Native.java — netty Source File

Source Code

/*
 * Copyright 2024 The Netty Project
 *
 * The Netty Project licenses this file to you 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:
 *
 *   https://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.netty.channel.uring;

import io.netty.channel.DefaultFileRegion;
import io.netty.channel.unix.Buffer;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import io.netty.channel.unix.FileDescriptor;
import io.netty.channel.unix.PeerCredentials;
import io.netty.channel.unix.Unix;
import io.netty.util.internal.ClassInitializerUtil;
import io.netty.util.internal.NativeLibraryLoader;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.SystemPropertyUtil;
import io.netty.util.internal.ThrowableUtil;

import java.io.File;
import java.io.IOException;
import java.nio.channels.Selector;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.Locale;

final class Native {
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(Native.class);

    static {
        Selector selector = null;
        try {
            // We call Selector.open() as this will under the hood cause IOUtil to be loaded.
            // This is a workaround for a possible classloader deadlock that could happen otherwise:
            //
            // See https://github.com/netty/netty/issues/10187
            selector = Selector.open();
        } catch (IOException ignore) {
            // Just ignore
        }

        // Preload all classes that will be used in the OnLoad(...) function of JNI to eliminate the possiblity of a
        // class-loader deadlock. This is a workaround for https://github.com/netty/netty/issues/11209.

        // This needs to match all the classes that are loaded via NETTY_JNI_UTIL_LOAD_CLASS or looked up via
        // NETTY_JNI_UTIL_FIND_CLASS.
        ClassInitializerUtil.tryLoadClasses(
                Native.class,
// ... (616 more lines)