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/**
* MIT License
*
* Copyright (c) 2017 Thibaut Goetghebuer-Planchon <tessil@gmx.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <tsl/sparse_map.h>
#include <boost/test/unit_test.hpp>
#include <cstddef>
#include <cstdlib>
#include <functional>
#include <limits>
#include <stdexcept>
#include <type_traits>
#include <utility>
#include "utils.h"
static std::size_t nb_custom_allocs = 0;
template <typename T>
class custom_allocator {
public:
using value_type = T;
using pointer = T*;
using const_pointer = const T*;
using reference = T&;
using const_reference = const T&;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
using propagate_on_container_move_assignment = std::true_type;
template <typename U>
struct rebind {
using other = custom_allocator<U>;
};
custom_allocator() = default;
custom_allocator(const custom_allocator&) = default;
template <typename U>
custom_allocator(const custom_allocator<U>&) {}
custom_allocator& operator=(const custom_allocator& other) = default;
pointer address(reference x) const noexcept { return &x; }
const_pointer address(const_reference x) const noexcept { return &x; }
pointer allocate(size_type n, const void* /*hint*/ = 0) {
nb_custom_allocs++;
pointer ptr = static_cast<pointer>(std::malloc(n * sizeof(T)));
if (ptr == nullptr) {
#if TSL_NO_EXCEPTIONS
std::abort();
#else
throw std::bad_alloc();
#endif
}
return ptr;
}
void deallocate(T* p, size_type /*n*/) { std::free(p); }
size_type max_size() const noexcept {
return std::numeric_limits<size_type>::max() / sizeof(value_type);
}
template <typename U, typename... Args>
void construct(U* p, Args&&... args) {
::new (static_cast<void*>(p)) U(std::forward<Args>(args)...);
}
template <typename U>
void destroy(U* p) {
p->~U();
}
};
template <class T, class U>
bool operator==(const custom_allocator<T>&, const custom_allocator<U>&) {
return true;
}
template <class T, class U>
bool operator!=(const custom_allocator<T>&, const custom_allocator<U>&) {
return false;
}
// TODO Avoid overloading new to check number of global new
// static std::size_t nb_global_new = 0;
// void* operator new(std::size_t sz) {
// nb_global_new++;
// return std::malloc(sz);
// }
//
// void operator delete(void* ptr) noexcept {
// std::free(ptr);
// }
BOOST_AUTO_TEST_SUITE(test_custom_allocator)
BOOST_AUTO_TEST_CASE(test_custom_allocator_1) {
// nb_global_new = 0;
nb_custom_allocs = 0;
tsl::sparse_map<int, int, std::hash<int>, std::equal_to<int>,
custom_allocator<std::pair<int, int>>>
map;
const int nb_elements = 1000;
for (int i = 0; i < nb_elements; i++) {
map.insert({i, i * 2});
}
BOOST_CHECK_NE(nb_custom_allocs, 0);
// BOOST_CHECK_EQUAL(nb_global_new, 0);
}
BOOST_AUTO_TEST_SUITE_END()
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