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| 1 // Copyright (c) 2012 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/media_galleries/fileapi/mtp_device_map_service.h" | 5 #include "chrome/browser/media_galleries/fileapi/mtp_device_map_service.h" |
| 6 | 6 |
| 7 #include <string> | 7 #include <string> |
| 8 #include <utility> | 8 #include <utility> |
| 9 | 9 |
| 10 #include "base/stl_util.h" | 10 #include "base/stl_util.h" |
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| 21 | 21 |
| 22 // static | 22 // static |
| 23 MTPDeviceMapService* MTPDeviceMapService::GetInstance() { | 23 MTPDeviceMapService* MTPDeviceMapService::GetInstance() { |
| 24 return g_mtp_device_map_service.Pointer(); | 24 return g_mtp_device_map_service.Pointer(); |
| 25 } | 25 } |
| 26 | 26 |
| 27 void MTPDeviceMapService::RegisterMTPFileSystem( | 27 void MTPDeviceMapService::RegisterMTPFileSystem( |
| 28 const base::FilePath::StringType& device_location, | 28 const base::FilePath::StringType& device_location, |
| 29 const std::string& filesystem_id, | 29 const std::string& filesystem_id, |
| 30 const bool read_only) { | 30 const bool read_only) { |
| 31 #if defined(OS_ANDROID) |
| 32 // No CreateMTPDeviceAsyncDelegate implementation |
| 33 NOTIMPLEMENTED(); |
| 34 #else |
| 31 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); | 35 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
| 32 DCHECK(!device_location.empty()); | 36 DCHECK(!device_location.empty()); |
| 33 DCHECK(!filesystem_id.empty()); | 37 DCHECK(!filesystem_id.empty()); |
| 34 | 38 |
| 35 const AsyncDelegateKey key = GetAsyncDelegateKey(device_location, read_only); | 39 const AsyncDelegateKey key = GetAsyncDelegateKey(device_location, read_only); |
| 36 if (!ContainsKey(mtp_device_usage_map_, key)) { | 40 if (!ContainsKey(mtp_device_usage_map_, key)) { |
| 37 // Note that this initializes the delegate asynchronously, but since | 41 // Note that this initializes the delegate asynchronously, but since |
| 38 // the delegate will only be used from the IO thread, it is guaranteed | 42 // the delegate will only be used from the IO thread, it is guaranteed |
| 39 // to be created before use of it expects it to be there. | 43 // to be created before use of it expects it to be there. |
| 40 CreateMTPDeviceAsyncDelegate( | 44 CreateMTPDeviceAsyncDelegate( |
| 41 device_location, read_only, | 45 device_location, read_only, |
| 42 base::Bind(&MTPDeviceMapService::AddAsyncDelegate, | 46 base::Bind(&MTPDeviceMapService::AddAsyncDelegate, |
| 43 base::Unretained(this), device_location, read_only)); | 47 base::Unretained(this), device_location, read_only)); |
| 44 mtp_device_usage_map_[key] = 0; | 48 mtp_device_usage_map_[key] = 0; |
| 45 } | 49 } |
| 46 | 50 |
| 47 mtp_device_usage_map_[key]++; | 51 mtp_device_usage_map_[key]++; |
| 48 mtp_device_map_[filesystem_id] = make_pair(device_location, read_only); | 52 mtp_device_map_[filesystem_id] = make_pair(device_location, read_only); |
| 53 #endif |
| 49 } | 54 } |
| 50 | 55 |
| 51 void MTPDeviceMapService::RevokeMTPFileSystem( | 56 void MTPDeviceMapService::RevokeMTPFileSystem( |
| 52 const std::string& filesystem_id) { | 57 const std::string& filesystem_id) { |
| 58 #if defined(OS_ANDROID) |
| 59 // No RemoveAsyncDelegate implementation |
| 60 NOTIMPLEMENTED(); |
| 61 #else |
| 53 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); | 62 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
| 54 DCHECK(!filesystem_id.empty()); | 63 DCHECK(!filesystem_id.empty()); |
| 55 | 64 |
| 56 MTPDeviceFileSystemMap::iterator it = mtp_device_map_.find(filesystem_id); | 65 MTPDeviceFileSystemMap::iterator it = mtp_device_map_.find(filesystem_id); |
| 57 if (it != mtp_device_map_.end()) { | 66 if (it != mtp_device_map_.end()) { |
| 58 const base::FilePath::StringType device_location = it->second.first; | 67 const base::FilePath::StringType device_location = it->second.first; |
| 59 const bool read_only = it->second.second; | 68 const bool read_only = it->second.second; |
| 60 | 69 |
| 61 mtp_device_map_.erase(it); | 70 mtp_device_map_.erase(it); |
| 62 | 71 |
| 63 const AsyncDelegateKey key = | 72 const AsyncDelegateKey key = |
| 64 GetAsyncDelegateKey(device_location, read_only); | 73 GetAsyncDelegateKey(device_location, read_only); |
| 65 MTPDeviceUsageMap::iterator delegate_it = mtp_device_usage_map_.find(key); | 74 MTPDeviceUsageMap::iterator delegate_it = mtp_device_usage_map_.find(key); |
| 66 DCHECK(delegate_it != mtp_device_usage_map_.end()); | 75 DCHECK(delegate_it != mtp_device_usage_map_.end()); |
| 67 | 76 |
| 68 mtp_device_usage_map_[key]--; | 77 mtp_device_usage_map_[key]--; |
| 69 if (mtp_device_usage_map_[key] == 0) { | 78 if (mtp_device_usage_map_[key] == 0) { |
| 70 mtp_device_usage_map_.erase(delegate_it); | 79 mtp_device_usage_map_.erase(delegate_it); |
| 71 RemoveAsyncDelegate(device_location, read_only); | 80 RemoveAsyncDelegate(device_location, read_only); |
| 72 } | 81 } |
| 73 } | 82 } |
| 83 #endif |
| 74 } | 84 } |
| 75 | 85 |
| 76 void MTPDeviceMapService::AddAsyncDelegate( | 86 void MTPDeviceMapService::AddAsyncDelegate( |
| 77 const base::FilePath::StringType& device_location, | 87 const base::FilePath::StringType& device_location, |
| 78 const bool read_only, | 88 const bool read_only, |
| 79 MTPDeviceAsyncDelegate* delegate) { | 89 MTPDeviceAsyncDelegate* delegate) { |
| 80 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); | 90 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
| 81 DCHECK(delegate); | 91 DCHECK(delegate); |
| 82 DCHECK(!device_location.empty()); | 92 DCHECK(!device_location.empty()); |
| 83 | 93 |
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| 144 ? async_delegate_map_it->second | 154 ? async_delegate_map_it->second |
| 145 : NULL; | 155 : NULL; |
| 146 } | 156 } |
| 147 | 157 |
| 148 MTPDeviceMapService::MTPDeviceMapService() { | 158 MTPDeviceMapService::MTPDeviceMapService() { |
| 149 } | 159 } |
| 150 | 160 |
| 151 MTPDeviceMapService::~MTPDeviceMapService() { | 161 MTPDeviceMapService::~MTPDeviceMapService() { |
| 152 DCHECK(mtp_device_usage_map_.empty()); | 162 DCHECK(mtp_device_usage_map_.empty()); |
| 153 } | 163 } |
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