Fix JFR-related UnsatisfiedLinkErrors.

Author: christianhaeubl

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/VMInspectionOptions.java

@@ -141,6 +141,12 @@ public static String getHeapDumpNotSupportedMessage() {
                         SubstrateOptionsParser.commandArgument(EnableMonitoringFeatures, MONITORING_HEAPDUMP_NAME) + "'.";
     }
 
+    @Fold
+    public static String getJfrNotSupportedMessage() {
+        return "JFR is only supported on Linux and MacOS for native binaries built with '" +
+                        SubstrateOptionsParser.commandArgument(EnableMonitoringFeatures, MONITORING_JFR_NAME) + "'.";
+    }
+
     private static Set<String> getEnabledMonitoringFeatures() {
         return new HashSet<>(EnableMonitoringFeatures.getValue().values());
     }

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jfr/JfrJavaEvents.java

@@ -35,22 +35,13 @@
  */
 public class JfrJavaEvents {
     private static final List<Class<? extends jdk.internal.event.Event>> EVENT_CLASSES = new ArrayList<>();
-    private static final List<Class<? extends jdk.jfr.Event>> JFR_EVENT_CLASSES = new ArrayList<>();
 
     @Platforms(Platform.HOSTED_ONLY.class)
-    @SuppressWarnings("unchecked")
     public static synchronized void registerEventClass(Class<? extends jdk.internal.event.Event> eventClass) {
         EVENT_CLASSES.add(eventClass);
-        if (jdk.jfr.Event.class.isAssignableFrom(eventClass)) {
-            JFR_EVENT_CLASSES.add((Class<? extends jdk.jfr.Event>) eventClass);
-        }
     }
 
     public static List<Class<? extends jdk.internal.event.Event>> getAllEventClasses() {
         return EVENT_CLASSES;
     }
-
-    public static List<Class<? extends jdk.jfr.Event>> getJfrEventClasses() {
-        return JFR_EVENT_CLASSES;
-    }
 }

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jfr/JfrJdkCompatibility.java

@@ -31,9 +31,12 @@
 import org.graalvm.nativeimage.Platform;
 import org.graalvm.nativeimage.Platforms;
 import org.graalvm.nativeimage.ProcessProperties;
+import org.graalvm.nativeimage.hosted.FieldValueTransformer;
 
 import com.oracle.svm.core.SubstrateOptions;
 import com.oracle.svm.core.annotate.Alias;
+import com.oracle.svm.core.annotate.RecomputeFieldValue;
+import com.oracle.svm.core.annotate.RecomputeFieldValue.Kind;
 import com.oracle.svm.core.annotate.Substitute;
 import com.oracle.svm.core.annotate.TargetClass;
 import com.oracle.svm.core.util.VMError;
@@ -71,14 +74,25 @@ public static void createNativeJFR() {
     }
 }
 
-@TargetClass(className = "jdk.jfr.internal.JVMSupport", onlyWith = HasJfrSupport.class)
+@TargetClass(className = "jdk.jfr.internal.JVMSupport")
 final class Target_jdk_jfr_internal_JVMSupport {
+    @Alias //
+    @RecomputeFieldValue(kind = Kind.Custom, declClass = JfrNotAvailableTransformer.class, isFinal = true) //
+    private static boolean notAvailable;
+
     @Substitute
     public static String makeFilename(Recording recording) {
         return JfrFilenameUtil.makeFilename(recording);
     }
 }
 
+final class JfrNotAvailableTransformer implements FieldValueTransformer {
+    @Override
+    public Object transform(Object receiver, Object originalValue) {
+        return !HasJfrSupport.get();
+    }
+}
+
 @TargetClass(className = "jdk.jfr.internal.util.ValueFormatter", onlyWith = HasJfrSupport.class)
 final class Target_jdk_jfr_internal_util_ValueFormatter {
     @Alias

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jfr/JfrRecorderThread.java

@@ -130,21 +130,13 @@ private void persistBuffers(JfrChunkWriter chunkWriter) {
         }
 
         if (chunkWriter.shouldRotateDisk()) {
-            Object chunkRotationMonitor = getChunkRotationMonitor();
+            Object chunkRotationMonitor = Target_jdk_jfr_internal_JVM.CHUNK_ROTATION_MONITOR;
             synchronized (chunkRotationMonitor) {
                 chunkRotationMonitor.notifyAll();
             }
         }
     }
 
-    private static Object getChunkRotationMonitor() {
-        if (HasChunkRotationMonitorField.get()) {
-            return Target_jdk_jfr_internal_JVM.CHUNK_ROTATION_MONITOR;
-        } else {
-            return Target_jdk_jfr_internal_JVM.FILE_DELTA_CHANGE;
-        }
-    }
-
     @Uninterruptible(reason = "Locking without transition requires that the whole critical section is uninterruptible.")
     private static void tryPersistBuffer(JfrChunkWriter chunkWriter, JfrBufferNode node) {
         if (JfrBufferNodeAccess.tryLock(node)) {