src/share/vm/gc_implementation/shenandoah/shenandoahHeapRegion.cpp

rev 11156 : [backport] 8220350: Refactor ShenandoahHeap::initialize
Reviewed-by: rkennke, zgu
rev 11158 : [backport] 8220162: Shenandoah should not commit HugeTLBFS memory
Reviewed-by: rkennke, zgu

*** 50,60 ****
  size_t ShenandoahHeapRegion::MaxTLABSizeWords = 0;
  
  ShenandoahHeapRegion::ShenandoahHeapRegion(ShenandoahHeap* heap, HeapWord* start,
                                             size_t size_words, size_t index, bool committed) :
    _heap(heap),
-   _pacer(ShenandoahPacing ? heap->pacer() : NULL),
    _reserved(MemRegion(start, size_words)),
    _region_number(index),
    _new_top(NULL),
    _critical_pins(0),
    _empty_time(os::elapsedTime()),
--- 50,59 ----
*** 610,630 ****
    log_info(gc, init)("Max TLAB size: " SIZE_FORMAT "%s",
                       byte_size_in_proper_unit(MaxTLABSizeBytes), proper_unit_for_byte_size(MaxTLABSizeBytes));
  }
  
  void ShenandoahHeapRegion::do_commit() {
!   if (!os::commit_memory((char *) _reserved.start(), _reserved.byte_size(), false)) {
      report_java_out_of_memory("Unable to commit region");
    }
    if (!_heap->commit_bitmap_slice(this)) {
      report_java_out_of_memory("Unable to commit bitmaps for region");
    }
    _heap->increase_committed(ShenandoahHeapRegion::region_size_bytes());
  }
  
  void ShenandoahHeapRegion::do_uncommit() {
!   if (!os::uncommit_memory((char *) _reserved.start(), _reserved.byte_size())) {
      report_java_out_of_memory("Unable to uncommit region");
    }
    if (!_heap->uncommit_bitmap_slice(this)) {
      report_java_out_of_memory("Unable to uncommit bitmaps for region");
    }
--- 609,629 ----
    log_info(gc, init)("Max TLAB size: " SIZE_FORMAT "%s",
                       byte_size_in_proper_unit(MaxTLABSizeBytes), proper_unit_for_byte_size(MaxTLABSizeBytes));
  }
  
  void ShenandoahHeapRegion::do_commit() {
!   if (!_heap->is_heap_region_special() && !os::commit_memory((char *) _reserved.start(), _reserved.byte_size(), false)) {
      report_java_out_of_memory("Unable to commit region");
    }
    if (!_heap->commit_bitmap_slice(this)) {
      report_java_out_of_memory("Unable to commit bitmaps for region");
    }
    _heap->increase_committed(ShenandoahHeapRegion::region_size_bytes());
  }
  
  void ShenandoahHeapRegion::do_uncommit() {
!   if (!_heap->is_heap_region_special() && !os::uncommit_memory((char *) _reserved.start(), _reserved.byte_size())) {
      report_java_out_of_memory("Unable to uncommit region");
    }
    if (!_heap->uncommit_bitmap_slice(this)) {
      report_java_out_of_memory("Unable to uncommit bitmaps for region");
    }