61 class Segment {  class
63   Segment* next() const { return next_; }  in next()
67   int capacity() const { return size_ - sizeof(Segment); }  in capacity()
69   Address start() const { return address(sizeof(Segment)); }  in start()
78   Segment* next_;
87 Segment* Zone::NewSegment(int size) {  in NewSegment()
88   Segment* result = reinterpret_cast<Segment*>(Malloced::New(size));  in NewSegment()
100 void Zone::DeleteSegment(Segment* segment, int size) {  in DeleteSegment()
113   Segment* keep = segment_head_;  in DeleteAll()
120   Segment* current = segment_head_;  in DeleteAll()
122     Segment* next = current->next();  in DeleteAll()
168   Segment* head = segment_head_;  in NewExpand()
170   static const int kSegmentOverhead = sizeof(Segment) + kAlignment;  in NewExpand()
181   Segment* segment = NewSegment(new_size);  in NewExpand()