mirror of
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7298a38552
sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
598 lines
20 KiB
JavaScript
598 lines
20 KiB
JavaScript
// Copyright 2014 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: --harmony-sharedarraybuffer
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//
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function toRangeWrapped(value) {
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var range = this.max - this.min + 1;
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while (value < this.min) {
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value += range;
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}
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while (value > this.max) {
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value -= range;
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}
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return value;
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}
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function makeConstructorObject(constr, min, max, toRange) {
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var o = {constr: constr, min: min, max: max};
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o.toRange = toRangeWrapped.bind(o);
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return o;
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}
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var IntegerTypedArrayConstructors = [
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makeConstructorObject(Int8Array, -128, 127),
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makeConstructorObject(Int16Array, -32768, 32767),
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makeConstructorObject(Int32Array, -0x80000000, 0x7fffffff),
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makeConstructorObject(Uint8Array, 0, 255),
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makeConstructorObject(Uint16Array, 0, 65535),
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makeConstructorObject(Uint32Array, 0, 0xffffffff),
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];
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(function TestBadArray() {
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var ab = new ArrayBuffer(16);
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var u32a = new Uint32Array(16);
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var sab = new SharedArrayBuffer(128);
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var sf32a = new Float32Array(sab);
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var sf64a = new Float64Array(sab);
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var u8ca = new Uint8ClampedArray(sab);
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// Atomic ops required integer shared typed arrays
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var badArrayTypes = [
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undefined, 1, 'hi', 3.4, ab, u32a, sab, sf32a, sf64a, u8ca
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];
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badArrayTypes.forEach(function(o) {
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assertThrows(function() { Atomics.compareExchange(o, 0, 0, 0); },
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TypeError);
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assertThrows(function() { Atomics.load(o, 0); }, TypeError);
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assertThrows(function() { Atomics.store(o, 0, 0); }, TypeError);
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assertThrows(function() { Atomics.add(o, 0, 0); }, TypeError);
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assertThrows(function() { Atomics.sub(o, 0, 0); }, TypeError);
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assertThrows(function() { Atomics.and(o, 0, 0); }, TypeError);
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assertThrows(function() { Atomics.or(o, 0, 0); }, TypeError);
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assertThrows(function() { Atomics.xor(o, 0, 0); }, TypeError);
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assertThrows(function() { Atomics.exchange(o, 0, 0); }, TypeError);
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});
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})();
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(function TestBadIndex() {
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var sab = new SharedArrayBuffer(8);
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var si32a = new Int32Array(sab);
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var si32a2 = new Int32Array(sab, 4);
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// Indexes that are out of bounds when coerced via ToIndex should throw
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// RangeError.
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[-Infinity, Infinity].forEach(function(i) {
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assertThrows(function() { Atomics.compareExchange(si32a, i, 0); },
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RangeError);
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assertThrows(function() { Atomics.load(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.store(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.add(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.sub(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.and(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.or(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.xor(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.exchange(si32a, i, 0); }, RangeError);
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}, RangeError);
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// Out-of-bounds indexes should throw RangeError.
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[-1, 2, 100].forEach(function(i) {
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assertThrows(function() { Atomics.compareExchange(si32a, i, 0, 0); },
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RangeError);
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assertThrows(function() { Atomics.load(si32a, i); }, RangeError);
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assertThrows(function() { Atomics.store(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.add(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.sub(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.and(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.or(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.xor(si32a, i, 0); }, RangeError);
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assertThrows(function() { Atomics.exchange(si32a, i, 0); }, RangeError);
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}, RangeError);
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// Out-of-bounds indexes for array with offset should throw RangeError.
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[-1, 1, 100].forEach(function(i) {
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assertThrows(function() { Atomics.compareExchange(si32a2, i, 0, 0); });
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assertThrows(function() { Atomics.load(si32a2, i); }, RangeError);
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assertThrows(function() { Atomics.store(si32a2, i, 0); }, RangeError);
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assertThrows(function() { Atomics.add(si32a2, i, 0); }, RangeError);
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assertThrows(function() { Atomics.sub(si32a2, i, 0); }, RangeError);
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assertThrows(function() { Atomics.and(si32a2, i, 0); }, RangeError);
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assertThrows(function() { Atomics.or(si32a2, i, 0); }, RangeError);
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assertThrows(function() { Atomics.xor(si32a2, i, 0); }, RangeError);
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assertThrows(function() { Atomics.exchange(si32a2, i, 0); }, RangeError);
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});
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// Monkey-patch length and make sure these functions still throw.
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Object.defineProperty(si32a, 'length', {get: function() { return 1000; }});
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[2, 100].forEach(function(i) {
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assertThrows(function() { Atomics.compareExchange(si32a, i, 0, 0); });
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assertThrows(function() { Atomics.load(si32a, i); });
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assertThrows(function() { Atomics.store(si32a, i, 0); });
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assertThrows(function() { Atomics.add(si32a, i, 0); });
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assertThrows(function() { Atomics.sub(si32a, i, 0); });
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assertThrows(function() { Atomics.and(si32a, i, 0); });
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assertThrows(function() { Atomics.or(si32a, i, 0); });
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assertThrows(function() { Atomics.xor(si32a, i, 0); });
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assertThrows(function() { Atomics.exchange(si32a, i, 0); });
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});
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})();
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(function TestGoodIndex() {
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var sab = new SharedArrayBuffer(64);
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var si32a = new Int32Array(sab);
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var si32a2 = new Int32Array(sab, 32);
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var testOp = function(op, ia, index, expectedIndex, name) {
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for (var i = 0; i < ia.length; ++i)
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ia[i] = i * 2;
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ia[expectedIndex] = 0;
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var result = op(ia, index, 0, 0);
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assertEquals(0, result, name);
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assertEquals(0, ia[expectedIndex], name);
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for (var i = 0; i < ia.length; ++i) {
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if (i == expectedIndex) continue;
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assertEquals(i * 2, ia[i], name);
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}
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};
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// These values all map to index 0
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[-0, 0, 0.0, null, false, NaN, {}, '0.2', 'hi', undefined].forEach(
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function(i) {
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var name = String(i);
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[si32a, si32a2].forEach(function(array) {
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testOp(Atomics.compareExchange, array, i, 0, name);
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testOp(Atomics.load, array, i, 0, name);
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testOp(Atomics.store, array, i, 0, name);
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testOp(Atomics.add, array, i, 0, name);
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testOp(Atomics.sub, array, i, 0, name);
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testOp(Atomics.and, array, i, 0, name);
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testOp(Atomics.or, array, i, 0, name);
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testOp(Atomics.xor, array, i, 0, name);
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testOp(Atomics.exchange, array, i, 0, name);
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});
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});
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// These values all map to index 3
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var valueOf = {valueOf: function(){ return 3;}};
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var toString = {toString: function(){ return '3';}};
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[3, 3.0, '3', '3.0', valueOf, toString].forEach(function(i) {
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var name = String(i);
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[si32a, si32a2].forEach(function(array) {
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testOp(Atomics.compareExchange, array, i, 3, name);
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testOp(Atomics.load, array, i, 3, name);
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testOp(Atomics.store, array, i, 3, name);
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testOp(Atomics.add, array, i, 3, name);
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testOp(Atomics.sub, array, i, 3, name);
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testOp(Atomics.and, array, i, 3, name);
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testOp(Atomics.or, array, i, 3, name);
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testOp(Atomics.xor, array, i, 3, name);
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testOp(Atomics.exchange, array, i, 3, name);
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});
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});
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})();
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function clearArray(sab) {
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var ui8 = new Uint8Array(sab);
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for (var i = 0; i < sab.byteLength; ++i) {
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ui8[i] = 0;
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}
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}
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(function TestCompareExchange() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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// array[i] == 0, CAS will store
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assertEquals(0, Atomics.compareExchange(array, i, 0, 50), name);
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assertEquals(50, array[i], name);
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// array[i] == 50, CAS will not store
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assertEquals(50, Atomics.compareExchange(array, i, 0, 100), name);
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assertEquals(50, array[i], name);
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}
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})
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});
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})();
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(function TestLoad() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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array[i] = 0;
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assertEquals(0, Atomics.load(array, i), name);
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array[i] = 50;
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assertEquals(50, Atomics.load(array, i), name);
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}
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})
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});
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// Test Smi range
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(function () {
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var sab = new SharedArrayBuffer(4);
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var i32 = new Int32Array(sab);
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var u32 = new Uint32Array(sab);
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function testLoad(signedValue, unsignedValue) {
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u32[0] = unsignedValue;
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assertEquals(unsignedValue, Atomics.load(u32, 0));
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assertEquals(signedValue, Atomics.load(i32, 0));
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}
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testLoad(0x3fffffff, 0x3fffffff); // 2**30-1 (always smi)
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testLoad(0x40000000, 0x40000000); // 2**30 (smi if signed and 32-bits)
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testLoad(0x80000000, -0x80000000); // 2**31 (smi if signed and 32-bits)
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testLoad(0xffffffff, -1); // 2**31 (smi if signed)
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});
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})();
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(function TestStore() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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assertEquals(50, Atomics.store(array, i, 50), name);
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assertEquals(50, array[i], name);
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assertEquals(100, Atomics.store(array, i, 100), name);
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assertEquals(100, array[i], name);
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}
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})
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});
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})();
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(function TestAdd() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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assertEquals(0, Atomics.add(array, i, 50), name);
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assertEquals(50, array[i], name);
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assertEquals(50, Atomics.add(array, i, 70), name);
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assertEquals(120, array[i], name);
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}
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})
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});
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})();
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(function TestSub() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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array[i] = 120;
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assertEquals(120, Atomics.sub(array, i, 50), name);
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assertEquals(70, array[i], name);
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assertEquals(70, Atomics.sub(array, i, 70), name);
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assertEquals(0, array[i], name);
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}
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})
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});
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})();
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(function TestAnd() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(sta);
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for (var i = 0; i < array.length; ++i) {
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array[i] = 0x3f;
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assertEquals(0x3f, Atomics.and(array, i, 0x30), name);
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assertEquals(0x30, array[i], name);
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assertEquals(0x30, Atomics.and(array, i, 0x20), name);
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assertEquals(0x20, array[i], name);
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}
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})
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});
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})();
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(function TestOr() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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array[i] = 0x30;
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assertEquals(0x30, Atomics.or(array, i, 0x1c), name);
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assertEquals(0x3c, array[i], name);
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assertEquals(0x3c, Atomics.or(array, i, 0x09), name);
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assertEquals(0x3d, array[i], name);
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}
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})
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});
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})();
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(function TestXor() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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array[i] = 0x30;
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assertEquals(0x30, Atomics.xor(array, i, 0x1c), name);
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assertEquals(0x2c, array[i], name);
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assertEquals(0x2c, Atomics.xor(array, i, 0x09), name);
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assertEquals(0x25, array[i], name);
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}
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})
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});
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})();
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(function TestExchange() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var sta2 = new t.constr(sab, 5 * t.constr.BYTES_PER_ELEMENT);
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[sta, sta2].forEach(function(array) {
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clearArray(array.buffer);
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var name = Object.prototype.toString.call(array);
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for (var i = 0; i < array.length; ++i) {
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array[i] = 0x30;
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assertEquals(0x30, Atomics.exchange(array, i, 0x1c), name);
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assertEquals(0x1c, array[i], name);
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assertEquals(0x1c, Atomics.exchange(array, i, 0x09), name);
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assertEquals(0x09, array[i], name);
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}
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})
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});
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})();
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(function TestIsLockFree() {
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// Various invalid cases.
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var valueOf = {valueOf: function(){ return 3;}};
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var toString = {toString: function(){ return '3';}};
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var invalid = [3.14, 'foo', Infinity, NaN, false, undefined, valueOf,
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toString];
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invalid.forEach(function(v) {
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assertEquals(false, Atomics.isLockFree(v), JSON.stringify(v));
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});
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// For all platforms we support, 1, 2 and 4 bytes should be lock-free.
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assertEquals(true, Atomics.isLockFree(1));
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assertEquals(true, Atomics.isLockFree(2));
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assertEquals(true, Atomics.isLockFree(4));
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// Sizes that aren't equal to a typedarray BYTES_PER_ELEMENT always return
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// false.
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var validSizes = {};
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IntegerTypedArrayConstructors.forEach(function(t) {
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validSizes[t.constr.BYTES_PER_ELEMENT] = true;
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});
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for (var i = 0; i < 1000; ++i) {
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if (!validSizes[i]) {
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assertEquals(false, Atomics.isLockFree(i));
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}
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}
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})();
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(function TestToNumber() {
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IntegerTypedArrayConstructors.forEach(function(t) {
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var sab = new SharedArrayBuffer(1 * t.constr.BYTES_PER_ELEMENT);
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var sta = new t.constr(sab);
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var valueOf = {valueOf: function(){ return 3;}};
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var toString = {toString: function(){ return '3';}};
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[false, true, undefined, valueOf, toString].forEach(function(v) {
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var name = Object.prototype.toString.call(sta) + ' - ' + v;
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// CompareExchange
|
|
sta[0] = 50;
|
|
assertEquals(50, Atomics.compareExchange(sta, 0, v, v), name);
|
|
|
|
// Store
|
|
assertEquals(v|0, Atomics.store(sta, 0, v), name);
|
|
assertEquals(v|0, sta[0], name);
|
|
|
|
// Add
|
|
sta[0] = 120;
|
|
assertEquals(120, Atomics.add(sta, 0, v), name);
|
|
assertEquals(120 + (v|0), sta[0], name);
|
|
|
|
// Sub
|
|
sta[0] = 70;
|
|
assertEquals(70, Atomics.sub(sta, 0, v), name);
|
|
assertEquals(70 - (v|0), sta[0]);
|
|
|
|
// And
|
|
sta[0] = 0x20;
|
|
assertEquals(0x20, Atomics.and(sta, 0, v), name);
|
|
assertEquals(0x20 & (v|0), sta[0]);
|
|
|
|
// Or
|
|
sta[0] = 0x3d;
|
|
assertEquals(0x3d, Atomics.or(sta, 0, v), name);
|
|
assertEquals(0x3d | (v|0), sta[0]);
|
|
|
|
// Xor
|
|
sta[0] = 0x25;
|
|
assertEquals(0x25, Atomics.xor(sta, 0, v), name);
|
|
assertEquals(0x25 ^ (v|0), sta[0]);
|
|
|
|
// Exchange
|
|
sta[0] = 0x09;
|
|
assertEquals(0x09, Atomics.exchange(sta, 0, v), name);
|
|
assertEquals(v|0, sta[0]);
|
|
});
|
|
});
|
|
})();
|
|
|
|
(function TestWrapping() {
|
|
IntegerTypedArrayConstructors.forEach(function(t) {
|
|
var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
|
|
var sta = new t.constr(sab);
|
|
var name = Object.prototype.toString.call(sta);
|
|
var range = t.max - t.min + 1;
|
|
var offset;
|
|
var operand;
|
|
var val, newVal;
|
|
var valWrapped, newValWrapped;
|
|
|
|
for (offset = -range; offset <= range; offset += range) {
|
|
// CompareExchange
|
|
sta[0] = val = 0;
|
|
newVal = val + offset + 1;
|
|
newValWrapped = t.toRange(newVal);
|
|
assertEquals(val, Atomics.compareExchange(sta, 0, val, newVal), name);
|
|
assertEquals(newValWrapped, sta[0], name);
|
|
|
|
sta[0] = val = t.min;
|
|
newVal = val + offset - 1;
|
|
newValWrapped = t.toRange(newVal);
|
|
assertEquals(val, Atomics.compareExchange(sta, 0, val, newVal), name);
|
|
assertEquals(newValWrapped, sta[0], name);
|
|
|
|
// Store
|
|
sta[0] = 0;
|
|
val = t.max + offset + 1;
|
|
valWrapped = t.toRange(val);
|
|
assertEquals(val, Atomics.store(sta, 0, val), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
sta[0] = val = t.min + offset - 1;
|
|
valWrapped = t.toRange(val);
|
|
assertEquals(val, Atomics.store(sta, 0, val), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
// Add
|
|
sta[0] = val = t.max;
|
|
operand = offset + 1;
|
|
valWrapped = t.toRange(val + operand);
|
|
assertEquals(val, Atomics.add(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
sta[0] = val = t.min;
|
|
operand = offset - 1;
|
|
valWrapped = t.toRange(val + operand);
|
|
assertEquals(val, Atomics.add(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
// Sub
|
|
sta[0] = val = t.max;
|
|
operand = offset - 1;
|
|
valWrapped = t.toRange(val - operand);
|
|
assertEquals(val, Atomics.sub(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
sta[0] = val = t.min;
|
|
operand = offset + 1;
|
|
valWrapped = t.toRange(val - operand);
|
|
assertEquals(val, Atomics.sub(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
// There's no way to wrap results with logical operators, just test that
|
|
// using an out-of-range value is properly wrapped/clamped when written
|
|
// to memory.
|
|
|
|
// And
|
|
sta[0] = val = 0xf;
|
|
operand = 0x3 + offset;
|
|
valWrapped = t.toRange(val & operand);
|
|
assertEquals(val, Atomics.and(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
// Or
|
|
sta[0] = val = 0x12;
|
|
operand = 0x22 + offset;
|
|
valWrapped = t.toRange(val | operand);
|
|
assertEquals(val, Atomics.or(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
// Xor
|
|
sta[0] = val = 0x12;
|
|
operand = 0x22 + offset;
|
|
valWrapped = t.toRange(val ^ operand);
|
|
assertEquals(val, Atomics.xor(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
|
|
// Exchange
|
|
sta[0] = val = 0x12;
|
|
operand = 0x22 + offset;
|
|
valWrapped = t.toRange(operand);
|
|
assertEquals(val, Atomics.exchange(sta, 0, operand), name);
|
|
assertEquals(valWrapped, sta[0], name);
|
|
}
|
|
|
|
});
|
|
})();
|
|
|
|
(function TestValidateIndexBeforeValue() {
|
|
var testOp = function(op, sta, name) {
|
|
var valueof_has_been_called = 0;
|
|
var value = {valueOf: function() { valueof_has_been_called = 1; return 0;}};
|
|
var index = -1;
|
|
|
|
// The index should be checked before calling ToInteger on the value, so
|
|
// valueof_has_been_called should not be modified.
|
|
sta[0] = 0;
|
|
assertThrows(function() { op(sta, index, value, value); }, RangeError);
|
|
assertEquals(0, valueof_has_been_called);
|
|
};
|
|
|
|
IntegerTypedArrayConstructors.forEach(function(t) {
|
|
var sab = new SharedArrayBuffer(10 * t.constr.BYTES_PER_ELEMENT);
|
|
var sta = new t.constr(sab);
|
|
var name = Object.prototype.toString.call(sta);
|
|
|
|
testOp(Atomics.compareExchange, sta, name);
|
|
testOp(Atomics.load, sta, name);
|
|
testOp(Atomics.store, sta, name);
|
|
testOp(Atomics.add, sta, name);
|
|
testOp(Atomics.sub, sta, name);
|
|
testOp(Atomics.and, sta, name);
|
|
testOp(Atomics.or, sta, name);
|
|
testOp(Atomics.xor, sta, name);
|
|
testOp(Atomics.exchange, sta, name);
|
|
});
|
|
})();
|