benchmark: add benchmark for vm.runIn*()

Introduce benchmarks for vm.runInContext() and vm.runInThisContext().

PR-URL: nodejs#10816
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Brian White <mscdex@mscdex.net>

benchmark/vm/run-in-context.js

@@ -0,0 +1,32 @@
+'use strict';
+
+const common = require('../common.js');
+
+const bench = common.createBenchmark(main, {
+  n: [1],
+  breakOnSigint: [0, 1],
+  withSigintListener: [0, 1]
+});
+
+const vm = require('vm');
+
+function main(conf) {
+  const n = +conf.n;
+  const options = conf.breakOnSigint ? {breakOnSigint: true} : {};
+  const withSigintListener = !!conf.withSigintListener;
+
+  process.removeAllListeners('SIGINT');
+  if (withSigintListener)
+    process.on('SIGINT', () => {});
+
+  var i = 0;
+
+  const contextifiedSandbox = vm.createContext();
+
+  common.v8ForceOptimization(vm.runInContext,
+                             '0', contextifiedSandbox, options);
+  bench.start();
+  for (; i < n; i++)
+    vm.runInContext('0', contextifiedSandbox, options);
+  bench.end(n);
+}

benchmark/vm/run-in-this-context.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const common = require('../common.js');
+
+const bench = common.createBenchmark(main, {
+  n: [1],
+  breakOnSigint: [0, 1],
+  withSigintListener: [0, 1]
+});
+
+const vm = require('vm');
+
+function main(conf) {
+  const n = +conf.n;
+  const options = conf.breakOnSigint ? {breakOnSigint: true} : {};
+  const withSigintListener = !!conf.withSigintListener;
+
+  process.removeAllListeners('SIGINT');
+  if (withSigintListener)
+    process.on('SIGINT', () => {});
+
+  var i = 0;
+
+  common.v8ForceOptimization(vm.runInThisContext, '0', options);
+  bench.start();
+  for (; i < n; i++)
+    vm.runInThisContext('0', options);
+  bench.end(n);
+}