src/hotspot/share/runtime/sharedRuntime.cpp

rev 52801 : Upstream/backport Shenandoah to JDK11u
* * *
[backport] 8237570: Shenandoah: cleanup uses of allocation/free threshold in static heuristics
Reviewed-by: rkennke

*** 2878,2887 ****
--- 2878,2905 ----
    // Lock and unlock a critical section to give the system a chance to block
    GCLocker::lock_critical(thread);
    GCLocker::unlock_critical(thread);
  JRT_END
  
+ JRT_LEAF(oopDesc*, SharedRuntime::pin_object(JavaThread* thread, oopDesc* obj))
+   assert(Universe::heap()->supports_object_pinning(), "Why we here?");
+   assert(UseShenandoahGC, "only supported in Shenandoah for now");
+   assert(obj != NULL, "Should not be null");
+   oop o(obj);
+   o = Universe::heap()->pin_object(thread, o);
+   assert(o != NULL, "Should not be null");
+   return o;
+ JRT_END
+ 
+ JRT_LEAF(void, SharedRuntime::unpin_object(JavaThread* thread, oopDesc* obj))
+   assert(Universe::heap()->supports_object_pinning(), "Why we here?");
+   assert(UseShenandoahGC, "only supported in Shenandoah for now");
+   assert(obj != NULL, "Should not be null");
+   oop o(obj);
+   Universe::heap()->unpin_object(thread, o);
+ JRT_END
+ 
  // -------------------------------------------------------------------------
  // Java-Java calling convention
  // (what you use when Java calls Java)
  
  //------------------------------name_for_receiver----------------------------------