kernel/cache/file_map_test.cpp

26 	Map& Add(off_t offset, off_t length, off_t diskOffset);
33 	status_t GetFileMap(off_t offset, off_t length, file_io_vec* vecs,
39 	int32 _IndexFor(off_t offset);
94 Map::Add(off_t offset, off_t length, off_t diskOffset)
96 	_Verbose("  Add(): offset %lld, length %lld, diskOffset %lld", offset,
100 		fOffsets[fCount] = offset;
101 		fVecs[fCount].offset = diskOffset;
149 	for (off_t offset = 0; offset < fSize; offset += 256) {
150 		fTestOffset = offset;
153 		status_t status = file_map_translate(fMap, offset, fTestLength,
156 			_Error("file_map_translate(offset %lld) failed: %s", offset,
160 		int32 index = _IndexFor(offset);
162 			_Error("index for offset %lld not found!", offset);
164 		off_t diff = offset - fOffsets[index];
170 		if (fTestVecs[0].offset != fVecs[index].offset + diff) {
171 			_Error("offset mismatch: got %lld, should be %lld",
172 				fTestVecs[0].offset, fVecs[index].offset + diff);
181 Map::GetFileMap(off_t offset, off_t length, file_io_vec* vecs,
184 	int32 index = _IndexFor(offset);
186 		_Error("No vec for offset %lld\n", offset);
188 	_Verbose("    GetFileMap(): offset: %lld, length: %lld, index %ld", offset,
199 		off_t diff = offset - fOffsets[index];
200 		vecs[count].offset = fVecs[index].offset + diff;
202 		_Verbose("      [%lu] offset %lld, length %lld", count,
203 			vecs[count].offset, vecs[count].length);
206 		offset += vecs[count].length;
231 		fprintf(stderr, "  [%lu] offset %lld, length %lld, disk offset %lld\n",
232 			i, fOffsets[i], fVecs[i].length, fVecs[i].offset);
236 		fprintf(stderr, "got for offset %lld, length %lld:\n",
241 		fprintf(stderr, "  [%lu] offset %lld, length %lld\n",
242 			i, fTestVecs[i].offset, fTestVecs[i].length);
270 Map::_IndexFor(off_t offset)
273 		if (offset >= fOffsets[i] && offset < fOffsets[i] + fVecs[i].length)
285 vfs_get_file_map(struct vnode* vnode, off_t offset, uint32 length,
289 	return map->GetFileMap(offset, length, vecs, _vecCount);