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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 <stddef.h> |
| 9 #include <stdint.h> |
| 10 |
| 8 #include <set> | 11 #include <set> |
| 9 | 12 |
| 13 #include "base/macros.h" |
| 10 #include "net/base/net_export.h" | 14 #include "net/base/net_export.h" |
| 11 #include "net/quic/quic_flags.h" | 15 #include "net/quic/quic_flags.h" |
| 12 #include "net/quic/quic_protocol.h" | 16 #include "net/quic/quic_protocol.h" |
| 13 #include "net/spdy/priority_write_scheduler.h" | 17 #include "net/spdy/priority_write_scheduler.h" |
| 14 #include "net/spdy/write_blocked_list.h" | 18 #include "net/spdy/write_blocked_list.h" |
| 15 | 19 |
| 16 namespace net { | 20 namespace net { |
| 17 | 21 |
| 18 // Keeps tracks of the QUIC streams that have data to write, sorted by | 22 // Keeps tracks of the QUIC streams that have data to write, sorted by |
| 19 // priority. QUIC stream priority order is: | 23 // priority. QUIC stream priority order is: |
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| 113 if (use_new_blocked_list_) { | 117 if (use_new_blocked_list_) { |
| 114 priority_write_scheduler_.UpdateStreamPriority(stream_id, new_priority); | 118 priority_write_scheduler_.UpdateStreamPriority(stream_id, new_priority); |
| 115 } | 119 } |
| 116 } | 120 } |
| 117 | 121 |
| 118 void UpdateBytesForStream(QuicStreamId stream_id, size_t bytes) { | 122 void UpdateBytesForStream(QuicStreamId stream_id, size_t bytes) { |
| 119 if (batch_write_stream_id_[last_priority_popped_] == stream_id) { | 123 if (batch_write_stream_id_[last_priority_popped_] == stream_id) { |
| 120 // If this was the last data stream popped by PopFront, update the | 124 // If this was the last data stream popped by PopFront, update the |
| 121 // bytes remaining in its batch write. | 125 // bytes remaining in its batch write. |
| 122 bytes_left_for_batch_write_[last_priority_popped_] -= | 126 bytes_left_for_batch_write_[last_priority_popped_] -= |
| 123 static_cast<int32>(bytes); | 127 static_cast<int32_t>(bytes); |
| 124 } else { | 128 } else { |
| 125 // If a batch write stream was set, it should only be preempted by the | 129 // If a batch write stream was set, it should only be preempted by the |
| 126 // crypto or headers streams. Any higher priority data stream would | 130 // crypto or headers streams. Any higher priority data stream would |
| 127 // *become* the new batch write stream. | 131 // *become* the new batch write stream. |
| 128 if (FLAGS_quic_respect_send_alarm2 && FLAGS_quic_batch_writes) { | 132 if (FLAGS_quic_respect_send_alarm2 && FLAGS_quic_batch_writes) { |
| 129 DCHECK(stream_id == kCryptoStreamId || stream_id == kHeadersStreamId || | 133 DCHECK(stream_id == kCryptoStreamId || stream_id == kHeadersStreamId || |
| 130 batch_write_stream_id_[last_priority_popped_] == 0 || | 134 batch_write_stream_id_[last_priority_popped_] == 0 || |
| 131 bytes == 0); | 135 bytes == 0); |
| 132 } | 136 } |
| 133 } | 137 } |
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| 178 bool use_new_blocked_list_ = FLAGS_quic_new_blocked_list; | 182 bool use_new_blocked_list_ = FLAGS_quic_new_blocked_list; |
| 179 | 183 |
| 180 // If performing batch writes, this will be the stream ID of the stream doing | 184 // If performing batch writes, this will be the stream ID of the stream doing |
| 181 // batch writes for this priority level. We will allow this stream to write | 185 // batch writes for this priority level. We will allow this stream to write |
| 182 // until it has written kBatchWriteSize bytes, it has no more data to write, | 186 // until it has written kBatchWriteSize bytes, it has no more data to write, |
| 183 // or a higher priority stream preempts. | 187 // or a higher priority stream preempts. |
| 184 QuicStreamId batch_write_stream_id_[kV3LowestPriority + 1]; | 188 QuicStreamId batch_write_stream_id_[kV3LowestPriority + 1]; |
| 185 // Set to kBatchWriteSize when we set a new batch_write_stream_id_ for a given | 189 // Set to kBatchWriteSize when we set a new batch_write_stream_id_ for a given |
| 186 // priority. This is decremented with each write the stream does until it is | 190 // priority. This is decremented with each write the stream does until it is |
| 187 // done with its batch write. | 191 // done with its batch write. |
| 188 int32 bytes_left_for_batch_write_[kV3LowestPriority + 1]; | 192 int32_t bytes_left_for_batch_write_[kV3LowestPriority + 1]; |
| 189 // Tracks the last priority popped for UpdateBytesForStream. | 193 // Tracks the last priority popped for UpdateBytesForStream. |
| 190 SpdyPriority last_priority_popped_; | 194 SpdyPriority last_priority_popped_; |
| 191 | 195 |
| 192 bool crypto_stream_blocked_; | 196 bool crypto_stream_blocked_; |
| 193 bool headers_stream_blocked_; | 197 bool headers_stream_blocked_; |
| 194 | 198 |
| 195 DISALLOW_COPY_AND_ASSIGN(QuicWriteBlockedList); | 199 DISALLOW_COPY_AND_ASSIGN(QuicWriteBlockedList); |
| 196 }; | 200 }; |
| 197 | 201 |
| 198 } // namespace net | 202 } // namespace net |
| 199 | 203 |
| 200 #endif // NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ | 204 #endif // NET_QUIC_QUIC_WRITE_BLOCKED_LIST_H_ |
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