60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
'use strict';
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const common = require('../common');
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common.skipIfInspectorDisabled();
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common.skipIfWorker(); // https://github.com/nodejs/node/issues/22767
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const assert = require('assert');
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const { performance } = require('perf_hooks');
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const { Session } = require('inspector');
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const session = new Session();
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function post(message, data) {
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return new Promise((resolve, reject) => {
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session.post(message, data, (err, result) => {
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if (err)
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reject(new Error(JSON.stringify(err)));
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else
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resolve(result);
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});
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});
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}
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async function test() {
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session.connect();
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const events = [];
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let tracingComplete = false;
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session.on('NodeTracing.dataCollected', (n) => {
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assert.ok(n && n.params && n.params.value);
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events.push(...n.params.value); // append the events.
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});
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session.on('NodeTracing.tracingComplete', () => tracingComplete = true);
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// Generate a node.perf event before tracing is enabled.
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performance.mark('mark1');
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const traceConfig = { includedCategories: ['node.perf'] };
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await post('NodeTracing.start', { traceConfig });
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// Generate a node.perf event after tracing is enabled. This should be the
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// mark event captured.
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performance.mark('mark2');
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await post('NodeTracing.stop', { traceConfig });
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performance.mark('mark3');
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session.disconnect();
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assert.ok(tracingComplete);
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const marks = events.filter((t) => null !== /node\.perf\.usertim/.exec(t.cat));
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assert.strictEqual(marks.length, 1);
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assert.strictEqual(marks[0].name, 'mark2');
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}
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test();
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