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| 1 // Copyright (c) 2013 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 #include "net/spdy/spdy_read_queue.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/stl_util.h" | |
| 9 #include "net/spdy/spdy_buffer.h" | |
| 10 | |
| 11 namespace net { | |
| 12 | |
| 13 SpdyReadQueue::SpdyReadQueue() : total_size_(0) {} | |
| 14 | |
| 15 SpdyReadQueue::~SpdyReadQueue() { | |
| 16 Clear(); | |
| 17 } | |
| 18 | |
| 19 bool SpdyReadQueue::IsEmpty() const { | |
| 20 DCHECK_EQ(queue_.empty(), total_size_ == 0); | |
| 21 return queue_.empty(); | |
| 22 } | |
| 23 | |
| 24 size_t SpdyReadQueue::GetTotalSize() const { | |
| 25 return total_size_; | |
| 26 } | |
| 27 | |
| 28 void SpdyReadQueue::Enqueue(scoped_ptr<SpdyBuffer> buffer) { | |
| 29 DCHECK_GT(buffer->GetRemainingSize(), 0u); | |
| 30 total_size_ += buffer->GetRemainingSize(); | |
| 31 queue_.push_back(buffer.release()); | |
| 32 } | |
| 33 | |
| 34 size_t SpdyReadQueue::Dequeue(char* out, size_t len) { | |
| 35 DCHECK_GT(len, 0u); | |
| 36 size_t bytes_copied = 0; | |
| 37 while (!queue_.empty() && bytes_copied < len) { | |
| 38 SpdyBuffer* buffer = queue_.front(); | |
| 39 size_t bytes_to_copy = | |
| 40 std::min(len - bytes_copied, buffer->GetRemainingSize()); | |
| 41 memcpy(out + bytes_copied, buffer->GetRemainingData(), bytes_to_copy); | |
| 42 bytes_copied += bytes_to_copy; | |
| 43 if (bytes_to_copy == buffer->GetRemainingSize()) { | |
| 44 delete queue_.front(); | |
| 45 queue_.pop_front(); | |
| 46 } else { | |
| 47 buffer->Consume(bytes_to_copy); | |
| 48 } | |
| 49 } | |
| 50 total_size_ -= bytes_copied; | |
| 51 return bytes_copied; | |
| 52 } | |
| 53 | |
| 54 void SpdyReadQueue::Clear() { | |
| 55 STLDeleteElements(&queue_); | |
| 56 } | |
| 57 | |
| 58 } // namespace net | |
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