src/hotspot/cpu/sparc/vm_version_sparc.hpp

rev 52689 : 8213224: Move code related to GC threads calculation out of AdaptiveSizePolicy
Summary: Consolidate code related to GC threads calculation into a single class

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -363,10 +363,14 @@
   // FIXME: Removed broken test on sun4v (always false when invoked prior to the
   //        proper capability setup), thus always returning 2. Still need to fix
   //        this properly in order to enable complete page size support.
   static uint page_size_count() { return 2; }
 
-  // Calculates the number of parallel threads
-  static unsigned int calc_parallel_worker_threads();
+  // Override default denominator for ParallelGCThreads.
+  //
+  // FIXME: Simply checking the processor family is insufficient.
+  static uint parallel_worker_threads_denominator() {
+    return is_post_niagara() ? 16 : 8;
+  }
 };
 
 #endif // CPU_SPARC_VM_VM_VERSION_SPARC_HPP