eb1c8e4991
Motivation: fix checkstyle errors and many classes are unnecessarily public Modification: -fixed maven checkstyle errors -using package-private and final classes Result: better code quality
76 lines
2.6 KiB
Java
76 lines
2.6 KiB
Java
/*
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* Copyright 2020 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.uring;
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import io.netty.channel.unix.Socket;
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import io.netty.util.internal.NativeLibraryLoader;
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import io.netty.util.internal.PlatformDependent;
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import io.netty.util.internal.SystemPropertyUtil;
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import io.netty.util.internal.ThrowableUtil;
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import java.util.Locale;
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final class Native {
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private static final int DEFAULT_RING_SIZE = SystemPropertyUtil.getInt("io.netty.uring.ringSize", 32);
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static {
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loadNativeLibrary();
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Socket.initialize();
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}
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public static RingBuffer createRingBuffer(int ringSize) {
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//Todo throw Exception if it's null
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return ioUringSetup(ringSize);
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}
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public static RingBuffer createRingBuffer() {
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//Todo throw Exception if it's null
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return ioUringSetup(DEFAULT_RING_SIZE);
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}
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private static native RingBuffer ioUringSetup(int entries);
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public static native int ioUringEnter(int ringFd, int toSubmit, int minComplete, int flags);
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// for testing(it is only temporary)
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public static native int createFile();
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private Native() {
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// utility
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}
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// From io_uring native library
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private static void loadNativeLibrary() {
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String name = PlatformDependent.normalizedOs().toLowerCase(Locale.UK).trim();
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if (!name.startsWith("linux")) {
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throw new IllegalStateException("Only supported on Linux");
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}
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String staticLibName = "netty_transport_native_io_uring";
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String sharedLibName = staticLibName + '_' + PlatformDependent.normalizedArch();
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ClassLoader cl = PlatformDependent.getClassLoader(Native.class);
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try {
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NativeLibraryLoader.load(sharedLibName, cl);
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} catch (UnsatisfiedLinkError e1) {
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try {
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NativeLibraryLoader.load(staticLibName, cl);
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System.out.println("Failed to load io_uring");
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} catch (UnsatisfiedLinkError e2) {
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ThrowableUtil.addSuppressed(e1, e2);
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throw e1;
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}
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}
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}
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}
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