test/hotspot/jtreg/gc/g1/humongousObjects/TestHumongousClassLoader.java

rev 59757 : Add whitebox support for deflating idle monitors including ObjectSynchronizer::request_deflate_idle_monitors(); drop ObjectSynchronizer::_is_special_deflation_requested flag, functions and uses; switch to ObjectSynchronizer::request_deflate_idle_monitors() as needed; _last_async_deflation_time_ns should be set at the end of async deflation;

@@ -201,10 +201,14 @@
         simpleClassLoader = null;
         simpleClassLoaderClass = null;
 
         gc.provoke();
 
+        boolean did_deflation = WB.deflateIdleMonitors();
+        Asserts.assertEQ(did_deflation, true,
+                         "deflateIdleMonitors() should have worked.");
+
         // Test checks
         Asserts.assertEquals(WB.isClassAlive(HUMONGOUS_CLASSLOADER_NAME), false,
                 String.format("Classloader class %s is loaded after we forget all references to it",
                         HUMONGOUS_CLASSLOADER_NAME));