3、线程标识
函数原型：
#include <pthread.h>
pthread_t pthread_self(void);
pid_t getpid(void);
getpid()用来取得目前进程的进程识别码,函数说明
例程8
程序目的：实现在新建立的线程中打印该线程的id和进程id
程序名称：pthread_id.c
/********************************************************************************************
** Name:pthread_id.c
** Used to study the multithread programming in Linux OS.
** Showing how to get the thread's tid and the process's pid.
** Author:zeickey
** Date:2006/9/16
** Copyright (c) 2006,All Rights Reserved!
*********************************************************************************************/
#include <stdio.h>
#include <pthread.h>
#include <unistd.h> /*getpid()*/
void *create(void *arg)
{
printf("New thread .... \n");
printf("This thread's id is %u \n", (unsigned int)pthread_self());
printf("The process pid is %d \n",getpid());
return (void *)0;
}
int main(int argc,char *argv[])
{
pthread_t tid;
int error;
printf("Main thread is starting ... \n");
error = pthread_create(&tid, NULL, create, NULL);
if(error)
{
printf("thread is not created ... \n");
return -1;
}
printf("The main process's pid is %d \n",getpid());
sleep(1);
return 0;
}
编译方法：
gcc -Wall -lpthread pthread_id.c
执行结果：
Ma
