linux多线程编程实例

Linux多线程编程实例可以使用pthread库进行实现。下面是一个简单的例子：

#include <pthread.h>
#include <stdio.h>

void *print_message_function( void *ptr );

main()
{
     pthread_t thread1, thread2;
     const char *message1 = "Thread 1";
     const char *message2 = "Thread 2";
     int  iret1, iret2;

    /* Create independent threads each of which will execute function */

     iret1 = pthread_create( &thread1, NULL, print_message_function, (void*) message1);
     iret2 = pthread_create( &thread2, NULL, print_message_function, (void*) message2);

     /* Wait till threads are complete before main continues. Unless we  */
     /* wait we run the risk of executing an exit which will terminate   */
     /* the process and all threads before the threads have completed.   */

     pthread_join( thread1, NULL);
     pthread_join( thread2, NULL); 

     printf("Thread 1 returns: %d\n",iret1);
     printf("Thread 2 returns: %d\n",iret2);
     exit(0);
}

void *print_message_function( void *ptr )
{
     char *message;
     message = (char *) ptr;
     printf("%s \n", message);
}

在上面的例子中， main() 函数创建了两个线程，分别执行 print_message_function() 函数。pthread_create() 函数用于创建新线程，pthread_join() 用于等待线程结束。

需要注意的是,这个例子是没有考虑线程同步的问题,如果需要进行同步，需要使用pthread库提供的互斥量等工具。