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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "chrome/browser/chromeos/drive/local_file_reader.h" | 5 #include "chrome/browser/chromeos/drive/local_file_reader.h" |
| 6 | 6 |
| 7 #include <errno.h> | 7 #include <errno.h> |
| 8 | 8 |
| 9 #include "base/bind.h" | 9 #include "base/bind.h" |
| 10 #include "base/bind_helpers.h" | 10 #include "base/bind_helpers.h" |
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| 110 base::PlatformFile platform_file_; | 110 base::PlatformFile platform_file_; |
| 111 | 111 |
| 112 DISALLOW_COPY_AND_ASSIGN(ScopedPlatformFile); | 112 DISALLOW_COPY_AND_ASSIGN(ScopedPlatformFile); |
| 113 }; | 113 }; |
| 114 | 114 |
| 115 LocalFileReader::LocalFileReader( | 115 LocalFileReader::LocalFileReader( |
| 116 base::SequencedTaskRunner* sequenced_task_runner) | 116 base::SequencedTaskRunner* sequenced_task_runner) |
| 117 : sequenced_task_runner_(sequenced_task_runner), | 117 : sequenced_task_runner_(sequenced_task_runner), |
| 118 platform_file_(base::kInvalidPlatformFileValue), | 118 platform_file_(base::kInvalidPlatformFileValue), |
| 119 weak_ptr_factory_(this) { | 119 weak_ptr_factory_(this) { |
| 120 DCHECK(sequenced_task_runner_); | 120 DCHECK(sequenced_task_runner_.get()); |
| 121 } | 121 } |
| 122 | 122 |
| 123 LocalFileReader::~LocalFileReader() { | 123 LocalFileReader::~LocalFileReader() { |
| 124 PostCloseIfNeeded(sequenced_task_runner_.get(), platform_file_); | 124 PostCloseIfNeeded(sequenced_task_runner_.get(), platform_file_); |
| 125 } | 125 } |
| 126 | 126 |
| 127 void LocalFileReader::Open(const base::FilePath& file_path, | 127 void LocalFileReader::Open(const base::FilePath& file_path, |
| 128 int64 offset, | 128 int64 offset, |
| 129 const net::CompletionCallback& callback) { | 129 const net::CompletionCallback& callback) { |
| 130 DCHECK(!callback.is_null()); | 130 DCHECK(!callback.is_null()); |
| 131 DCHECK_EQ(base::kInvalidPlatformFileValue, platform_file_); | 131 DCHECK_EQ(base::kInvalidPlatformFileValue, platform_file_); |
| 132 | 132 |
| 133 ScopedPlatformFile* platform_file = | 133 ScopedPlatformFile* platform_file = |
| 134 new ScopedPlatformFile(sequenced_task_runner_); | 134 new ScopedPlatformFile(sequenced_task_runner_.get()); |
| 135 base::PostTaskAndReplyWithResult( | 135 base::PostTaskAndReplyWithResult( |
| 136 sequenced_task_runner_, | 136 sequenced_task_runner_.get(), |
| 137 FROM_HERE, | 137 FROM_HERE, |
| 138 base::Bind(&OpenAndSeekOnBlockingPool, | 138 base::Bind( |
| 139 file_path, offset, platform_file->ptr()), | 139 &OpenAndSeekOnBlockingPool, file_path, offset, platform_file->ptr()), |
| 140 base::Bind(&LocalFileReader::OpenAfterBlockingPoolTask, | 140 base::Bind(&LocalFileReader::OpenAfterBlockingPoolTask, |
| 141 weak_ptr_factory_.GetWeakPtr(), | 141 weak_ptr_factory_.GetWeakPtr(), |
| 142 callback, base::Owned(platform_file))); | 142 callback, |
| 143 base::Owned(platform_file))); |
| 143 } | 144 } |
| 144 | 145 |
| 145 void LocalFileReader::Read(net::IOBuffer* in_buffer, | 146 void LocalFileReader::Read(net::IOBuffer* in_buffer, |
| 146 int buffer_length, | 147 int buffer_length, |
| 147 const net::CompletionCallback& callback) { | 148 const net::CompletionCallback& callback) { |
| 148 DCHECK(!callback.is_null()); | 149 DCHECK(!callback.is_null()); |
| 149 DCHECK_NE(base::kInvalidPlatformFileValue, platform_file_); | 150 DCHECK_NE(base::kInvalidPlatformFileValue, platform_file_); |
| 150 | 151 |
| 151 scoped_refptr<net::IOBuffer> buffer(in_buffer); | 152 scoped_refptr<net::IOBuffer> buffer(in_buffer); |
| 152 base::PostTaskAndReplyWithResult( | 153 base::PostTaskAndReplyWithResult( |
| 153 sequenced_task_runner_, | 154 sequenced_task_runner_.get(), |
| 154 FROM_HERE, | 155 FROM_HERE, |
| 155 base::Bind(&ReadOnBlockingPool, platform_file_, buffer, buffer_length), | 156 base::Bind(&ReadOnBlockingPool, platform_file_, buffer, buffer_length), |
| 156 callback); | 157 callback); |
| 157 } | 158 } |
| 158 | 159 |
| 159 void LocalFileReader::OpenAfterBlockingPoolTask( | 160 void LocalFileReader::OpenAfterBlockingPoolTask( |
| 160 const net::CompletionCallback& callback, | 161 const net::CompletionCallback& callback, |
| 161 ScopedPlatformFile* platform_file, | 162 ScopedPlatformFile* platform_file, |
| 162 int open_result) { | 163 int open_result) { |
| 163 DCHECK(!callback.is_null()); | 164 DCHECK(!callback.is_null()); |
| 164 DCHECK(platform_file); | 165 DCHECK(platform_file); |
| 165 DCHECK_EQ(base::kInvalidPlatformFileValue, platform_file_); | 166 DCHECK_EQ(base::kInvalidPlatformFileValue, platform_file_); |
| 166 | 167 |
| 167 if (open_result == net::OK) { | 168 if (open_result == net::OK) { |
| 168 DCHECK_NE(base::kInvalidPlatformFileValue, *platform_file->ptr()); | 169 DCHECK_NE(base::kInvalidPlatformFileValue, *platform_file->ptr()); |
| 169 platform_file_ = platform_file->release(); | 170 platform_file_ = platform_file->release(); |
| 170 } | 171 } |
| 171 | 172 |
| 172 callback.Run(open_result); | 173 callback.Run(open_result); |
| 173 } | 174 } |
| 174 | 175 |
| 175 } // namespace util | 176 } // namespace util |
| 176 } // namespace drive | 177 } // namespace drive |
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