CPP线程：生产者与消费者的问题

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#include <iostream>#include <thread>#include<condition_variable>#include <mutex>#include<ctime>#include <array>#include <vector>using namespace std;mutex m;condition_variable full,empty;bool flag = true;//标志 消费完了就退出vector<int>myint(10);//开辟10个元素int num = 10;void put(int num)//生产{for (int i = 0; i < num; i++){unique_lock<mutex>lk(m);while (10<=myint.size()){empty.wait(lk);//满了就一直等待}myint.push_back(i);//插入数据cout << "生产:" <<i<< endl;full.notify_all();}this_thread::sleep_for(chrono::seconds(3));flag = false;}void take()//消费{while (flag){unique_lock<mutex>lk(m);while (0==myint.size()){full.wait(lk);//等待}if (flag)//消费{cout << myint[myint.size() - 1] <<"ID："<<this_thread::get_id()<< endl;myint.pop_back();empty.notify_all();}}}//多个生产者  对  多个消费者void main(){//创建消费者thread t1(take);thread t2(take);thread t3(take);thread s1(put, 10);thread s2(put, 10);t1.join();t2.join();t3.join();cin.get();}//单个生产者 与  单个消费者void main(){//创建消费者thread t1(take);thread t2(take);thread t3(take);thread t4(take);put(10);//生产t1.join();t2.join();t3.join();t4.join();cin.get();}<img src="http://img.blog.csdn.net/20150822013207296?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

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