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Unified Diff: src/background-parsing-task.h

Issue 366153002: Add script streaming API (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: rebased again? Created 6 years, 3 months ago
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Index: src/background-parsing-task.h
diff --git a/src/background-parsing-task.h b/src/background-parsing-task.h
new file mode 100644
index 0000000000000000000000000000000000000000..19c93a833a2cefe5e82af904c25086383ebac038
--- /dev/null
+++ b/src/background-parsing-task.h
@@ -0,0 +1,67 @@
+// 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"
+#include "src/parser.h"
+#include "src/smart-pointers.h"
+
+namespace v8 {
+namespace internal {
+
+class Parser;
+
+// Internal representation of v8::ScriptCompiler::StreamedSource. Contains all
+// data which needs to be transmitted between threads for background parsing,
+// finalizing it on the main thread, and compiling on the main thread.
+struct StreamedSource {
+ StreamedSource(ScriptCompiler::ExternalSourceStream* source_stream,
+ ScriptCompiler::StreamedSource::Encoding encoding)
+ : source_stream(source_stream),
+ encoding(encoding),
+ hash_seed(0),
+ allow_lazy(false) {}
+
+ // Internal implementation of v8::ScriptCompiler::StreamedSource.
+ SmartPointer<ScriptCompiler::ExternalSourceStream> source_stream;
+ ScriptCompiler::StreamedSource::Encoding encoding;
+ SmartPointer<ScriptCompiler::CachedData> cached_data;
+
+ // Data needed for parsing, and data needed to to be passed between thread
+ // between parsing and compilation. These need to be initialized before the
+ // compilation starts.
+ UnicodeCache unicode_cache;
+ SmartPointer<CompilationInfo> info;
+ uint32_t hash_seed;
+ bool allow_lazy;
+ SmartPointer<Parser> parser;
+
+ private:
+ // Prevent copying. Not implemented.
+ StreamedSource(const StreamedSource&);
+ StreamedSource& operator=(const StreamedSource&);
+};
+
+
+class BackgroundParsingTask : public ScriptCompiler::ScriptStreamingTask {
+ public:
+ BackgroundParsingTask(StreamedSource* source,
+ ScriptCompiler::CompileOptions options, int stack_size,
+ Isolate* isolate);
+
+ virtual void Run();
+
+ private:
+ StreamedSource* source_; // Not owned.
+ ScriptCompiler::CompileOptions options_;
+ int stack_size_;
+};
+}
+} // namespace v8::internal
+
+#endif // V8_BACKGROUND_PARSING_TASK_H_
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