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// Copyright (c) 2010 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 WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_
#define WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_
#include <set>
#include "base/atomic_sequence_num.h"
#include "base/basictypes.h"
#include "base/lock.h"
#include "base/ref_counted.h"
#include "base/singleton.h"
typedef struct _pp_Resource PP_Resource;
namespace pepper {
class Resource;
// This class maintains a global list of all live pepper resources. It allows
// us to check resource ID validity and to map them to a specific module.
//
// This object is threadsafe.
class ResourceTracker {
public:
// Returns the pointer to the singleton object.
static ResourceTracker* Get();
// The returned pointer will be NULL if there is no resource.
Resource* GetResource(PP_Resource res) const;
// Adds the given resource to the tracker and assigns it a resource ID. The
// assigned resource ID will be returned.
void AddResource(Resource* resource);
void DeleteResource(Resource* resource);
private:
friend struct DefaultSingletonTraits<ResourceTracker>;
ResourceTracker();
~ResourceTracker();
// Hold this lock when accessing this object's members.
mutable Lock lock_;
typedef std::set<Resource*> ResourceSet;
ResourceSet live_resources_;
DISALLOW_COPY_AND_ASSIGN(ResourceTracker);
};
} // namespace pepper
#endif // WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_
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