libhermit/usr/tests/thr_hello.c

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

#define MAX_THREADS 2

__thread int id = -1;

void* thread_func(void* arg)
{
	id = *((int*) arg);

	printf("Hello thread!!! id = %d\n", id);
	return 0;
}

int main(int argc, char** argv)
{
	pthread_t threads[MAX_THREADS];
	int param[MAX_THREADS];

	printf("Hello form main thread! id = %d\n", id);

	for(int i=0; i<MAX_THREADS; i++) {
		param[i] = i;
		int ret = pthread_create(threads+i, NULL, thread_func, param+i);
		if (ret) {
			printf("Thread creation failed! error =  %d\n", ret);
			return ret;
		} else printf("Create thread %d\n", i);
	}

	/* wait until all threads have terminated */
	for(int i=0; i<MAX_THREADS; i++)
		pthread_join(threads[i], NULL);	

	return 0;
}