[C++知识库]Windows try_to_lock 例程 C/C++ 自学笔记

#include <iostream>
#include <string>
#include <thread>
#include <mutex>

using namespace std;

int com_i;
mutex mut;

void myThread()
{
?? ?while (1)
?? ?{
?? ??? ?unique_lock<mutex> sbguard1(mut,try_to_lock);

?? ??? ?if (sbguard1.owns_lock())
?? ??? ?{
?? ??? ??? ?cout << com_i++ << "..............................." << endl;
?? ??? ??? ?if (com_i > 1000)
?? ??? ??? ??? ?com_i = 0;
?? ??? ??? ?chrono::milliseconds dura(1000);
?? ??? ??? ?this_thread::sleep_for(dura);
?? ??? ?}
?? ??? ?else
?? ??? ?{
?? ??? ??? ?cout << "lock failed................................"<<endl;
?? ??? ??? ?chrono::milliseconds dura(300);
?? ??? ??? ?this_thread::sleep_for(dura);
?? ??? ?}
?? ?}
}

int main()
{
?? ?cout << "test" << endl;
?? ?com_i = 0;
?? ?thread t1(myThread);
?? ?thread t2(myThread);
?? ?t1.join();
?? ?t2.join();
}