diff a/test/hotspot/jtreg/serviceability/jvmti/valhalla/SampledObjectAllocValue/libSampledObjectAllocValue.cpp b/test/hotspot/jtreg/serviceability/jvmti/valhalla/SampledObjectAllocValue/libSampledObjectAllocValue.cpp
--- /dev/null
+++ b/test/hotspot/jtreg/serviceability/jvmti/valhalla/SampledObjectAllocValue/libSampledObjectAllocValue.cpp
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include "jvmti.h"
+#include "jvmti_common.hpp"
+
+#include <atomic>
+
+extern "C" {
+
+static std::atomic<int> events_counter(0);
+static jvmtiEnv* jvmti;
+static jclass expected_class;
+
+static bool
+is_test_class(jvmtiEnv* jvmti, JNIEnv* jni, jclass cls) {
+  char* sig = nullptr;
+  check_jvmti_error(jvmti->GetClassSignature(cls, &sig, nullptr), "GetClassSignature");
+
+  LOG("Object class: %s\n", sig);
+  jvmti->Deallocate((unsigned char *)sig);
+  bool res = (jni->IsSameObject(cls, expected_class) == JNI_TRUE);
+  return res;
+}
+
+JNIEXPORT void JNICALL
+Java_SampledObjectAllocValue_enableEvents(JNIEnv* jni, jclass klass, jthread thread, jclass tested_class) {
+  if (events_counter != 0) {
+    fatal(jni, "SampledObjectAlloc events counter should be zero");
+  }
+  LOG("enableEvents: events_counter: %d\n", events_counter.load());
+
+  expected_class = (jclass)jni->NewGlobalRef(tested_class);
+  jvmtiError err = jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_SAMPLED_OBJECT_ALLOC, thread);
+  check_jvmti_error(err, "SetEventNotificationMode for SAMPLED_OBJECT_ALLOC");
+}
+
+JNIEXPORT void JNICALL
+SampledObjectAlloc(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread, jobject object, jclass klass, jlong size) {
+  if (klass == nullptr) {
+    fatal(jni, "klass in SampledObjectAlloc callback is not expected to be null");
+  }
+  if (!is_test_class(jvmti, jni, klass)) {
+    return; // interested in tested class only
+  }
+  if (size == 0L) {
+    fatal(jni, "size in SampledObjectAlloc callback is not expected to be 0");
+  }
+  if (object != nullptr) {
+    fatal(jni, "object in SampledObjectAlloc callback is expected to be null for value object allocations");
+  }
+  events_counter++;
+  LOG("SampledObjectAlloc: events_counter: %d\n", events_counter.load());
+}
+
+void JNICALL
+VMDeath(jvmtiEnv* jvmti, JNIEnv* jni) {
+  jvmtiError err = jvmti->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_SAMPLED_OBJECT_ALLOC, nullptr);
+  check_jvmti_error(err, "SetEventNotificationMode for SAMPLED_OBJECT_ALLOC");
+
+  if (events_counter == 0) {
+    fatal(jni, "SampledObjectAlloc events counter shouldn't be zero");
+  }
+  LOG("VMDeath: events_counter: %d\n", events_counter.load());
+}
+
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+  jvmtiCapabilities caps;
+  jvmtiEventCallbacks callbacks;
+  jvmtiError err;
+  jint res;
+
+  LOG("Agent_Initialize\n");
+  res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_9);
+  if (res != JNI_OK || jvmti == nullptr) {
+    LOG("Wrong result of a valid call to GetEnv!\n");
+    return JNI_ERR;
+  }
+
+  memset(&caps, 0, sizeof(caps));
+  caps.can_generate_sampled_object_alloc_events = 1;
+  if (jvmti->AddCapabilities(&caps) != JVMTI_ERROR_NONE) {
+    return JNI_ERR;
+  }
+
+  memset(&callbacks, 0, sizeof(callbacks));
+  callbacks.VMDeath = &VMDeath;
+  callbacks.SampledObjectAlloc = &SampledObjectAlloc;
+
+  err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
+  check_jvmti_error(err, "SetEventCallbacks");
+
+  // Interval should be small enough to triggger sampling event.
+  err = jvmti->SetHeapSamplingInterval(100);
+  check_jvmti_error(err, "SetHeapSamplingInterval");
+
+  err = jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, nullptr);
+  check_jvmti_error(err, "SetEventNotificationMode for VM_DEATH");
+
+  return JNI_OK;
+}
+
+JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
+  return Agent_Initialize(jvm, options, reserved);
+}
+
+JNIEXPORT jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {
+  return Agent_Initialize(jvm, options, reserved);
+}
+}