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104 lines
2.5 KiB
104 lines
2.5 KiB
// Copyright 2015 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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function Module(stdlib, foreign, heap, offset) {
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"use asm";
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var MEM8 = new stdlib.Int8Array(heap, offset);
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var MEM16 = new stdlib.Int16Array(heap, offset);
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var MEM32 = new stdlib.Int32Array(heap, offset);
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var MEMU8 = new stdlib.Uint8Array(heap, offset);
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var MEMU16 = new stdlib.Uint16Array(heap, offset);
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var MEMU32 = new stdlib.Uint32Array(heap, offset);
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var exchange = stdlib.Atomics.exchange;
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var fround = stdlib.Math.fround;
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function exchangei8(i, x) {
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i = i | 0;
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x = x | 0;
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return exchange(MEM8, i, x)|0;
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}
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function exchangei16(i, x) {
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i = i | 0;
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x = x | 0;
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return exchange(MEM16, i, x)|0;
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}
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function exchangei32(i, x) {
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i = i | 0;
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x = x | 0;
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return exchange(MEM32, i, x)|0;
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}
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function exchangeu8(i, x) {
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i = i | 0;
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x = x >>> 0;
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return exchange(MEMU8, i, x)>>>0;
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}
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function exchangeu16(i, x) {
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i = i | 0;
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x = x >>> 0;
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return exchange(MEMU16, i, x)>>>0;
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}
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function exchangeu32(i, x) {
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i = i | 0;
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x = x >>> 0;
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return exchange(MEMU32, i, x)>>>0;
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}
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return {
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exchangei8: exchangei8,
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exchangei16: exchangei16,
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exchangei32: exchangei32,
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exchangeu8: exchangeu8,
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exchangeu16: exchangeu16,
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exchangeu32: exchangeu32,
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};
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}
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var sab = new SharedArrayBuffer(16);
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var m = Module(this, {}, sab);
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function clearArray() {
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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 testElementType(taConstr, f, offset) {
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clearArray();
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var ta = new taConstr(sab, offset);
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var name = Object.prototype.toString.call(ta);
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ta[0] = 0x7f;
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assertEquals(0x7f, f(0, 0xf), name);
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assertEquals(0xf, ta[0]);
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// out of bounds
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assertThrows(function() { f(-1, 0); });
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assertThrows(function() { f(ta.length, 0); });
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}
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function testElement(m, offset) {
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testElementType(Int8Array, m.exchangei8, offset);
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testElementType(Int16Array, m.exchangei16, offset);
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testElementType(Int32Array, m.exchangei32, offset);
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testElementType(Uint8Array, m.exchangeu8, offset);
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testElementType(Uint16Array, m.exchangeu16, offset);
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testElementType(Uint32Array, m.exchangeu32, offset);
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}
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var offset = 0;
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var sab = new SharedArrayBuffer(16);
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var m1 = Module(this, {}, sab, offset);
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testElement(m1, offset);
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offset = 32;
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sab = new SharedArrayBuffer(64);
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var m2 = Module(this, {}, sab, offset);
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testElement(m2, offset);
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