diff --git a/runtime/thread.h b/runtime/thread.h
index 3123c71..2218b5a 100644
--- a/runtime/thread.h
+++ b/runtime/thread.h
@@ -1097,6 +1097,13 @@
     return debug_disallow_read_barrier_;
   }
 
+  static bool IsSensitiveThread() {
+    if (is_sensitive_thread_hook_ != nullptr) {
+      return (*is_sensitive_thread_hook_)();
+    }
+    return false;
+  }
+
  private:
   explicit Thread(bool daemon);
   ~Thread() REQUIRES(!Locks::mutator_lock_, !Locks::thread_suspend_count_lock_);
@@ -1172,6 +1179,10 @@
   ALWAYS_INLINE void PassActiveSuspendBarriers()
       REQUIRES(!Locks::thread_suspend_count_lock_, !Roles::uninterruptible_);
 
+  static void SetSensitiveThreadHook(bool (*is_sensitive_thread_hook)()) {
+    is_sensitive_thread_hook_ = is_sensitive_thread_hook;
+  }
+
   // 32 bits of atomically changed state and flags. Keeping as 32 bits allows and atomic CAS to
   // change from being Suspended to Runnable without a suspend request occurring.
   union PACKED(4) StateAndFlags {
@@ -1214,6 +1225,10 @@
   // their suspend count is > 0.
   static ConditionVariable* resume_cond_ GUARDED_BY(Locks::thread_suspend_count_lock_);
 
+  // Hook passed by framework which returns true
+  // when StrictMode events are traced for the current thread.
+  static bool (*is_sensitive_thread_hook_)();
+
   /***********************************************************************************************/
   // Thread local storage. Fields are grouped by size to enable 32 <-> 64 searching to account for
   // pointer size differences. To encourage shorter encoding, more frequently used values appear