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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/sessions/session_backend.h" | 5 #include "chrome/browser/sessions/session_backend.h" |
6 | 6 |
7 #include <limits> | 7 #include <limits> |
8 | 8 |
9 #include "base/file_util.h" | 9 #include "base/file_util.h" |
10 #include "base/memory/scoped_vector.h" | 10 #include "base/memory/scoped_vector.h" |
11 #include "base/metrics/histogram.h" | 11 #include "base/metrics/histogram.h" |
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38 class SessionFileReader { | 38 class SessionFileReader { |
39 public: | 39 public: |
40 typedef SessionCommand::id_type id_type; | 40 typedef SessionCommand::id_type id_type; |
41 typedef SessionCommand::size_type size_type; | 41 typedef SessionCommand::size_type size_type; |
42 | 42 |
43 explicit SessionFileReader(const FilePath& path) | 43 explicit SessionFileReader(const FilePath& path) |
44 : errored_(false), | 44 : errored_(false), |
45 buffer_(SessionBackend::kFileReadBufferSize, 0), | 45 buffer_(SessionBackend::kFileReadBufferSize, 0), |
46 buffer_position_(0), | 46 buffer_position_(0), |
47 available_count_(0) { | 47 available_count_(0) { |
48 file_.reset(new net::FileStream()); | 48 file_.reset(new net::FileStream(NULL)); |
49 if (file_util::PathExists(path)) | 49 if (file_util::PathExists(path)) |
50 file_->Open(path, base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ); | 50 file_->Open(path, base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ); |
51 } | 51 } |
52 // Reads the contents of the file specified in the constructor, returning | 52 // Reads the contents of the file specified in the constructor, returning |
53 // true on success. It is up to the caller to free all SessionCommands | 53 // true on success. It is up to the caller to free all SessionCommands |
54 // added to commands. | 54 // added to commands. |
55 bool Read(BaseSessionService::SessionType type, | 55 bool Read(BaseSessionService::SessionType type, |
56 std::vector<SessionCommand*>* commands); | 56 std::vector<SessionCommand*>* commands); |
57 | 57 |
58 private: | 58 private: |
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356 if (current_session_file_->Truncate(header_size) != header_size) | 356 if (current_session_file_->Truncate(header_size) != header_size) |
357 current_session_file_.reset(NULL); | 357 current_session_file_.reset(NULL); |
358 } | 358 } |
359 if (!current_session_file_.get()) | 359 if (!current_session_file_.get()) |
360 current_session_file_.reset(OpenAndWriteHeader(GetCurrentSessionPath())); | 360 current_session_file_.reset(OpenAndWriteHeader(GetCurrentSessionPath())); |
361 empty_file_ = true; | 361 empty_file_ = true; |
362 } | 362 } |
363 | 363 |
364 net::FileStream* SessionBackend::OpenAndWriteHeader(const FilePath& path) { | 364 net::FileStream* SessionBackend::OpenAndWriteHeader(const FilePath& path) { |
365 DCHECK(!path.empty()); | 365 DCHECK(!path.empty()); |
366 scoped_ptr<net::FileStream> file(new net::FileStream()); | 366 scoped_ptr<net::FileStream> file(new net::FileStream(NULL)); |
367 if (file->Open(path, base::PLATFORM_FILE_CREATE_ALWAYS | | 367 if (file->Open(path, base::PLATFORM_FILE_CREATE_ALWAYS | |
368 base::PLATFORM_FILE_WRITE | base::PLATFORM_FILE_EXCLUSIVE_WRITE | | 368 base::PLATFORM_FILE_WRITE | base::PLATFORM_FILE_EXCLUSIVE_WRITE | |
369 base::PLATFORM_FILE_EXCLUSIVE_READ) != net::OK) | 369 base::PLATFORM_FILE_EXCLUSIVE_READ) != net::OK) |
370 return NULL; | 370 return NULL; |
371 FileHeader header; | 371 FileHeader header; |
372 header.signature = kFileSignature; | 372 header.signature = kFileSignature; |
373 header.version = kFileCurrentVersion; | 373 header.version = kFileCurrentVersion; |
374 int wrote = file->Write(reinterpret_cast<char*>(&header), | 374 int wrote = file->Write(reinterpret_cast<char*>(&header), |
375 sizeof(header), net::CompletionCallback()); | 375 sizeof(header), net::CompletionCallback()); |
376 if (wrote != sizeof(header)) | 376 if (wrote != sizeof(header)) |
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388 } | 388 } |
389 | 389 |
390 FilePath SessionBackend::GetCurrentSessionPath() { | 390 FilePath SessionBackend::GetCurrentSessionPath() { |
391 FilePath path = path_to_dir_; | 391 FilePath path = path_to_dir_; |
392 if (type_ == BaseSessionService::TAB_RESTORE) | 392 if (type_ == BaseSessionService::TAB_RESTORE) |
393 path = path.AppendASCII(kCurrentTabSessionFileName); | 393 path = path.AppendASCII(kCurrentTabSessionFileName); |
394 else | 394 else |
395 path = path.AppendASCII(kCurrentSessionFileName); | 395 path = path.AppendASCII(kCurrentSessionFileName); |
396 return path; | 396 return path; |
397 } | 397 } |
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