io.questdb.network.EpollAccessor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of questdb Show documentation
QuestDB is high performance SQL time series database
The newest version!
/*******************************************************************************
 *     ___                  _   ____  ____
 *    / _ \ _   _  ___  ___| |_|  _ \| __ )
 *   | | | | | | |/ _ \/ __| __| | | |  _ \
 *   | |_| | |_| |  __/\__ \ |_| |_| | |_) |
 *    \__\_\\__,_|\___||___/\__|____/|____/
 *
 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2024 QuestDB
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

package io.questdb.network;

import static io.questdb.std.Files.toOsFd;

public class EpollAccessor {
    public static final short DATA_OFFSET;
    public static final int EPOLLET;
    public static final int EPOLLIN;
    public static final int EPOLLONESHOT;
    public static final int EPOLLOUT;
    public static final int EPOLL_CTL_ADD;
    public static final int EPOLL_CTL_DEL;
    public static final int EPOLL_CTL_MOD;
    public static final short EVENTS_OFFSET;
    static final short SIZEOF_EVENT;

    private static native int epollWait(int epfd, long eventPtr, int eventCount, int timeout);

    private static native long readEventFd(int fd);

    private static native int writeEventFd(int fd);

    static native int epollCreate();

    static native int epollCtl(int epfd, int op, int fd, long eventPtr);

    static int epollWait(long epfd, long eventPtr, int eventCount, int timeout) {
        return epollWait(toOsFd(epfd), eventPtr, eventCount, timeout);
    }

    static native int eventFd();

    static native int getCtlAdd();

    static native int getCtlDel();

    static native int getCtlMod();

    static native short getDataOffset();

    static native int getEPOLLET();

    static native int getEPOLLIN();

    static native int getEPOLLONESHOT();

    static native int getEPOLLOUT();

    static native short getEventSize();

    static native short getEventsOffset();

    static long readEventFd(long fd) {
        return readEventFd(toOsFd(fd));
    }

    static int writeEventFd(long fd) {
        return writeEventFd(toOsFd(fd));
    }

    static {
        DATA_OFFSET = getDataOffset();
        EVENTS_OFFSET = getEventsOffset();
        SIZEOF_EVENT = getEventSize();
        EPOLLIN = getEPOLLIN();
        EPOLLET = getEPOLLET();
        EPOLLOUT = getEPOLLOUT();
        EPOLLONESHOT = getEPOLLONESHOT();
        EPOLL_CTL_ADD = getCtlAdd();
        EPOLL_CTL_MOD = getCtlMod();
        EPOLL_CTL_DEL = getCtlDel();
    }
}