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Unified Diff: storage/browser/blob/blob_entry.cc

Issue 2448353002: [BlobAsync] Moving async handling into BlobStorageContext & quota out. (Closed)
Patch Set: comments from Marijn Created 4 years, 1 month ago
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Index: storage/browser/blob/blob_entry.cc
diff --git a/storage/browser/blob/blob_entry.cc b/storage/browser/blob/blob_entry.cc
new file mode 100644
index 0000000000000000000000000000000000000000..03c3dd9f8b6884a4e1cdcf26f258371fce519434
--- /dev/null
+++ b/storage/browser/blob/blob_entry.cc
@@ -0,0 +1,93 @@
+// Copyright 2015 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.
+
+#include <utility>
+
+#include "base/callback.h"
+#include "base/containers/hash_tables.h"
+#include "base/metrics/histogram.h"
+#include "storage/browser/blob/blob_data_handle.h"
+#include "storage/browser/blob/blob_data_item.h"
+#include "storage/browser/blob/blob_entry.h"
+#include "storage/browser/blob/shareable_blob_data_item.h"
+#include "storage/common/data_element.h"
+
+namespace storage {
+namespace {
+bool IsBytes(DataElement::Type type) {
+ return type == DataElement::TYPE_BYTES ||
+ type == DataElement::TYPE_BYTES_DESCRIPTION;
+}
+} // namespace
+
+BlobEntry::ItemCopyEntry::ItemCopyEntry(
+ scoped_refptr<ShareableBlobDataItem> source_item,
+ size_t source_item_offset,
+ scoped_refptr<ShareableBlobDataItem> dest_item)
+ : source_item(std::move(source_item)),
+ source_item_offset(source_item_offset),
+ dest_item(std::move(dest_item)) {}
+
+BlobEntry::ItemCopyEntry::ItemCopyEntry(ItemCopyEntry&& other) = default;
+BlobEntry::ItemCopyEntry& BlobEntry::ItemCopyEntry::operator=(
+ BlobEntry::ItemCopyEntry&& rhs) = default;
+BlobEntry::ItemCopyEntry::~ItemCopyEntry() {}
+
+BlobEntry::BuildingState::BuildingState(
+ bool transport_items_present,
+ TransportAllowedCallback transport_allowed_callback,
+ size_t num_building_dependent_blobs,
+ bool memory_quota_needed)
+ : transport_items_present(transport_items_present),
+ transport_allowed_callback(transport_allowed_callback),
+ dependent_building_blobs_present(num_building_dependent_blobs > 0),
+ num_building_dependent_blobs(num_building_dependent_blobs),
+ memory_quota_needed(memory_quota_needed) {}
+
+BlobEntry::BuildingState::~BuildingState() {}
+
+BlobEntry::BlobEntry(const std::string& content_type,
+ const std::string& content_disposition)
+ : content_type_(content_type), content_disposition_(content_disposition) {}
+BlobEntry::~BlobEntry() {}
+
+void BlobEntry::AppendSharedBlobItem(
+ const std::string& my_uuid,
+ scoped_refptr<ShareableBlobDataItem> item) {
+ DCHECK(item);
+ if (!items_.empty()) {
+ offsets_.push_back(size_);
+ }
+ size_ += item->item()->length();
+ item->referencing_blobs_mutable()->insert(my_uuid);
+ items_.push_back(std::move(item));
+}
+
+const std::vector<scoped_refptr<ShareableBlobDataItem>>& BlobEntry::items()
+ const {
+ return items_;
+}
+
+void BlobEntry::RemoveBlobFromShareableItems(const std::string& blob_uuid) {
+ for (auto& data_item : items_) {
+ data_item->referencing_blobs_mutable()->erase(blob_uuid);
+ }
+}
+
+size_t BlobEntry::GetUnsharedMemoryUsage() const {
+ size_t memory = 0;
+ base::hash_set<void*> seen_items;
+ for (const auto& data_item : items_) {
+ if (!IsBytes(data_item->item()->type()) ||
+ data_item->referencing_blobs().size() > 1 ||
+ seen_items.find(data_item.get()) != seen_items.end()) {
+ continue;
+ }
+ memory += data_item->item()->length();
+ seen_items.insert(data_item.get());
+ }
+ return memory;
+}
+
+} // namespace storage

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