38 lines
1.0 KiB
JavaScript
38 lines
1.0 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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function AllocMemory(pages, max = pages) {
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let m =
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new WebAssembly.Memory({initial : pages, maximum : max, shared : true});
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let v = new Int32Array(m.buffer);
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return {memory : m, view : v};
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}
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function RunSomeAllocs(total, retained, pages, max = pages) {
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print(`-------iterations = ${total}, retained = $ { retained } -------`);
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var array = new Array(retained);
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for (var i = 0; i < total; i++) {
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if ((i % 25) == 0)
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print(`iteration $ { i }`);
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let pair = AllocMemory(pages, max);
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// For some iterations, retain the memory, view, or both.
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switch (i % 3) {
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case 0:
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pair.memory = null;
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break;
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case 1:
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pair.view = null;
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break;
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case 2:
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break;
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}
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array[i % retained] = pair;
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}
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}
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RunSomeAllocs(10, 1, 1, 1);
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RunSomeAllocs(100, 3, 1, 1);
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RunSomeAllocs(1000, 10, 1, 1);
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RunSomeAllocs(10000, 20, 1, 1);
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