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Unified Diff: test/mjsunit/asm/atomics-exchange.js

Issue 1162503002: Implement Atomics API (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: add more symbols to anonymous namespace Created 5 years, 7 months ago
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Index: test/mjsunit/asm/atomics-exchange.js
diff --git a/test/mjsunit/asm/atomics-exchange.js b/test/mjsunit/asm/atomics-exchange.js
new file mode 100644
index 0000000000000000000000000000000000000000..bb70322c7eff033946f900b7847f959f3685b655
--- /dev/null
+++ b/test/mjsunit/asm/atomics-exchange.js
@@ -0,0 +1,92 @@
+// 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-atomics --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);
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