8340389

Hi all,

  please review this fix to the phantom001 test to do much less garbage collections that inhibit passing the test.

Testing: gha, running the test for 1000 times with the problematic options

Thanks,
   Thomas

Author: tschatzl

test/hotspot/jtreg/vmTestbase/gc/gctests/PhantomReference/phantom001/phantom001.java

@@ -177,14 +177,14 @@ public void run() {
             // If referent is finalizable, provoke GCs and wait for finalization.
             if (type.equals("class")) {
                 progress("Waiting for finalization: " + type);
+                WhiteBox.getWhiteBox().fullGC();
                 for (int checks = 0; !finalized && !shouldTerminate(); ++checks) {
                     // There are scenarios where one WB.fillGC() isn't enough,
                     // but 10 iterations really ought to be sufficient.
                     if (checks > 10) {
                         fail("Waiting for finalization: " + type);
                         return;
                     }
-                    WhiteBox.getWhiteBox().fullGC();
                     // Give some time for finalizer to run.
                     try {
                         Thread.sleep(checks * 100);