| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef PPAPI_PROXY_PLUGIN_VAR_SERIALIZATION_RULES_H_ |
| #define PPAPI_PROXY_PLUGIN_VAR_SERIALIZATION_RULES_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "ppapi/proxy/var_serialization_rules.h" |
| |
| namespace ppapi { |
| namespace proxy { |
| |
| class PluginDispatcher; |
| class PluginVarTracker; |
| |
| // Implementation of the VarSerializationRules interface for the plugin. |
| class PluginVarSerializationRules : public VarSerializationRules { |
| public: |
| // This class will use the given non-owning pointer to the var tracker to |
| // handle object refcounting and string conversion. |
| explicit PluginVarSerializationRules( |
| const base::WeakPtr<PluginDispatcher>& dispatcher); |
| ~PluginVarSerializationRules(); |
| |
| // VarSerialization implementation. |
| virtual PP_Var SendCallerOwned(const PP_Var& var); |
| virtual PP_Var BeginReceiveCallerOwned(const PP_Var& var); |
| virtual void EndReceiveCallerOwned(const PP_Var& var); |
| virtual PP_Var ReceivePassRef(const PP_Var& var); |
| virtual PP_Var BeginSendPassRef(const PP_Var& var); |
| virtual void EndSendPassRef(const PP_Var& var); |
| virtual void ReleaseObjectRef(const PP_Var& var); |
| |
| private: |
| PluginVarTracker* var_tracker_; |
| |
| // In most cases, |dispatcher_| won't be NULL, but you should always check |
| // before using it. |
| // One scenario that it becomes NULL: A SerializedVar holds a ref to this |
| // object, and a sync message is issued. While waiting for the reply to the |
| // sync message, some incoming message causes the dispatcher to be destroyed. |
| // If that happens, we may leak references to object vars. Considering that |
| // scripting has been deprecated, this may not be a big issue. |
| base::WeakPtr<PluginDispatcher> dispatcher_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PluginVarSerializationRules); |
| }; |
| |
| } // namespace proxy |
| } // namespace ppapi |
| |
| #endif // PPAPI_PROXY_PLUGIN_VAR_SERIALIZATION_RULES_H_ |