| Index: net/quic/quic_data_writer.cc
|
| diff --git a/net/quic/quic_data_writer.cc b/net/quic/quic_data_writer.cc
|
| deleted file mode 100644
|
| index 1c6e47fe6aa66d2ba7bdb18c535b4274e97c14bc..0000000000000000000000000000000000000000
|
| --- a/net/quic/quic_data_writer.cc
|
| +++ /dev/null
|
| @@ -1,195 +0,0 @@
|
| -// Copyright (c) 2012 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/quic/quic_data_writer.h"
|
| -
|
| -#include <algorithm>
|
| -#include <limits>
|
| -#include <string>
|
| -
|
| -#include "base/basictypes.h"
|
| -#include "base/logging.h"
|
| -
|
| -using base::StringPiece;
|
| -using std::numeric_limits;
|
| -
|
| -namespace net {
|
| -
|
| -QuicDataWriter::QuicDataWriter(size_t size, char* buffer)
|
| - : buffer_(buffer), capacity_(size), length_(0) {
|
| -}
|
| -
|
| -QuicDataWriter::~QuicDataWriter() {
|
| -}
|
| -
|
| -char* QuicDataWriter::data() {
|
| - return buffer_;
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt8(uint8 value) {
|
| - return WriteBytes(&value, sizeof(value));
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt16(uint16 value) {
|
| - return WriteBytes(&value, sizeof(value));
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt32(uint32 value) {
|
| - return WriteBytes(&value, sizeof(value));
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt48(uint64 value) {
|
| - uint16 hi = static_cast<uint16>(value >> 32);
|
| - uint32 lo = static_cast<uint32>(value);
|
| - return WriteUInt32(lo) && WriteUInt16(hi);
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt64(uint64 value) {
|
| - return WriteBytes(&value, sizeof(value));
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUFloat16(uint64 value) {
|
| - uint16 result;
|
| - if (value < (GG_UINT64_C(1) << kUFloat16MantissaEffectiveBits)) {
|
| - // Fast path: either the value is denormalized, or has exponent zero.
|
| - // Both cases are represented by the value itself.
|
| - result = static_cast<uint16>(value);
|
| - } else if (value >= kUFloat16MaxValue) {
|
| - // Value is out of range; clamp it to the maximum representable.
|
| - result = numeric_limits<uint16>::max();
|
| - } else {
|
| - // The highest bit is between position 13 and 42 (zero-based), which
|
| - // corresponds to exponent 1-30. In the output, mantissa is from 0 to 10,
|
| - // hidden bit is 11 and exponent is 11 to 15. Shift the highest bit to 11
|
| - // and count the shifts.
|
| - uint16 exponent = 0;
|
| - for (uint16 offset = 16; offset > 0; offset /= 2) {
|
| - // Right-shift the value until the highest bit is in position 11.
|
| - // For offset of 16, 8, 4, 2 and 1 (binary search over 1-30),
|
| - // shift if the bit is at or above 11 + offset.
|
| - if (value >= (GG_UINT64_C(1) << (kUFloat16MantissaBits + offset))) {
|
| - exponent += offset;
|
| - value >>= offset;
|
| - }
|
| - }
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| -
|
| - DCHECK_GE(exponent, 1);
|
| - DCHECK_LE(exponent, kUFloat16MaxExponent);
|
| - DCHECK_GE(value, GG_UINT64_C(1) << kUFloat16MantissaBits);
|
| - DCHECK_LT(value, GG_UINT64_C(1) << kUFloat16MantissaEffectiveBits);
|
| -
|
| - // Hidden bit (position 11) is set. We should remove it and increment the
|
| - // exponent. Equivalently, we just add it to the exponent.
|
| - // This hides the bit.
|
| - result = static_cast<uint16>(value + (exponent << kUFloat16MantissaBits));
|
| - }
|
| -
|
| - return WriteBytes(&result, sizeof(result));
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteStringPiece16(StringPiece val) {
|
| - if (val.size() > numeric_limits<uint16>::max()) {
|
| - return false;
|
| - }
|
| - if (!WriteUInt16(static_cast<uint16>(val.size()))) {
|
| - return false;
|
| - }
|
| - return WriteBytes(val.data(), val.size());
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteIOVector(const IOVector& data) {
|
| - char *dest = BeginWrite(data.TotalBufferSize());
|
| - if (!dest) {
|
| - return false;
|
| - }
|
| - for (size_t i = 0; i < data.Size(); ++i) {
|
| - WriteBytes(data.iovec()[i].iov_base, data.iovec()[i].iov_len);
|
| - }
|
| -
|
| - return true;
|
| -}
|
| -
|
| -char* QuicDataWriter::BeginWrite(size_t length) {
|
| - if (length_ > capacity_) {
|
| - return nullptr;
|
| - }
|
| -
|
| - if (capacity_ - length_ < length) {
|
| - return nullptr;
|
| - }
|
| -
|
| -#ifdef ARCH_CPU_64_BITS
|
| - DCHECK_LE(length, std::numeric_limits<uint32>::max());
|
| -#endif
|
| -
|
| - return buffer_ + length_;
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteBytes(const void* data, size_t data_len) {
|
| - char* dest = BeginWrite(data_len);
|
| - if (!dest) {
|
| - return false;
|
| - }
|
| -
|
| - memcpy(dest, data, data_len);
|
| -
|
| - length_ += data_len;
|
| - return true;
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteRepeatedByte(uint8 byte, size_t count) {
|
| - char* dest = BeginWrite(count);
|
| - if (!dest) {
|
| - return false;
|
| - }
|
| -
|
| - memset(dest, byte, count);
|
| -
|
| - length_ += count;
|
| - return true;
|
| -}
|
| -
|
| -void QuicDataWriter::WritePadding() {
|
| - DCHECK_LE(length_, capacity_);
|
| - if (length_ > capacity_) {
|
| - return;
|
| - }
|
| - memset(buffer_ + length_, 0x00, capacity_ - length_);
|
| - length_ = capacity_;
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt8ToOffset(uint8 value, size_t offset) {
|
| - if (offset >= capacity_) {
|
| - LOG(DFATAL) << "offset: " << offset << " >= capacity: " << capacity_;
|
| - return false;
|
| - }
|
| - size_t latched_length = length_;
|
| - length_ = offset;
|
| - bool success = WriteUInt8(value);
|
| - DCHECK_LE(length_, latched_length);
|
| - length_ = latched_length;
|
| - return success;
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt32ToOffset(uint32 value, size_t offset) {
|
| - DCHECK_LT(offset, capacity_);
|
| - size_t latched_length = length_;
|
| - length_ = offset;
|
| - bool success = WriteUInt32(value);
|
| - DCHECK_LE(length_, latched_length);
|
| - length_ = latched_length;
|
| - return success;
|
| -}
|
| -
|
| -bool QuicDataWriter::WriteUInt48ToOffset(uint64 value, size_t offset) {
|
| - DCHECK_LT(offset, capacity_);
|
| - size_t latched_length = length_;
|
| - length_ = offset;
|
| - bool success = WriteUInt48(value);
|
| - DCHECK_LE(length_, latched_length);
|
| - length_ = latched_length;
|
| - return success;
|
| -}
|
| -
|
| -} // namespace net
|
|
|