| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_STORAGE_BLOBFS_ITERATOR_VECTOR_EXTENT_ITERATOR_H_ |
| #define SRC_STORAGE_BLOBFS_ITERATOR_VECTOR_EXTENT_ITERATOR_H_ |
| |
| #include <stdbool.h> |
| #include <stdint.h> |
| #include <zircon/types.h> |
| |
| #include <vector> |
| |
| #include "src/storage/blobfs/allocator/extent_reserver.h" |
| #include "src/storage/blobfs/format.h" |
| #include "src/storage/blobfs/iterator/extent_iterator.h" |
| |
| namespace blobfs { |
| |
| // Allows traversing a collection of extents from a not-yet allocated node. |
| // |
| // This iterator is useful for accessing blocks of blobs which have not yet been committed to disk. |
| class VectorExtentIterator : public ExtentIterator { |
| public: |
| explicit VectorExtentIterator(const std::vector<ReservedExtent>& extents); |
| DISALLOW_COPY_AND_ASSIGN_ALLOW_MOVE(VectorExtentIterator); |
| |
| // ExtentIterator interface. |
| bool Done() const final; |
| zx::result<const Extent*> Next() final; |
| uint64_t BlockIndex() const final; |
| |
| private: |
| const std::vector<ReservedExtent>& extents_; |
| size_t extent_index_ = 0; |
| uint64_t block_count_ = 0; |
| }; |
| |
| } // namespace blobfs |
| |
| #endif // SRC_STORAGE_BLOBFS_ITERATOR_VECTOR_EXTENT_ITERATOR_H_ |