c++线程测试例程

环境使用ubuntu18.04，使用POSIX这个库

1.创建一个线程，并执行

2.等待线程结束，并退出主函数。

完整example.cpp代码：

#include 
#include 
#include 
#include 
#include 
#include 
void * threadFunc(void * arg)
{
    std::cout << "Thread Function :: Start" << std::endl;
    // Sleep for 2 seconds
    sleep(2);
    std::cout << "Thread Function :: End" << std::endl;
    return NULL;
}
int main()
{
    // Thread id
    pthread_t threadId;
    // Create a thread that will function threadFunc()
    int err = pthread_create(&threadId, NULL, &threadFunc, NULL);
    // Check if thread is created sucessfuly
    printf("***********err:t%dn",err);
    if (err)
    {
        std::cout << "Thread creation failed : " << strerror(err);
        return err;
    }
    else
        std::cout << "Thread Created with ID : " << threadId << std::endl;
    // Do some stuff in Main Thread
    std::cout << "Waiting for thread to exit" << std::endl;
    // Wait for thread to exit
    err = pthread_join(threadId, NULL);
    // check if joining is sucessful
    if (err)
    {
        std::cout << "Failed to join Thread : " << strerror(err) << std::endl;
        return err;
    }
    std::cout << "Exiting Main" << std::endl;
    return 0;
}

编译使用：

g++ example.cpp -lpthread

或cmake，CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
project(pthread_demo)

add_executable(example example.cpp)

target_link_libraries(example pthread)

运行后输出如下结果：

./a.out: