src/hotspot/share/gc/shared/gcArguments.cpp

*** 29,46 ****
  #include "runtime/globals.hpp"
  #include "runtime/globals_extension.hpp"
  #include "utilities/macros.hpp"
  
  void GCArguments::initialize() {
! #if INCLUDE_ALL_GCS
    if (MinHeapFreeRatio == 100) {
      // Keeping the heap 100% free is hard ;-) so limit it to 99%.
      FLAG_SET_ERGO(uintx, MinHeapFreeRatio, 99);
    }
  
-   // If class unloading is disabled, also disable concurrent class unloading.
    if (!ClassUnloading) {
!     FLAG_SET_CMDLINE(bool, CMSClassUnloadingEnabled, false);
      FLAG_SET_CMDLINE(bool, ClassUnloadingWithConcurrentMark, false);
    }
- #endif // INCLUDE_ALL_GCS
  }
--- 29,56 ----
  #include "runtime/globals.hpp"
  #include "runtime/globals_extension.hpp"
  #include "utilities/macros.hpp"
  
  void GCArguments::initialize() {
!   if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) {
!     MarkSweepAlwaysCompactCount = 1;  // Move objects every gc.
!   }
! 
!   if (!(UseParallelGC || UseParallelOldGC) && FLAG_IS_DEFAULT(ScavengeBeforeFullGC)) {
!     FLAG_SET_DEFAULT(ScavengeBeforeFullGC, false);
!   }
! 
!   if (GCTimeLimit == 100) {
!     // Turn off gc-overhead-limit-exceeded checks
!     FLAG_SET_DEFAULT(UseGCOverheadLimit, false);
!   }
! 
    if (MinHeapFreeRatio == 100) {
      // Keeping the heap 100% free is hard ;-) so limit it to 99%.
      FLAG_SET_ERGO(uintx, MinHeapFreeRatio, 99);
    }
  
    if (!ClassUnloading) {
!     // If class unloading is disabled, also disable concurrent class unloading.
      FLAG_SET_CMDLINE(bool, ClassUnloadingWithConcurrentMark, false);
    }
  }