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nodejs/test/parallel/test-performance-gc.js
Anna Henningsen dd52cad044 doc,lib,src,test: strip executable bits off files
Remove the executable bits of the file modes of some files that
accidentally received it.

PR-URL: https://github.com/nodejs/node/pull/15132
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
2017-09-01 10:09:41 -07:00

52 lines
1.3 KiB
JavaScript

// Flags: --expose-gc
'use strict';
const common = require('../common');
const assert = require('assert');
const {
performance,
PerformanceObserver
} = require('perf_hooks');
const {
NODE_PERFORMANCE_GC_MAJOR,
NODE_PERFORMANCE_GC_MINOR,
NODE_PERFORMANCE_GC_INCREMENTAL,
NODE_PERFORMANCE_GC_WEAKCB
} = process.binding('performance').constants;
const kinds = [
NODE_PERFORMANCE_GC_MAJOR,
NODE_PERFORMANCE_GC_MINOR,
NODE_PERFORMANCE_GC_INCREMENTAL,
NODE_PERFORMANCE_GC_WEAKCB
];
// No observers for GC events, no entries should appear
{
global.gc();
const entries = performance.getEntriesByType('gc');
assert.strictEqual(entries.length, 0);
}
// Adding an observer should force at least one gc to appear
{
const obs = new PerformanceObserver(common.mustCallAtLeast((list) => {
const entry = list.getEntries()[0];
assert(entry);
assert.strictEqual(entry.name, 'gc');
assert.strictEqual(entry.entryType, 'gc');
assert(kinds.includes(entry.kind));
assert.strictEqual(typeof entry.startTime, 'number');
assert.strictEqual(typeof entry.duration, 'number');
performance.clearGC();
const entries = performance.getEntriesByType('gc');
assert.strictEqual(entries.length, 0);
obs.disconnect();
}));
obs.observe({ entryTypes: ['gc'] });
global.gc();
}