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// Copyright (c) 2011 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/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/tracker_base.h"
#include "ppapi/shared_impl/var.h"
namespace ppapi {
namespace proxy {
namespace {
// When non-NULL, this object overrides the ResourceTrackerSingleton.
PluginResourceTracker* g_resource_tracker_override = NULL;
TrackerBase* GetTrackerBase() {
return PluginResourceTracker::GetInstance();
}
} // namespace
PluginResourceTracker::PluginResourceTracker()
: var_tracker_test_override_(NULL) {
#ifdef ENABLE_PEPPER_THREADING
// Set the global proxy lock, since the plugin-side of the proxy needs to be
// synchronized.
ppapi::ProxyLock::Set(&proxy_lock_);
#endif
}
PluginResourceTracker::~PluginResourceTracker() {
#ifdef ENABLE_PEPPER_THREADING
ppapi::ProxyLock::Reset();
#endif
}
// static
void PluginResourceTracker::SetInstanceForTest(PluginResourceTracker* tracker) {
g_resource_tracker_override = tracker;
}
// static
PluginResourceTracker* PluginResourceTracker::GetInstance() {
if (g_resource_tracker_override)
return g_resource_tracker_override;
return Singleton<PluginResourceTracker>::get();
}
// static
TrackerBase* PluginResourceTracker::GetTrackerBaseInstance() {
return GetInstance();
}
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;
}
FunctionGroupBase* PluginResourceTracker::GetFunctionAPI(PP_Instance inst,
InterfaceID id) {
PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(inst);
if (dispatcher)
return dispatcher->GetFunctionAPI(id);
return NULL;
}
VarTracker* PluginResourceTracker::GetVarTracker() {
return &var_tracker();
}
ResourceTracker* PluginResourceTracker::GetResourceTracker() {
return this;
}
PP_Module PluginResourceTracker::GetModuleForInstance(PP_Instance instance) {
// Currently proxied plugins don't use the PP_Module for anything useful.
return 0;
}
PP_Resource PluginResourceTracker::AddResource(Resource* object) {
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(
INTERFACE_ID_PPB_CORE, object->host_resource()));
}
}
}
} // namespace proxy
} // namespace ppapi
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