File: sab.js

package info (click to toggle)
firefox 143.0.3-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 4,617,328 kB
  • sloc: cpp: 7,478,492; javascript: 6,417,157; ansic: 3,720,058; python: 1,396,372; xml: 627,523; asm: 438,677; java: 186,156; sh: 63,477; makefile: 19,171; objc: 13,059; perl: 12,983; yacc: 4,583; cs: 3,846; pascal: 3,405; lex: 1,720; ruby: 1,003; exp: 762; php: 436; lisp: 258; awk: 247; sql: 66; sed: 53; csh: 10
file content (21 lines) | stat: -rw-r--r-- 768 bytes parent folder | download | duplicates (21) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
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");
    }
  }
})();