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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 #ifndef WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_ | 5 #ifndef WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_ |
| 6 #define WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_ | 6 #define WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_ |
| 7 | 7 |
| 8 #include <utility> | 8 #include <utility> |
| 9 | 9 |
| 10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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| 46 // Returns the number of resources associated with this module. | 46 // Returns the number of resources associated with this module. |
| 47 // | 47 // |
| 48 // This is slow, use only for testing. | 48 // This is slow, use only for testing. |
| 49 uint32 GetLiveObjectsForModule(PluginModule* module) const; | 49 uint32 GetLiveObjectsForModule(PluginModule* module) const; |
| 50 | 50 |
| 51 private: | 51 private: |
| 52 friend struct DefaultSingletonTraits<ResourceTracker>; | 52 friend struct DefaultSingletonTraits<ResourceTracker>; |
| 53 friend class Resource; | 53 friend class Resource; |
| 54 | 54 |
| 55 // Prohibit creation other then by the Singleton class. | 55 // Prohibit creation other then by the Singleton class. |
| 56 ResourceTracker() : last_id_(0) {} | 56 ResourceTracker(); |
| 57 ~ResourceTracker() {} | 57 ~ResourceTracker(); |
| 58 | 58 |
| 59 // Adds the given resource to the tracker and assigns it a resource ID and | 59 // Adds the given resource to the tracker and assigns it a resource ID and |
| 60 // refcount of 1. The assigned resource ID will be returned. Used only by the | 60 // refcount of 1. The assigned resource ID will be returned. Used only by the |
| 61 // Resource class. | 61 // Resource class. |
| 62 PP_Resource AddResource(Resource* resource); | 62 PP_Resource AddResource(Resource* resource); |
| 63 | 63 |
| 64 // Last assigned resource ID. | 64 // Last assigned resource ID. |
| 65 PP_Resource last_id_; | 65 PP_Resource last_id_; |
| 66 | 66 |
| 67 // For each PP_Resource, keep the Resource* (as refptr) and plugin use count. | 67 // For each PP_Resource, keep the Resource* (as refptr) and plugin use count. |
| 68 // This use count is different then Resource's RefCount, and is manipulated | 68 // This use count is different then Resource's RefCount, and is manipulated |
| 69 // using this RefResource/UnrefResource. When it drops to zero, we just remove | 69 // using this RefResource/UnrefResource. When it drops to zero, we just remove |
| 70 // the resource from this resource tracker, but the resource object will be | 70 // the resource from this resource tracker, but the resource object will be |
| 71 // alive so long as some scoped_refptr still holds it's reference. This | 71 // alive so long as some scoped_refptr still holds it's reference. This |
| 72 // prevents plugins from forcing destruction of Resource objects. | 72 // prevents plugins from forcing destruction of Resource objects. |
| 73 typedef std::pair<scoped_refptr<Resource>, size_t> ResourceAndRefCount; | 73 typedef std::pair<scoped_refptr<Resource>, size_t> ResourceAndRefCount; |
| 74 typedef base::hash_map<PP_Resource, ResourceAndRefCount> ResourceMap; | 74 typedef base::hash_map<PP_Resource, ResourceAndRefCount> ResourceMap; |
| 75 ResourceMap live_resources_; | 75 ResourceMap live_resources_; |
| 76 | 76 |
| 77 DISALLOW_COPY_AND_ASSIGN(ResourceTracker); | 77 DISALLOW_COPY_AND_ASSIGN(ResourceTracker); |
| 78 }; | 78 }; |
| 79 | 79 |
| 80 } // namespace pepper | 80 } // namespace pepper |
| 81 | 81 |
| 82 #endif // WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_ | 82 #endif // WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_ |
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