41 
  42 struct DetailedUsage : public StackObj {
  43   size_t _eden_used;
  44   size_t _survivor_used;
  45   size_t _old_used;
  46   size_t _humongous_used;
  47 
  48   size_t _eden_region_count;
  49   size_t _survivor_region_count;
  50   size_t _old_region_count;
  51   size_t _humongous_region_count;
  52 
  53   DetailedUsage() :
  54     _eden_used(0), _survivor_used(0), _old_used(0), _humongous_used(0),
  55     _eden_region_count(0), _survivor_region_count(0), _old_region_count(0), _humongous_region_count(0) {}
  56 };
  57 
  58 class DetailedUsageClosure: public HeapRegionClosure {
  59 public:
  60   DetailedUsage _usage;
  61   bool doHeapRegion(HeapRegion* r) {
  62     if (r->is_old()) {
  63       _usage._old_used += r->used();
  64       _usage._old_region_count++;
  65     } else if (r->is_survivor()) {
  66       _usage._survivor_used += r->used();
  67       _usage._survivor_region_count++;
  68     } else if (r->is_eden()) {
  69       _usage._eden_used += r->used();
  70       _usage._eden_region_count++;
  71     } else if (r->is_humongous()) {
  72       _usage._humongous_used += r->used();
  73       _usage._humongous_region_count++;
  74     } else {
  75       assert(r->used() == 0, "Expected used to be 0 but it was " SIZE_FORMAT, r->used());
  76     }
  77     return false;
  78   }
  79 };
  80 
  81 void G1HeapTransition::print() {

  41 
  42 struct DetailedUsage : public StackObj {
  43   size_t _eden_used;
  44   size_t _survivor_used;
  45   size_t _old_used;
  46   size_t _humongous_used;
  47 
  48   size_t _eden_region_count;
  49   size_t _survivor_region_count;
  50   size_t _old_region_count;
  51   size_t _humongous_region_count;
  52 
  53   DetailedUsage() :
  54     _eden_used(0), _survivor_used(0), _old_used(0), _humongous_used(0),
  55     _eden_region_count(0), _survivor_region_count(0), _old_region_count(0), _humongous_region_count(0) {}
  56 };
  57 
  58 class DetailedUsageClosure: public HeapRegionClosure {
  59 public:
  60   DetailedUsage _usage;
  61   bool do_heap_region(HeapRegion* r) {
  62     if (r->is_old()) {
  63       _usage._old_used += r->used();
  64       _usage._old_region_count++;
  65     } else if (r->is_survivor()) {
  66       _usage._survivor_used += r->used();
  67       _usage._survivor_region_count++;
  68     } else if (r->is_eden()) {
  69       _usage._eden_used += r->used();
  70       _usage._eden_region_count++;
  71     } else if (r->is_humongous()) {
  72       _usage._humongous_used += r->used();
  73       _usage._humongous_region_count++;
  74     } else {
  75       assert(r->used() == 0, "Expected used to be 0 but it was " SIZE_FORMAT, r->used());
  76     }
  77     return false;
  78   }
  79 };
  80 
  81 void G1HeapTransition::print() {