1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_INDEXED_DB_INSTANCE_BUCKET_CONTEXT_HANDLE_H_
#define CONTENT_BROWSER_INDEXED_DB_INSTANCE_BUCKET_CONTEXT_HANDLE_H_
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
namespace content::indexed_db {
class BucketContext;
// This object tells the BucketContext that there is still something using the
// backing store, and the BucketContext won't close it until all handles are
// destroyed. "Something" means, for example, a `Connection`.
class CONTENT_EXPORT BucketContextHandle {
public:
BucketContextHandle();
explicit BucketContextHandle(BucketContext& bucket_context);
BucketContextHandle(BucketContextHandle&&);
BucketContextHandle& operator=(BucketContextHandle&&);
BucketContextHandle(const BucketContextHandle&);
BucketContextHandle operator=(const BucketContextHandle&);
~BucketContextHandle();
bool IsHeld() const;
void Release();
// Returns null if the factory was destroyed, which should only happen on
// context destruction.
BucketContext* bucket_context() { return bucket_context_.get(); }
BucketContext* operator->() {
CHECK(bucket_context_.get());
return bucket_context_.get();
}
const BucketContext* operator->() const {
CHECK(bucket_context_.get());
return bucket_context_.get();
}
private:
base::WeakPtr<BucketContext> bucket_context_;
};
} // namespace content::indexed_db
#endif // CONTENT_BROWSER_INDEXED_DB_INSTANCE_BUCKET_CONTEXT_HANDLE_H_
|
