31 
  32 // Set the default values for platform dependent flags used by the
  33 // runtime system.  See globals.hpp for details of what they do.
  34 
  35 define_pd_global(bool,  ConvertSleepToYield,  true);
  36 define_pd_global(bool,  ShareVtableStubs,     true);
  37 define_pd_global(bool,  NeedsDeoptSuspend,    false);
  38 
  39 define_pd_global(bool,  ImplicitNullChecks,   true);
  40 define_pd_global(bool,  TrapBasedNullChecks,  false);
  41 define_pd_global(bool,  UncommonNullCast,     true);
  42 
  43 define_pd_global(intx,  CodeEntryAlignment,   32);
  44 define_pd_global(intx,  OptoLoopAlignment,    16);
  45 define_pd_global(intx,  InlineFrequencyCount, 100);
  46 define_pd_global(intx,  InlineSmallCode,      1000 );
  47 
  48 #define DEFAULT_STACK_YELLOW_PAGES (2)
  49 #define DEFAULT_STACK_RED_PAGES (1)
  50 #define DEFAULT_STACK_SHADOW_PAGES (5 LP64_ONLY(+1) DEBUG_ONLY(+3))

  51 
  52 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
  53 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
  54 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES

  55 
  56 define_pd_global(intx,  StackYellowPages,     DEFAULT_STACK_YELLOW_PAGES);
  57 define_pd_global(intx,  StackRedPages,        DEFAULT_STACK_RED_PAGES);
  58 define_pd_global(intx,  StackShadowPages,     DEFAULT_STACK_SHADOW_PAGES);

  59 
  60 define_pd_global(bool,  RewriteBytecodes,     true);
  61 define_pd_global(bool,  RewriteFrequentPairs, true);
  62 
  63 define_pd_global(bool,  UseMembar,            true);
  64 
  65 // GC Ergo Flags
  66 define_pd_global(size_t, CMSYoungGenPerWorker, 16*M);  // default max size of CMS young gen, per GC worker thread
  67 
  68 define_pd_global(uintx, TypeProfileLevel, 0);
  69 
  70 define_pd_global(bool, PreserveFramePointer, false);
  71 
  72 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint)  \
  73                                                                             \
  74   product(bool, UseFastEmptyMethods, true,                                  \
  75           "Use fast method entry code for empty methods")                   \
  76                                                                             \
  77   product(bool, UseFastAccessorMethods, true,                               \
  78           "Use fast method entry code for accessor methods")                \

  31 
  32 // Set the default values for platform dependent flags used by the
  33 // runtime system.  See globals.hpp for details of what they do.
  34 
  35 define_pd_global(bool,  ConvertSleepToYield,  true);
  36 define_pd_global(bool,  ShareVtableStubs,     true);
  37 define_pd_global(bool,  NeedsDeoptSuspend,    false);
  38 
  39 define_pd_global(bool,  ImplicitNullChecks,   true);
  40 define_pd_global(bool,  TrapBasedNullChecks,  false);
  41 define_pd_global(bool,  UncommonNullCast,     true);
  42 
  43 define_pd_global(intx,  CodeEntryAlignment,   32);
  44 define_pd_global(intx,  OptoLoopAlignment,    16);
  45 define_pd_global(intx,  InlineFrequencyCount, 100);
  46 define_pd_global(intx,  InlineSmallCode,      1000 );
  47 
  48 #define DEFAULT_STACK_YELLOW_PAGES (2)
  49 #define DEFAULT_STACK_RED_PAGES (1)
  50 #define DEFAULT_STACK_SHADOW_PAGES (5 LP64_ONLY(+1) DEBUG_ONLY(+3))
  51 #define DEFAULT_STACK_RESERVED_PAGES (0)
  52 
  53 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES
  54 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES
  55 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES
  56 #define MIN_STACK_RESERVED_PAGES (0)
  57 
  58 define_pd_global(intx,  StackYellowPages,     DEFAULT_STACK_YELLOW_PAGES);
  59 define_pd_global(intx,  StackRedPages,        DEFAULT_STACK_RED_PAGES);
  60 define_pd_global(intx,  StackShadowPages,     DEFAULT_STACK_SHADOW_PAGES);
  61 define_pd_global(intx,  StackReservedPages,   DEFAULT_STACK_RESERVED_PAGES);
  62 
  63 define_pd_global(bool,  RewriteBytecodes,     true);
  64 define_pd_global(bool,  RewriteFrequentPairs, true);
  65 
  66 define_pd_global(bool,  UseMembar,            true);
  67 
  68 // GC Ergo Flags
  69 define_pd_global(size_t, CMSYoungGenPerWorker, 16*M);  // default max size of CMS young gen, per GC worker thread
  70 
  71 define_pd_global(uintx, TypeProfileLevel, 0);
  72 
  73 define_pd_global(bool, PreserveFramePointer, false);
  74 
  75 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint)  \
  76                                                                             \
  77   product(bool, UseFastEmptyMethods, true,                                  \
  78           "Use fast method entry code for empty methods")                   \
  79                                                                             \
  80   product(bool, UseFastAccessorMethods, true,                               \
  81           "Use fast method entry code for accessor methods")                \