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

rev 55538 : 8226757: Shenandoah: Make Traversal a separate mode

*** 27,62 ****
  #include "gc/shenandoah/shenandoahCollectionSet.hpp"
  #include "gc/shenandoah/shenandoahHeapRegion.hpp"
  #include "logging/log.hpp"
  #include "logging/logTag.hpp"
  
! ShenandoahPassiveHeuristics::ShenandoahPassiveHeuristics() : ShenandoahHeuristics() {
!   // Do not allow concurrent cycles.
!   FLAG_SET_DEFAULT(ExplicitGCInvokesConcurrent, false);
!   FLAG_SET_DEFAULT(ShenandoahImplicitGCInvokesConcurrent, false);
! 
!   // Passive runs with max speed, reacts on allocation failure.
!   FLAG_SET_DEFAULT(ShenandoahPacing, false);
! 
!   // No need for evacuation reserve with Full GC, only for Degenerated GC.
!   if (!ShenandoahDegeneratedGC) {
!     SHENANDOAH_ERGO_OVERRIDE_DEFAULT(ShenandoahEvacReserve, 0);
!   }
! 
!   // Disable known barriers by default.
!   SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahLoadRefBarrier);
!   SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahSATBBarrier);
!   SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahKeepAliveBarrier);
!   SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahStoreValEnqueueBarrier);
!   SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahCASBarrier);
!   SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahCloneBarrier);
! 
!   // Final configuration checks
!   // No barriers are required to run.
! }
! 
! bool ShenandoahPassiveHeuristics::should_start_normal_gc() const {
    // Never do concurrent GCs.
    return false;
  }
  
  bool ShenandoahPassiveHeuristics::should_process_references() {
--- 27,37 ----
  #include "gc/shenandoah/shenandoahCollectionSet.hpp"
  #include "gc/shenandoah/shenandoahHeapRegion.hpp"
  #include "logging/log.hpp"
  #include "logging/logTag.hpp"
  
! bool ShenandoahPassiveHeuristics::should_start_gc() const {
    // Never do concurrent GCs.
    return false;
  }
  
  bool ShenandoahPassiveHeuristics::should_process_references() {