196d6aeec1
Having both flags is tedious, and it is unlikely you'd ever want them separately. R=jarin@chromium.org Review URL: https://codereview.chromium.org/1304163010 Cr-Commit-Position: refs/heads/master@{#30523}
93 lines
2.1 KiB
JavaScript
93 lines
2.1 KiB
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
// Flags: --harmony-sharedarraybuffer
|
|
|
|
function Module(stdlib, foreign, heap) {
|
|
"use asm";
|
|
var MEM8 = new stdlib.Int8Array(heap);
|
|
var MEM16 = new stdlib.Int16Array(heap);
|
|
var MEM32 = new stdlib.Int32Array(heap);
|
|
var MEMU8 = new stdlib.Uint8Array(heap);
|
|
var MEMU16 = new stdlib.Uint16Array(heap);
|
|
var MEMU32 = new stdlib.Uint32Array(heap);
|
|
var exchange = stdlib.Atomics.exchange;
|
|
var fround = stdlib.Math.fround;
|
|
|
|
function exchangei8(i, x) {
|
|
i = i | 0;
|
|
x = x | 0;
|
|
return exchange(MEM8, i, x)|0;
|
|
}
|
|
|
|
function exchangei16(i, x) {
|
|
i = i | 0;
|
|
x = x | 0;
|
|
return exchange(MEM16, i, x)|0;
|
|
}
|
|
|
|
function exchangei32(i, x) {
|
|
i = i | 0;
|
|
x = x | 0;
|
|
return exchange(MEM32, i, x)|0;
|
|
}
|
|
|
|
function exchangeu8(i, x) {
|
|
i = i | 0;
|
|
x = x >>> 0;
|
|
return exchange(MEMU8, i, x)>>>0;
|
|
}
|
|
|
|
function exchangeu16(i, x) {
|
|
i = i | 0;
|
|
x = x >>> 0;
|
|
return exchange(MEMU16, i, x)>>>0;
|
|
}
|
|
|
|
function exchangeu32(i, x) {
|
|
i = i | 0;
|
|
x = x >>> 0;
|
|
return exchange(MEMU32, i, x)>>>0;
|
|
}
|
|
|
|
return {
|
|
exchangei8: exchangei8,
|
|
exchangei16: exchangei16,
|
|
exchangei32: exchangei32,
|
|
exchangeu8: exchangeu8,
|
|
exchangeu16: exchangeu16,
|
|
exchangeu32: exchangeu32,
|
|
};
|
|
}
|
|
|
|
var sab = new SharedArrayBuffer(16);
|
|
var m = Module(this, {}, sab);
|
|
|
|
function clearArray() {
|
|
var ui8 = new Uint8Array(sab);
|
|
for (var i = 0; i < sab.byteLength; ++i) {
|
|
ui8[i] = 0;
|
|
}
|
|
}
|
|
|
|
function testElementType(taConstr, f) {
|
|
clearArray();
|
|
|
|
var ta = new taConstr(sab);
|
|
var name = Object.prototype.toString.call(ta);
|
|
ta[0] = 0x7f;
|
|
assertEquals(0x7f, f(0, 0xf), name);
|
|
assertEquals(0xf, ta[0]);
|
|
// out of bounds
|
|
assertEquals(0, f(-1, 0), name);
|
|
assertEquals(0, f(ta.length, 0), name);
|
|
}
|
|
|
|
testElementType(Int8Array, m.exchangei8);
|
|
testElementType(Int16Array, m.exchangei16);
|
|
testElementType(Int32Array, m.exchangei32);
|
|
testElementType(Uint8Array, m.exchangeu8);
|
|
testElementType(Uint16Array, m.exchangeu16);
|
|
testElementType(Uint32Array, m.exchangeu32);
|