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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef ParsedChunkQueue_h | 5 #ifndef TokenizedChunkQueue_h |
| 6 #define ParsedChunkQueue_h | 6 #define TokenizedChunkQueue_h |
| 7 | 7 |
| 8 #include "core/html/parser/HTMLDocumentParser.h" | 8 #include "core/html/parser/HTMLDocumentParser.h" |
| 9 #include "wtf/Deque.h" | 9 #include "wtf/Deque.h" |
| 10 #include "wtf/PassRefPtr.h" | 10 #include "wtf/PassRefPtr.h" |
| 11 #include "wtf/ThreadSafeRefCounted.h" | 11 #include "wtf/ThreadSafeRefCounted.h" |
| 12 #include "wtf/ThreadingPrimitives.h" | 12 #include "wtf/ThreadingPrimitives.h" |
| 13 #include "wtf/Vector.h" | 13 #include "wtf/Vector.h" |
| 14 #include <memory> | 14 #include <memory> |
| 15 | 15 |
| 16 namespace blink { | 16 namespace blink { |
| 17 | 17 |
| 18 // ParsedChunkQueue is used to transfer parsed HTML token chunks | 18 // TokenizedChunkQueue is used to transfer parsed HTML token chunks |
| 19 // from BackgroundHTMLParser thread to Blink main thread without | 19 // from BackgroundHTMLParser thread to Blink main thread without |
| 20 // spamming task queue. | 20 // spamming task queue. |
| 21 // ParsedChunkQueue is accessed from both BackgroundHTMLParser | 21 // TokenizedChunkQueue is accessed from both BackgroundHTMLParser |
| 22 // thread (producer) and Blink main thread (consumer). | 22 // thread (producer) and Blink main thread (consumer). |
| 23 // Access to the backend queue vector is protected by a mutex. | 23 // Access to the backend queue vector is protected by a mutex. |
| 24 // If enqueue is done against empty queue, BackgroundHTMLParser | 24 // If enqueue is done against empty queue, BackgroundHTMLParser |
| 25 // thread kicks a consumer task on Blink main thread. | 25 // thread kicks a consumer task on Blink main thread. |
| 26 class ParsedChunkQueue : public ThreadSafeRefCounted<ParsedChunkQueue> { | 26 class TokenizedChunkQueue : public ThreadSafeRefCounted<TokenizedChunkQueue> { |
| 27 public: | 27 public: |
| 28 static PassRefPtr<ParsedChunkQueue> create() | 28 static PassRefPtr<TokenizedChunkQueue> create() |
| 29 { | 29 { |
| 30 return adoptRef(new ParsedChunkQueue); | 30 return adoptRef(new TokenizedChunkQueue); |
| 31 } | 31 } |
| 32 | 32 |
| 33 ~ParsedChunkQueue(); | 33 ~TokenizedChunkQueue(); |
| 34 | 34 |
| 35 bool enqueue(std::unique_ptr<HTMLDocumentParser::ParsedChunk>); | 35 bool enqueue(std::unique_ptr<HTMLDocumentParser::TokenizedChunk>); |
| 36 void clear(); | 36 void clear(); |
| 37 | 37 |
| 38 void takeAll(Vector<std::unique_ptr<HTMLDocumentParser::ParsedChunk>>&); | 38 void takeAll(Vector<std::unique_ptr<HTMLDocumentParser::TokenizedChunk>>&); |
| 39 size_t peakPendingChunkCount(); | 39 size_t peakPendingChunkCount(); |
| 40 size_t peakPendingTokenCount(); | 40 size_t peakPendingTokenCount(); |
| 41 | 41 |
| 42 private: | 42 private: |
| 43 ParsedChunkQueue(); | 43 TokenizedChunkQueue(); |
| 44 | 44 |
| 45 std::unique_ptr<Mutex> m_mutex; | 45 std::unique_ptr<Mutex> m_mutex; |
| 46 Vector<std::unique_ptr<HTMLDocumentParser::ParsedChunk>> m_pendingChunks; | 46 Vector<std::unique_ptr<HTMLDocumentParser::TokenizedChunk>> m_pendingChunks; |
| 47 size_t m_peakPendingChunkCount = 0; | 47 size_t m_peakPendingChunkCount = 0; |
| 48 size_t m_peakPendingTokenCount = 0; | 48 size_t m_peakPendingTokenCount = 0; |
| 49 size_t m_pendingTokenCount = 0; | 49 size_t m_pendingTokenCount = 0; |
| 50 }; | 50 }; |
| 51 | 51 |
| 52 } // namespace blink | 52 } // namespace blink |
| 53 | 53 |
| 54 #endif | 54 #endif |
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