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标准库头文件 <thread> (C++11)

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< cpp‎ | header
 
 
标准库头文件
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<concepts> (C++20)
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<system_error> (C++11)

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<memory_resource> (C++17)  
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并发支持
<stop_token> (C++20)
<thread> (C++11)
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<stdatomic.h> (C++23)
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<condition_variable> (C++11)  
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C 兼容性
<cstdbool> (C++11/17/20*)  
<ccomplex> (C++11/17/20*)
<ctgmath> (C++11/17/20*)

<cstdalign> (C++11/17/20*)

<ciso646> (直到 C++20)

 

此头文件是 线程支持 库的一部分。

内容

包含

(C++20)
三方比较运算符 支持[编辑]

命名空间

this_thread 提供访问当前执行线程的函数

(C++11)
管理一个独立线程
(类) [编辑]
(C++20)
std::thread,支持自动连接和取消
(类) [编辑]
专门化 std::hash
(类模板专门化)

函数

专门化 std::swap 算法
(函数) [编辑]
(C++20 中已移除)(C++20 中已移除)(C++20 中已移除)(C++20 中已移除)(C++20 中已移除)(C++20)
比较两个 thread::id 对象
(函数) [编辑]
序列化一个 thread::id 对象
(函数模板) [编辑]
定义在命名空间 std::this_thread
(C++11)
建议实现重新调度线程执行
(函数) [编辑]
(C++11)
返回当前线程的线程 ID
(函数) [编辑]
(C++11)
停止当前线程的执行,持续指定的时间
(函数) [编辑]
停止当前线程的执行,直到指定的时刻
(函数) [编辑]

[编辑] 概要

#include <compare>
 
namespace std {
  // class thread
  class thread;
 
  void swap(thread& x, thread& y) noexcept;
 
  // class jthread
  class jthread;
 
  // namespace this_thread
  namespace this_thread {
    thread::id get_id() noexcept;
 
    void yield() noexcept;
    template<class Clock, class Duration>
    void sleep_until(const chrono::time_point<Clock, Duration>& abs_time);
    template<class Rep, class Period>
    void sleep_for(const chrono::duration<Rep, Period>& rel_time);
  }
}

[编辑] std::thread

namespace std {
  class thread
  {
  public:
    // class thread::id
    class id;
    using native_handle_type = /* implementation-defined */;
 
    // construct/copy/destroy
    thread() noexcept;
    template<class F, class... Args>
    explicit thread(F&& f, Args&&... args);
    ~thread();
    thread(const thread&) = delete;
    thread(thread&&) noexcept;
    thread& operator=(const thread&) = delete;
    thread& operator=(thread&&) noexcept;
 
    // members
    void swap(thread&) noexcept;
    bool joinable() const noexcept;
    void join();
    void detach();
    id get_id() const noexcept;
    native_handle_type native_handle();
 
    // static members
    static unsigned int hardware_concurrency() noexcept;
  };
}

[编辑] std::jthread

namespace std {
  class jthread
  {
  public:
    // types
    using id                 = thread::id;
    using native_handle_type = thread::native_handle_type;
 
    // constructors, move, and assignment
    jthread() noexcept;
    template<class F, class... Args>
    explicit jthread(F&& f, Args&&... args);
    ~jthread();
    jthread(const jthread&) = delete;
    jthread(jthread&&) noexcept;
    jthread& operator=(const jthread&) = delete;
    jthread& operator=(jthread&&) noexcept;
 
    // members
    void swap(jthread&) noexcept;
    bool joinable() const noexcept;
    void join();
    void detach();
    id get_id() const noexcept;
    native_handle_type native_handle();
 
    // stop token handling
    stop_source get_stop_source() noexcept;
    stop_token get_stop_token() const noexcept;
    bool request_stop() noexcept;
 
    // specialized algorithms
    friend void swap(jthread& lhs, jthread& rhs) noexcept;
 
    // static members
    static unsigned int hardware_concurrency() noexcept;
 
  private:
    stop_source ssource; // exposition only
  };
}

[编辑] std::thread::id

namespace std {
  class thread::id
  {
  public:
    id() noexcept;
  };
 
  bool operator==(thread::id x, thread::id y) noexcept;
  strong_ordering operator<=>(thread::id x, thread::id y) noexcept;
 
  template<class CharT, class Traits>
  basic_ostream<CharT, Traits>& operator<<(basic_ostream<CharT, Traits>& out,
                                           thread::id id);
 
  template<class CharT>
  struct formatter<thread::id, CharT>;
 
  // hash support
  template<class T>
  struct hash;
  template<>
  struct hash<thread::id>;
}