thread.c

Sample program on using the libpthread of glibc GNU C library.

/****************************************************************
 * Copyright C 2002, Daniele Venzano                            *
 * This code is protected by the GPL License v. 2               *
 * You can find it al http://www.gnu.org                        *
 ****************************************************************/
#include <stdio.h>
#include <pthread.h>

void *my_thread();

int a,b,c,x=1,y=4,z=9,w;

int main()
{
	pthread_t my_thr;
	int err;

	err=pthread_create(&my_thr,NULL,&my_thread,NULL);
	a=x+y;
	pthread_join(my_thr,NULL);
	c=a-b;
	w=c+1;
	printf("a=%d b=%d c=%d x=%d y=%d z=%d w=%d\n",a,b,c,x,y,z,w);
	exit(0);
}

void *my_thread()
{
	b=z+1;
	pthread_exit(NULL);
}