/*

 * Copyright (c) 2000, 2008, 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 <netdb.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include <poll.h>

#if __linux__

#include <netinet/in.h>

#endif

#include "jni.h"

#include "jni_util.h"

#include "net_util.h"

#include "jvm.h"

#include "jlong.h"

#include "sun_nio_ch_SocketChannelImpl.h"

#include "nio_util.h"

#include "nio.h"

JNIEXPORT jint JNICALL

Java_sun_nio_ch_SocketChannelImpl_checkConnect(JNIEnv *env, jobject this,

                                               jobject fdo, jboolean block,

                                               jboolean ready)

{

    int error = 0;

    socklen_t n = sizeof(int);

    jint fd = fdval(env, fdo);

    int result = 0;

    struct pollfd poller;

    poller.revents = 1;

    if (!ready) {

        poller.fd = fd;

        poller.events = POLLOUT;

        poller.revents = 0;

        result = poll(&poller, 1, block ? -1 : 0);

        if (result < 0) {

            JNU_ThrowIOExceptionWithLastError(env, "Poll failed");

            return IOS_THROWN;

        }

        if (!block && (result == 0))

            return IOS_UNAVAILABLE;

    }

    if (poller.revents) {

        errno = 0;

        result = getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &n);

        if (result < 0) {

            handleSocketError(env, errno);

            return JNI_FALSE;

        } else if (error) {

            handleSocketError(env, error);

            return JNI_FALSE;

        }

        return 1;

    }

    return 0;

}