如何捕获当前在Dart的SIGINT？ [英] How to catch SIGINT for the current in Dart?

问题描述

如何在当前进程的Dart程序中捕获 Ctrl + C 或SIGINT？

Node类似的东西：

  process.on（'SIGINT'，function 
 // do stuff 
}）; 
  
 
 
解决方案
 https://codereview.chromium.org/119093007/patch/120001/130013 =nofollow>统一差异：tests / standalone / io / signals_test_script.dart  
  importdart：io; 
 
 void main（args）{
 int usr1Count = int.parse（args [0]）; 
 int usr2Count = int.parse（args [1]）; 
 var sub1; 
 var sub2; 
 void check（）{
 if（usr1Count< 0 || usr2Count< 0）exit（1）; 
 if（usr1Count == 0&& usr2Count == 0）{
 sub1.cancel（）; 
 sub2.cancel（）; 
} 
 print（ready）; 
} 
 sub1 = ProcessSignal.SIGUSR1.watch（）。listen（（signal）{
 if（signal！= ProcessSignal.SIGUSR1）exit（1）; 
 usr1Count-- ; 
 check（）; 
}）; 
 sub2 = ProcessSignal.SIGUSR2.watch（）。listen（（signal）{
 if（signal！= ProcessSignal.SIGUSR2）exit（1）; 
 usr2Count--; 
 check（）; 
}）; 
 check（）; 
} 
  
 
How can Ctrl+C or SIGINT be caught in a Dart program for the current process?

Something similar to this for Node:
process.on('SIGINT', function() {
    // do stuff
});

解决方案
I found the following test code at Unified Diff: tests/standalone/io/signals_test_script.dart
import "dart:io";

void main(args) {
  int usr1Count = int.parse(args[0]);
  int usr2Count = int.parse(args[1]);
  var sub1;
  var sub2;
  void check() {
    if (usr1Count < 0 || usr2Count < 0) exit(1);
    if (usr1Count == 0 && usr2Count == 0) {
      sub1.cancel();
      sub2.cancel();
    }
    print("ready");
  }
  sub1 = ProcessSignal.SIGUSR1.watch().listen((signal) {
    if (signal != ProcessSignal.SIGUSR1) exit(1);
    usr1Count--;
    check();
  });
  sub2 = ProcessSignal.SIGUSR2.watch().listen((signal) {
    if (signal != ProcessSignal.SIGUSR2) exit(1);
    usr2Count--;
    check();
  });
  check();
}


                        
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