is never getting called. No matter if I minimize or maximize my application. My "OpenALInterruptionListener" is never getting called. What am I doing wrong? AudioSessionInitialize(NULL, NULL, OpenALInterriptionListener, this); void

问题 This question has already been answered for x86 however, I couldn't find much about ARM MP cpus like Cortex-A9, Cortex-A15 etc... More importantly i want to know if interrupts can be raised on non-primary cpu without any configuration etc. I am working on a software which deals only with the primary cpu hence i put the rest in WFI state however I am unaware of how interrupts work on the MP arm cpus, Is it possible that the main cpu continues executing code and one of the secondary cpu picks

问题 So, this resource (http://www.ibm.com/developerworks/java/library/j-jtp05236/index.html) suggest to set the interrupt bit in a Thread when that Thread does not deal with the interrupt itself, " so that code higher up on the call stack can learn of the interruption and respond to it if it wants to ." Let's say I'm using an ExecutorService to run something in a different Thread. I construct a Callable and pass this Callable into ExecutorService.submit(), which returns a Future. If the Callable

问题 I am asking this because I am trying to implement interrupts in my toy kernel. So, I know that when an interrupt occurs, the CPU pushes various bits of information onto the stack. However, everywhere I search online shows different information in different order being pushed. I also know that if the interrupt occurred in user mode (Ring 3), the CPU must switch to kernel mode (Ring 0) before it can execute the ISR. I think it has something to do with the TSS and ss and esp , however I am not

问题 Off late i am working on multithreading in java. Want to understand if a Thread is in BLOCKED state why it cant be interrupted? And why the thread can be interrupted only if it is in WAIT state? Basically, why do we need two Thread states one which can be interrupted and the other which cant be interrupted? This question might be very basic but, I am trying to understand things rather than just remembering them. 回答1: One assumes that you mean cause the thread to stop its current operation and

问题 I'm working on a simple kernel and I've been trying to implement a keyboard interrupt handler to get rid of port polling. I've been using QEMU in -kernel mode (to reduce compile time, because generating the iso using grub-mkrescue takes quite some time) and it worked just fine, but when I wanted to switch to -cdrom mode it suddenly started crashing. I had no idea why. Eventually I've realized that when it boots from an iso it also runs a GRUB bootloader before booting the kernel itself. I've

问题 Hi I am fairly new to python and I am trying to create a program that starts a thread that after five seconds will interrupt the input () function and print the message “Done!”. Currently it only prints “Done!” after input is given. Even after five seconds has passed, the user must enter input before the message "Done!" is displayed. How can I get the thread to interrupt the input() function? import time import threading def fiveSec(): time.sleep(5) print('Done!') def main(): t = threading

问题 I have the following situation: There is a thread that reads from a device with a fread call. This call is blocking as long as there is no data send from the device. When I stop this thread it remains hanging inside this thread. Now I found the following inside the man page of fread: ERRORS On all systems that conform to the Single UNIX Specification, the fread() function sets errno as listed for the following conditions: [EINTR] The read operation was terminated due to the receipt of a