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68 lines
2.1 KiB
68 lines
2.1 KiB
11 years ago
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// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_BACKGROUND_PARSING_TASK_H_
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#define V8_BACKGROUND_PARSING_TASK_H_
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#include "src/base/platform/platform.h"
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#include "src/base/platform/semaphore.h"
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#include "src/compiler.h"
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#include "src/parser.h"
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#include "src/smart-pointers.h"
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namespace v8 {
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namespace internal {
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class Parser;
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// Internal representation of v8::ScriptCompiler::StreamedSource. Contains all
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// data which needs to be transmitted between threads for background parsing,
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// finalizing it on the main thread, and compiling on the main thread.
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struct StreamedSource {
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StreamedSource(ScriptCompiler::ExternalSourceStream* source_stream,
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ScriptCompiler::StreamedSource::Encoding encoding)
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: source_stream(source_stream),
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encoding(encoding),
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hash_seed(0),
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allow_lazy(false) {}
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// Internal implementation of v8::ScriptCompiler::StreamedSource.
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SmartPointer<ScriptCompiler::ExternalSourceStream> source_stream;
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ScriptCompiler::StreamedSource::Encoding encoding;
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SmartPointer<ScriptCompiler::CachedData> cached_data;
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// Data needed for parsing, and data needed to to be passed between thread
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// between parsing and compilation. These need to be initialized before the
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// compilation starts.
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UnicodeCache unicode_cache;
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SmartPointer<CompilationInfo> info;
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uint32_t hash_seed;
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bool allow_lazy;
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SmartPointer<Parser> parser;
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private:
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// Prevent copying. Not implemented.
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StreamedSource(const StreamedSource&);
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StreamedSource& operator=(const StreamedSource&);
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};
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class BackgroundParsingTask : public ScriptCompiler::ScriptStreamingTask {
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public:
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BackgroundParsingTask(StreamedSource* source,
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ScriptCompiler::CompileOptions options, int stack_size,
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Isolate* isolate);
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virtual void Run();
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private:
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StreamedSource* source_; // Not owned.
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ScriptCompiler::CompileOptions options_;
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int stack_size_;
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};
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}
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} // namespace v8::internal
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#endif // V8_BACKGROUND_PARSING_TASK_H_
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