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// 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;
}
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());
PluginDispatcher* dispatcher =
PluginDispatcher::GetForInstance(object->pp_instance());
if (dispatcher) {
// 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
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