c++ break while

#include <iostream>

#include <vector>

#include <pthread.h>

#include "destory_free_while.h"

using namespace std;



Worker::Worker() {

    shutdown = false;

    num_thread = 10;

}

void Worker::start() {

    tids.resize(num_thread);

    for (int i = 0; i <num_thread ; ++i) { 

        if (pthread_create(&tids[i], NULL, sleeping, this) == 0) {

            cout << "thread start complete" << endl;

        }

    }

}



Worker::~Worker() {

    cout << "begin destory instance" << endl;

    shutdown = true;

    for(unsigned int i=0; i<tids.size(); i++) {

        pthread_join(tids[i], NULL);

    }

}





void* Worker::sleeping(void* arg) {

    Worker* work = (Worker*)arg;  

    while(true) {

        cout << "." << flush;

        sleep(1);

        if(work->shutdown) {

            cout << " destory instance , thread quit" << endl;

            break;

        }



    }

}



/* vim: set ts=4 sw=4 sts=4 tw=100 */

#ifndef DESTORY_FREE_WHILE_H

#define DESTORY_FREE_WHILE_H

#include <vector>

#include <pthread.h>

class Worker {

public:

    Worker();

    ~Worker();

    void start();

public:

    static void* sleeping(void* arg);

public:

    std::vector<pthread_t> tids;

    int num_thread;

    bool shutdown; 

};



#endif  // DESTORY_FREE_WHILE_H

#include <iostream>

#include "destory_free_while.h"

using namespace std;



int main() {

    Worker worker;

    worker.start();

    sleep(20);

    cout << "program exit" << endl;

}