benchmark: add parameters to text-decoder benchmark

PR-URL: #45363
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>

benchmark/util/text-decoder.js

@@ -6,12 +6,28 @@ const bench = common.createBenchmark(main, {
   encoding: ['utf-8', 'latin1', 'iso-8859-3'],
   ignoreBOM: [0, 1],
   len: [256, 1024 * 16, 1024 * 512],
-  n: [1e6]
+  n: [1e2],
+  type: ['SharedArrayBuffer', 'ArrayBuffer', 'Buffer']
 });
 
-function main({ encoding, len, n, ignoreBOM }) {
-  const buf = Buffer.allocUnsafe(len);
+function main({ encoding, len, n, ignoreBOM, type }) {
   const decoder = new TextDecoder(encoding, { ignoreBOM });
+  let buf;
+
+  switch (type) {
+    case 'SharedArrayBuffer': {
+      buf = new SharedArrayBuffer(len);
+      break;
+    }
+    case 'ArrayBuffer': {
+      buf = new ArrayBuffer(len);
+      break;
+    }
+    case 'Buffer': {
+      buf = Buffer.allocUnsafe(len);
+      break;
+    }
+  }
 
   bench.start();
   for (let i = 0; i < n; i++) {