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9b6b567bc4
This flag allows heap snapshots to be captured without modifying application code. PR-URL: https://github.com/nodejs/node/pull/27133 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Sam Roberts <vieuxtech@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
42 lines
1.2 KiB
JavaScript
42 lines
1.2 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('test not supported on Windows');
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const assert = require('assert');
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if (process.argv[2] === 'child') {
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const fs = require('fs');
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assert.strictEqual(process.listenerCount('SIGUSR2'), 1);
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process.kill(process.pid, 'SIGUSR2');
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process.kill(process.pid, 'SIGUSR2');
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// Asynchronously wait for the snapshot. Use an async loop to be a bit more
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// robust in case platform or machine differences throw off the timing.
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(function validate() {
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const files = fs.readdirSync(process.cwd());
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if (files.length === 0)
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return setImmediate(validate);
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assert.strictEqual(files.length, 2);
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for (let i = 0; i < files.length; i++) {
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assert(/^Heap\..+\.heapsnapshot$/.test(files[i]));
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JSON.parse(fs.readFileSync(files[i]));
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}
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})();
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} else {
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const { spawnSync } = require('child_process');
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const tmpdir = require('../common/tmpdir');
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tmpdir.refresh();
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const args = ['--heapsnapshot-signal', 'SIGUSR2', __filename, 'child'];
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const child = spawnSync(process.execPath, args, { cwd: tmpdir.path });
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assert.strictEqual(child.status, 0);
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assert.strictEqual(child.signal, null);
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}
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