| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #ifndef CLASS_TEST_TYPE_HPP_ |
| #define CLASS_TEST_TYPE_HPP_ |
| |
| #include <iostream> |
| |
| namespace datasketches { |
| |
| template<typename A> |
| class test_type_alloc { |
| static const bool DEBUG = false; |
| public: |
| // no default constructor should be required |
| test_type_alloc(int value): value_ptr(A().allocate(1)) { |
| if (DEBUG) std::cerr << "test_type constructor" << std::endl; |
| *value_ptr = value; |
| } |
| ~test_type_alloc() { |
| if (DEBUG) std::cerr << "test_type destructor" << std::endl; |
| if (value_ptr != nullptr) A().deallocate(value_ptr, 1); |
| } |
| test_type_alloc(const test_type_alloc& other): value_ptr(A().allocate(1)) { |
| if (DEBUG) std::cerr << "test_type copy constructor" << std::endl; |
| *value_ptr = *other.value_ptr; |
| } |
| // noexcept is important here so that, for instance, std::vector could move this type |
| test_type_alloc(test_type_alloc&& other) noexcept : value_ptr(nullptr) { |
| if (DEBUG) std::cerr << "test_type move constructor" << std::endl; |
| if (DEBUG && other.value_ptr == nullptr) std::cerr << "moving null" << std::endl; |
| std::swap(value_ptr, other.value_ptr); |
| } |
| test_type_alloc& operator=(const test_type_alloc& other) { |
| if (DEBUG) std::cerr << "test_type copy assignment" << std::endl; |
| if (DEBUG && value_ptr == nullptr) std::cerr << "nullptr" << std::endl; |
| *value_ptr = *other.value_ptr; |
| return *this; |
| } |
| test_type_alloc& operator=(test_type_alloc&& other) { |
| if (DEBUG) std::cerr << "test_type move assignment" << std::endl; |
| if (DEBUG && other.value_ptr == nullptr) std::cerr << "moving null" << std::endl; |
| std::swap(value_ptr, other.value_ptr); |
| return *this; |
| } |
| int get_value() const { |
| if (value_ptr == nullptr) std::cerr << "null" << std::endl; |
| return *value_ptr; |
| } |
| private: |
| int* value_ptr; |
| }; |
| |
| using test_type = test_type_alloc<std::allocator<int>>; |
| |
| struct test_type_hash { |
| std::size_t operator()(const test_type& a) const { |
| return std::hash<int>()(a.get_value()); |
| } |
| }; |
| |
| struct test_type_equal { |
| bool operator()(const test_type& a1, const test_type& a2) const { |
| return a1.get_value() == a2.get_value(); |
| } |
| }; |
| |
| struct test_type_less { |
| bool operator()(const test_type& a1, const test_type& a2) const { |
| return a1.get_value() < a2.get_value(); |
| } |
| }; |
| |
| struct test_type_serde { |
| void serialize(std::ostream& os, const test_type* items, unsigned num) const { |
| for (unsigned i = 0; i < num; i++) { |
| const int value = items[i].get_value(); |
| os.write((char*)&value, sizeof(value)); |
| } |
| } |
| void deserialize(std::istream& is, test_type* items, unsigned num) const { |
| for (unsigned i = 0; i < num; i++) { |
| int value; |
| is.read((char*)&value, sizeof(value)); |
| new (&items[i]) test_type(value); |
| } |
| } |
| size_t size_of_item(const test_type&) const { |
| return sizeof(int); |
| } |
| size_t serialize(void* ptr, size_t capacity, const test_type* items, unsigned num) const { |
| const size_t bytes_written = sizeof(int) * num; |
| check_memory_size(bytes_written, capacity); |
| for (unsigned i = 0; i < num; ++i) { |
| const int value = items[i].get_value(); |
| memcpy(ptr, &value, sizeof(int)); |
| ptr = static_cast<char*>(ptr) + sizeof(int); |
| } |
| return bytes_written; |
| } |
| size_t deserialize(const void* ptr, size_t capacity, test_type* items, unsigned num) const { |
| const size_t bytes_read = sizeof(int) * num; |
| check_memory_size(bytes_read, capacity); |
| for (unsigned i = 0; i < num; ++i) { |
| int value; |
| memcpy(&value, ptr, sizeof(int)); |
| new (&items[i]) test_type(value); |
| ptr = static_cast<const char*>(ptr) + sizeof(int); |
| } |
| return bytes_read; |
| } |
| }; |
| |
| std::ostream& operator<<(std::ostream& os, const test_type& a) { |
| os << a.get_value(); |
| return os; |
| } |
| |
| } /* namespace datasketches */ |
| |
| #endif |