#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/sysinfo.h>
#include <sys/wait.h>
#include <stdio.h>
#include <pthread.h>

void* worker(void *arg)
{
	while (1) {
		pid_t p = fork();
		if (-1 == p) { /* error */
			perror("fork");
			_exit(EXIT_FAILURE);
		}
		if (0 == p) { /* child */
			_exit(42);
		}
		/* parent */
		int stat_loc;
		int s = waitpid(p, &stat_loc, 0);
		if (-1 == s) {
			perror("waitpid");
			_exit(EXIT_FAILURE);
		}
	}
}

int main(int argc, char **argv)
{
	int pool_size = get_nprocs() * 4;

	if (argv[1])
		pool_size = atoi(argv[1]);
	printf("Poolsize: %d\n", pool_size);

	pthread_t thread_id;
	int i;
	for (i = 0; i != pool_size; ++i) {
		if (pthread_create(&thread_id, NULL, worker, NULL) != 0) {
			perror("pthread_create");
			_exit(EXIT_FAILURE);
		}
	}

	/* Prevent exiting: wait for last thread (forever) */
	void *retval;
	pthread_join(thread_id, &retval);

	return 43;
}