Add perf test for isolate snapshot and script caching [skip ci]

Author: pinepain

perf/README.md

@@ -7,5 +7,5 @@ For more details see [phpbench documentation](http://phpbench.readthedocs.io/en/
 e.g.
 
  - `./vendor/bin/phpbench run src/SetObjectProperty.php --report=aggregate --retry-threshold=5`
-
  - `./vendor/bin/phpbench run src/CreatePrimitiveValue.php --report=aggregate --retry-threshold=5`
+ - `./vendor/bin/phpbench run src/IsolateSnapshotAndScriptCaching.php --report=aggregate --retry-threshold=5`

perf/src/IsolateSnapshotAndScriptCaching.php

@@ -0,0 +1,109 @@
+<?php declare(strict_types=1);
+
+/**
+ * This file is part of the pinepain/php-v8 PHP extension.
+ *
+ * Copyright (c) 2015-2018 Bogdan Padalko <[email protected]>
+ *
+ * Licensed under the MIT license: http://opensource.org/licenses/MIT
+ *
+ * For the full copyright and license information, please view the
+ * LICENSE file that was distributed with this source or visit
+ * http://opensource.org/licenses/MIT
+ */
+
+
+namespace Pinepain\V8\Tests\Perf;
+
+
+use V8\Context;
+use V8\Isolate;
+use V8\ScriptCompiler;
+use V8\StartupData;
+use V8\StringValue;
+
+
+/**
+ * @Warmup(10)
+ * @Revs(100)
+ * @Iterations(25)
+ * @BeforeMethods("init")
+ */
+class IsolateSnapshotAndScriptCaching
+{
+    /**
+     * @var Isolate
+     */
+    private $isolate;
+    /**
+     * @var Context
+     */
+    private $context;
+    /**
+     * @var StartupData
+     */
+    private $startup_data;
+    /**
+     * @var ScriptCompiler\CachedData
+     */
+    private $cached_data;
+
+    private $source = 'function test_snapshot() { return "hello, world";}';
+
+    public function init()
+    {
+        $this->source       = file_get_contents(__DIR__ . '/base.js');
+        $this->startup_data = StartupData::createFromSource($this->source);
+        //file_put_contents(__DIR__ . '/base.js.cache', $this->startup_data->getData());
+
+        $this->isolate = $isolate = new Isolate();
+        $this->context = $context = new Context($isolate);
+
+        $source_string = new StringValue($isolate, $this->source);
+        $source        = new ScriptCompiler\Source($source_string);
+
+        $unbound_script = ScriptCompiler::compileUnboundScript($context, $source);
+
+        $this->cached_data = ScriptCompiler::createCodeCache($unbound_script, $source_string);
+    }
+
+    public function benchColdIsolateNoScriptCache()
+    {
+        $isolate = new Isolate();
+        $context = new Context($isolate);
+
+        $source_string = new StringValue($isolate, $this->source);
+        $source        = new ScriptCompiler\Source($source_string);
+        ScriptCompiler::compile($context, $source)->run($context);
+    }
+
+    public function benchColdIsolateWithScriptCache()
+    {
+        $isolate = new Isolate();
+        $context = new Context($isolate);
+
+        $source_string = new StringValue($isolate, $this->source);
+        $source        = new ScriptCompiler\Source($source_string, null, $this->cached_data);
+        ScriptCompiler::compile($context, $source, ScriptCompiler::OPTION_CONSUME_CODE_CACHE)->run($context);
+    }
+
+    public function benchWarmIsolateNoScriptCache()
+    {
+        $isolate = new Isolate($this->startup_data);
+        $context = new Context($isolate);
+
+        $source_string = new StringValue($isolate, $this->source);
+        $source        = new ScriptCompiler\Source($source_string);
+        ScriptCompiler::compile($context, $source)->run($context);
+    }
+
+    public function benchWarmIsolateWithScriptCache()
+    {
+        $isolate = new Isolate($this->startup_data);
+        $context = new Context($isolate);
+
+        $source_string = new StringValue($isolate, $this->source);
+        $source        = new ScriptCompiler\Source($source_string, null, $this->cached_data);
+        ScriptCompiler::compile($context, $source, ScriptCompiler::OPTION_CONSUME_CODE_CACHE)->run($context);
+    }
+}