IPC::Message -> base::Pickle

ppapi/proxy/raw_var_data.h

 // Copyright (c) 2013 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_RAW_VAR_DATA_H_
 #define PPAPI_PROXY_RAW_VAR_DATA_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 15 matching lines @@
 
 namespace IPC {
 class Message;
 }
 
 namespace ppapi {
 namespace proxy {
 
 class RawVarData;
 
-typedef base::Callback<void(IPC::Message*, const SerializedHandle&)>
+typedef base::Callback<void(base::Pickle*, const SerializedHandle&)>
     HandleWriter;
 
 // Contains the data associated with a graph of connected PP_Vars. Useful for
 // serializing/deserializing a graph of PP_Vars. First we compute the transitive
 // closure of the given PP_Var to find all PP_Vars which are referenced by that
 // var. A RawVarData object is created for each of these vars. We then write
 // data contained in each RawVarData to the message. The format looks like this:
 //    idx | size     | (number of vars in the graph)
 //     0  | var type |
 //        | var data |
@@ skipping 16 matching lines @@
   RawVarDataGraph();
   ~RawVarDataGraph();
 
   // Construct a new PP_Var from the graph. All of the PP_Vars referenced by
   // the returned PP_Var are also constructed. Each PP_Var created has a
   // ref-count equal to the number of references it has in the graph of vars.
   // The returned var (the "root") has one additional reference.
   PP_Var CreatePPVar(PP_Instance instance);
 
   // Write the graph to a message using the given HandleWriter.
-  void Write(IPC::Message* m, const HandleWriter& handle_writer);
+  void Write(base::Pickle* m, const HandleWriter& handle_writer);
 
   // Create a RawVarDataGraph from the given message.
-  static scoped_ptr<RawVarDataGraph> Read(const IPC::Message* m,
+  static scoped_ptr<RawVarDataGraph> Read(const base::Pickle* m,
                                           base::PickleIterator* iter);
 
   // Returns a vector of SerializedHandles associated with this RawVarDataGraph.
   // Ownership of the pointers remains with the elements of the RawVarDataGraph.
   std::vector<SerializedHandle*> GetHandles();
 
   // Sets the threshold size at which point we switch from transmitting
   // array buffers in IPC messages to using shared memory. This is only used
   // for testing purposes where we need to transmit small buffers using shmem
   // (in order to have fast tests).
@@ skipping 23 matching lines @@
   // Create a PP_Var from the raw data contained in this object.
   virtual PP_Var CreatePPVar(PP_Instance instance) = 0;
   // Some PP_Vars may require 2-step initialization. For example, they may
   // reference other PP_Vars which had not yet been created when |CreatePPVar|
   // was called. The original var created with |CreatePPVar| is passed back in,
   // along with the graph it is a part of to be initialized.
   virtual void PopulatePPVar(const PP_Var& var,
                              const std::vector<PP_Var>& graph) = 0;
 
   // Writes the RawVarData to a message.
-  virtual void Write(IPC::Message* m,
-                     const HandleWriter& handle_writer) = 0;
+  virtual void Write(base::Pickle* m, const HandleWriter& handle_writer) = 0;
   // Reads the RawVarData from a message. Returns true on success.
   virtual bool Read(PP_VarType type,
-                    const IPC::Message* m,
+                    const base::Pickle* m,
                     base::PickleIterator* iter) = 0;
 
   // Returns a SerializedHandle associated with this RawVarData or NULL if none
   // exists. Ownership of the pointer remains with the RawVarData.
   virtual SerializedHandle* GetHandle();
 
   bool initialized() { return initialized_; }
 
  protected:
   bool initialized_;
 };
 
 // A RawVarData class for PP_Vars which are value types.
 class BasicRawVarData : public RawVarData {
  public:
   BasicRawVarData();
   ~BasicRawVarData() override;
 
   // RawVarData implementation.
   PP_VarType Type() override;
   bool Init(const PP_Var& var, PP_Instance instance) override;
   PP_Var CreatePPVar(PP_Instance instance) override;
   void PopulatePPVar(const PP_Var& var,
                      const std::vector<PP_Var>& graph) override;
-  void Write(IPC::Message* m, const HandleWriter& handle_writer) override;
+  void Write(base::Pickle* m, const HandleWriter& handle_writer) override;
   bool Read(PP_VarType type,
-            const IPC::Message* m,
+            const base::Pickle* m,
             base::PickleIterator* iter) override;
 
  private:
   PP_Var var_;
 };
 
 // A RawVarData class for string PP_Vars.
 class StringRawVarData : public RawVarData {
  public:
   StringRawVarData();
   ~StringRawVarData() override;
 
   // RawVarData implementation.
   PP_VarType Type() override;
   bool Init(const PP_Var& var, PP_Instance instance) override;
   PP_Var CreatePPVar(PP_Instance instance) override;
   void PopulatePPVar(const PP_Var& var,
                      const std::vector<PP_Var>& graph) override;
-  void Write(IPC::Message* m, const HandleWriter& handle_writer) override;
+  void Write(base::Pickle* m, const HandleWriter& handle_writer) override;
   bool Read(PP_VarType type,
-            const IPC::Message* m,
+            const base::Pickle* m,
             base::PickleIterator* iter) override;
 
  private:
   // The data in the string.
   std::string data_;
 };
 
 // A RawVarData class for array buffer PP_Vars.
 class ArrayBufferRawVarData : public RawVarData {
  public:
   // Enum for array buffer message types.
   enum ShmemType {
     ARRAY_BUFFER_NO_SHMEM,
     ARRAY_BUFFER_SHMEM_HOST,
     ARRAY_BUFFER_SHMEM_PLUGIN,
   };
 
   ArrayBufferRawVarData();
   ~ArrayBufferRawVarData() override;
 
   // RawVarData implementation.
   PP_VarType Type() override;
   bool Init(const PP_Var& var, PP_Instance instance) override;
   PP_Var CreatePPVar(PP_Instance instance) override;
   void PopulatePPVar(const PP_Var& var,
                      const std::vector<PP_Var>& graph) override;
-  void Write(IPC::Message* m, const HandleWriter& handle_writer) override;
+  void Write(base::Pickle* m, const HandleWriter& handle_writer) override;
   bool Read(PP_VarType type,
-            const IPC::Message* m,
+            const base::Pickle* m,
             base::PickleIterator* iter) override;
   SerializedHandle* GetHandle() override;
 
  private:
   // The type of the storage underlying the array buffer.
   ShmemType type_;
   // The data in the buffer. Valid for |type_| == ARRAY_BUFFER_NO_SHMEM.
   std::string data_;
   // Host shmem handle. Valid for |type_| == ARRAY_BUFFER_SHMEM_HOST.
   int host_shm_handle_id_;
   // Plugin shmem handle. Valid for |type_| == ARRAY_BUFFER_SHMEM_PLUGIN.
   SerializedHandle plugin_shm_handle_;
 };
 
 // A RawVarData class for array PP_Vars.
 class ArrayRawVarData : public RawVarData {
  public:
   ArrayRawVarData();
   ~ArrayRawVarData() override;
 
   void AddChild(size_t element);
 
   // RawVarData implementation.
   PP_VarType Type() override;
   bool Init(const PP_Var& var, PP_Instance instance) override;
   PP_Var CreatePPVar(PP_Instance instance) override;
   void PopulatePPVar(const PP_Var& var,
                      const std::vector<PP_Var>& graph) override;
-  void Write(IPC::Message* m, const HandleWriter& handle_writer) override;
+  void Write(base::Pickle* m, const HandleWriter& handle_writer) override;
   bool Read(PP_VarType type,
-            const IPC::Message* m,
+            const base::Pickle* m,
             base::PickleIterator* iter) override;
 
  private:
   std::vector<size_t> children_;
 };
 
 // A RawVarData class for dictionary PP_Vars.
 class DictionaryRawVarData : public RawVarData {
  public:
   DictionaryRawVarData();
   ~DictionaryRawVarData() override;
 
   void AddChild(const std::string& key, size_t value);
 
   // RawVarData implementation.
   PP_VarType Type() override;
   bool Init(const PP_Var& var, PP_Instance instance) override;
   PP_Var CreatePPVar(PP_Instance instance) override;
   void PopulatePPVar(const PP_Var& var,
                      const std::vector<PP_Var>& graph) override;
-  void Write(IPC::Message* m, const HandleWriter& handle_writer) override;
+  void Write(base::Pickle* m, const HandleWriter& handle_writer) override;
   bool Read(PP_VarType type,
-            const IPC::Message* m,
+            const base::Pickle* m,
             base::PickleIterator* iter) override;
 
  private:
   std::vector<std::pair<std::string, size_t> > children_;
 };
 
 // A RawVarData class for resource PP_Vars.
 // This class does not hold a reference on the PP_Resource that is being
 // serialized. If sending a resource from the plugin to the host, the plugin
 // should not release the ResourceVar before sending the serialized message to
 // the host, and the host should immediately consume the ResourceVar before
 // processing further messages.
 class ResourceRawVarData : public RawVarData {
  public:
   ResourceRawVarData();
   ~ResourceRawVarData() override;
 
   // RawVarData implementation.
   PP_VarType Type() override;
   bool Init(const PP_Var& var, PP_Instance instance) override;
   PP_Var CreatePPVar(PP_Instance instance) override;
   void PopulatePPVar(const PP_Var& var,
                      const std::vector<PP_Var>& graph) override;
-  void Write(IPC::Message* m, const HandleWriter& handle_writer) override;
+  void Write(base::Pickle* m, const HandleWriter& handle_writer) override;
   bool Read(PP_VarType type,
-            const IPC::Message* m,
+            const base::Pickle* m,
             base::PickleIterator* iter) override;
 
  private:
   // Resource ID in the plugin. If one has not yet been created, this is 0.
   // This is a borrowed reference; the resource's refcount is not incremented.
   PP_Resource pp_resource_;
 
   // Pending resource host ID in the renderer.
   int pending_renderer_host_id_;
 
   // Pending resource host ID in the browser.
   int pending_browser_host_id_;
 
   // A message containing information about how to create a plugin-side
   // resource. The message type will vary based on the resource type, and will
   // usually contain a pending resource host ID, and other required information.
   // If the resource was created directly, this is NULL.
   scoped_ptr<IPC::Message> creation_message_;
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_RAW_VAR_DATA_H_