241     Rect* head;  member in android::Region::rasterizer
247         : bounds(reg.mBounds), storage(reg.mStorage), head(), tail(), cur() {  in rasterizer()
291         if (tail-head == ssize_t(span.size())) {  in flushSpan()
293             Rect const* q = head;  in flushSpan()
307             Rect* r = head;  in flushSpan()
317             head = tail - span.size();  in flushSpan()
423     Region::const_iterator head = dst.begin();  in boolean_operation()  local
427         if (head != tail) {  in boolean_operation()
429                     head->left != it.rect().fLeft ||       in boolean_operation()
430                     head->top != it.rect().fTop ||       in boolean_operation()
431                     head->right != it.rect().fRight ||       in boolean_operation()
432                     head->bottom != it.rect().fBottom  in boolean_operation()
441         head++;  in boolean_operation()
445     if (head != tail) {  in boolean_operation()
612     const_iterator head = begin();  in dump()  local
619             what, this, tail-head);  in dump()
621     while (head != tail) {  in dump()
623                 head->left, head->top, head->right, head->bottom);  in dump()
625         head++;  in dump()
632     const_iterator head = begin();  in dump()  local
634     LOGD("  Region %s (this=%p, count=%d)\n", what, this, tail-head);  in dump()
635     while (head != tail) {  in dump()
637                 head->left, head->top, head->right, head->bottom);  in dump()
638         head++;  in dump()