add confined arena constructor with current thread

Author: madsodgaard

Samples/JExtractJNISampleApp/src/main/java/com/example/swift/HelloJava2SwiftJNI.java

@@ -41,7 +41,7 @@ static void examples() {
 
         MySwiftClass.method();
 
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass myClass = MySwiftClass.init(10, 5, arena);
             MySwiftClass myClass2 = MySwiftClass.init(arena);
 

Samples/JExtractJNISampleApp/src/test/java/com/example/swift/MySwiftClassTest.java

@@ -22,39 +22,39 @@
 public class MySwiftClassTest {
     @Test
     void init_noParameters() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(arena);
             assertNotNull(c);
         }
     }
 
     @Test
     void init_withParameters() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(1337, 42, arena);
             assertNotNull(c);
         }
     }
 
     @Test
     void sum() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
             assertEquals(30, c.sum());
         }
     }
 
     @Test
     void xMultiplied() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
             assertEquals(200, c.xMultiplied(10));
         }
     }
 
     @Test
     void throwingFunction() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
             Exception exception = assertThrows(Exception.class, () -> c.throwingFunction());
 
@@ -64,15 +64,15 @@ void throwingFunction() {
 
     @Test
     void constant() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
             assertEquals(100, c.getConstant());
         }
     }
 
     @Test
     void mutable() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
             assertEquals(0, c.getMutable());
             c.setMutable(42);
@@ -82,15 +82,15 @@ void mutable() {
 
     @Test
     void product() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
             assertEquals(200, c.getProduct());
         }
     }
 
     @Test
     void throwingVariable() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
 
             Exception exception = assertThrows(Exception.class, () -> c.getThrowingVariable());
@@ -101,7 +101,7 @@ void throwingVariable() {
 
     @Test
     void mutableDividedByTwo() {
-        try (var arena = new ConfinedSwiftMemorySession(Thread.currentThread())) {
+        try (var arena = new ConfinedSwiftMemorySession()) {
             MySwiftClass c = MySwiftClass.init(20, 10, arena);
             assertEquals(0, c.getMutableDividedByTwo());
             c.setMutable(20);

SwiftKitCore/src/main/java/org/swift/swiftkit/core/ConfinedSwiftMemorySession.java

@@ -28,6 +28,10 @@ public class ConfinedSwiftMemorySession implements ClosableSwiftArena {
 
     final ConfinedResourceList resources;
 
+    public ConfinedSwiftMemorySession() {
+        this(Thread.currentThread());
+    }
+
     public ConfinedSwiftMemorySession(Thread owner) {
         this.owner = owner;
         this.state = new AtomicInteger(ACTIVE);