Add script streaming API

src/background-parsing-task.h

+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_BACKGROUND_PARSING_TASK_H_
+#define V8_BACKGROUND_PARSING_TASK_H_
+
+#include "src/base/platform/platform.h"
+#include "src/base/platform/semaphore.h"
+#include "src/compiler.h"
+
+namespace v8 {
+namespace internal {
+
+class BackgroundParsingTask : public ScriptCompiler::ScriptStreamingTask {
+ public:
+  BackgroundParsingTask(ScriptCompiler::StreamedSource* source, bool allow_lazy,
+                        Isolate* isolate)
+      : source_(source),
+        script_data_(NULL),
+        hash_seed_(isolate->heap()->HashSeed()),
+        allow_lazy_(allow_lazy),
+        isolate_(isolate) {}

[Sven Panne, 2014/09/01 09:07:46]

Why do we remember the Isolate? Just passing the hash seed would result in less
coupling.

[marja, 2014/09/01 11:58:17]

Done.

+
+  virtual void Run();
+
+ private:
+  friend class v8::ScriptCompiler;
+
+  ScriptCompiler::StreamedSource* source_;
+  ScriptData* script_data_;
+  uint32_t hash_seed_;
+  bool allow_lazy_;
+  Isolate* isolate_;
+};
+}
+}  // namespace v8::internal
+
+#endif  // V8_BACKGROUND_PARSING_TASK_H_