ppapi/proxy/plugin_resource_tracker.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_
   6 #define PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_
   7
   8 #include <map>
   9 #include <utility>
  10
  11 #include "base/compiler_specific.h"
  12 #include "ppapi/c/pp_completion_callback.h"
  13 #include "ppapi/c/pp_instance.h"
  14 #include "ppapi/c/pp_stdint.h"
  15 #include "ppapi/c/pp_resource.h"
  16 #include "ppapi/c/pp_var.h"
  17 #include "ppapi/proxy/ppapi_proxy_export.h"
  18 #include "ppapi/shared_impl/host_resource.h"
  19 #include "ppapi/shared_impl/resource_tracker.h"
  20
  21 template<typename T> struct DefaultSingletonTraits;
  22
  23 namespace ppapi {
  24
  25 namespace proxy {
  26
  27 class PPAPI_PROXY_EXPORT PluginResourceTracker : public ResourceTracker {
  28  public:
  29   PluginResourceTracker();
  30   virtual ~PluginResourceTracker();
  31
  32   // Given a host resource, maps it to an existing plugin resource ID if it
  33   // exists, or returns 0 on failure.
  34   PP_Resource PluginResourceForHostResource(
  35       const HostResource& resource) const;
  36
  37  protected:
  38   // ResourceTracker overrides.
  39   virtual PP_Resource AddResource(Resource* object) OVERRIDE;
  40   virtual void RemoveResource(Resource* object) OVERRIDE;
  41
  42  private:
  43   // Map of host instance/resource pairs to a plugin resource ID.
  44   typedef std::map<HostResource, PP_Resource> HostResourceMap;
  45   HostResourceMap host_resource_map_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(PluginResourceTracker);
  48 };
  49
  50 }  // namespace proxy
  51 }  // namespace ppapi
  52
  53 #endif  // PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_