| // 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/plugin_resource_tracker.h" |
| |
| #include "base/logging.h" |
| #include "base/memory/singleton.h" |
| #include "ppapi/proxy/plugin_dispatcher.h" |
| #include "ppapi/proxy/plugin_globals.h" |
| #include "ppapi/proxy/ppapi_messages.h" |
| #include "ppapi/proxy/serialized_var.h" |
| #include "ppapi/shared_impl/proxy_lock.h" |
| #include "ppapi/shared_impl/resource.h" |
| #include "ppapi/shared_impl/var.h" |
| |
| namespace ppapi { |
| namespace proxy { |
| |
| PluginResourceTracker::PluginResourceTracker() : ResourceTracker(THREAD_SAFE) { |
| UseOddResourceValueInDebugMode(); |
| } |
| |
| PluginResourceTracker::~PluginResourceTracker() { |
| } |
| |
| PP_Resource PluginResourceTracker::PluginResourceForHostResource( |
| const HostResource& resource) const { |
| HostResourceMap::const_iterator found = host_resource_map_.find(resource); |
| if (found == host_resource_map_.end()) |
| return 0; |
| return found->second; |
| } |
| |
| void PluginResourceTracker::AbandonResource(PP_Resource res) { |
| DCHECK(GetResource(res)); |
| bool inserted = abandoned_resources_.insert(res).second; |
| DCHECK(inserted); |
| |
| ReleaseResource(res); |
| } |
| |
| PP_Resource PluginResourceTracker::AddResource(Resource* object) { |
| // If there's a HostResource, it must not be added twice. |
| DCHECK(!object->host_resource().host_resource() || |
| (host_resource_map_.find(object->host_resource()) == |
| host_resource_map_.end())); |
| |
| PP_Resource ret = ResourceTracker::AddResource(object); |
| |
| // Some resources are plugin-only, so they don't have a host resource. |
| if (object->host_resource().host_resource()) |
| host_resource_map_.insert(std::make_pair(object->host_resource(), ret)); |
| return ret; |
| } |
| |
| void PluginResourceTracker::RemoveResource(Resource* object) { |
| ResourceTracker::RemoveResource(object); |
| |
| if (!object->host_resource().is_null()) { |
| // The host_resource will be NULL for proxy-only resources, which we |
| // obviously don't need to tell the host about. |
| DCHECK(host_resource_map_.find(object->host_resource()) != |
| host_resource_map_.end()); |
| host_resource_map_.erase(object->host_resource()); |
| |
| bool abandoned = false; |
| auto it = abandoned_resources_.find(object->pp_resource()); |
| if (it != abandoned_resources_.end()) { |
| abandoned = true; |
| abandoned_resources_.erase(it); |
| } |
| |
| PluginDispatcher* dispatcher = |
| PluginDispatcher::GetForInstance(object->pp_instance()); |
| if (dispatcher && !abandoned) { |
| // The dispatcher can be NULL if the plugin held on to a resource after |
| // the instance was destroyed. In that case the browser-side resource has |
| // already been freed correctly on the browser side. |
| dispatcher->Send(new PpapiHostMsg_PPBCore_ReleaseResource( |
| API_ID_PPB_CORE, object->host_resource())); |
| } |
| } |
| } |
| |
| } // namespace proxy |
| } // namespace ppapi |