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Added back org.lwjgl.MemoryUtil class

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This commit is contained in:
khanhduytran0 2022-08-28 14:33:37 +07:00
parent d150ef37af
commit 2c240425e0
6 changed files with 13 additions and 61 deletions
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60
jre_lwjgl3glfw/src/main/java/org/lwjgl/MemoryUtil.java.z → jre_lwjgl3glfw/src/main/java/org/lwjgl/MemoryUtil.java
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@ -46,58 +46,10 @@ public final class MemoryUtil {
private static final Charset ascii; private static final Charset ascii;
private static final Charset utf8; private static final Charset utf8;
private static final Charset utf16;
static { static {
ascii = Charset.forName("ISO-8859-1"); ascii = Charset.forName("ISO-8859-1");
utf8 = Charset.forName("UTF-8"); utf8 = Charset.forName("UTF-8");
utf16 = Charset.forName("UTF-16LE");
}
private static final Accessor memUtil;
static {
Accessor util;
try {
// Depends on java.nio.Buffer#address and sun.misc.Unsafe
util = loadAccessor("org.lwjgl.MemoryUtilSun$AccessorUnsafe");
} catch (Exception e0) {
try {
// Depends on java.nio.Buffer#address and sun.reflect.FieldAccessor
util = loadAccessor("org.lwjgl.MemoryUtilSun$AccessorReflectFast");
} catch (Exception e1) {
try {
// Depends on java.nio.Buffer#address
util = new AccessorReflect();
} catch (Exception e2) {
LWJGLUtil.log("Unsupported JVM detected, this will likely result in low performance. Please inform LWJGL developers.");
util = new AccessorJNI();
}
}
}
LWJGLUtil.log("MemoryUtil Accessor: " + util.getClass().getSimpleName());
memUtil = util;
/*
BENCHMARK RESULTS - Oracle Server VM:
Unsafe: 4ns
ReflectFast: 8ns
Reflect: 10ns
JNI: 82ns
BENCHMARK RESULTS - Oracle Client VM:
Unsafe: 5ns
ReflectFast: 81ns
Reflect: 85ns
JNI: 87ns
On non-Oracle VMs, Unsafe should be the fastest implementation as well. In the absence
of Unsafe, performance will depend on how reflection and JNI are implemented. For now
we'll go with what we see on the Oracle VM (that is, we'll prefer reflection over JNI).
*/
} }
private MemoryUtil() { private MemoryUtil() {
@ -110,13 +62,13 @@ public final class MemoryUtil {
* *
* @return the memory address * @return the memory address
*/ */
public static long getAddress0(Buffer buffer) { return memUtil.getAddress(buffer); } public static long getAddress0(Buffer buffer) { return org.lwjgl.system.MemoryUtil.memAddress0(buffer); }
public static long getAddress0Safe(Buffer buffer) { return buffer == null ? 0L : memUtil.getAddress(buffer); } public static long getAddress0Safe(Buffer buffer) { return buffer == null ? 0L : getAddress0(buffer); }
public static long getAddress0(PointerBuffer buffer) { return memUtil.getAddress(buffer.getBuffer()); } public static long getAddress0(PointerBuffer buffer) { return getAddress0(buffer.getBuffer()); }
public static long getAddress0Safe(PointerBuffer buffer) { return buffer == null ? 0L : memUtil.getAddress(buffer.getBuffer()); } public static long getAddress0Safe(PointerBuffer buffer) { return buffer == null ? 0L : getAddress0(buffer.getBuffer()); }
// --- [ API utilities ] --- // --- [ API utilities ] ---
@ -225,7 +177,7 @@ public final class MemoryUtil {
* @return the encoded text * @return the encoded text
*/ */
public static ByteBuffer encodeUTF16(final CharSequence text) { public static ByteBuffer encodeUTF16(final CharSequence text) {
return encode(text, utf16); return org.lwjgl.system.MemoryUtil.memUTF16(text);
} }
/** /**
@ -295,7 +247,7 @@ public final class MemoryUtil {
} }
public static String decodeUTF16(final ByteBuffer buffer) { public static String decodeUTF16(final ByteBuffer buffer) {
return decode(buffer, utf16); return org.lwjgl.system.MemoryUtil.memUTF16(buffer);
} }
private static String decode(final ByteBuffer buffer, final Charset charset) { private static String decode(final ByteBuffer buffer, final Charset charset) {

3
jre_lwjgl3glfw/src/main/java/org/lwjgl/openal/AL.java
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@ -4,7 +4,8 @@
*/ */
package org.lwjgl.openal; package org.lwjgl.openal;
import org.lwjgl.*; import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLException;
import org.lwjgl.system.*; import org.lwjgl.system.*;
import javax.annotation.*; import javax.annotation.*;

3
jre_lwjgl3glfw/src/main/java/org/lwjgl/opengl/ARBShaderObjects.java
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@ -9,8 +9,7 @@ import javax.annotation.*;
import java.nio.*; import java.nio.*;
import org.lwjgl.*; import org.lwjgl.PointerBuffer;
import org.lwjgl.system.*; import org.lwjgl.system.*;
import static org.lwjgl.system.Checks.*; import static org.lwjgl.system.Checks.*;

2
jre_lwjgl3glfw/src/main/java/org/lwjgl/opengl/GL11.java
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@ -9,7 +9,7 @@ import javax.annotation.*;
import java.nio.*; import java.nio.*;
import org.lwjgl.*; import org.lwjgl.PointerBuffer;
import org.lwjgl.system.*; import org.lwjgl.system.*;

3
jre_lwjgl3glfw/src/main/java/org/lwjgl/opengl/GL15.java
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@ -9,8 +9,7 @@ import javax.annotation.*;
import java.nio.*; import java.nio.*;
import org.lwjgl.*; import org.lwjgl.PointerBuffer;
import org.lwjgl.system.*; import org.lwjgl.system.*;
import static org.lwjgl.system.Checks.*; import static org.lwjgl.system.Checks.*;

3
jre_lwjgl3glfw/src/main/java/org/lwjgl/opengl/GL20.java
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@ -9,7 +9,8 @@ import javax.annotation.*;
import java.nio.*; import java.nio.*;
import org.lwjgl.*; import org.lwjgl.BufferUtils;
import org.lwjgl.PointerBuffer;
import org.lwjgl.system.*; import org.lwjgl.system.*;