1/*
2 * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26#include <poll.h>
27
28#include "jni.h"
29#include "jni_util.h"
30#include "jvm.h"
31#include "jlong.h"
32#include "nio.h"
33#include "sun_nio_ch_PollSelectorImpl.h"
34
35JNIEXPORT jint JNICALL
36Java_sun_nio_ch_PollSelectorImpl_poll(JNIEnv *env, jclass clazz,
37 jlong address, jint numfds,
38 jint timeout)
39{
40 struct pollfd *a;
41 int res;
42
43 a = (struct pollfd *) jlong_to_ptr(address);
44 res = poll(a, numfds, timeout);
45 if (res < 0) {
46 if (errno == EINTR) {
47 return IOS_INTERRUPTED;
48 } else {
49 JNU_ThrowIOExceptionWithLastError(env, "poll failed");
50 return IOS_THROWN;
51 }
52 }
53 return (jint) res;
54}
55
56