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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ | 5 #ifndef NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ |
6 #define NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ | 6 #define NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ |
7 | 7 |
8 #include "net/base/net_export.h" | 8 #include "net/base/net_export.h" |
9 #include "net/quic/quic_protocol.h" | 9 #include "net/quic/quic_protocol.h" |
10 #include "net/spdy/write_blocked_list.h" | 10 #include "net/spdy/write_blocked_list.h" |
11 | 11 |
12 namespace net { | 12 namespace net { |
13 | 13 |
14 // Keeps tracks of the QUIC streams that have data to write, sorted by | 14 // Keeps tracks of the QUIC streams that have data to write, sorted by |
15 // priority. QUIC stream priority order is: | 15 // priority. QUIC stream priority order is: |
16 // Crypto stream > Headers stream > Data streams by requested priority. | 16 // Crypto stream > Headers stream > Data streams by requested priority. |
17 class NET_EXPORT_PRIVATE QuicWriteBlockedList { | 17 class NET_EXPORT_PRIVATE QuicWriteBlockedList { |
18 private: | 18 private: |
19 typedef WriteBlockedList<QuicStreamId> QuicWriteBlockedListBase; | 19 typedef WriteBlockedList<QuicStreamId> QuicWriteBlockedListBase; |
20 | 20 |
21 public: | 21 public: |
22 static const QuicPriority kHighestPriority; | 22 static const QuicPriority kHighestPriority; |
23 static const QuicPriority kLowestPriority; | 23 static const QuicPriority kLowestPriority; |
24 | 24 |
25 QuicWriteBlockedList(); | 25 QuicWriteBlockedList(); |
26 ~QuicWriteBlockedList(); | 26 ~QuicWriteBlockedList(); |
27 | 27 |
28 bool HasWriteBlockedStreams() const { | 28 bool HasWriteBlockedStreams() const { |
29 return crypto_stream_blocked_ || | 29 return crypto_stream_blocked_ || headers_stream_blocked_ || |
30 headers_stream_blocked_ || | 30 base_write_blocked_list_.HasWriteBlockedStreams(); |
31 base_write_blocked_list_.HasWriteBlockedStreams(); | |
32 } | 31 } |
33 | 32 |
34 size_t NumBlockedStreams() const { | 33 size_t NumBlockedStreams() const { |
35 size_t num_blocked = base_write_blocked_list_.NumBlockedStreams(); | 34 size_t num_blocked = base_write_blocked_list_.NumBlockedStreams(); |
36 if (crypto_stream_blocked_) { | 35 if (crypto_stream_blocked_) { |
37 ++num_blocked; | 36 ++num_blocked; |
38 } | 37 } |
39 if (headers_stream_blocked_) { | 38 if (headers_stream_blocked_) { |
40 ++num_blocked; | 39 ++num_blocked; |
41 } | 40 } |
(...skipping 18 matching lines...) Expand all Loading... |
60 void PushBack(QuicStreamId stream_id, QuicPriority priority) { | 59 void PushBack(QuicStreamId stream_id, QuicPriority priority) { |
61 if (stream_id == kCryptoStreamId) { | 60 if (stream_id == kCryptoStreamId) { |
62 DCHECK_EQ(kHighestPriority, priority); | 61 DCHECK_EQ(kHighestPriority, priority); |
63 // TODO(avd) Add DCHECK(!crypto_stream_blocked_) | 62 // TODO(avd) Add DCHECK(!crypto_stream_blocked_) |
64 crypto_stream_blocked_ = true; | 63 crypto_stream_blocked_ = true; |
65 } else if (stream_id == kHeadersStreamId) { | 64 } else if (stream_id == kHeadersStreamId) { |
66 DCHECK_EQ(kHighestPriority, priority); | 65 DCHECK_EQ(kHighestPriority, priority); |
67 // TODO(avd) Add DCHECK(!headers_stream_blocked_); | 66 // TODO(avd) Add DCHECK(!headers_stream_blocked_); |
68 headers_stream_blocked_ = true; | 67 headers_stream_blocked_ = true; |
69 } else { | 68 } else { |
70 base_write_blocked_list_.PushBack( | 69 base_write_blocked_list_.PushBack(stream_id, |
71 stream_id, static_cast<SpdyPriority>(priority)); | 70 static_cast<SpdyPriority>(priority)); |
72 } | 71 } |
73 } | 72 } |
74 | 73 |
75 private: | 74 private: |
76 QuicWriteBlockedListBase base_write_blocked_list_; | 75 QuicWriteBlockedListBase base_write_blocked_list_; |
77 bool crypto_stream_blocked_; | 76 bool crypto_stream_blocked_; |
78 bool headers_stream_blocked_; | 77 bool headers_stream_blocked_; |
79 | 78 |
80 DISALLOW_COPY_AND_ASSIGN(QuicWriteBlockedList); | 79 DISALLOW_COPY_AND_ASSIGN(QuicWriteBlockedList); |
81 }; | 80 }; |
82 | 81 |
83 } // namespace net | 82 } // namespace net |
84 | 83 |
85 | |
86 #endif // NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ | 84 #endif // NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ |
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