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| 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/compiler.h" |
| 11 #include "src/parser.h" |
| 12 #include "src/smart-pointers.h" |
| 13 |
| 14 namespace v8 { |
| 15 namespace internal { |
| 16 |
| 17 class Parser; |
| 18 |
| 19 // Internal representation of v8::ScriptCompiler::StreamedSource. Contains all |
| 20 // data which needs to be transmitted between threads for background parsing, |
| 21 // finalizing it on the main thread, and compiling on the main thread. |
| 22 struct StreamedSource { |
| 23 StreamedSource(ScriptCompiler::ExternalSourceStream* source_stream, |
| 24 ScriptCompiler::StreamedSource::Encoding encoding) |
| 25 : source_stream(source_stream), |
| 26 encoding(encoding), |
| 27 hash_seed(0), |
| 28 allow_lazy(false) {} |
| 29 |
| 30 // Internal implementation of v8::ScriptCompiler::StreamedSource. |
| 31 SmartPointer<ScriptCompiler::ExternalSourceStream> source_stream; |
| 32 ScriptCompiler::StreamedSource::Encoding encoding; |
| 33 SmartPointer<ScriptCompiler::CachedData> cached_data; |
| 34 |
| 35 // Data needed for parsing, and data needed to to be passed between thread |
| 36 // between parsing and compilation. These need to be initialized before the |
| 37 // compilation starts. |
| 38 UnicodeCache unicode_cache; |
| 39 SmartPointer<CompilationInfo> info; |
| 40 uint32_t hash_seed; |
| 41 bool allow_lazy; |
| 42 SmartPointer<Parser> parser; |
| 43 |
| 44 private: |
| 45 // Prevent copying. Not implemented. |
| 46 StreamedSource(const StreamedSource&); |
| 47 StreamedSource& operator=(const StreamedSource&); |
| 48 }; |
| 49 |
| 50 |
| 51 class BackgroundParsingTask : public ScriptCompiler::ScriptStreamingTask { |
| 52 public: |
| 53 BackgroundParsingTask(StreamedSource* source, |
| 54 ScriptCompiler::CompileOptions options, int stack_size, |
| 55 Isolate* isolate); |
| 56 |
| 57 virtual void Run(); |
| 58 |
| 59 private: |
| 60 StreamedSource* source_; // Not owned. |
| 61 ScriptCompiler::CompileOptions options_; |
| 62 int stack_size_; |
| 63 }; |
| 64 } |
| 65 } // namespace v8::internal |
| 66 |
| 67 #endif // V8_BACKGROUND_PARSING_TASK_H_ |
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