std::condition_variable&cv,constint&flag){std::unique_lock<std::mutex>uni_m(mu);cv.wait(uni_m,[=]{returnflag!=1;});cout<<"Thread ID: "<<std::this_thread::get_id()<<endl;return;}intmain(){std::mutexcv_mutex;std::
std::condition_variable_any类 与std::condition_variable类似,只不过std::condition_variable_any的wait函数可以接受任何lockadle参数。而std::condition_variable只能接受std::unique_lock类型的参数,除此意外和std::condition_variable几乎完全一样。 condition_variable代码实例 #include<iostream>#include<string>#inclu...
// 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 ...
condition_variable是一个类,它的定义有一点长,不过我们可以注意到,不外乎就是:私有成员变量、构造函数、析构函数、等待与唤醒方法。 首先,我们来看构造函数和析构函数: condition_variable() {// 构造函数,初始化条件变量,所有的条件变量必须初始化后才能使用。 _Cnd_initX(&_Cnd); } ~condition_variable() ...
condition_variable 类型的对象始终使用 unique_lock<mutex> 等待(有关可与任何类型的可锁定类型一起使用的替代方法,可参见 condition_variable_any)。 // condition_variable example #include <iostream> // std::cout #include <thread> // std::thread ...
The key difference from the first exampleconditionVariable.cppis the booleandataReadyused in line 11 as an additional condition.dataReadyis set totruein line 28. It is checked in the functionwaitingForWork: condVar.waint(lck,[]return dataReady;}). Thewait()method has an additional overload ...
importjava.util.concurrent.locks.Condition;importjava.util.concurrent.locks.Lock;importjava.util.concurrent.locks.ReentrantLock;publicclassConditionVariableExample{privateLocklock=newReentrantLock();privateConditioncondition=lock.newCondition();privatebooleanconditionMet=false;publicvoidthread1(){lock.lock();//...
namespacestd{classcondition_variable;classcondition_variable_any;voidnotify_all_at_thread_exit(condition_variable&cond, unique_lock<mutex>lk);enumclasscv_status{no_timeout, timeout};} 类std::condition_variable classcondition_variable{public:condition_variable();~condition_variable();condition_variable...
Condition_variable的实现是基于互斥量(Mutex)和条件变量(Condition)的。互斥量用于保护共享数据的访问,而条件变量则用于线程的等待和唤醒。当一个线程等待条件满足时,它会释放所持有的互斥量,并进入阻塞状态,直到条件满足后被唤醒。而通知线程在某些条件发生变化时,通过条件变量唤醒等待的线程。 二、用法 1.头文件和命...
No compatible source was found for this media. stdmutex astdcondition_variable breadystdunique_lockstdmutexastdcoutstdendlb.wait(lock,[]{returnready;});std::cout<<"Signal Received"<<std::endl;}intmain(){std::thready(x);std::this_thread::sleep_for(std::chrono::seconds(3));{std::lock...