1 /*

     2  * Copyright (c) 2008, 2009, 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_EPollPort.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_EPollPort_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_EPollPort_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_EPollPort_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_EPollPort_close0(JNIEnv *env, jclass c, jint fd) {

    74     int res;

    75     RESTARTABLE(close(fd), res);

    76 }