iokit/Kernel/IOMultiMemoryDescriptor.cpp

81     if ( _descriptors )
84             _descriptors[index]->release();
87             IODelete(_descriptors, IOMemoryDescriptor *, _descriptorsCount);
95     _descriptors            = 0;
108         _descriptors = descriptors;
112         _descriptors = IONew(IOMemoryDescriptor *, withCount);
113         if ( _descriptors == 0 )  return false;
116                /* to    */ _descriptors,
138     if ( _descriptors )
141             _descriptors[index]->release();
144             IODelete(_descriptors, IOMemoryDescriptor *, _descriptorsCount);
171         status = _descriptors[index]->prepare(forDirection);
179             statusUndo = _descriptors[index]->complete(forDirection);
207         status = _descriptors[index]->complete(forDirection);
230         if ( offset < _descriptors[index]->getLength() )
232             return _descriptors[index]->getPhysicalSegment(offset, length, options);
234         offset -= _descriptors[index]->getLength();