Perf testcases for JSON/JX

tests/perf/test-json-serialize-forceslow.js

@@ -0,0 +1,38 @@
+if (typeof print !== 'function') { print = console.log; }
+
+function build() {
+    var obj = {};
+
+    obj.key1 = 'foo';
+    obj.key2 = 'bar';
+    obj.key3 = 'quux';
+    obj.key4 = 'baz';
+    obj.key5 = 'quuux';
+    obj.key6 = [ 'foo', 'bar', 'quux', 'baz', 'quuux' ];
+    obj.key7 = [ undefined, null, true, 123.456, 1e200, {}, {}, {} ];
+
+    // Force to slow path (at least in Duktape 1.5.x):
+    // .toJSON() causes a bailout, but because the value
+    // is not callable it has no impact on the slow path.
+    Object.defineProperty(obj, 'toJSON', { value: 123, enumerable: false });
+
+    return obj;
+}
+
+function test() {
+    var obj;
+    var i;
+    var ignore;
+
+    obj = build();
+    for (i = 0; i < 4e5; i++) {
+        ignore = JSON.stringify(obj);
+    }
+}
+
+try {
+    test();
+} catch (e) {
+    print(e.stack || e);
+    throw e;
+}

tests/perf/test-jx-serialize-bufobj-forceslow.js

@@ -0,0 +1,36 @@
+if (typeof print !== 'function') { print = console.log; }
+
+function build() {
+    var obj = {};
+    var ab = new ArrayBuffer(32);
+    var vw = new Uint32Array(ab, 4, 3);
+    var i;
+    for (i = 0; i < ab.length; i++) {
+      ab[i] = i;
+    }
+
+    return {
+        foo: [ ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab ],
+        bar: [ vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw ],
+        toJSON: 123  // forces slow path in Duktape 1.5.x, but not called
+    };
+}
+
+function test() {
+    var obj;
+    var i;
+    var ignore;
+
+    obj = build();
+    for (i = 0; i < 3e5; i++) {
+        ignore = Duktape.enc('jx', obj);
+    }
+    //print(ignore);
+}
+
+try {
+    test();
+} catch (e) {
+    print(e.stack || e);
+    throw e;
+}

tests/perf/test-jx-serialize-bufobj.js

@@ -0,0 +1,35 @@
+if (typeof print !== 'function') { print = console.log; }
+
+function build() {
+    var obj = {};
+    var ab = new ArrayBuffer(32);
+    var vw = new Uint32Array(ab, 4, 3);
+    var i;
+    for (i = 0; i < ab.length; i++) {
+      ab[i] = i;
+    }
+
+    return {
+        foo: [ ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab, ab ],
+        bar: [ vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw, vw ]
+    };
+}
+
+function test() {
+    var obj;
+    var i;
+    var ignore;
+
+    obj = build();
+    for (i = 0; i < 3e5; i++) {
+        ignore = Duktape.enc('jx', obj);
+    }
+    //print(ignore);
+}
+
+try {
+    test();
+} catch (e) {
+    print(e.stack || e);
+    throw e;
+}