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Side by Side Diff: third_party/WebKit/Source/core/html/parser/ParsedChunkQueue.h

Issue 2181943002: Rename ParsedChunk to TokenizedChunk in core/html/parser (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 4 months ago
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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
3 // found in the LICENSE file.
4
5 #ifndef ParsedChunkQueue_h
6 #define ParsedChunkQueue_h
7
8 #include "core/html/parser/HTMLDocumentParser.h"
9 #include "wtf/Deque.h"
10 #include "wtf/PassRefPtr.h"
11 #include "wtf/ThreadSafeRefCounted.h"
12 #include "wtf/ThreadingPrimitives.h"
13 #include "wtf/Vector.h"
14 #include <memory>
15
16 namespace blink {
17
18 // ParsedChunkQueue is used to transfer parsed HTML token chunks
19 // from BackgroundHTMLParser thread to Blink main thread without
20 // spamming task queue.
21 // ParsedChunkQueue is accessed from both BackgroundHTMLParser
22 // thread (producer) and Blink main thread (consumer).
23 // Access to the backend queue vector is protected by a mutex.
24 // If enqueue is done against empty queue, BackgroundHTMLParser
25 // thread kicks a consumer task on Blink main thread.
26 class ParsedChunkQueue : public ThreadSafeRefCounted<ParsedChunkQueue> {
27 public:
28 static PassRefPtr<ParsedChunkQueue> create()
29 {
30 return adoptRef(new ParsedChunkQueue);
31 }
32
33 ~ParsedChunkQueue();
34
35 bool enqueue(std::unique_ptr<HTMLDocumentParser::ParsedChunk>);
36 void clear();
37
38 void takeAll(Vector<std::unique_ptr<HTMLDocumentParser::ParsedChunk>>&);
39 size_t peakPendingChunkCount();
40 size_t peakPendingTokenCount();
41
42 private:
43 ParsedChunkQueue();
44
45 std::unique_ptr<Mutex> m_mutex;
46 Vector<std::unique_ptr<HTMLDocumentParser::ParsedChunk>> m_pendingChunks;
47 size_t m_peakPendingChunkCount = 0;
48 size_t m_peakPendingTokenCount = 0;
49 size_t m_pendingTokenCount = 0;
50 };
51
52 } // namespace blink
53
54 #endif
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