unsafe-memcpy-for-java/java/net/lax1dude/unsafememcpy/UnsafeUtils.java

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