Index: storage/browser/blob/blob_flattener.h |
diff --git a/storage/browser/blob/blob_flattener.h b/storage/browser/blob/blob_flattener.h |
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+// Copyright 2016 The Chromium 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 STORAGE_BROWSER_BLOB_BLOB_FLATTENER_H_ |
+#define STORAGE_BROWSER_BLOB_BLOB_FLATTENER_H_ |
+ |
+#include <map> |
+#include <string> |
+#include <utility> |
+ |
+#include "base/macros.h" |
+#include "base/numerics/safe_math.h" |
+#include "storage/browser/blob/blob_storage_registry.h" |
+#include "storage/browser/storage_browser_export.h" |
+ |
+namespace storage { |
+class BlobDataBuilder; |
+class InternalBlobData; |
+ |
+// This class takes a BlobDataBuilder which can contain blob references and |
+// 'flattens' these references out. The resulting flattened blob (both regular |
+// items and items from other blobs) is put into the |output_blob|. We keep |
+// track of edge cases like partial slicing on data or pending file entries, |
+// and calculate the total & required memory for this blob. |
+struct STORAGE_EXPORT BlobFlattener { |
kinuko
2016/07/17 16:15:46
Btw this seems to do more than just flattening out
kinuko
2016/07/17 16:15:46
Is the only user of this struct BlobStorageContext
dmurph
2016/07/19 02:26:27
Same problem as BlobSlice, where we need 5 output
|
+ BlobFlattener(const BlobDataBuilder& transportation_result, |
kinuko
2016/07/17 16:15:46
nit: On the callsite we just call the builder 'con
dmurph
2016/07/19 02:26:27
Done.
|
+ InternalBlobData* output_blob, |
+ BlobStorageRegistry* registry); |
+ ~BlobFlattener(); |
+ |
+ // References didn't exist, the reference offset/size were invalid, or we were |
+ // referencing ourself. |
+ bool contains_invalid_references = false; |
+ // A references was broken, so we should be broken. |
+ bool contains_broken_references = false; |
+ |
+ // The input builder has an item with type TYPE_BYTES_DESCRIPTION or TYPE_FILE |
+ // with the path == BlobDataBuilder::kAppendFutureFileTemporaryFileName. |
+ // (These occur when one calls AppendFutureData or AppendFutureFile on the |
+ // builder). |
+ bool contains_pending_content = false; |
kinuko
2016/07/17 16:15:46
Could these three bools be just captured as a sing
dmurph
2016/07/19 02:26:27
Done.
|
+ |
+ // This is the total size of the blob, including all memory, files, etc. |
+ base::CheckedNumeric<uint64_t> total_size; |
+ // This is the new memory needed to construct the blob, including both memory |
+ // items as well as copies from other blobs. |
+ base::CheckedNumeric<uint64_t> memory_needed; |
+ |
+ // This contains all blobs referenced. |
+ std::vector<std::pair<std::string, BlobStorageRegistry::Entry*>> |
+ dependent_blobs; |
+ |
+ // These record all future copies we'll need to do from referenced blobs. This |
+ // happens when we do a partial slice from a pending data or file item. |
+ std::vector<BlobStorageRegistry::ItemCopyEntry> copies; |
+}; |
+ |
+} // namespace storage |
+#endif // STORAGE_BROWSER_BLOB_BLOB_FLATTENER_H_ |