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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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