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//
// Copyright (c) 2021 Dmitry Arkhipov (grisumbras@gmail.com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/json
//
#ifndef BOOST_JSON_CHECKING_RESOURCE_HPP
#define BOOST_JSON_CHECKING_RESOURCE_HPP
#include <boost/json/storage_ptr.hpp>
#include <map>
#include "test_suite.hpp"
namespace boost {
namespace json {
class checking_resource
: public memory_resource
{
storage_ptr upstream_;
std::map<void const*, std::pair<std::size_t, std::size_t>> allocs_;
public:
explicit checking_resource(storage_ptr upstream = {}) noexcept
: upstream_(std::move(upstream))
{}
private:
void* do_allocate(std::size_t size, std::size_t alignment) override
{
void* result = upstream_->allocate(size, alignment);
allocs_.emplace(result, std::make_pair(size, alignment));
return result;
}
void do_deallocate(void* ptr, std::size_t size, std::size_t alignment)
override
{
auto const it = allocs_.find(ptr);
if( BOOST_TEST(it != allocs_.end()) )
{
BOOST_TEST(size == it->second.first);
BOOST_TEST(alignment == it->second.second);
allocs_.erase(it);
}
return upstream_->deallocate(ptr, size, alignment);
}
bool do_is_equal(memory_resource const& other) const noexcept
override
{
return this == &other;
}
};
} // namespace json
} // namespace boost
#endif // BOOST_JSON_CHECKING_RESOURCE_HPP
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