72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
/* Copyright 2019-2020 Canaan Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
#pragma once
|
|
#include <iostream>
|
|
#include <xtl/xspan.hpp>
|
|
|
|
namespace nncase
|
|
{
|
|
namespace runtime
|
|
{
|
|
class binary_writer
|
|
{
|
|
public:
|
|
binary_writer(std::ostream &stream)
|
|
: stream_(stream)
|
|
{
|
|
}
|
|
|
|
template <class T>
|
|
void write(T &&value)
|
|
{
|
|
stream_.write(reinterpret_cast<const char *>(&value), sizeof(value));
|
|
}
|
|
|
|
template <class T>
|
|
void write_array(xtl::span<const T> value)
|
|
{
|
|
stream_.write(reinterpret_cast<const char *>(value.data()), value.size_bytes());
|
|
}
|
|
|
|
std::streampos position() const
|
|
{
|
|
return stream_.tellp();
|
|
}
|
|
|
|
void position(std::streampos pos)
|
|
{
|
|
stream_.seekp(pos);
|
|
}
|
|
|
|
std::streamoff align_position(size_t alignment)
|
|
{
|
|
auto pos = position();
|
|
auto rem = pos % alignment;
|
|
if (rem != 0)
|
|
{
|
|
auto off = std::streamoff(alignment - rem);
|
|
position(pos + off);
|
|
return off;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
private:
|
|
std::ostream &stream_;
|
|
};
|
|
}
|
|
}
|