sigint

问题 I am currently working on a wrapper for a dedicated server running in the shell. The wrapper spawns the server process via subprocess and observes and reacts to its output. The dedicated server must be explicitly given a command to shut down gracefully. Thus, CTRL-C must not reach the server process. If I capture the KeyboardInterrupt exception or overwrite the SIGINT-handler in python, the server process still receives the CTRL-C and stops immediately. So my question is: How to prevent

问题 I'm reading How do we capture CTRL ^ C - Perl Monks, but I cannot seem to get the right info to help with my problem. The thing is - I have an infinite loop, and 'multiline' printout to terminal ( I'm aware I'll be told to use ncurses instead - but for short scripts, I'm more comfortable writing a bunch of printf s ). I'd like to trap Ctrl-C in such a way, that the script will terminate only after this multiline printout has finished. The script is (Ubuntu Linux 11.04): #!/usr/bin/env perl

问题 Okay, I am writing a program that is doing some pretty heavy analysis and I would like to be able to stop it quickly. I added signal(SIGINT, terminate); to the beginning of main and defined terminate like: void terminate(int param){ cout << endl << endl << "Exit [N]ow, or [A]fter this url?" << endl; std::string answer; cin >> answer; if(answer[0] == 'n' || answer[0] == 'N'){ terminateParser(); exit(1); }else if(answer[0] == 'a' || answer[0] == 'A'){ quitAfterUrl = true; } } In linux, this

问题 MI have a program that starts with for loop and it spins for 10 times, and one loop lasts one second. I need to handle a signal (CTRL+C) and while handling it, it should do it's own for loop, and after it stops, then I should return to the main loop. I've managed to do almost everything above, but the loops don't execute separately. They do it parallel. Hope you can help... thanks :) BTW, my code is: import sun.misc.Signal; import sun.misc.SignalHandler; public class MySig { public static

问题 I'm building a Ruby app that runs both an EM::WebSocket server as well as a Sinatra server. Individually, I believe both of these are equipped to handle a SIGINT. However, when running both in the same app, the app continues when I press Ctrl+C. My assumption is that one of them is capturing the SIGINT, preventing the other from capturing it as well. I'm not sure how to go about fixing it, though. Here's the code in a nutshell: require 'thin' require 'sinatra/base' require 'em-websocket'

问题 I need to execute clean up functions in SIGINT handler, but I can't pass local data to it. Here an example: int main(int argc, char *argv[]) { struct database *db = db_cursor(); sockfd_t master_socket = init_server(); signal(SIGINT, sigint_handler); while (1) { // accepting connections } } void sigint_handler(int s) { destroy_db(db); shutdown(master_socket, SHUT_RDWR); close(master_socket); exit(EXIT_SUCCESS); } How can I implement such behaviour? I've tried make this variables are global,

问题 I am writing a bash script in which I wrote a handler to take care of when the user pressed Control+C, (by using trap interruptHandler SIGINT ) but the SIGINT gets sent to both the bash script and the child process that is currently running, closing the child process. How can I prevent this from happening? edit: here's the script, don't critique my skills too much.. #!/bin/bash trap "interruptHandler" SIGINT inInterrupt=false; quit=false; if [ -z ${cachedir+x} ]; then cachedir=~/.cache

问题 I have a main python(testmain.py) script that executes another python script(test.py) using subprocess.Popen command. When I press Ctrl-C , I want the child to exit with exit code 2 and then the parent to display that exit code and then terminate . I have signal handlers in both parent and child scripts. testmain.py def signal_handler(signal, frame): print "outer signal handler" exit(2) signal.signal(signal.SIGINT, signal_handler) def execute() proc=subprocess.Popen("python test.py",shell

问题 After so many years cruising on Linux, I am back on a freaking Windows environment. I use Ipython, and I launch it in git bash. It would be hard for me to use something else, since the environment is configured to use this at my office. So, when I launch Ipython, and I mistakenly launch an infinite loop, or some bad code that takes ages to execute, I use ctrl-c. This kills Ipython, and it's pretty annoying. I did not find any way to circumvene this or another key that would do the trick. Any

问题 Is there anyway to capture a SIGINT or SIGTERM from the shell in R so that I can try to execute some graceful exit code? So far, I haven't found anything in my search. 来源： https://stackoverflow.com/questions/30823237/can-r-interpret-a-sigint-sigterm-and-execute-a-process-as-a-result