43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
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// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --expose-gc
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load('test/mjsunit/mjsunit.js');
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function assertLessThanOrEqual(a, b) {
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assertTrue(a <= b, `Expected ${a} <= ${b}`);
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}
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function createRealmAndAllocate(bytes) {
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let realm = Realm.createAllowCrossRealmAccess();
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Realm.eval(realm, `
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this.numbers = [.1];
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for (let i = 0; i < ${bytes} / 8; ++i) {
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this.numbers.push(0.1);
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}
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`);
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}
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if (this.performance && performance.measureMemory) {
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let number_of_realms = 3;
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let realms = [];
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let bytes_to_allocate = 1024 * 1024;
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for (let i = 0; i < number_of_realms; i++) {
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realms.push(createRealmAndAllocate(bytes_to_allocate));
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}
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assertPromiseResult((async () => {
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let result = await performance.measureMemory({detailed: true});
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print(JSON.stringify(result));
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assertEquals(number_of_realms, result.other.length);
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for (let other of result.other) {
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// TODO(ulan): compare against bytes_to_allocate once
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// we have more accurate native context inference.
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assertLessThanOrEqual(0, other.jsMemoryEstimate);
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}
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})());
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// Force a GC to complete memory measurement.
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gc();
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}
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