Do not use Unsafe on Java 22+

.github/workflows/build.yml

@@ -1,6 +1,6 @@
 name: SmallRye Build
 env:
-  MAVEN_VERSION: 3.8.3
+  MAVEN_VERSION: 3.9.9
   IO_TAKARI_MAVEN_WRAPPER_VERSION: 0.7.7
 
 on:
@@ -42,13 +42,14 @@ jobs:
           java-version: |
             17
             21
+            23
           cache: 'maven'
           cache-dependency-path: '**/pom.xml'
 
       - name: build with maven
         run: |
           mvn -q -N "io.takari:maven:${{env.IO_TAKARI_MAVEN_WRAPPER_VERSION}}:wrapper" "-Dmaven=${{env.MAVEN_VERSION}}"
-          ./mvnw -B -ntp formatter:validate verify javadoc:javadoc --file pom.xml "-Dexpected-cpu=x64,aarch64" "-Djava17.home=${{env.JAVA_HOME_17_X64}}${{env.JAVA_HOME_17_ARM64}}"
+          ./mvnw -B -ntp formatter:validate verify javadoc:javadoc --file pom.xml "-Dexpected-cpu=x64,aarch64" "-Djava17.home=${{env.JAVA_HOME_17_X64}}${{env.JAVA_HOME_17_ARM64}}" "-Djava21.home=${{env.JAVA_HOME_21_X64}}${{env.JAVA_HOME_21_ARM64}}"
 
   quality:
     needs: [ build ]
@@ -62,7 +63,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: 17
+          java-version: 21
           cache: 'maven'
           cache-dependency-path: '**/pom.xml'
 
@@ -74,7 +75,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 17
+          java-version: 21
 
       - name: sonar
         run: ./mvnw -B -ntp sonar:sonar -Dsonar.projectKey=smallrye_smallrye-common -Dsonar.token=${{secrets.SONAR_TOKEN}}

cpu/pom.xml

@@ -34,6 +34,19 @@
                     </systemPropertyVariables>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>net.revelc.code</groupId>
+                <artifactId>impsort-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>sort-imports-java22</id>
+                        <goals>
+                            <goal>sort</goal>
+                        </goals>
+                        <phase>none</phase>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 

cpu/src/main/java/io/smallrye/common/cpu/CPU.java

@@ -10,8 +10,6 @@
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import sun.misc.Unsafe;
-
 /**
  * Enumerated type for CPU types.
  */
@@ -185,8 +183,7 @@ public static CPU host() {
 
     private static CPU check(CPU cpu) {
         ByteOrder no = ByteOrder.nativeOrder();
-        // todo: in 22+, bytes = (int) ValueLayout.ADDRESS.byteSize();
-        int bytes = Unsafe.ADDRESS_SIZE;
+        int bytes = JDK22Specific.ADDRESS_SIZE;
         if (cpu.pointerSizeBytes() == bytes && cpu.nativeByteOrder() == no) {
             // OK
             return cpu;

cpu/src/main/java/io/smallrye/common/cpu/JDK22Specific.java

@@ -0,0 +1,7 @@
+package io.smallrye.common.cpu;
+
+import sun.misc.Unsafe;
+
+final class JDK22Specific {
+    static final int ADDRESS_SIZE = Unsafe.ADDRESS_SIZE;
+}

cpu/src/main/java/module-info.java

@@ -1,4 +1,4 @@
-module smallrye.common.cpu {
+module io.smallrye.common.cpu {
     requires jdk.unsupported;
 
     exports io.smallrye.common.cpu;

cpu/src/main/java22/io/smallrye/common/cpu/JDK22Specific.java

@@ -0,0 +1,7 @@
+package io.smallrye.common.cpu;
+
+import java.lang.foreign.ValueLayout;
+
+final class JDK22Specific {
+    static final int ADDRESS_SIZE = (int) ValueLayout.ADDRESS.byteSize();
+}

cpu/src/main/java22/module-info.java

@@ -0,0 +1,3 @@
+module io.smallrye.common.cpu {
+    exports io.smallrye.common.cpu;
+}

pom.xml

@@ -169,6 +169,18 @@
             </plugins>
         </pluginManagement>
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-enforcer-plugin</artifactId>
+                <version>3.5.0</version>
+                <configuration>
+                    <rules>
+                      <requireJavaVersion>
+                        <version>22</version>
+                      </requireJavaVersion>
+                    </rules>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>io.sundr</groupId>
                 <artifactId>sundr-maven-plugin</artifactId>