/*

 * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include <poll.h>

#include "jni.h"

#include "jni_util.h"

#include "jvm.h"

#include "jlong.h"

#include "nio.h"

#include "sun_nio_ch_PollSelectorImpl.h"

JNIEXPORT jint JNICALL

Java_sun_nio_ch_PollSelectorImpl_poll(JNIEnv *env, jclass clazz,

                                      jlong address, jint numfds,

                                      jint timeout)

{

    struct pollfd *a;

    int res;

    a = (struct pollfd *) jlong_to_ptr(address);

    res = poll(a, numfds, timeout);

    if (res < 0) {

        if (errno == EINTR) {

            return IOS_INTERRUPTED;

        } else {

            JNU_ThrowIOExceptionWithLastError(env, "poll failed");

            return IOS_THROWN;

        }

    }

    return (jint) res;

}