Split net/spdy into core and chromium subdirectories.

net/spdy/spdy_buffer.cc

-// 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_buffer.h"
-
-#include <cstring>
-#include <utility>
-
-#include "base/callback.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "net/base/io_buffer.h"
-#include "net/spdy/platform/api/spdy_estimate_memory_usage.h"
-#include "net/spdy/spdy_protocol.h"
-
-namespace net {
-
-namespace {
-
-// Bound on largest frame any SPDY version has allowed.
-const size_t kMaxSpdyFrameSize = 0x00ffffff;
-
-// Makes a SpdySerializedFrame with |size| bytes of data copied from |data|.
-// |data| must be non-NULL and |size| must be positive.
-std::unique_ptr<SpdySerializedFrame> MakeSpdySerializedFrame(const char* data,
-                                                             size_t size) {
-  DCHECK(data);
-  CHECK_GT(size, 0u);
-  CHECK_LE(size, kMaxSpdyFrameSize);
-  std::unique_ptr<char[]> frame_data(new char[size]);
-  std::memcpy(frame_data.get(), data, size);
-  std::unique_ptr<SpdySerializedFrame> frame(new SpdySerializedFrame(
-      frame_data.release(), size, true /* owns_buffer */));
-  return frame;
-}
-
-}  // namespace
-
-// This class is an IOBuffer implementation that simply holds a
-// reference to a SharedFrame object and a fixed offset. Used by
-// SpdyBuffer::GetIOBufferForRemainingData().
-class SpdyBuffer::SharedFrameIOBuffer : public IOBuffer {
- public:
-  SharedFrameIOBuffer(const scoped_refptr<SharedFrame>& shared_frame,
-                      size_t offset)
-      : IOBuffer(shared_frame->data->data() + offset),
-        shared_frame_(shared_frame) {}
-
- private:
-  ~SharedFrameIOBuffer() override {
-    // Prevent ~IOBuffer() from trying to delete |data_|.
-    data_ = NULL;
-  }
-
-  const scoped_refptr<SharedFrame> shared_frame_;
-
-  DISALLOW_COPY_AND_ASSIGN(SharedFrameIOBuffer);
-};
-
-SpdyBuffer::SpdyBuffer(std::unique_ptr<SpdySerializedFrame> frame)
-    : shared_frame_(new SharedFrame()), offset_(0) {
-  shared_frame_->data = std::move(frame);
-}
-
-// The given data may not be strictly a SPDY frame; we (ab)use
-// |frame_| just as a container.
-SpdyBuffer::SpdyBuffer(const char* data, size_t size) :
-    shared_frame_(new SharedFrame()),
-    offset_(0) {
-  CHECK_GT(size, 0u);
-  CHECK_LE(size, kMaxSpdyFrameSize);
-  shared_frame_->data = MakeSpdySerializedFrame(data, size);
-}
-
-SpdyBuffer::~SpdyBuffer() {
-  if (GetRemainingSize() > 0)
-    ConsumeHelper(GetRemainingSize(), DISCARD);
-}
-
-const char* SpdyBuffer::GetRemainingData() const {
-  return shared_frame_->data->data() + offset_;
-}
-
-size_t SpdyBuffer::GetRemainingSize() const {
-  return shared_frame_->data->size() - offset_;
-}
-
-void SpdyBuffer::AddConsumeCallback(const ConsumeCallback& consume_callback) {
-  consume_callbacks_.push_back(consume_callback);
-}
-
-void SpdyBuffer::Consume(size_t consume_size) {
-  ConsumeHelper(consume_size, CONSUME);
-};
-
-IOBuffer* SpdyBuffer::GetIOBufferForRemainingData() {
-  return new SharedFrameIOBuffer(shared_frame_, offset_);
-}
-
-size_t SpdyBuffer::EstimateMemoryUsage() const {
-  // TODO(xunjieli): Estimate |consume_callbacks_|. https://crbug.com/669108.
-  return SpdyEstimateMemoryUsage(shared_frame_->data);
-}
-
-void SpdyBuffer::ConsumeHelper(size_t consume_size,
-                               ConsumeSource consume_source) {
-  DCHECK_GE(consume_size, 1u);
-  DCHECK_LE(consume_size, GetRemainingSize());
-  offset_ += consume_size;
-  for (std::vector<ConsumeCallback>::const_iterator it =
-           consume_callbacks_.begin(); it != consume_callbacks_.end(); ++it) {
-    it->Run(consume_size, consume_source);
-  }
-};
-
-}  // namespace net