| // 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. |
| |
| #include "ppapi/proxy/host_var_serialization_rules.h" |
| |
| #include "ppapi/shared_impl/ppapi_globals.h" |
| #include "ppapi/shared_impl/var_tracker.h" |
| |
| using ppapi::PpapiGlobals; |
| using ppapi::VarTracker; |
| |
| namespace ppapi { |
| namespace proxy { |
| |
| HostVarSerializationRules::HostVarSerializationRules() { |
| } |
| |
| HostVarSerializationRules::~HostVarSerializationRules() { |
| } |
| |
| PP_Var HostVarSerializationRules::SendCallerOwned(const PP_Var& var) { |
| return var; |
| } |
| |
| PP_Var HostVarSerializationRules::BeginReceiveCallerOwned(const PP_Var& var) { |
| return var; |
| } |
| |
| void HostVarSerializationRules::EndReceiveCallerOwned(const PP_Var& var) { |
| if (var.type != PP_VARTYPE_OBJECT && var.type >= PP_VARTYPE_STRING) { |
| // Release our reference to the local Var. |
| PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var); |
| } |
| } |
| |
| PP_Var HostVarSerializationRules::ReceivePassRef(const PP_Var& var) { |
| // See PluginVarSerialization::BeginSendPassRef for an example. |
| if (var.type == PP_VARTYPE_OBJECT) |
| PpapiGlobals::Get()->GetVarTracker()->AddRefVar(var); |
| return var; |
| } |
| |
| PP_Var HostVarSerializationRules::BeginSendPassRef(const PP_Var& var) { |
| return var; |
| } |
| |
| void HostVarSerializationRules::EndSendPassRef(const PP_Var& var) { |
| // See PluginVarSerializationRules::ReceivePassRef for an example. We don't |
| // need to do anything here for "Object" vars; we continue holding one ref on |
| // behalf of the plugin. |
| if (var.type != PP_VARTYPE_OBJECT) { |
| // But for other ref-counted types (like String, Array, and Dictionary), |
| // the value will be re-constituted on the other side as a new Var with no |
| // connection to the host-side reference counting. We must therefore release |
| // our reference count; this is roughly equivalent to passing the ref to the |
| // plugin. |
| PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var); |
| } |
| } |
| |
| void HostVarSerializationRules::ReleaseObjectRef(const PP_Var& var) { |
| PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var); |
| } |
| |
| } // namespace proxy |
| } // namespace ppapi |