/*
 * =========================================================================
 *
 * FileName: std_thread_lock.cpp
 *
 * Description:
 *
 * Version: 1.0
 * Created: 2018年07月16日 11:50:05
 * Last Modified: 2018年07月16日 11:51:02
 * Revision: none
 * Compiler: gcc
 *
 * Author: zt ()
 * Organization:
 *
 * =========================================================================
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>

#include <iostream>
#include <memory>
#include <algorithm>
#include <vector>
#include <thread>
#include <mutex>
#include <map>
#include <list>
#include <string>
#include <functional>

int i = 0;
std::mutex mut;

void Iplus()
{
 int c = 1000000;

 while ( c-- )
 {
 mut.lock();
 ++i;
 mut.unlock();
 }
}


int main ( int argc, char* argv[] )
{
 ( void ) argc;
 ( void ) argv;

 std::thread t1 ( Iplus );
 std::thread t2 ( Iplus );

 t1.join();
 t2.join();

 std::cout << "i= " << i << std::endl;


 return 0;
}