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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. | |
4 | |
5 #include "webkit/common/blob/scoped_file.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "base/callback.h" | |
9 #include "base/file_util.h" | |
10 #include "base/location.h" | |
11 #include "base/message_loop/message_loop_proxy.h" | |
12 #include "base/task_runner.h" | |
13 | |
14 namespace storage { | |
15 | |
16 ScopedFile::ScopedFile() | |
17 : scope_out_policy_(DONT_DELETE_ON_SCOPE_OUT) { | |
18 } | |
19 | |
20 ScopedFile::ScopedFile(const base::FilePath& path, | |
21 ScopeOutPolicy policy, | |
22 const scoped_refptr<base::TaskRunner>& file_task_runner) | |
23 : path_(path), | |
24 scope_out_policy_(policy), | |
25 file_task_runner_(file_task_runner) { | |
26 DCHECK(path.empty() || policy != DELETE_ON_SCOPE_OUT || | |
27 file_task_runner.get()) | |
28 << "path:" << path.value() << " policy:" << policy | |
29 << " runner:" << file_task_runner; | |
30 } | |
31 | |
32 ScopedFile::ScopedFile(RValue other) { | |
33 MoveFrom(*other.object); | |
34 } | |
35 | |
36 ScopedFile::~ScopedFile() { | |
37 Reset(); | |
38 } | |
39 | |
40 void ScopedFile::AddScopeOutCallback( | |
41 const ScopeOutCallback& callback, | |
42 base::TaskRunner* callback_runner) { | |
43 if (!callback_runner) | |
44 callback_runner = base::MessageLoopProxy::current().get(); | |
45 scope_out_callbacks_.push_back(std::make_pair(callback, callback_runner)); | |
46 } | |
47 | |
48 base::FilePath ScopedFile::Release() { | |
49 base::FilePath path = path_; | |
50 path_.clear(); | |
51 scope_out_callbacks_.clear(); | |
52 scope_out_policy_ = DONT_DELETE_ON_SCOPE_OUT; | |
53 return path; | |
54 } | |
55 | |
56 void ScopedFile::Reset() { | |
57 if (path_.empty()) | |
58 return; | |
59 | |
60 for (ScopeOutCallbackList::iterator iter = scope_out_callbacks_.begin(); | |
61 iter != scope_out_callbacks_.end(); ++iter) { | |
62 iter->second->PostTask(FROM_HERE, base::Bind(iter->first, path_)); | |
63 } | |
64 | |
65 if (scope_out_policy_ == DELETE_ON_SCOPE_OUT) { | |
66 file_task_runner_->PostTask( | |
67 FROM_HERE, | |
68 base::Bind(base::IgnoreResult(&base::DeleteFile), | |
69 path_, false /* recursive */)); | |
70 } | |
71 | |
72 // Clear all fields. | |
73 Release(); | |
74 } | |
75 | |
76 void ScopedFile::MoveFrom(ScopedFile& other) { | |
77 Reset(); | |
78 | |
79 scope_out_policy_ = other.scope_out_policy_; | |
80 scope_out_callbacks_.swap(other.scope_out_callbacks_); | |
81 file_task_runner_ = other.file_task_runner_; | |
82 path_ = other.Release(); | |
83 } | |
84 | |
85 } // namespace storage | |
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