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src/share/vm/gc/g1/g1HeapTransition.cpp

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  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc/g1/g1CollectedHeap.hpp"
  27 #include "gc/g1/g1CollectorPolicy.hpp"
  28 #include "gc/g1/g1HeapTransition.hpp"
  29 #include "logging/log.hpp"
  30 #include "memory/metaspace.hpp"
  31 
  32 G1HeapTransition::Data::Data(G1CollectedHeap* g1_heap) {
  33   YoungList* young_list = g1_heap->young_list();
  34   _eden_length = young_list->eden_length();
  35   _survivor_length = young_list->survivor_length();
  36   _old_length = g1_heap->old_regions_count();
  37   _humongous_length = g1_heap->humongous_regions_count();
  38   _metaspace_used_bytes = MetaspaceAux::used_bytes();
  39 }
  40 
  41 G1HeapTransition::G1HeapTransition(G1CollectedHeap* g1_heap) : _g1_heap(g1_heap), _before(g1_heap) { }
  42 
  43 struct SeparatedUsageInfo : public StackObj {
  44   size_t _eden_used;
  45   size_t _survivor_used;
  46   size_t _old_used;
  47   size_t _humongous_used;
  48 
  49   size_t _eden_region_count;
  50   size_t _survivor_region_count;
  51   size_t _old_region_count;
  52   size_t _humongous_region_count;
  53 
  54   SeparatedUsageInfo() :
  55     _eden_used(0), _survivor_used(0), _old_used(0), _humongous_used(0),
  56     _eden_region_count(0), _survivor_region_count(0), _old_region_count(0), _humongous_region_count(0) {}
  57 };
  58 
  59 class SumSeparatedUsedClosure: public HeapRegionClosure {
  60 public:
  61   SeparatedUsageInfo _info;
  62   bool doHeapRegion(HeapRegion* r) {
  63     if (r->is_old()) {
  64       _info._old_used += r->used();
  65       _info._old_region_count++;
  66     } else if (r->is_survivor()) {
  67       _info._survivor_used += r->used();
  68       _info._survivor_region_count++;
  69     } else if (r->is_eden()) {
  70       _info._eden_used += r->used();
  71       _info._eden_region_count++;
  72     } else if (r->is_humongous()) {
  73       _info._humongous_used += r->used();
  74       _info._humongous_region_count++;
  75     } else {
  76       assert(r->used() == 0, "Expected used to be 0 but it was " SIZE_FORMAT, r->used());
  77     }
  78     return false;
  79   }
  80 };
  81 
  82 void G1HeapTransition::print() {
  83   Data after(_g1_heap);
  84 
  85   size_t eden_capacity_bytes_after_gc = _g1_heap->g1_policy()->young_list_target_length() - after._survivor_length;
  86   size_t survivor_capacity_bytes_after_gc = _g1_heap->g1_policy()->max_survivor_regions();
  87 
  88   SeparatedUsageInfo usage_info;
  89   if (log_is_enabled(Trace, gc, heap)) {
  90     SumSeparatedUsedClosure blk;
  91     _g1_heap->heap_region_iterate(&blk);
  92     usage_info = blk._info;
  93     assert(usage_info._eden_region_count == 0, "Expected no eden regions, but got " SIZE_FORMAT, usage_info._eden_region_count);
  94     assert(usage_info._survivor_region_count == after._survivor_length, "Expected survivors to be " SIZE_FORMAT " but was " SIZE_FORMAT,
  95         after._survivor_length, usage_info._survivor_region_count);
  96     assert(usage_info._old_region_count == after._old_length, "Expected old to be " SIZE_FORMAT " but was " SIZE_FORMAT,
  97         after._old_length, usage_info._old_region_count);
  98     assert(usage_info._humongous_region_count == after._humongous_length, "Expected humongous to be " SIZE_FORMAT " but was " SIZE_FORMAT,
  99         after._humongous_length, usage_info._humongous_region_count);
 100   }
 101 
 102   log_info(gc, heap)("Eden regions: " SIZE_FORMAT "->" SIZE_FORMAT "("  SIZE_FORMAT ")",
 103                      _before._eden_length, after._eden_length, eden_capacity_bytes_after_gc);
 104   log_trace(gc, heap)(" Used: 0K, Waste: 0K");
 105 
 106   log_info(gc, heap)("Survivor regions: " SIZE_FORMAT "->" SIZE_FORMAT "("  SIZE_FORMAT ")",
 107                      _before._survivor_length, after._survivor_length, survivor_capacity_bytes_after_gc);
 108   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
 109       usage_info._survivor_used / K, ((after._survivor_length * HeapRegion::GrainBytes) - usage_info._survivor_used) / K);
 110 
 111   log_info(gc, heap)("Old regions: " SIZE_FORMAT "->" SIZE_FORMAT,
 112                      _before._old_length, after._old_length);
 113   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
 114       usage_info._old_used / K, ((after._old_length * HeapRegion::GrainBytes) - usage_info._old_used) / K);
 115 
 116   log_info(gc, heap)("Humongous regions: " SIZE_FORMAT "->" SIZE_FORMAT,
 117                      _before._humongous_length, after._humongous_length);
 118   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
 119       usage_info._humongous_used / K, ((after._humongous_length * HeapRegion::GrainBytes) - usage_info._humongous_used) / K);
 120 
 121   MetaspaceAux::print_metaspace_change(_before._metaspace_used_bytes);
 122 }


  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc/g1/g1CollectedHeap.hpp"
  27 #include "gc/g1/g1CollectorPolicy.hpp"
  28 #include "gc/g1/g1HeapTransition.hpp"
  29 #include "logging/log.hpp"
  30 #include "memory/metaspace.hpp"
  31 
  32 G1HeapTransition::Data::Data(G1CollectedHeap* g1_heap) {
  33   YoungList* young_list = g1_heap->young_list();
  34   _eden_length = young_list->eden_length();
  35   _survivor_length = young_list->survivor_length();
  36   _old_length = g1_heap->old_regions_count();
  37   _humongous_length = g1_heap->humongous_regions_count();
  38   _metaspace_used_bytes = MetaspaceAux::used_bytes();
  39 }
  40 
  41 G1HeapTransition::G1HeapTransition(G1CollectedHeap* g1_heap) : _g1_heap(g1_heap), _before(g1_heap) { }
  42 
  43 struct DetailedUsage : public StackObj {
  44   size_t _eden_used;
  45   size_t _survivor_used;
  46   size_t _old_used;
  47   size_t _humongous_used;
  48 
  49   size_t _eden_region_count;
  50   size_t _survivor_region_count;
  51   size_t _old_region_count;
  52   size_t _humongous_region_count;
  53 
  54   DetailedUsage() :
  55     _eden_used(0), _survivor_used(0), _old_used(0), _humongous_used(0),
  56     _eden_region_count(0), _survivor_region_count(0), _old_region_count(0), _humongous_region_count(0) {}
  57 };
  58 
  59 class DetailedUsageClosure: public HeapRegionClosure {
  60 public:
  61   DetailedUsage _usage;
  62   bool doHeapRegion(HeapRegion* r) {
  63     if (r->is_old()) {
  64       _usage._old_used += r->used();
  65       _usage._old_region_count++;
  66     } else if (r->is_survivor()) {
  67       _usage._survivor_used += r->used();
  68       _usage._survivor_region_count++;
  69     } else if (r->is_eden()) {
  70       _usage._eden_used += r->used();
  71       _usage._eden_region_count++;
  72     } else if (r->is_humongous()) {
  73       _usage._humongous_used += r->used();
  74       _usage._humongous_region_count++;
  75     } else {
  76       assert(r->used() == 0, "Expected used to be 0 but it was " SIZE_FORMAT, r->used());
  77     }
  78     return false;
  79   }
  80 };
  81 
  82 void G1HeapTransition::print() {
  83   Data after(_g1_heap);
  84 
  85   size_t eden_capacity_bytes_after_gc = _g1_heap->g1_policy()->young_list_target_length() - after._survivor_length;
  86   size_t survivor_capacity_bytes_after_gc = _g1_heap->g1_policy()->max_survivor_regions();
  87 
  88   DetailedUsage usage;
  89   if (log_is_enabled(Trace, gc, heap)) {
  90     DetailedUsageClosure blk;
  91     _g1_heap->heap_region_iterate(&blk);
  92     usage = blk._usage;
  93     assert(usage._eden_region_count == 0, "Expected no eden regions, but got " SIZE_FORMAT, usage._eden_region_count);
  94     assert(usage._survivor_region_count == after._survivor_length, "Expected survivors to be " SIZE_FORMAT " but was " SIZE_FORMAT,
  95         after._survivor_length, usage._survivor_region_count);
  96     assert(usage._old_region_count == after._old_length, "Expected old to be " SIZE_FORMAT " but was " SIZE_FORMAT,
  97         after._old_length, usage._old_region_count);
  98     assert(usage._humongous_region_count == after._humongous_length, "Expected humongous to be " SIZE_FORMAT " but was " SIZE_FORMAT,
  99         after._humongous_length, usage._humongous_region_count);
 100   }
 101 
 102   log_info(gc, heap)("Eden regions: " SIZE_FORMAT "->" SIZE_FORMAT "("  SIZE_FORMAT ")",
 103                      _before._eden_length, after._eden_length, eden_capacity_bytes_after_gc);
 104   log_trace(gc, heap)(" Used: 0K, Waste: 0K");
 105 
 106   log_info(gc, heap)("Survivor regions: " SIZE_FORMAT "->" SIZE_FORMAT "("  SIZE_FORMAT ")",
 107                      _before._survivor_length, after._survivor_length, survivor_capacity_bytes_after_gc);
 108   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
 109       usage._survivor_used / K, ((after._survivor_length * HeapRegion::GrainBytes) - usage._survivor_used) / K);
 110 
 111   log_info(gc, heap)("Old regions: " SIZE_FORMAT "->" SIZE_FORMAT,
 112                      _before._old_length, after._old_length);
 113   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
 114       usage._old_used / K, ((after._old_length * HeapRegion::GrainBytes) - usage._old_used) / K);
 115 
 116   log_info(gc, heap)("Humongous regions: " SIZE_FORMAT "->" SIZE_FORMAT,
 117                      _before._humongous_length, after._humongous_length);
 118   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
 119       usage._humongous_used / K, ((after._humongous_length * HeapRegion::GrainBytes) - usage._humongous_used) / K);
 120 
 121   MetaspaceAux::print_metaspace_change(_before._metaspace_used_bytes);
 122 }
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