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8997026d18
Make sure event loop remains open long enough for signal to be received. PR-URL: https://github.com/nodejs/node/pull/17509 Fixes: https://github.com/nodejs/node/issues/14568 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Refael Ackermann <refack@gmail.com> Reviewed-By: Evan Lucas <evanlucas@me.com>
62 lines
1.9 KiB
JavaScript
62 lines
1.9 KiB
JavaScript
'use strict';
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const common = require('../common');
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if (common.isWindows) {
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common.skip('no signals on Windows');
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}
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const initHooks = require('./init-hooks');
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const verifyGraph = require('./verify-graph');
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const { exec } = require('child_process');
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const hooks = initHooks();
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hooks.enable();
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const interval = setInterval(() => {}, 9999); // keep event loop open
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process.on('SIGUSR2', common.mustCall(onsigusr2, 2));
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let count = 0;
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exec(`kill -USR2 ${process.pid}`);
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function onsigusr2() {
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count++;
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if (count === 1) {
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// trigger same signal handler again
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exec(`kill -USR2 ${process.pid}`);
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} else {
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// install another signal handler
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process.removeAllListeners('SIGUSR2');
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process.on('SIGUSR2', common.mustCall(onsigusr2Again));
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exec(`kill -USR2 ${process.pid}`);
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}
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}
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function onsigusr2Again() {
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clearInterval(interval); // let the event loop close
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}
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process.on('exit', onexit);
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function onexit() {
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hooks.disable();
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verifyGraph(
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hooks,
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[ { type: 'SIGNALWRAP', id: 'signal:1', triggerAsyncId: null },
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{ type: 'PROCESSWRAP', id: 'process:1', triggerAsyncId: null },
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{ type: 'PIPEWRAP', id: 'pipe:1', triggerAsyncId: null },
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{ type: 'PIPEWRAP', id: 'pipe:2', triggerAsyncId: null },
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{ type: 'PIPEWRAP', id: 'pipe:3', triggerAsyncId: null },
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{ type: 'PROCESSWRAP', id: 'process:2', triggerAsyncId: 'signal:1' },
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{ type: 'PIPEWRAP', id: 'pipe:4', triggerAsyncId: 'signal:1' },
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{ type: 'PIPEWRAP', id: 'pipe:5', triggerAsyncId: 'signal:1' },
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{ type: 'PIPEWRAP', id: 'pipe:6', triggerAsyncId: 'signal:1' },
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{ type: 'SIGNALWRAP', id: 'signal:2', triggerAsyncId: 'signal:1' },
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{ type: 'PROCESSWRAP', id: 'process:3', triggerAsyncId: 'signal:1' },
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{ type: 'PIPEWRAP', id: 'pipe:7', triggerAsyncId: 'signal:1' },
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{ type: 'PIPEWRAP', id: 'pipe:8', triggerAsyncId: 'signal:1' },
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{ type: 'PIPEWRAP', id: 'pipe:9', triggerAsyncId: 'signal:1' } ]
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);
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}
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