49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
/*************************************************************************
|
||
> File Name : demo3_dead_lock.cpp
|
||
> Author : TL Song
|
||
> EMail : songtianlun@frytea.com
|
||
> Created Time : Mon Feb 8 08:54:17 2021
|
||
************************************************************************/
|
||
|
||
#include <iostream>
|
||
#include <thread>
|
||
#include <vector>
|
||
#include <mutex>
|
||
#include <chrono>
|
||
#include <stdexcept>
|
||
|
||
int counter = 0;
|
||
std::mutex mtx; // 保护counter
|
||
|
||
void increase_proxy(int time, int id) {
|
||
for (int i = 0; i < time; i++) {
|
||
mtx.lock();
|
||
// 线程1上锁成功后,抛出异常:未释放锁
|
||
if (id == 1) {
|
||
throw std::runtime_error("throw excption....");
|
||
}
|
||
// 当前线程休眠1毫秒
|
||
std::this_thread::sleep_for(std::chrono::milliseconds(1));
|
||
counter++;
|
||
mtx.unlock();
|
||
}
|
||
}
|
||
|
||
void increase(int time, int id) {
|
||
try {
|
||
increase_proxy(time, id);
|
||
}
|
||
catch (const std::exception& e){
|
||
std::cout << "id:" << id << ", " << e.what() << std::endl;
|
||
}
|
||
}
|
||
|
||
int main(int argc, char** argv) {
|
||
std::thread t1(increase, 10000, 1);
|
||
std::thread t2(increase, 10000, 2);
|
||
t1.join();
|
||
t2.join();
|
||
std::cout << "counter:" << counter << std::endl;
|
||
return 0;
|
||
}
|