mirror of
https://github.com/lax1dude/unsafe-memcpy-for-java.git
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91 lines
3.0 KiB
Java
91 lines
3.0 KiB
Java
/*
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* Copyright (c) 2024 lax1dude
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package net.lax1dude.unsafememcpy;
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import java.nio.Buffer;
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import java.nio.ByteBuffer;
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public class UnsafeUtils {
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private static boolean hasLoadedNatives = false;
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static {
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loadNatives();
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}
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public static void loadNatives() {
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if(!hasLoadedNatives) {
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hasLoadedNatives = true;
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System.loadLibrary("UnsafeMemcpy");
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int major = getVersionMajor();
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int minor = getVersionMinor();
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if(major != 1 || minor < 0) {
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throw new UnsatisfiedLinkError("Invalid UnsafeMemcpy native library version: " + major + "." + minor + " (expected: 1.0)");
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}
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}
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}
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public static native int getVersionMajor();
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public static native int getVersionMinor();
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public static native ByteBuffer makeDirectBuffer(long address, int size);
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public static native ByteBuffer makeDirectBuffer(long address, long size);
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public static native long getAddress(Buffer buffer);
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public static native byte getMemByte(long address);
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public static native short getMemShort(long address);
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public static native char getMemChar(long address);
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public static native int getMemInt(long address);
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public static native long getMemLong(long address);
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public static native double getMemDouble(long address);
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public static native float getMemFloat(long address);
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public static native void setMemByte(long address, byte value);
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public static native void setMemShort(long address, short value);
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public static native void setMemChar(long address, char value);
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public static native void setMemInt(long address, int value);
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public static native void setMemLong(long address, long value);
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public static native void setMemDouble(long address, double value);
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public static native void setMemFloat(long address, float value);
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}
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