io_buffer_mock.cpp

Go to the documentation of this file.

 
#include <cstdlib>
#include <cstring>
#include <span>
#include <utility>
 
#include "io_buffer.hpp"
 
IoBuffer::IoBuffer(size_t size, size_t /*alignment*/)
    : data_{static_cast<uint8_t*>(malloc(size))}, size_{size} {
  if (data_ != nullptr) {
    memset(data_, 0, size);
  }
}
 
IoBuffer::~IoBuffer() {
  free(data_);
  data_ = nullptr;
  size_ = 0;
}
 
IoBuffer::IoBuffer(IoBuffer&& other)
    : data_{std::exchange(other.data_, nullptr)},
      size_{std::exchange(other.size_, 0)} {}
 
auto IoBuffer::operator=(IoBuffer&& other) noexcept -> IoBuffer& {
  if (this != &other) {
    free(data_);
    data_ = std::exchange(other.data_, nullptr);
    size_ = std::exchange(other.size_, 0);
  }
  return *this;
}
 
auto IoBuffer::GetBuffer() const -> std::span<const uint8_t> {
  return {data_, size_};
}
 
auto IoBuffer::GetBuffer() -> std::span<uint8_t> { return {data_, size_}; }
 
auto IoBuffer::IsValid() const -> bool { return data_ != nullptr; }
 
auto IoBuffer::ToDmaRegion(VirtToPhysFunc v2p) const -> DmaRegion {
  return DmaRegion{
      .virt = data_,
      .phys = v2p(reinterpret_cast<uintptr_t>(data_)),
      .size = size_,
  };
}