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::
// 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 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 #include <mutex> // std::mutex, std::unique_lock ...
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...
std::condition_variable 条件变量void wait( std::unique_lock<std::mutex>& lock ); #1 template< class Predicate > void wait( std::unique_lock<std::mutex>& lock, Predicate stop_waiting ); #2多线程轮流打印ABC#include <iostream> #include <thread> #include <condition_variable> #include <vect...
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...
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 ...
alongside the main thread. Aunique_lockis created there and the condition variablecvis going to wait (some situation like sleeping until an event wakes it up) on line 17, so the worker thread stops here whereas the main thread has already been working printing "example data" on line 37 th...
一、定义condition_variable对象 使用condition_variable前,需要先定义一个condition_variable对象,我们可以使用std::condition_variable来定义: ```c++ std::condition_variable cv; ``` 二、定义互斥锁 在condition_variable使用中,我们需要借助互斥锁(mutex)来保证线程间的互斥访问,下面是定义互斥锁的示例代码: ```...
Let's look at the following example, where we are going to consider the basic usage of the notify_all() function. Open Compiler #include <iostream> #include <thread> #include <condition_variable> #include <mutex> std::condition_variable a; std::mutex b; bool ready = false; void x(int...