benchmark: create napi benchmark directory

Move C++ benchmark useful for NAPI to its own directory. This will
isolate the benchmark so it can be excluded from testing that applies to
all other benchmarks but not this one.

PR-URL: https://github.com/nodejs/node/pull/21046
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

1 files changed, 50 insertions, 0 deletions

diff --git a/benchmark/napi/function_call/index.js b/benchmark/napi/function_call/index.js
new file mode 100644
index 0000000000..cbc512c972
--- /dev/null
+++ b/benchmark/napi/function_call/index.js
@@ -0,0 +1,50 @@
+// show the difference between calling a short js function
+// relative to a comparable C++ function.
+// Reports n of calls per second.
+// Note that JS speed goes up, while cxx speed stays about the same.
+'use strict';
+
+const assert = require('assert');
+const common = require('../../common.js');
+
+// this fails when we try to open with a different version of node,
+// which is quite common for benchmarks.  so in that case, just
+// abort quietly.
+
+try {
+  var binding = require('./build/Release/binding');
+} catch (er) {
+  console.error('misc/function_call.js Binding failed to load');
+  process.exit(0);
+}
+const cxx = binding.hello;
+
+let napi_binding;
+try {
+  napi_binding = require('./build/Release/napi_binding');
+} catch (er) {
+  console.error('misc/function_call/index.js NAPI-Binding failed to load');
+  process.exit(0);
+}
+const napi = napi_binding.hello;
+
+var c = 0;
+function js() {
+  return c++;
+}
+
+assert(js() === cxx());
+
+const bench = common.createBenchmark(main, {
+  type: ['js', 'cxx', 'napi'],
+  n: [1e6, 1e7, 5e7]
+});
+
+function main({ n, type }) {
+  const fn = type === 'cxx' ? cxx : type === 'napi' ? napi : js;
+  bench.start();
+  for (var i = 0; i < n; i++) {
+    fn();
+  }
+  bench.end(n);
+}