From 88cd3f6949fd12d680b38302f4b64113eb7830bf Mon Sep 17 00:00:00 2001
From: Chris Vest <mr.chrisvest@gmail.com>
Date: Thu, 27 Nov 2025 14:39:26 -0800
Subject: [PATCH] Make the PreciseLeakDetectorIT more stable on Semeru

---
 src/test/java/testkits/GarbageCreator.java | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/test/java/testkits/GarbageCreator.java b/src/test/java/testkits/GarbageCreator.java
index f88273b1..f76e458d 100644
--- a/src/test/java/testkits/GarbageCreator.java
+++ b/src/test/java/testkits/GarbageCreator.java
@@ -15,6 +15,7 @@
  */
 package testkits;
 
+import java.lang.invoke.VarHandle;
 import java.lang.management.GarbageCollectorMXBean;
 import java.lang.management.ManagementFactory;
 import java.lang.ref.PhantomReference;
@@ -78,6 +79,19 @@ public static void awaitReferenceProcessing() throws InterruptedException {
   }
 
   private static PhantomReference<Object> createLeakedObjectReference(ReferenceQueue<Object> queue) {
-    return new PhantomReference<>(new Object() /* intentionally leak */, queue);
+    return createLeakedObjectReference(queue, 10.0, 50.0);
+  }
+
+  private static PhantomReference<Object> createLeakedObjectReference(
+          ReferenceQueue<Object> queue, double threshold, double current) {
+    if (threshold > 20.0 * (current + ThreadLocalRandom.current().nextDouble())) {
+      Object object = new Object();
+      PhantomReference<Object> reference = new PhantomReference<>(object, queue);
+      VarHandle.fullFence();
+      object = null; // intentionally leak
+      VarHandle.fullFence();
+      return reference;
+    }
+    return createLeakedObjectReference(queue, threshold, current - 1.0);
   }
 }