1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "webkit/browser/blob/blob_data_handle.h"
8 #include "base/location.h"
9 #include "base/logging.h"
10 #include "base/sequenced_task_runner.h"
11 #include "webkit/browser/blob/blob_storage_context.h"
12 #include "webkit/common/blob/blob_data.h"
14 namespace webkit_blob {
16 BlobDataHandle::BlobDataHandleShared::BlobDataHandleShared(
18 BlobStorageContext* context,
19 base::SequencedTaskRunner* task_runner)
20 : blob_data_(blob_data),
21 context_(context->AsWeakPtr()) {
22 context_->IncrementBlobRefCount(blob_data->uuid());
25 BlobData* BlobDataHandle::BlobDataHandleShared::data() const {
29 const std::string& BlobDataHandle::BlobDataHandleShared::uuid() const {
30 return blob_data_->uuid();
33 BlobDataHandle::BlobDataHandleShared::~BlobDataHandleShared() {
35 context_->DecrementBlobRefCount(blob_data_->uuid());
38 BlobDataHandle::BlobDataHandle(BlobData* blob_data,
39 BlobStorageContext* context,
40 base::SequencedTaskRunner* task_runner)
41 : io_task_runner_(task_runner),
42 shared_(new BlobDataHandleShared(blob_data, context, task_runner)) {
43 DCHECK(io_task_runner_);
44 DCHECK(io_task_runner_->RunsTasksOnCurrentThread());
47 BlobDataHandle::BlobDataHandle(const BlobDataHandle& other) {
48 io_task_runner_ = other.io_task_runner_;
49 shared_ = other.shared_;
52 BlobDataHandle::~BlobDataHandle() {
53 BlobDataHandleShared* raw = shared_.get();
56 io_task_runner_->ReleaseSoon(FROM_HERE, raw);
59 BlobData* BlobDataHandle::data() const {
60 DCHECK(io_task_runner_->RunsTasksOnCurrentThread());
61 return shared_->data();
64 std::string BlobDataHandle::uuid() const {
65 return shared_->uuid();
68 } // namespace webkit_blob