Linux下的pthread多线程编程

#include <pthread.h>int pthread_create(pthread_t *restrict tidp,                   const pthread_attr_t *restrict attr,                   void *(*start_rtn)(void),                    void *restrict arg);Returns: 0 if OK, error number on failure第一个参数为指向线程标识符的指针。第二个参数用来设置线程属性。第三个参数是线程运行函数的起始地址。最后一个参数是运行函数的参数。

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#include <pthread.h>#include <stdlib.h>#include <unistd.h>#include <stdio.h>#include <sys/types.h>#define ERROR -1#define OK 0 /************************* *函数名:thread_function *描述：线程函数，打印 *输入参数：无 *输出参数：无 *返回值：无 * **********************/void *thread_function(void *arg){int i = 0;for ( i = 0; i < 20; i++){printf("Thread says hi,%d!\n",i);}}int main(void){pthread_t mythread;if ( pthread_create(&mythread,NULL,thread_function,NULL) ){printf("Error creating thread\n");return ERROR;}/*等待另一个线程执行完毕*/if ( pthread_join(mythread,NULL)){printf("Error Joining thread");return ERROR;}printf("main over!\n");return OK;}

gcc thread.c -o thead 编译一把：会报错,如下，

/tmp/ccIlZgdh.o: In function `main':thread.c:(.text+0x65): undefined reference to `pthread_create'thread.c:(.text+0x91): undefined reference to `pthread_join'collect2: ld 返回 1

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需要更改一下，因为pthread默认是不在Linux库中的。

gcc thread.c -o -lpthread thread

即可