1/*
2 * Copyright 2018, Xiang Fan, sfanxiang@gmail.com.
3 * Distributed under the terms of the MIT License.
4 */
5
6#include <stdio.h>
7#include <poll.h>
8
9
10int main()
11{
12	FILE* f = fopen("/dev/null", "w");
13	printf("f=%p\n", f);
14	int fd = fileno(f);
15	printf("fd=%d\n", fd);
16
17	struct pollfd pfd;
18	pfd.fd = fd;
19	pfd.events = POLLOUT;
20	pfd.revents = 0;
21
22	int rv = poll(&pfd, 1, -1);
23	printf("rv=%d\n", rv);
24	if (rv <= 0)
25		return 1;
26	printf("events=%08x revents=%08x\n", pfd.events, pfd.revents);
27	if (pfd.revents != POLLOUT)
28		return 2;
29
30	return 0;
31}
32