51     size_t copy = mSize - writePos;  in write()  local
53     if (copy > size) {  in write()
54         copy = size;  in write()
57     memcpy(&mData[writePos], ev, copy * sizeof(sensors_event_t));  in write()
59     if (size > copy) {  in write()
60         memcpy(mData, &ev[copy], (size - copy) * sizeof(sensors_event_t));  in write()
90     size_t copy = mSize - readPos;  in read()  local
92     if (copy > size) {  in read()
93         copy = size;  in read()
96     memcpy(ev, &mData[readPos], copy * sizeof(sensors_event_t));  in read()
98     if (size > copy) {  in read()
99         memcpy(&ev[copy], mData, (size - copy) * sizeof(sensors_event_t));  in read()