实验库头文件 <experimental/memory_resource>

 

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标准库头文件

语言支持 <cfloat> <climits> <compare> (C++20) <contracts> (C++26) <coroutine> (C++20) <csetjmp> <csignal> <cstdarg> <cstddef> <cstdint> (C++11) <cstdlib> <exception> <initializer_list> (C++11)    <limits> <new> <source_location> (C++20) <stdfloat> (C++23) <typeinfo> <version> (C++20) 概念 <concepts> (C++20) 诊断 <cassert> <cerrno> <debugging> (C++26) <stacktrace> (C++23) <stdexcept> <system_error> (C++11) 内存管理 <memory> <memory_resource> (C++17) <scoped_allocator> (C++11) 元编程 <type_traits> (C++11) <ratio> (C++11)

通用工具 <any> (C++17) <bitset> <bit> (C++20) <charconv> (C++17) <expected> (C++23) <format> (C++20) <functional> <optional> (C++17) <tuple> (C++11) <typeindex> (C++11) <utility> <variant> (C++17) 容器 <array> (C++11) <deque> <flat_map> (C++23) <flat_set> (C++23) <forward_list> (C++11) <hive> (C++26) <inplace_vector> (C++26)    <list> <map> <mdspan> (C++23) <queue> <set> <span> (C++20) <stack> <unordered_map> (C++11) <unordered_set> (C++11) <vector> 迭代器 <iterator> 范围 <generator> (C++23) <ranges> (C++20)

算法 <algorithm> <numeric> 字符串 <cctype> <cstring> <cuchar> (C++11) <cwchar> <cwctype> <string_view> (C++17) <string> 文本处理 <clocale> <codecvt> (C++11/17/26*) <locale> <regex> (C++11) <text_encoding> (C++26)    数值 <cfenv> (C++11) <cmath> <complex> <linalg> (C++26) <numbers> (C++20) <random> (C++11) <simd> (C++26) <valarray> 时间 <chrono> (C++11) <ctime> C 兼容性 <ccomplex> (C++11/17/20*) <ciso646> (直到 C++20) <cstdalign> (C++11/17/20*) <cstdbool> (C++11/17/20*) <ctgmath> (C++11/17/20*)

输入/输出 <cinttypes> (C++11) <cstdio> <filesystem> (C++17) <fstream> <iomanip> <iosfwd> <iostream> <ios> <istream> <ostream> <print> (C++23) <spanstream> (C++23) <sstream> <streambuf> <strstream> (C++98/26*) <syncstream> (C++20) 并发支持 <atomic> (C++11) <barrier> (C++20) <condition_variable> (C++11) <future> (C++11) <hazard_pointer> (C++26) <latch> (C++20) <mutex> (C++11) <rcu> (C++26) <semaphore> (C++20) <shared_mutex> (C++14) <stdatomic.h> (C++23) <stop_token> (C++20) <thread> (C++11) 执行支持 <execution> (C++17)

 

实验库头文件

执行 P2300
<experimental/execution>
文件系统 TS
<experimental/filesystem>
并行 TS (v1, v2)
experimental/algorithm experimental/execution_policy experimental/exception_list	experimental/numeric <experimental/simd> experimental/task_block
库基础 TS (v1, v2, v3)
experimental/algorithm <experimental/any> experimental/array experimental/chrono experimental/deque experimental/forward_list <experimental/functional> experimental/future experimental/iterator experimental/list experimental/map experimental/memory <experimental/memory_resource> experimental/numeric <experimental/optional> experimental/propagate_const	experimental/random experimental/ratio experimental/regex experimental/scope experimental/set experimental/source_location experimental/string <experimental/string_view> experimental/system_error experimental/tuple experimental/type_traits experimental/unordered_map experimental/unordered_set experimental/utility experimental/vector
并发 TS
experimental/atomic experimental/barrier	experimental/future experimental/latch
范围 TS
<experimental/ranges/algorithm> <experimental/ranges/concepts> <experimental/ranges/functional>         <experimental/ranges/iterator>	<experimental/ranges/random> <experimental/ranges/tuple> <experimental/ranges/type_traits> <experimental/ranges/utility>
协程 TS
experimental/coroutine
网络 TS
experimental/buffer experimental/executor experimental/internet experimental/io_context	<experimental/net> experimental/netfwd experimental/socket experimental/timer
反射 TS
<experimental/reflect>

 

此头文件是库基础 TS (v1, v2, v3) 的一部分。

类

定义于命名空间 std::experimental::pmr
memory_resource	封装内存资源的类的抽象接口 (类)
synchronized_pool_resource	线程安全的 memory_resource，用于管理不同块大小的池中的分配 (类)
unsynchronized_pool_resource	线程不安全的 memory_resource，用于管理不同块大小的池中的分配 (类)
monotonic_buffer_resource	一种特殊用途的 memory_resource，仅在资源被销毁时释放已分配的内存 (类)
polymorphic_allocator	一种分配器，支持基于与其构造的 memory_resource 的运行时多态 (类模板)
resource_adaptor	将分配器适配为 memory_resource (别名模板)

函数

定义于命名空间 std::experimental::pmr
比较
operator==operator!=	比较两个 memory_resource (函数)
operator==operator!=	比较两个分配器 (函数模板)
全局内存资源
new_delete_resource	返回一个静态的程序范围的 memory_resource，它使用全局的 operator new 和 operator delete 来分配和释放内存 (函数)
null_memory_resource	返回一个静态的 memory_resource，它不执行任何分配 (函数)
默认内存资源
get_default_resource	获取默认的 memory_resource (函数)
set_default_resource	设置默认的 memory_resource (函数)

概要

namespace std {
namespace experimental {
inline namespace fundamentals_v1 {
namespace pmr {
 
  class memory_resource;
 
  bool operator==(const memory_resource& a,
                  const memory_resource& b) noexcept;
  bool operator!=(const memory_resource& a,
                  const memory_resource& b) noexcept;
 
  template <class Tp> class polymorphic_allocator;
 
  template <class T1, class T2>
  bool operator==(const polymorphic_allocator<T1>& a,
                  const polymorphic_allocator<T2>& b) noexcept;
  template <class T1, class T2>
  bool operator!=(const polymorphic_allocator<T1>& a,
                  const polymorphic_allocator<T2>& b) noexcept;
 
  // The name resource_adaptor_imp is for exposition only.
  template <class Allocator> class resource_adaptor_imp;
 
  template <class Allocator>
    using resource_adaptor = resource_adaptor_imp<
      typename allocator_traits<Allocator>::template rebind_alloc<char>>;
 
  // Global memory resources
  memory_resource* new_delete_resource() noexcept;
  memory_resource* null_memory_resource() noexcept;
 
  // The default memory resource
  memory_resource* set_default_resource(memory_resource* r) noexcept;
  memory_resource* get_default_resource() noexcept;
 
  // Standard memory resources
  struct pool_options;
  class synchronized_pool_resource;
  class unsynchronized_pool_resource;
  class monotonic_buffer_resource;
 
} // namespace pmr
} // namespace fundamentals_v1
} // namespace experimental
} // namespace std