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/*
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* Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <strings.h>
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/time.h>
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#include "jni.h"
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#include "jni_util.h"
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#include "jlong.h"
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#include "nio.h"
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#include "nio_util.h"
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#include "sun_nio_ch_KQueue.h"
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_KQueue_keventSize(JNIEnv* env, jclass clazz)
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{
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return sizeof(struct kevent);
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}
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_KQueue_identOffset(JNIEnv* env, jclass clazz)
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{
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return offsetof(struct kevent, ident);
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}
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_KQueue_filterOffset(JNIEnv* env, jclass clazz)
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{
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return offsetof(struct kevent, filter);
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}
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_KQueue_flagsOffset(JNIEnv* env, jclass clazz)
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{
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return offsetof(struct kevent, flags);
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}
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_KQueue_create(JNIEnv *env, jclass clazz) {
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int kqfd = kqueue();
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if (kqfd < 0) {
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JNU_ThrowIOExceptionWithLastError(env, "kqueue failed");
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return IOS_THROWN;
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}
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return kqfd;
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}
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_KQueue_register(JNIEnv *env, jclass clazz, jint kqfd,
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jint fd, jint filter, jint flags)
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{
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struct kevent changes[1];
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int res;
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EV_SET(&changes[0], fd, filter, flags, 0, 0, 0);
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RESTARTABLE(kevent(kqfd, &changes[0], 1, NULL, 0, NULL), res);
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return (res == -1) ? errno : 0;
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}
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_KQueue_poll(JNIEnv *env, jclass clazz, jint kqfd, jlong address,
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jint nevents, jlong timeout)
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{
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struct kevent *events = jlong_to_ptr(address);
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int res;
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struct timespec ts;
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struct timespec *tsp;
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if (timeout >= 0) {
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ts.tv_sec = timeout / 1000;
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ts.tv_nsec = (timeout % 1000) * 1000000;
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tsp = &ts;
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} else {
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tsp = NULL;
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}
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res = kevent(kqfd, NULL, 0, events, nevents, tsp);
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if (res < 0) {
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if (errno == EINTR) {
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return IOS_INTERRUPTED;
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} else {
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JNU_ThrowIOExceptionWithLastError(env, "kqueue failed");
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return IOS_THROWN;
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}
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}
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return res;
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}
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