cppreference.com 创建账户 std::condition_variable 在标头<condition_variable>定义 classcondition_variable; (C++11 起) std::condition_variable是与std::mutex一起使用的同步原语,它能用于阻塞一个线程,或同时阻塞多个线程,直至另一线程修改共享变量(条件)并通知std::condition_variable。
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_variablenamespace std { class condition_variable { public: condition_...
3.4、demo #include<iostream>#include<thread>#include<mutex>#include<deque>#include<chrono>#include<condition_variable>usingnamespacestd; mutex mtx; deque<int> q; condition_variable cv;//线程A,producervoidtask1(){inti =0;while(true) {unique_lock<mutex>lock(mtx);if(q.size() <1000) {if(i...
std::condition_variable - cppreference.com Acquire a std::mutex (typically via std::lock_guard). Modify the shared variable while the lock is owned. Call notify_one or notify_all on the std::condition_variable (can be done after releasing the lock). 随意,逻辑上不会出错。 如果先unlock然...
c++ condition_variable的wait 语法糖 最近在复盘之前用到的线程同步的一些知识点,话不多说,先看个例子吧: 摘自:http://www.cplusplus.com/reference/condition_variable/condition_variable/wait/ //condition_variable::wait (with predicate)#include <iostream>//std::cout#include <thread>//std::thread, std...
namespacestd{classcondition_variable;classcondition_variable_any;voidnotify_all_at_thread_exit(condition_variable&cond, unique_lock<mutex>lk);enumclasscv_status{no_timeout, timeout};} Classstd::condition_variable namespacestd{classcondition_variable{public:condition_variable();~condition_variable();co...
namespace condition_variable_ { // // reference: http://www.cplusplus.com/reference/condition_variable/condition_variable/ std::mutex mtx; std::condition_variable cv; bool ready = false; static void print_id(int id) { std::unique_lock<std::mutex> lck(mtx); ...
先贴一个condition_variable的讲解:https://en.cppreference.com/w/cpp/thread/condition_variable,很详细也很全面,但是是英文的,劝退了一部分英语不好的人(也包括我),但是借助翻译还是大概可以看下来的,而且里面的两个代码也很有代表性,使用的生产者消费者模式,推给大家。
回到正题，遇到这种问题本来就是无解的，因为notify本来就是不管有没有cv接收到就返回的。所以遇到这种...
condition_variable_any(); (1) (since C++11) condition_variable_any( const condition_variable_any& ) = delete; (2) (since C++11) 1) Constructs an object of type std::condition_variable_any.2) Copy constructor is deleted.Parameters(none) ...