c++ 多线程编程

http://blog.csdn.net/hitwengqi/article/details/8015646

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

using namespace std;

#define NUM_THREADS 5

void* say_hello(void* args)
{
sleep(10);
cout << "hello..." << endl;
} //函数返回的是函数指针，便于后面作为参数

int main()
{
pthread_t tids[NUM_THREADS];//线程id
for(int i=0; i < NUM_THREADS; ++i)
{
int ret = pthread_create(&tids[i], NULL, say_hello, NULL);//参数：创建线程的id, 线程参数，线程运行函数的起始地址，运行函数的参数

if( ret != 0 ) //创建线程成功返回0http://i.cnblogs.com/EditPosts.aspx?postid=4454529
{
cout << "pthread_create error:error_code" << ret << endl;
}
}
pthread_exit( NULL); //等待各个线程退出后，进程才结束，否则进程强制结束，线程处于未终止的状态
}
/* vim: set ts=4 sw=4 sts=4 tw=100 */
g++ -o muti_thread_test_1 muti_thread_test_1.cpp -lpthread

#include <iostream>
#include <pthread.h>
using namespace std;

#define NUM_THREADS 5

class Hello
{
public:
static void* sayHello(void* args)
{
cout << "hello ... ..." << endl;
}
};

int main()
{
pthread_t tids[NUM_THREADS];
for(int i=0; i < NUM_THREADS; ++i)
{
int ret = pthread_create(&tids[i], NULL, Hello::sayHello(), NULL);
if (ret!=0){
cout <<  "pthread_create error:error_code" << ret << endl;
}
}
return 0;
}