nodejs/test/parallel/test-signal-handler.js

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'use strict';
const common = require('../common');
const assert = require('assert');
if (common.isWindows) {
console.log('1..0 # Skipped: SIGUSR1 and SIGHUP signals are not supported');
return;
}
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console.log('process.pid: ' + process.pid);
let first = 0;
let second = 0;
var sighup = false;
process.on('SIGUSR1', function() {
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console.log('Interrupted by SIGUSR1');
first += 1;
});
process.on('SIGUSR1', function() {
second += 1;
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setTimeout(function() {
console.log('End.');
process.exit(0);
}, 5);
});
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var i = 0;
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setInterval(function() {
console.log('running process...' + ++i);
if (i == 5) {
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process.kill(process.pid, 'SIGUSR1');
}
}, 1);
// Test on condition where a watcher for SIGNAL
// has been previously registered, and `process.listeners(SIGNAL).length === 1`
process.on('SIGHUP', function() {});
process.removeAllListeners('SIGHUP');
process.on('SIGHUP', function() { sighup = true; });
process.kill(process.pid, 'SIGHUP');
process.on('exit', function() {
assert.equal(1, first);
assert.equal(1, second);
assert.equal(true, sighup);
});