src/share/vm/services/shenandoahMemoryPool.cpp

rev 10758 : [backport] Initial committed regions count can be more than max
rev 10767 : [backport] ShenandoahMemoryPool should support usage threshold

*** 27,41 ****
  ShenandoahMemoryPool::ShenandoahMemoryPool(ShenandoahHeap* heap) :
          CollectedMemoryPool("Shenandoah",
                              MemoryPool::Heap,
                              heap->capacity(),
                              heap->max_capacity(),
!                             false /* support_usage_threshold */),
                              _heap(heap) {}
  
  MemoryUsage ShenandoahMemoryPool::get_memory_usage() {
!   size_t maxSize   = max_size();
    size_t used      = used_in_bytes();
    size_t committed = _heap->committed();
  
!   return MemoryUsage(initial_size(), used, committed, maxSize);
  }
--- 27,47 ----
  ShenandoahMemoryPool::ShenandoahMemoryPool(ShenandoahHeap* heap) :
          CollectedMemoryPool("Shenandoah",
                              MemoryPool::Heap,
                              heap->capacity(),
                              heap->max_capacity(),
!                             true /* support_usage_threshold */),
                              _heap(heap) {}
  
  MemoryUsage ShenandoahMemoryPool::get_memory_usage() {
!   size_t initial   = initial_size();
!   size_t max       = max_size();
    size_t used      = used_in_bytes();
    size_t committed = _heap->committed();
  
!   assert(initial <= max,    err_msg("initial: "   SIZE_FORMAT ", max: "       SIZE_FORMAT, initial,   max));
!   assert(used <= max,       err_msg("used: "      SIZE_FORMAT ", max: "       SIZE_FORMAT, used,      max));
!   assert(committed <= max,  err_msg("committed: " SIZE_FORMAT ", max: "       SIZE_FORMAT, committed, max));
!   assert(used <= committed, err_msg("used: "      SIZE_FORMAT ", committed: " SIZE_FORMAT, used,      committed));
! 
!   return MemoryUsage(initial, used, committed, max);
  }