C++ (Cpp) sys_epoll_create Examples

Example #1

static int faf_poll_init_epfd(void)
{
	long pid;
	int epfd;

	if (faf_poll_epfd >= 0)
		goto out;

	epfd = (int) sys_epoll_create(FAF_POLL_NR_FD);
	if (epfd < 0)
		goto err_epfd;

	pid = kernel_thread(faf_poll_thread, (void *)(long)epfd, CLONE_FILES);
	if (pid < 0)
		goto err_thread;

	faf_poll_epfd = epfd;

out:
	return 0;

err_thread:
	sys_close(epfd);
	epfd = (int)pid;
err_epfd:
	return epfd;
}

Example #2

struct file *cpt_open_epolldev(struct cpt_file_image *fi,
			       unsigned flags,
			       struct cpt_context *ctx)
{
	struct file *file;
	int efd;

	/* Argument "size" is ignored, use just 1 */
	efd = sys_epoll_create(1);
	if (efd < 0)
		return ERR_PTR(efd);

	file = fget(efd);
	sys_close(efd);
	return file;
}