Cleanup get java version & SIMD util

- Use modern API which introduced since Java 10 to get java major version
- Remove useless fields in SIMD util, Java 21+ supports SIMD.

leaf-api/paper-patches/features/0003-SIMD-support.patch

@@ -14,10 +14,10 @@ Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
 
 diff --git a/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..90d87374e9dddd79aeca3e05f9cd6c82eb3aad27
+index 0000000000000000000000000000000000000000..8d614483b8011d47e88ace3da28e072d1febaef7
 --- /dev/null
 +++ b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDChecker.java
-@@ -0,0 +1,48 @@
+@@ -0,0 +1,41 @@
 +// Gale - Pufferfish - SIMD support
 +
 +package gg.pufferfish.pufferfish.simd;
@@ -38,13 +38,6 @@ index 0000000000000000000000000000000000000000..90d87374e9dddd79aeca3e05f9cd6c82
 +        }
 +        SIMDDetection.setInitialized();
 +        try {
-+            int javaVersion = SIMDDetection.getJavaVersion();
-+            if (javaVersion < 17) {
-+                return;
-+            }
-+            SIMDDetection.supportingJavaVersion = true;
-+            SIMDDetection.testRunStarted = true;
-+
 +            VectorSpecies<Integer> ISPEC = IntVector.SPECIES_PREFERRED;
 +            VectorSpecies<Float> FSPEC = FloatVector.SPECIES_PREFERRED;
 +
@@ -68,10 +61,10 @@ index 0000000000000000000000000000000000000000..90d87374e9dddd79aeca3e05f9cd6c82
 +}
 diff --git a/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..b19b6bc85cb08a49f064a4ecb88af858a9a22fe7
+index 0000000000000000000000000000000000000000..df3ef7bface99072b5bfbcdc5bf653a01a9c798c
 --- /dev/null
 +++ b/src/main/java/gg/pufferfish/pufferfish/simd/SIMDDetection.java
-@@ -0,0 +1,78 @@
+@@ -0,0 +1,59 @@
 +// Gale - Pufferfish - SIMD support
 +
 +package gg.pufferfish.pufferfish.simd;
@@ -83,8 +76,6 @@ index 0000000000000000000000000000000000000000..b19b6bc85cb08a49f064a4ecb88af858
 +    static int floatVectorBitSize;
 +    static int intElementSize;
 +    static int floatElementSize;
-+    static boolean supportingJavaVersion;
-+    static boolean testRunStarted;
 +    static boolean testRunCompleted;
 +    static boolean unsupportingLaneSize;
 +    static boolean isEnabled;
@@ -120,10 +111,6 @@ index 0000000000000000000000000000000000000000..b19b6bc85cb08a49f064a4ecb88af858
 +        return floatElementSize;
 +    }
 +
-+    public static boolean supportingJavaVersion() {
-+        return supportingJavaVersion;
-+    }
-+
 +    public static boolean testRunCompleted() {
 +        return testRunCompleted;
 +    }
@@ -136,17 +123,4 @@ index 0000000000000000000000000000000000000000..b19b6bc85cb08a49f064a4ecb88af858
 +        return isEnabled;
 +    }
 +
-+    public static int getJavaVersion() {
-+        // https://stackoverflow.com/a/2591122
-+        String version = System.getProperty("java.version");
-+        if(version.startsWith("1.")) {
-+            version = version.substring(2, 3);
-+        } else {
-+            int dot = version.indexOf(".");
-+            if(dot != -1) { version = version.substring(0, dot); }
-+        }
-+        version = version.split("-")[0]; // Azul is stupid
-+        return Integer.parseInt(version);
-+    }
-+
 +}

leaf-server/paper-patches/features/0012-SIMD-support.patch

@@ -13,10 +13,10 @@ As part of: Pufferfish (https://github.com/pufferfish-gg/Pufferfish)
 Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
 
 diff --git a/src/main/java/com/destroystokyo/paper/Metrics.java b/src/main/java/com/destroystokyo/paper/Metrics.java
-index c9c7590a5635d966a0ca262ed5985714d9e66598..119d26ada18ad1451b893657a1c9fa3bc2be6be4 100644
+index c9c7590a5635d966a0ca262ed5985714d9e66598..c0255b4493cfcdd4b89f4002b731adaf57422f61 100644
 --- a/src/main/java/com/destroystokyo/paper/Metrics.java
 +++ b/src/main/java/com/destroystokyo/paper/Metrics.java
-@@ -936,6 +936,46 @@ public class Metrics {
+@@ -936,6 +936,40 @@ public class Metrics {
                  metrics.addCustomChart(new Metrics.DrilldownPie("gale_semantic_version", () -> semanticVersionMap));
                  // Gale end - semantic version - include in metrics
  
@@ -36,13 +36,7 @@ index c9c7590a5635d966a0ca262ed5985714d9e66598..119d26ada18ad1451b893657a1c9fa3b
 +                        if (isEnabled) {
 +                            details = "int " + gg.pufferfish.pufferfish.simd.SIMDDetection.intVectorBitSize() + "*" + gg.pufferfish.pufferfish.simd.SIMDDetection.intElementSize() + ", float " + gg.pufferfish.pufferfish.simd.SIMDDetection.floatVectorBitSize() + "*" + gg.pufferfish.pufferfish.simd.SIMDDetection.floatElementSize();
 +                        } else {
-+                            if (!gg.pufferfish.pufferfish.simd.SIMDDetection.supportingJavaVersion()) {
++                            if (!gg.pufferfish.pufferfish.simd.SIMDDetection.testRunCompleted()) {
-+                                details = "unsupported Java";
-+                                try {
-+                                    var javaVersion = gg.pufferfish.pufferfish.simd.SIMDDetection.getJavaVersion();
-+                                    details += " (" + javaVersion + ")";
-+                                } catch (Throwable ignored) {}
-+                            } else if (!gg.pufferfish.pufferfish.simd.SIMDDetection.testRunCompleted()) {
 +                                details = "test failed";
 +                            } else if (gg.pufferfish.pufferfish.simd.SIMDDetection.unsupportingLaneSize()) {
 +                                details = "no supporting lane size";

leaf-server/paper-patches/features/0024-Virtual-thread-support.patch

@@ -7,10 +7,10 @@ License: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
 Gale - https://galemc.org
 
 diff --git a/src/main/java/com/destroystokyo/paper/Metrics.java b/src/main/java/com/destroystokyo/paper/Metrics.java
-index 119d26ada18ad1451b893657a1c9fa3bc2be6be4..8685b42dd00c964b0fbf42334cd6d23f187b2658 100644
+index c0255b4493cfcdd4b89f4002b731adaf57422f61..4e7adf20887c527d2a011040d9d616f6065c5726 100644
 --- a/src/main/java/com/destroystokyo/paper/Metrics.java
 +++ b/src/main/java/com/destroystokyo/paper/Metrics.java
-@@ -976,6 +976,22 @@ public class Metrics {
+@@ -970,6 +970,19 @@ public class Metrics {
                  }));
                  // Gale end - SIMD support - include in metrics
  
@@ -19,12 +19,9 @@ index 119d26ada18ad1451b893657a1c9fa3bc2be6be4..8685b42dd00c964b0fbf42334cd6d23f
 +                {
 +                    Map<String, Integer> entry = new HashMap<>(2);
 +                    boolean isSupported = org.galemc.gale.virtualthread.VirtualThreadService.isSupported();
-+                    try {
++                    int javaMajorVersion = Runtime.version().feature();
-+                        int javaMajorVersion = org.galemc.gale.virtualthread.VirtualThreadService.getJavaMajorVersion();
++                    entry.put(isSupported + " (Java " + javaMajorVersion + ")", 1);
-+                        entry.put(isSupported + " (Java " + javaMajorVersion + ")", 1);
++
-+                    } catch (Exception ignored) {
-+                        entry.put(String.valueOf(isSupported), 1);
-+                    }
 +                    virtualThreadSupportMap.put(String.valueOf(isSupported), entry);
 +                }
 +                metrics.addCustomChart(new Metrics.DrilldownPie("virtual_thread_support", () -> virtualThreadSupportMap));

leaf-server/src/main/java/org/dreeam/leaf/LeafBootstrap.java

@@ -5,7 +5,7 @@ import joptsimple.OptionSet;
 
 public class LeafBootstrap {
 
-    public static final boolean enableFMA = Boolean.getBoolean("Leaf.enableFMA");
+    public static final boolean enableFMA = Boolean.getBoolean("Leaf.enableFMA"); // Leaf - Optimize Entity distanceTo
 
     public static void boot(final OptionSet options) {
         //runPreBootTasks();

leaf-server/src/main/java/org/galemc/gale/virtualthread/VirtualThreadService.java

@@ -88,17 +88,4 @@ public sealed abstract class VirtualThreadService permits ReflectionVirtualThrea
      * even without any feature preview flags.
      */
     public static final int minimumJavaMajorVersionWithoutFeaturePreview = 21;
-
-    public static int getJavaMajorVersion() {
-        var version = System.getProperty("java.version");
-        if (version.startsWith("1.")) {
-            return version.charAt(2) - '0';
-        }
-        if (version.contains("-")) {
-            version = version.substring(0, version.indexOf("-"));
-        }
-
-        int dotIndex = version.indexOf(".");
-        return Integer.parseInt(dotIndex == -1 ? version : version.substring(0, dotIndex));
-    }
 }