diff options
Diffstat (limited to '')
-rw-r--r-- | testing/web-platform/tests/common/sab.js | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/testing/web-platform/tests/common/sab.js b/testing/web-platform/tests/common/sab.js new file mode 100644 index 0000000000..a3ea610e16 --- /dev/null +++ b/testing/web-platform/tests/common/sab.js @@ -0,0 +1,21 @@ +const createBuffer = (() => { + // See https://github.com/whatwg/html/issues/5380 for why not `new SharedArrayBuffer()` + let sabConstructor; + try { + sabConstructor = new WebAssembly.Memory({ shared:true, initial:0, maximum:0 }).buffer.constructor; + } catch(e) { + sabConstructor = null; + } + return (type, length, opts) => { + if (type === "ArrayBuffer") { + return new ArrayBuffer(length, opts); + } else if (type === "SharedArrayBuffer") { + if (sabConstructor && sabConstructor.name !== "SharedArrayBuffer") { + throw new Error("WebAssembly.Memory does not support shared:true"); + } + return new sabConstructor(length, opts); + } else { + throw new Error("type has to be ArrayBuffer or SharedArrayBuffer"); + } + } +})(); |