| /* |
| * Copyright (c) 2012, 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 <strings.h> |
| #include <sys/types.h> |
| #include <sys/event.h> |
| #include <sys/time.h> |
| |
| #include "jni.h" |
| #include "jni_util.h" |
| #include "jlong.h" |
| #include "nio.h" |
| #include "nio_util.h" |
| |
| #include "sun_nio_ch_KQueue.h" |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_KQueue_keventSize(JNIEnv* env, jclass clazz) |
| { |
| return sizeof(struct kevent); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_KQueue_identOffset(JNIEnv* env, jclass clazz) |
| { |
| return offsetof(struct kevent, ident); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_KQueue_filterOffset(JNIEnv* env, jclass clazz) |
| { |
| return offsetof(struct kevent, filter); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_KQueue_flagsOffset(JNIEnv* env, jclass clazz) |
| { |
| return offsetof(struct kevent, flags); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_KQueue_create(JNIEnv *env, jclass clazz) { |
| int kqfd = kqueue(); |
| if (kqfd < 0) { |
| JNU_ThrowIOExceptionWithLastError(env, "kqueue failed"); |
| return IOS_THROWN; |
| } |
| return kqfd; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_KQueue_register(JNIEnv *env, jclass clazz, jint kqfd, |
| jint fd, jint filter, jint flags) |
| |
| { |
| struct kevent changes[1]; |
| int res; |
| |
| EV_SET(&changes[0], fd, filter, flags, 0, 0, 0); |
| RESTARTABLE(kevent(kqfd, &changes[0], 1, NULL, 0, NULL), res); |
| return (res == -1) ? errno : 0; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_KQueue_poll(JNIEnv *env, jclass clazz, jint kqfd, jlong address, |
| jint nevents, jlong timeout) |
| { |
| struct kevent *events = jlong_to_ptr(address); |
| int res; |
| struct timespec ts; |
| struct timespec *tsp; |
| |
| if (timeout >= 0) { |
| ts.tv_sec = timeout / 1000; |
| ts.tv_nsec = (timeout % 1000) * 1000000; |
| tsp = &ts; |
| } else { |
| tsp = NULL; |
| } |
| |
| res = kevent(kqfd, NULL, 0, events, nevents, tsp); |
| if (res < 0) { |
| if (errno == EINTR) { |
| return IOS_INTERRUPTED; |
| } else { |
| JNU_ThrowIOExceptionWithLastError(env, "kqueue failed"); |
| return IOS_THROWN; |
| } |
| } |
| return res; |
| } |