mirror of
https://github.com/monero-project/monero.git
synced 2024-12-28 02:49:23 -05:00
97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
// Copyright (c) 2020, The Monero Project
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
// of conditions and the following disclaimer in the documentation and/or other
|
|
// materials provided with the distribution.
|
|
//
|
|
// 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without specific
|
|
// prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#include "byte_stream.h"
|
|
|
|
#include <algorithm>
|
|
#include <limits>
|
|
#include <utility>
|
|
|
|
#include <iostream>
|
|
|
|
namespace
|
|
{
|
|
constexpr const std::size_t minimum_increase = 4096;
|
|
}
|
|
|
|
namespace epee
|
|
{
|
|
void byte_stream::overflow(const std::size_t requested)
|
|
{
|
|
// Recalculating `need` bytes removes at least one instruction from every
|
|
// inlined `put` call in header
|
|
|
|
assert(available() < requested);
|
|
const std::size_t need = requested - available();
|
|
|
|
const std::size_t len = size();
|
|
const std::size_t cap = capacity();
|
|
const std::size_t increase = std::max(std::max(need, cap), minimum_increase);
|
|
|
|
next_write_ = nullptr;
|
|
end_ = nullptr;
|
|
|
|
buffer_ = byte_buffer_increase(std::move(buffer_), cap, increase);
|
|
if (!buffer_)
|
|
throw std::bad_alloc{};
|
|
|
|
next_write_ = buffer_.get() + len;
|
|
end_ = buffer_.get() + cap + increase;
|
|
}
|
|
|
|
byte_stream::byte_stream(byte_stream&& rhs) noexcept
|
|
: buffer_(std::move(rhs.buffer_)),
|
|
next_write_(rhs.next_write_),
|
|
end_(rhs.end_)
|
|
{
|
|
rhs.next_write_ = nullptr;
|
|
rhs.end_ = nullptr;
|
|
}
|
|
|
|
byte_stream& byte_stream::operator=(byte_stream&& rhs) noexcept
|
|
{
|
|
if (this != std::addressof(rhs))
|
|
{
|
|
buffer_ = std::move(rhs.buffer_);
|
|
next_write_ = rhs.next_write_;
|
|
end_ = rhs.end_;
|
|
rhs.next_write_ = nullptr;
|
|
rhs.end_ = nullptr;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
byte_buffer byte_stream::take_buffer() noexcept
|
|
{
|
|
byte_buffer out{std::move(buffer_)};
|
|
next_write_ = nullptr;
|
|
end_ = nullptr;
|
|
return out;
|
|
}
|
|
}
|