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diff src/cpu/sparc/vm/vm_version_sparc.hpp @ 10:28372612af5e

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6362677: Change parallel GC collector default number of parallel GC threads. Summary: Use the same default number of GC threads as used by ParNewGC and ConcMarkSweepGC (i.e., the 5/8th rule). Reviewed-by: ysr, tonyp
author jmasa
date Fri, 22 Feb 2008 17:17:14 -0800
parents a61af66fc99e
children d1605aabd0a1
line wrap: on
line diff
--- a/src/cpu/sparc/vm/vm_version_sparc.hpp	Thu Feb 21 11:03:54 2008 -0800
+++ b/src/cpu/sparc/vm/vm_version_sparc.hpp	Fri Feb 22 17:17:14 2008 -0800
@@ -64,6 +64,11 @@
 
   static bool is_niagara1(int features) { return (features & niagara1_m) == niagara1_m; }
 
+  static int maximum_niagara1_processor_count() { return 32; }
+  // Returns true if the platform is in the niagara line and
+  // newer than the niagara1.
+  static bool is_niagara1_plus();
+
 public:
   // Initialization
   static void initialize();
@@ -129,4 +134,7 @@
 
   // Override the Abstract_VM_Version implementation.
   static uint page_size_count() { return is_sun4v() ? 4 : 2; }
+
+  // Calculates the number of parallel threads
+  static unsigned int calc_parallel_worker_threads();
 };