blob: c88f594dcc9a980b366218072d99d5de5dc20bed (
plain)
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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
// Copyright 2013 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 EXTENSIONS_BROWSER_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_
#define EXTENSIONS_BROWSER_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_
#include <set>
#include "base/lazy_instance.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/observer_list_threadsafe.h"
#include "extensions/browser/api/system_info/system_info_provider.h"
#include "extensions/common/api/system_storage.h"
namespace storage_monitor {
class StorageInfo;
}
namespace extensions {
namespace systeminfo {
// Build StorageUnitInfo struct from StorageInfo instance. The |unit|
// parameter is the output value.
void BuildStorageUnitInfo(const storage_monitor::StorageInfo& info,
api::system_storage::StorageUnitInfo* unit);
} // namespace systeminfo
typedef std::vector<linked_ptr<api::system_storage::StorageUnitInfo>>
StorageUnitInfoList;
class StorageInfoProvider : public SystemInfoProvider {
public:
typedef base::Callback<void(const std::string&, double)>
GetStorageFreeSpaceCallback;
// Get the single shared instance of StorageInfoProvider.
static StorageInfoProvider* Get();
// SystemInfoProvider implementations
void PrepareQueryOnUIThread() override;
void InitializeProvider(const base::Closure& do_query_info_callback) override;
virtual double GetStorageFreeSpaceFromTransientIdOnFileThread(
const std::string& transient_id);
const StorageUnitInfoList& storage_unit_info_list() const;
static void InitializeForTesting(scoped_refptr<StorageInfoProvider> provider);
protected:
StorageInfoProvider();
~StorageInfoProvider() override;
// Put all available storages' information into |info_|.
void GetAllStoragesIntoInfoList();
// The last information filled up by QueryInfo and is accessed on multiple
// threads, but the whole class is being guarded by SystemInfoProvider base
// class.
//
// |info_| is accessed on the UI thread while |is_waiting_for_completion_| is
// false and on the sequenced worker pool while |is_waiting_for_completion_|
// is true.
StorageUnitInfoList info_;
private:
// SystemInfoProvider implementations.
// Override to query the available capacity of all known storage devices on
// the blocking pool, including fixed and removable devices.
bool QueryInfo() override;
static base::LazyInstance<scoped_refptr<StorageInfoProvider> > provider_;
DISALLOW_COPY_AND_ASSIGN(StorageInfoProvider);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_
|
