1 /*
   2  * Copyright (c) 2019, 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 #include <winsock2.h>
  26 
  27 #include "jni.h"
  28 #include "jni_util.h"
  29 #include "jlong.h"
  30 #include "nio.h"
  31 #include "sun_nio_ch_PollPoller.h"
  32 
  33 JNIEXPORT jint JNICALL
  34 Java_sun_nio_ch_PollPoller_poll(JNIEnv *env, jclass clazz,
  35                                 jlong address, jint numfds, jint timeout)
  36 {
  37     LPWSAPOLLFD a = (LPWSAPOLLFD) jlong_to_ptr(address);
  38     int res = WSAPoll(a, numfds, timeout);
  39     if (res == SOCKET_ERROR) {
  40         JNU_ThrowIOExceptionWithLastError(env, "WSAPoll failed");
  41         return IOS_THROWN;
  42     }
  43     return (jint) res;
  44 }
  45