8229921: Shenandoah: Make Traversal mode non-experimental

Reviewed-by: shade

Author: rkennke

src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalAggressiveHeuristics.cpp

@@ -53,7 +53,7 @@ ShenandoahTraversalAggressiveHeuristics::ShenandoahTraversalAggressiveHeuristics
 }
 
 bool ShenandoahTraversalAggressiveHeuristics::is_experimental() {
-  return true;
+  return false;
 }
 
 bool ShenandoahTraversalAggressiveHeuristics::is_diagnostic() {

src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalHeuristics.cpp

@@ -37,7 +37,7 @@ ShenandoahTraversalHeuristics::ShenandoahTraversalHeuristics() : ShenandoahHeuri
   _last_cset_select(0) {}
 
 bool ShenandoahTraversalHeuristics::is_experimental() {
-  return true;
+  return false;
 }
 
 bool ShenandoahTraversalHeuristics::is_diagnostic() {

test/hotspot/jtreg/gc/shenandoah/options/TestHeuristicsUnlock.java

@@ -48,7 +48,7 @@ public static void main(String[] args) throws Exception {
         testWith("-XX:ShenandoahGCHeuristics=static", Mode.PRODUCT);
         testWith("-XX:ShenandoahGCHeuristics=compact", Mode.PRODUCT);
 
-        testWith("-XX:ShenandoahGCMode=traversal", Mode.EXPERIMENTAL);
+        testWith("-XX:ShenandoahGCMode=traversal", Mode.PRODUCT);
 
         testWith("-XX:ShenandoahGCHeuristics=aggressive", Mode.DIAGNOSTIC);
         testWith("-XX:ShenandoahGCHeuristics=passive", Mode.DIAGNOSTIC);