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e738edce6a
Subsystems: blob, child_process, common, crypto, http, http2, readline, repl, snapshot, trace_events PR-URL: https://github.com/nodejs/node/pull/49127 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Debadree Chatterjee <debadree333@gmail.com>
56 lines
1.6 KiB
JavaScript
56 lines
1.6 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const cp = require('child_process');
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const fs = require('fs');
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const CODE =
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'setTimeout(() => { for (let i = 0; i < 100000; i++) { "test" + i } }, 1)';
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const tmpdir = require('../common/tmpdir');
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tmpdir.refresh();
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const FILE_NAME = tmpdir.resolve('node_trace.1.log');
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const proc = cp.spawn(process.execPath,
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[ '--trace-events-enabled', '-e', CODE ],
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{ cwd: tmpdir.path });
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proc.once('exit', common.mustCall(() => {
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assert(fs.existsSync(FILE_NAME));
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fs.readFile(FILE_NAME, common.mustCall((err, data) => {
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const traces = JSON.parse(data.toString()).traceEvents;
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assert(traces.length > 0);
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// V8 trace events should be generated.
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assert(traces.some((trace) => {
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if (trace.pid !== proc.pid)
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return false;
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if (trace.cat !== 'v8')
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return false;
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if (!trace.name.startsWith('V8.'))
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return false;
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return true;
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}));
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// C++ async_hooks trace events should be generated.
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assert(traces.some((trace) => {
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if (trace.pid !== proc.pid)
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return false;
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if (trace.cat !== 'node,node.async_hooks')
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return false;
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return true;
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}));
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// JavaScript async_hooks trace events should be generated.
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assert(traces.some((trace) => {
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if (trace.pid !== proc.pid)
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return false;
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if (trace.cat !== 'node,node.async_hooks')
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return false;
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if (trace.name !== 'Timeout')
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return false;
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return true;
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}));
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}));
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}));
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