std::condition_variable m_cond;//生成一个条件变量对象};intmain() { A a; std::thread t1(&A::inNum, &a); std::thread t2(&A::outNum, &a); t1.join(); t2.join();return0; }
std::thread 是C++11 引入的线程库中的类,用于表示和管理单个线程的执行。它允许程序员创建新的线程来并发地执行任务。 std::condition_variable 是C++11 标准库中的一个同步原语,用于线程间的通知和等待机制。它允许一个或多个线程在某个条件满足时被唤醒。 std::condition_variable 如何用于线程间的同步 std::...
blocks the current thread until the condition variable is woken up or after the specified timeout duration (public member function) c CND文件[医]等待时间 代码语言:txt 复制 © cppreference.com 在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。
#include <iostream>#include<queue>#include<thread>#include<mutex>#include<condition_variable>#include<functional>#include<vector>std::queue<std::function<void()>>task_queue; std::mutex mutex; std::condition_variable cond_var;booldone =false;voidworker(intid) {while(true) { std::function<void...
condition_variable(条件变量)是 C++11 中提供的一种多线程同步机制,它允许一个或多个线程等待另一个线程发出通知,以便能够有效地进行线程同步。 condition_variable 需要与 mutex(互斥锁)一起使用。当线程需要等待某个条件变成真时,它会获取一个互斥锁,然后在条件变量上等待,等待期间会自动释放互斥锁。另一个线程在...
// condition_variable example #include <iostream> // std::cout #include <thread> // std::thread #include <mutex> // std::mutex, std::unique_lock #include <condition_variable> // std::condition_variable std::mutex mtx; std::condition_variable cv; bool ready = false; void print_id ...
参考: https://en.cppreference.com/w/cpp/thread/condition_variable/notify_all及 【公开课】C++11开始的多线程编程(#5)_哔哩哔哩_bilibilimain.cpp #include <iostream> #include <thread> #inc…
#include <condition_variable> std::queue<int> queue; std::mutex mutex; std::condition_variable cond_var; const int max_queue_size = 10; void producer(int id) { for (int i = 0; i < 20; ++i) { std::this_thread::sleep_for(std::chrono::milliseconds(10)); // 模拟生产时间 ...
#include <thread> // std::thread #include <mutex> // std::mutex, std::unique_lock #include <condition_variable> // std::condition_variable std::mutex mtx; std::condition_variable produce,consume; int cargo = 0; // shared value by producers and consumers ...
std::mutex mtx; std::condition_variable cv; bool ready = false; void main_thread() { std::unique_lock<std::mutex> lock(mtx); cv.wait(lock, [] { return ready; }); // ... continue processing when ready ... } 在这个示例中,谓词是一个 Lambda 表达式 [] { return ready; },它...