Git-Mirrors/monero
1
0
Fork 0
mirror of https://github.com/monero-project/monero.git synced 2025-08-13 06:15:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

Add byte_stream for zero-copy serialization, and add support in ZMQ-JSON.

Browse source
This commit is contained in:
Lee Clagett 2020-03-18 23:22:39 +00:00
parent 8185054db7
commit c26c93019a
14 changed files with 806 additions and 171 deletions
Download patch file Download diff file Expand all files Collapse all files

42
contrib/epee/src/byte_slice.cpp
View file

@ -1,4 +1,4 @@
// Copyright (c) 2019, The Monero Project
// Copyright (c) 2019-2020, The Monero Project
//
// All rights reserved.
//
@ -34,6 +34,7 @@
#include <utility>
#include "byte_slice.h"
#include "byte_stream.h"
namespace epee
{
@ -117,6 +118,12 @@ namespace epee
}
} // anonymous
void release_byte_buffer::operator()(std::uint8_t* buf) const noexcept
{
if (buf)
std::free(buf - sizeof(raw_byte_slice));
}
byte_slice::byte_slice(byte_slice_data* storage, span<const std::uint8_t> portion) noexcept
: storage_(storage), portion_(portion)
{
@ -163,6 +170,14 @@ namespace epee
: byte_slice(adapt_buffer{}, std::move(buffer))
{}
byte_slice::byte_slice(byte_stream&& stream) noexcept
: storage_(nullptr), portion_(stream.data(), stream.size())
{
std::uint8_t* const data = stream.take_buffer().release() - sizeof(raw_byte_slice);
new (data) raw_byte_slice{};
storage_.reset(reinterpret_cast<raw_byte_slice*>(data));
}
byte_slice::byte_slice(byte_slice&& source) noexcept
: storage_(std::move(source.storage_)), portion_(source.portion_)
{
@ -217,4 +232,29 @@ namespace epee
portion_ = nullptr;
return out;
}
byte_buffer byte_buffer_resize(byte_buffer buf, const std::size_t length) noexcept
{
if (std::numeric_limits<std::size_t>::max() - sizeof(raw_byte_slice) < length)
return nullptr;
std::uint8_t* data = buf.get();
if (data != nullptr)
data -= sizeof(raw_byte_slice);
data = static_cast<std::uint8_t*>(std::realloc(data, sizeof(raw_byte_slice) + length));
if (data == nullptr)
return nullptr;
buf.release();
buf.reset(data + sizeof(raw_byte_slice));
return buf;
}
byte_buffer byte_buffer_increase(byte_buffer buf, const std::size_t current, const std::size_t more)
{
if (std::numeric_limits<std::size_t>::max() - current < more)
throw std::range_error{"byte_buffer_increase size_t overflow"};
return byte_buffer_resize(std::move(buf), current + more);
}
} // epee