1// Copyright 2014 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef V8_BACKGROUND_PARSING_TASK_H_
6#define V8_BACKGROUND_PARSING_TASK_H_
7
8#include "src/base/platform/platform.h"
9#include "src/base/platform/semaphore.h"
10#include "src/base/smart-pointers.h"
11#include "src/compiler.h"
12#include "src/parsing/parser.h"
13
14namespace v8 {
15namespace internal {
16
17// Internal representation of v8::ScriptCompiler::StreamedSource. Contains all
18// data which needs to be transmitted between threads for background parsing,
19// finalizing it on the main thread, and compiling on the main thread.
20struct StreamedSource {
21  StreamedSource(ScriptCompiler::ExternalSourceStream* source_stream,
22                 ScriptCompiler::StreamedSource::Encoding encoding)
23      : source_stream(source_stream), encoding(encoding) {}
24
25  // Internal implementation of v8::ScriptCompiler::StreamedSource.
26  base::SmartPointer<ScriptCompiler::ExternalSourceStream> source_stream;
27  ScriptCompiler::StreamedSource::Encoding encoding;
28  base::SmartPointer<ScriptCompiler::CachedData> cached_data;
29
30  // Data needed for parsing, and data needed to to be passed between thread
31  // between parsing and compilation. These need to be initialized before the
32  // compilation starts.
33  UnicodeCache unicode_cache;
34  base::SmartPointer<Zone> zone;
35  base::SmartPointer<ParseInfo> info;
36  base::SmartPointer<Parser> parser;
37
38 private:
39  // Prevent copying. Not implemented.
40  StreamedSource(const StreamedSource&);
41  StreamedSource& operator=(const StreamedSource&);
42};
43
44
45class BackgroundParsingTask : public ScriptCompiler::ScriptStreamingTask {
46 public:
47  BackgroundParsingTask(StreamedSource* source,
48                        ScriptCompiler::CompileOptions options, int stack_size,
49                        Isolate* isolate);
50
51  virtual void Run();
52
53 private:
54  StreamedSource* source_;  // Not owned.
55  int stack_size_;
56};
57}  // namespace internal
58}  // namespace v8
59
60#endif  // V8_BACKGROUND_PARSING_TASK_H_
61