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- // Copyright (c) 2013 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "net/spdy/spdy_read_queue.h"
- #include <algorithm>
- #include <utility>
- #include "base/check_op.h"
- #include "net/spdy/spdy_buffer.h"
- namespace net {
- SpdyReadQueue::SpdyReadQueue() = default;
- SpdyReadQueue::~SpdyReadQueue() {
- Clear();
- }
- bool SpdyReadQueue::IsEmpty() const {
- DCHECK_EQ(queue_.empty(), total_size_ == 0);
- return queue_.empty();
- }
- size_t SpdyReadQueue::GetTotalSize() const {
- return total_size_;
- }
- void SpdyReadQueue::Enqueue(std::unique_ptr<SpdyBuffer> buffer) {
- DCHECK_GT(buffer->GetRemainingSize(), 0u);
- total_size_ += buffer->GetRemainingSize();
- queue_.push_back(std::move(buffer));
- }
- size_t SpdyReadQueue::Dequeue(char* out, size_t len) {
- DCHECK_GT(len, 0u);
- size_t bytes_copied = 0;
- while (!queue_.empty() && bytes_copied < len) {
- SpdyBuffer* buffer = queue_.front().get();
- size_t bytes_to_copy =
- std::min(len - bytes_copied, buffer->GetRemainingSize());
- memcpy(out + bytes_copied, buffer->GetRemainingData(), bytes_to_copy);
- bytes_copied += bytes_to_copy;
- if (bytes_to_copy == buffer->GetRemainingSize())
- queue_.pop_front();
- else
- buffer->Consume(bytes_to_copy);
- }
- total_size_ -= bytes_copied;
- return bytes_copied;
- }
- void SpdyReadQueue::Clear() {
- queue_.clear();
- total_size_ = 0;
- }
- } // namespace net
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