34   FreeRegionList l("test");
  35   const uint num_regions_in_test = 5;
  36 
  37   // Create a fake heap. It does not need to be valid, as the HeapRegion constructor
  38   // does not access it.
  39   MemRegion heap(NULL, num_regions_in_test * HeapRegion::GrainWords);
  40 
  41   // Allocate a fake BOT because the HeapRegion constructor initializes
  42   // the BOT.
  43   size_t bot_size = G1BlockOffsetTable::compute_size(heap.word_size());
  44   HeapWord* bot_data = NEW_C_HEAP_ARRAY(HeapWord, bot_size, mtGC);
  45   ReservedSpace bot_rs(G1BlockOffsetTable::compute_size(heap.word_size()));
  46   G1RegionToSpaceMapper* bot_storage =
  47     G1RegionToSpaceMapper::create_mapper(bot_rs,
  48                                          bot_rs.size(),
  49                                          os::vm_page_size(),
  50                                          HeapRegion::GrainBytes,
  51                                          BOTConstants::N_bytes,
  52                                          mtGC);
  53   G1BlockOffsetTable bot(heap, bot_storage);
  54   bot_storage->commit_regions(0, num_regions_in_test);
  55 
  56   // Set up memory regions for the heap regions.
  57   MemRegion mr0(heap.start(), HeapRegion::GrainWords);
  58   MemRegion mr1(mr0.end(), HeapRegion::GrainWords);
  59   MemRegion mr2(mr1.end(), HeapRegion::GrainWords);
  60   MemRegion mr3(mr2.end(), HeapRegion::GrainWords);
  61   MemRegion mr4(mr3.end(), HeapRegion::GrainWords);
  62 
  63   HeapRegion hr0(0, &bot, mr0);
  64   HeapRegion hr1(1, &bot, mr1);
  65   HeapRegion hr2(2, &bot, mr2);
  66   HeapRegion hr3(3, &bot, mr3);
  67   HeapRegion hr4(4, &bot, mr4);
  68   l.add_ordered(&hr1);
  69   l.add_ordered(&hr0);
  70   l.add_ordered(&hr3);
  71   l.add_ordered(&hr4);
  72   l.add_ordered(&hr2);
  73 
  74   EXPECT_EQ(l.length(), num_regions_in_test) << "Wrong free region list length";

  34   FreeRegionList l("test");
  35   const uint num_regions_in_test = 5;
  36 
  37   // Create a fake heap. It does not need to be valid, as the HeapRegion constructor
  38   // does not access it.
  39   MemRegion heap(NULL, num_regions_in_test * HeapRegion::GrainWords);
  40 
  41   // Allocate a fake BOT because the HeapRegion constructor initializes
  42   // the BOT.
  43   size_t bot_size = G1BlockOffsetTable::compute_size(heap.word_size());
  44   HeapWord* bot_data = NEW_C_HEAP_ARRAY(HeapWord, bot_size, mtGC);
  45   ReservedSpace bot_rs(G1BlockOffsetTable::compute_size(heap.word_size()));
  46   G1RegionToSpaceMapper* bot_storage =
  47     G1RegionToSpaceMapper::create_mapper(bot_rs,
  48                                          bot_rs.size(),
  49                                          os::vm_page_size(),
  50                                          HeapRegion::GrainBytes,
  51                                          BOTConstants::N_bytes,
  52                                          mtGC);
  53   G1BlockOffsetTable bot(heap, bot_storage);
  54   bot_storage->commit_regions(0, num_regions_in_test, G1MemoryNodeManager::AnyNodeIndex);
  55 
  56   // Set up memory regions for the heap regions.
  57   MemRegion mr0(heap.start(), HeapRegion::GrainWords);
  58   MemRegion mr1(mr0.end(), HeapRegion::GrainWords);
  59   MemRegion mr2(mr1.end(), HeapRegion::GrainWords);
  60   MemRegion mr3(mr2.end(), HeapRegion::GrainWords);
  61   MemRegion mr4(mr3.end(), HeapRegion::GrainWords);
  62 
  63   HeapRegion hr0(0, &bot, mr0);
  64   HeapRegion hr1(1, &bot, mr1);
  65   HeapRegion hr2(2, &bot, mr2);
  66   HeapRegion hr3(3, &bot, mr3);
  67   HeapRegion hr4(4, &bot, mr4);
  68   l.add_ordered(&hr1);
  69   l.add_ordered(&hr0);
  70   l.add_ordered(&hr3);
  71   l.add_ordered(&hr4);
  72   l.add_ordered(&hr2);
  73 
  74   EXPECT_EQ(l.length(), num_regions_in_test) << "Wrong free region list length";