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'use strict';
const common = require('../common');
if (common.isWindows)
common.skip('no signals on Windows');
if (!common.isMainThread)
common.skip('No signal handling available in Workers');
const initHooks = require('./init-hooks');
const verifyGraph = require('./verify-graph');
const { exec } = require('child_process');
const hooks = initHooks();
hooks.enable();
const interval = setInterval(() => {}, 9999); // keep event loop open
process.on('SIGUSR2', common.mustCall(onsigusr2, 2));
let count = 0;
exec(`kill -USR2 ${process.pid}`);
function onsigusr2() {
count++;
if (count === 1) {
// Trigger same signal handler again
exec(`kill -USR2 ${process.pid}`);
} else {
// Install another signal handler
process.removeAllListeners('SIGUSR2');
process.on('SIGUSR2', common.mustCall(onsigusr2Again));
exec(`kill -USR2 ${process.pid}`);
}
}
function onsigusr2Again() {
clearInterval(interval); // let the event loop close
}
process.on('exit', onexit);
function onexit() {
hooks.disable();
verifyGraph(
hooks,
[ { type: 'SIGNALWRAP', id: 'signal:1', triggerAsyncId: null },
{ type: 'PROCESSWRAP', id: 'process:1', triggerAsyncId: null },
{ type: 'PIPEWRAP', id: 'pipe:1', triggerAsyncId: null },
{ type: 'PIPEWRAP', id: 'pipe:2', triggerAsyncId: null },
{ type: 'PIPEWRAP', id: 'pipe:3', triggerAsyncId: null },
{ type: 'PROCESSWRAP', id: 'process:2', triggerAsyncId: 'signal:1' },
{ type: 'PIPEWRAP', id: 'pipe:4', triggerAsyncId: 'signal:1' },
{ type: 'PIPEWRAP', id: 'pipe:5', triggerAsyncId: 'signal:1' },
{ type: 'PIPEWRAP', id: 'pipe:6', triggerAsyncId: 'signal:1' },
{ type: 'SIGNALWRAP', id: 'signal:2', triggerAsyncId: 'signal:1' },
{ type: 'PROCESSWRAP', id: 'process:3', triggerAsyncId: 'signal:1' },
{ type: 'PIPEWRAP', id: 'pipe:7', triggerAsyncId: 'signal:1' },
{ type: 'PIPEWRAP', id: 'pipe:8', triggerAsyncId: 'signal:1' },
{ type: 'PIPEWRAP', id: 'pipe:9', triggerAsyncId: 'signal:1' } ]
);
}
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