shared_mutex类是一个同步原语,可用于保护共享数据不被多个线程同时访问。与便于独占访问的其他互斥体类型不同,shared_mutex 拥有两个访问级别: 共享- 多个线程能共享同一互斥体的所有权。 独占- 仅一个线程能占有互斥。 若一个线程已获取独占 锁(通过lock、try_lock),则无其他线程能获取该锁(包括共享的)...
shared_timed_mutex类是一种同步原语,能用于保护数据免受多个线程同时访问。与其他促进独占访问的互斥体类型相反,它拥有两个访问层次: 共享- 多个线程能共享同一互斥体的所有权。 独占- 仅一个线程能占有互斥体。 共享互斥体通常用于多个读线程能同时访问同一资源而不导致数据竞争,但只有一个写线程能访问的情形。
std::shared_mutex::unlock_shared C++ Concurrency support library std::shared_mutex voidunlock_shared(); (since C++17) Releases the mutex from shared ownership by the calling thread. The mutex must be locked by the current thread of execution in shared mode, otherwise, the behavior is undefined...
std::shared_mutex::unlock C++ Concurrency support library std::shared_mutex voidunlock(); (since C++17) Unlocks the mutex. The mutex must be locked by the current thread of execution, otherwise, the behavior is undefined. This operationsynchronizes-with(as defined instd::memory_order) any su...
Planned Maintenance The site will be in a temporary read-only mode in the next few weeks to facilitate some long-overdue software updates. We apologize for any inconvenience this may cause! C++ reference C++11,C++14,C++17,C++20,C++23,C++26│Compiler supportC++11,C++14,C++17,C++20,C++23,C+...
#include <mutex>:C++互斥量库 #include <future>:C++异步库线程的创建 以普通函数作为线程入口函数:void entry_1() { } void entry_2(int val) { } std::thread my_thread_1(entry_1); std::thread my_thread_2(entry_2, 5); 以类对象作为线程入口函数:class...
#include <mutex>:C++互斥量库 #include <future>:C++异步库线程的创建 以普通函数作为线程入口函数:void entry_1() { } void entry_2(int val) { } std::thread my_thread_1(entry_1); std::thread my_thread_2(entry_2, 5); 以类对象作为线程入口函数:class...
(C++11 起)中断语句Several variationsC++ 函数参数和返回重载内置函数Lambda 表达式C++多线程多线程介绍线程的创建线程的销毁this_thread锁锁的基本操作更简单的锁 —— std::lock_guard<Mutex>unique_lock<Mutex>std::adopt_lockstd::try_to_lockstd::defer_lockstd::unique_lock<Mutex>::releasestd::call_once...
#include <mutex>:C++互斥量库 #include <future>:C++异步库 线程的创建 以普通函数作为线程入口函数: void entry_1() { } void entry_2(int val) { } std::thread my_thread_1(entry_1); std::thread my_thread_2(entry_2, 5); 以类对象作为线程入口函数: class Entry { void operator()() ...
std::mutex m; std::lock_guard<std::mutex> lock(m); 额外参数:std::adopt_lock:只需解锁,无需上锁 // 手动上锁 m.lock(); std::lock_guard<mutex> lock(m, std::adopt_lock); unique_lock<Mutex> 构造上锁,析构解锁 std::mutex m; std::unique_lock<mutex> lock(m); std::adopt_lock 只...