51 lines
2.1 KiB
Java
51 lines
2.1 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2023 ViaVersion and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.viaversion.viaversion.compatibility.unsafe;
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import com.viaversion.viaversion.compatibility.ForcefulFieldModifier;
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import java.lang.reflect.Field;
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import java.util.Objects;
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/**
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* @deprecated usage of sun.misc.Unsafe is discouraged and can stop working in future Java releases.
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*/
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@SuppressWarnings({
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"java:S1191", // SonarLint/-Qube/-Cloud: We need Unsafe for the modifier implementation.
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"java:S3011", // ^: We need to circumvent the access restrictions of fields.
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})
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@Deprecated
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public final class UnsafeBackedForcefulFieldModifier implements ForcefulFieldModifier {
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private final sun.misc.Unsafe unsafe;
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public UnsafeBackedForcefulFieldModifier() throws ReflectiveOperationException {
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final Field theUnsafeField = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
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theUnsafeField.setAccessible(true);
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this.unsafe = (sun.misc.Unsafe) theUnsafeField.get(null);
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}
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@Override
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public void setField(final Field field, final Object holder, final Object object) {
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Objects.requireNonNull(field, "field must not be null");
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final Object ufo = holder != null ? holder : this.unsafe.staticFieldBase(field);
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final long offset = holder != null ? this.unsafe.objectFieldOffset(field) : this.unsafe.staticFieldOffset(field);
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this.unsafe.putObject(ufo, offset, object);
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}
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}
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