标准库头文件 <condition_variable> (C++11)

 

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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)

 

此头文件是 线程支持 库的一部分。

类
condition_variable (C++11)	提供与 std::unique_lock 关联的条件变量 (类)
condition_variable_any (C++11)	提供与任何锁类型关联的条件变量 (类)
cv_status (C++11)	列出条件变量上定时等待的可能结果 (枚举)
函数
notify_all_at_thread_exit (C++11)	计划在当前线程完全结束时调用 notify_all (函数)

概要

namespace std {
  class condition_variable;
  class condition_variable_any;
 
  void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
 
  enum class cv_status { no_timeout, timeout };
}

类 std::condition_variable

namespace std {
  class condition_variable {
  public:
    condition_variable();
    ~condition_variable();
 
    condition_variable(const condition_variable&) = delete;
    condition_variable& operator=(const condition_variable&) = delete;
 
    void notify_one() noexcept;
    void notify_all() noexcept;
    void wait(unique_lock<mutex>& lock);
    template<class Pred>
      void wait(unique_lock<mutex>& lock, Pred pred);
    template<class Clock, class Duration>
      cv_status wait_until(unique_lock<mutex>& lock,
                           const chrono::time_point<Clock, Duration>& abs_time);
    template<class Clock, class Duration, class Pred>
      bool wait_until(unique_lock<mutex>& lock,
                      const chrono::time_point<Clock, Duration>& abs_time, Pred pred);
    template<class Rep, class Period>
      cv_status wait_for(unique_lock<mutex>& lock,
                         const chrono::duration<Rep, Period>& rel_time);
    template<class Rep, class Period, class Pred>
      bool wait_for(unique_lock<mutex>& lock,
                    const chrono::duration<Rep, Period>& rel_time, Pred pred);
 
    using native_handle_type = /* implementation-defined */;
    native_handle_type native_handle();
  };
}

类 std::condition_variable_any

namespace std {
  class condition_variable_any {
  public:
    condition_variable_any();
    ~condition_variable_any();
 
    condition_variable_any(const condition_variable_any&) = delete;
    condition_variable_any& operator=(const condition_variable_any&) = delete;
 
    void notify_one() noexcept;
    void notify_all() noexcept;
 
    // noninterruptible waits
    template<class Lock>
      void wait(Lock& lock);
    template<class Lock, class Pred>
      void wait(Lock& lock, Pred pred);
 
    template<class Lock, class Clock, class Duration>
      cv_status wait_until(Lock& lock,
                           const chrono::time_point<Clock, Duration>& abs_time);
    template<class Lock, class Clock, class Duration, class Pred>
      bool wait_until(Lock& lock, const chrono::time_point<Clock, Duration>& abs_time,
                      Pred pred);
    template<class Lock, class Rep, class Period>
      cv_status wait_for(Lock& lock, const chrono::duration<Rep, Period>& rel_time);
    template<class Lock, class Rep, class Period, class Pred>
      bool wait_for(Lock& lock, const chrono::duration<Rep, Period>& rel_time, Pred pred);
 
    // interruptible waits
    template<class Lock, class Pred>
      bool wait(Lock& lock, stop_token stoken, Pred pred);
    template<class Lock, class Clock, class Duration, class Pred>
      bool wait_until(Lock& lock, stop_token stoken,
                      const chrono::time_point<Clock, Duration>& abs_time, Pred pred);
    template<class Lock, class Rep, class Period, class Pred>
      bool wait_for(Lock& lock, stop_token stoken,
                    const chrono::duration<Rep, Period>& rel_time, Pred pred);
  };
}