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// Copyright (C) 2015-2025 Jonathan Müller and foonathan/memory contributors
// SPDX-License-Identifier: Zlib
#include <foonathan/memory/memory_pool_collection.hpp>
#include <algorithm>
#include <doctest/doctest.h>
#include <random>
#include <vector>
#include <foonathan/memory/allocator_storage.hpp>
#include "test_allocator.hpp"
using namespace foonathan::memory;
using namespace detail;
TEST_CASE("memory_pool_collection")
{
using pools =
memory_pool_collection<node_pool, identity_buckets, allocator_reference<test_allocator>>;
test_allocator alloc;
{
const auto max_size = 16u;
pools pool(max_size, 4000, alloc);
REQUIRE(pool.max_node_size() == max_size);
REQUIRE(pool.capacity_left() <= 4000u);
REQUIRE(pool.next_capacity() >= 4000u);
REQUIRE(alloc.no_allocated() == 1u);
for (auto i = 0u; i != max_size; ++i)
REQUIRE(pool.pool_capacity_left(i) == 0u);
SUBCASE("normal alloc/dealloc")
{
std::vector<void*> a, b;
for (auto i = 0u; i != 5u; ++i)
{
a.push_back(pool.allocate_node(1));
b.push_back(pool.try_allocate_node(5));
REQUIRE(b.back());
}
REQUIRE(alloc.no_allocated() == 1u);
REQUIRE(pool.capacity_left() <= 4000u);
std::shuffle(a.begin(), a.end(), std::mt19937{});
std::shuffle(b.begin(), b.end(), std::mt19937{});
for (auto ptr : a)
REQUIRE(pool.try_deallocate_node(ptr, 1));
for (auto ptr : b)
pool.deallocate_node(ptr, 5);
}
SUBCASE("single array alloc")
{
auto memory = pool.allocate_array(4, 4);
pool.deallocate_array(memory, 4, 4);
}
SUBCASE("array alloc/dealloc")
{
std::vector<void*> a, b;
for (auto i = 0u; i != 5u; ++i)
{
a.push_back(pool.allocate_array(4, 4));
b.push_back(pool.try_allocate_array(5, 5));
REQUIRE(b.back());
}
REQUIRE(alloc.no_allocated() == 1u);
REQUIRE(pool.capacity_left() <= 4000u);
std::shuffle(a.begin(), a.end(), std::mt19937{});
std::shuffle(b.begin(), b.end(), std::mt19937{});
for (auto ptr : a)
REQUIRE(pool.try_deallocate_array(ptr, 4, 4));
for (auto ptr : b)
pool.deallocate_array(ptr, 5, 5);
}
SUBCASE("multiple block alloc/dealloc")
{
std::vector<void*> a, b;
for (auto i = 0u; i != 1000u; ++i)
{
a.push_back(pool.allocate_node(1));
b.push_back(pool.allocate_node(5));
}
REQUIRE(alloc.no_allocated() > 1u);
std::shuffle(a.begin(), a.end(), std::mt19937{});
std::shuffle(b.begin(), b.end(), std::mt19937{});
for (auto ptr : a)
pool.deallocate_node(ptr, 1);
for (auto ptr : b)
pool.deallocate_node(ptr, 5);
}
}
REQUIRE(alloc.no_allocated() == 0u);
}
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