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。
在wait返回时,并且调用线程会锁定lock。如果无法满足此后条件[1],那么就会调用std::terminate。 ↑重新锁定互斥体的过程中抛出异常就会发生这种情况。 参数 lock-必须已经由调用线程锁定的锁 stoken-用于注册中断的停止令牌 pred-检查是否可以完成等待的谓词
cppreference 给出的官方解释: A condition variable is an object able to block the calling thread until notified to resume. It uses a unique_lock (over a mutex) to lock the thread when one of its wait functions is called. The thread remains blocked until woken up by another thread that ...
(enum) Functions notify_all_at_thread_exit (C++11) schedules a call tonotify_allto be invoked when this thread is completely finished (function) Synopsis namespacestd{classcondition_variable;classcondition_variable_any;voidnotify_all_at_thread_exit(condition_variable&cond, unique_lock<mutex>lk);...
1、https://www.apiref.com/cpp-zh/cpp/thread.html 2、https://en.cppreference.com/w/cpp/thread 3、书籍《c++服务器开发精髓》——张远龙 三、future 【并发编程十一】c++线程同步——future 四、信号量 参见【并发编程十二】c++线程同步——信号量(semaphore)...
cppreference.com Log in NamespacesPage DiscussionVariantsViews View Edit History Actionsstd::condition_variable_any::condition_variable_any From cppreference.com< cpp | thread | condition variable anyC++ Compiler support Freestanding and hosted Language Standard library Standard library headers ...
for (auto& th : threads) th.join(); return 0; } // reference: http://en.cppreference.com/w/cpp/thread/condition_variable std::mutex m; std::condition_variable cv6; std::string data; bool ready6 = false; bool processed = false; static void worker_thread() { // Wait until main...
cppreference上面是这么说的: The execution of the current thread (which shall have lockedlck'smutex) is blocked untilnotified. At the moment of blocking the thread, the function automatically callslck.unlock(), allowing other locked threads to continue. ...
我对std::condition_variable的使用有点困惑。我知道在调用mutex之前,我必须在unique_lockcondition_variable.wait()。我找不到的是在调用notify_one()或notify_all()之前是否也应该获取唯一锁。 cppreference.com上的示例相互矛盾。例如,notify_one 页面给出了这个例子: ...
示例修改自:http://en.cppreference.com/w/... 首先是头文件: #include <iostream> #include <string> #include <thread> #include <mutex> #include <condition_variable> 然后是两个线程共享的全局变量: std::mutex mutex; std::condition_variable cv; ...