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1   /*
2    * Copyright 2024 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.channel.uring;
17  
18  /**
19   * This class is necessary to break the following cyclic dependency:
20   * <ol>
21   * <li>JNI_OnLoad</li>
22   * <li>JNI Calls FindClass because RegisterNatives (used to register JNI methods) requires a class</li>
23   * <li>FindClass loads the class, but static members variables of that class attempt to call a JNI method which has not
24   * yet been registered.</li>
25   * <li>java.lang.UnsatisfiedLinkError is thrown because native method has not yet been registered.</li>
26   * </ol>
27   * Static members which call JNI methods must not be declared in this class!
28   */
29  final class NativeStaticallyReferencedJniMethods {
30  
31      private NativeStaticallyReferencedJniMethods() { }
32  
33      static native int sockNonblock();
34      static native int sockCloexec();
35      static native int afInet();
36      static native int afInet6();
37      static native int afUnix();
38      static native int sizeofSockaddrIn();
39      static native int sizeofSockaddrIn6();
40      static native int pageSize();
41      static native int sockaddrInOffsetofSinFamily();
42      static native int sockaddrInOffsetofSinPort();
43      static native int sockaddrInOffsetofSinAddr();
44      static native int inAddressOffsetofSAddr();
45      static native int sockaddrIn6OffsetofSin6Family();
46      static native int sockaddrIn6OffsetofSin6Port();
47      static native int sockaddrIn6OffsetofSin6Flowinfo();
48      static native int sockaddrIn6OffsetofSin6Addr();
49      static native int sockaddrIn6OffsetofSin6ScopeId();
50      static native int in6AddressOffsetofS6Addr();
51      static native int sizeofSockaddrStorage();
52      static native int sizeofSockaddrUn();
53      static native int sockaddrUnOffsetofSunFamily();
54      static native int sockaddrUnOffsetofSunPath();
55      static native int maxSunPathLen();
56      static native int sizeofSizeT();
57      static native int sizeofIovec();
58      static native int iovecOffsetofIovBase();
59      static native int iovecOffsetofIovLen();
60      static native int sizeofMsghdr();
61      static native int msghdrOffsetofMsgName();
62      static native int msghdrOffsetofMsgNamelen();
63      static native int msghdrOffsetofMsgIov();
64      static native int msghdrOffsetofMsgIovlen();
65      static native int msghdrOffsetofMsgControl();
66      static native int msghdrOffsetofMsgControllen();
67      static native int msghdrOffsetofMsgFlags();
68      static native int etime();
69      static native int ecanceled();
70      static native int enobufs();
71      static native int pollin();
72      static native int pollout();
73      static native int pollrdhup();
74      static native int ioringEnterGetevents();
75      static native int iosqeAsync();
76      static native int iosqeLink();
77      static native int iosqeDrain();
78      static native int msgDontwait();
79      static native int iosqeBufferSelect();
80      static native int msgFastopen();
81      static native int cmsgSpace();
82      static native int cmsgSpaceForFd();
83      static native int cmsgLen();
84      static native int cmsgLenForFd();
85      static native int msgControlLenForFd();
86      static native int solUdp();
87      static native int solSocket();
88      static native int udpSegment();
89      static native int scmRights();
90      static native int cmsghdrOffsetofCmsgLen();
91      static native int cmsghdrOffsetofCmsgLevel();
92      static native int cmsghdrOffsetofCmsgType();
93      static native int ioUringBufferRingOffsetTail();
94      static native int ioUringBufferOffsetAddr();
95      static native int ioUringBufferOffsetLen();
96      static native int ioUringBufferOffsetBid();
97      static native int sizeofIoUringBuf();
98      static native int tcpFastopenMode();
99  }