pthread 之thread[线程]

线程有三个操作
pthread_create[线程创建]，pthread_exit[线程退出]，pthread_join[线程等待]

请看如下代码实例

#include <iostream>
#include <pthread.h>
#include <unistd.h>

using namespace std;


void *my_print_1(void * ptr)
{
    cout <<"I am thread " << pthread_self() << endl;
    pthread_exit(0);
}

void *my_print_2(void *ptar)
{
    sleep(1);

    cout <<"I am thread " << pthread_self()<< endl;
    pthread_exit(0);
}

int main()
{
    pthread_t p1;
    pthread_t p2;
    int rec1 = pthread_create( &p1,NULL,my_print_1,NULL);
    if(rec1)
    {
        cout <<"create p1 error!" << endl;
        return 1;
    }

    int rec2 = pthread_create( &p2,NULL,my_print_2,NULL);

    if(rec2)
    {
        cout <<"create p2 error!" << endl;
    }

    pthread_join(p1,NULL);
    pthread_join(p2,NULL);


    return 0;
}