171           mMapFd(-1) {  in Impl()
260         if (mMapFd == -1) {  in map()
262                               flags, mapOffset, (unsigned char**)&map.addr, &mMapFd);  in map()
267                 mMapFd = -1;  in map()
274             map.addr = mmap(nullptr, mapSize, prot, flags, mMapFd, mapOffset);  in map()
277                   mapSize, prot, flags, mMapFd, mapOffset, errno);  in map()
292         if (mMapFd < 0 || mMappings.empty()) {  in unmap()
324         if (mMapFd >= 0) {  in ~Impl()
325             close(mMapFd);  in ~Impl()
326             mMapFd = -1;  in ~Impl()
359     int mMapFd; // only one for now  member in android::C2AllocationIon::Impl