Function Module

deps/v8/test/mjsunit/asm/atomics-exchange.js:5–60

(stdlib, foreign, heap, offset)

// found in the LICENSE file.

function Module(stdlib, foreign, heap, offset) {
  "use asm";
  var MEM8 = new stdlib.Int8Array(heap, offset);
  var MEM16 = new stdlib.Int16Array(heap, offset);
  var MEM32 = new stdlib.Int32Array(heap, offset);
  var MEMU8 = new stdlib.Uint8Array(heap, offset);
  var MEMU16 = new stdlib.Uint16Array(heap, offset);
  var MEMU32 = new stdlib.Uint32Array(heap, offset);
  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);