added memory benchmark from #552

1 files changed, 46 insertions, 0 deletions

diff --git a/perf/memory.js b/perf/memory.js
new file mode 100644
index 0000000..b2eaebb
--- /dev/null
+++ b/perf/memory.js
@@ -0,0 +1,46 @@
+if (process.execArgv[0] !== "--expose-gc") {
+  console.error("please run with node --expose-gc");
+  process.exit(1);
+}
+
+var async = require("../");
+global.gc();
+var startMem = process.memoryUsage().heapUsed;
+
+function waterfallTest(cb) {
+  var functions = [];
+
+  for(var i = 0; i < 10000; i++) {
+    functions.push(function leaky(next) {
+      function func1(cb) {return cb(); }
+
+      function func2(callback) {
+        if (true) {
+          callback();
+          //return next();  // Should be callback here.
+        }
+      }
+
+      function func3(cb) {return cb(); }
+
+      async.waterfall([
+        func1,
+        func2,
+        func3
+      ], next);
+    });
+  }
+
+  async.parallel(functions, cb);
+}
+
+function reportMemory() {
+  global.gc();
+  var increase = process.memoryUsage().heapUsed - startMem;
+  console.log("memory increase: " +
+    (+(increase / 1024).toPrecision(3)) + "kB");
+}
+
+waterfallTest(function () {
+  setTimeout(reportMemory, 0);
+});