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 "storage/common/blob/scoped_file.h"
6
7 #include "base/bind.h"
8 #include "base/callback.h"
9 #include "base/files/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
ScopedFile()16 ScopedFile::ScopedFile()
17 : scope_out_policy_(DONT_DELETE_ON_SCOPE_OUT) {
18 }
19
ScopedFile(const base::FilePath & path,ScopeOutPolicy policy,const scoped_refptr<base::TaskRunner> & file_task_runner)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.get();
30 }
31
ScopedFile(RValue other)32 ScopedFile::ScopedFile(RValue other) {
33 MoveFrom(*other.object);
34 }
35
~ScopedFile()36 ScopedFile::~ScopedFile() {
37 Reset();
38 }
39
AddScopeOutCallback(const ScopeOutCallback & callback,base::TaskRunner * callback_runner)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
Release()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
Reset()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
MoveFrom(ScopedFile & other)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
86