1 /*
   2  * Copyright (c) 2012, 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 "jni.h"
  27 #include "jni_util.h"
  28 #include "jvm.h"
  29 #include "jlong.h"
  30 #include "nio_util.h"
  31 
  32 #include "sun_nio_ch_KQueuePort.h"
  33 
  34 #include <unistd.h>
  35 #include <sys/types.h>
  36 #include <sys/socket.h>
  37 
  38 JNIEXPORT void JNICALL
  39 Java_sun_nio_ch_KQueuePort_socketpair(JNIEnv* env, jclass clazz, jintArray sv) {
  40     int sp[2];
  41     if (socketpair(PF_UNIX, SOCK_STREAM, 0, sp) == -1) {
  42         JNU_ThrowIOExceptionWithLastError(env, "socketpair failed");
  43     } else {
  44         jint res[2];
  45         res[0] = (jint)sp[0];
  46         res[1] = (jint)sp[1];
  47         (*env)->SetIntArrayRegion(env, sv, 0, 2, &res[0]);
  48     }
  49 }
  50 
  51 JNIEXPORT void JNICALL
  52 Java_sun_nio_ch_KQueuePort_interrupt(JNIEnv *env, jclass c, jint fd) {
  53     int res;
  54     int buf[1];
  55     buf[0] = 1;
  56     RESTARTABLE(write(fd, buf, 1), res);
  57     if (res < 0) {
  58         JNU_ThrowIOExceptionWithLastError(env, "write failed");
  59     }
  60 }
  61 
  62 JNIEXPORT void JNICALL
  63 Java_sun_nio_ch_KQueuePort_drain1(JNIEnv *env, jclass cl, jint fd) {
  64     int res;
  65     char buf[1];
  66     RESTARTABLE(read(fd, buf, 1), res);
  67     if (res < 0) {
  68         JNU_ThrowIOExceptionWithLastError(env, "drain1 failed");
  69     }
  70 }
  71 
  72 JNIEXPORT void JNICALL
  73 Java_sun_nio_ch_KQueuePort_close0(JNIEnv *env, jclass c, jint fd) {
  74     int res;
  75     RESTARTABLE(close(fd), res);
  76 }