15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_resource.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/shared_impl/ppapi_shared_export.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ppapi { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Resource; 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This is a version of scoped_refptr but for PP_Resources. 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class PPAPI_SHARED_EXPORT ScopedPPResource { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct PassRef {}; 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScopedPPResource(); 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Takes one reference to the given resource. 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit ScopedPPResource(PP_Resource resource); 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Assumes responsibility for one ref that the resource already has. 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit ScopedPPResource(const PassRef&, PP_Resource resource); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Helper to get the PP_Resource out of the given object and take a reference 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to it. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit ScopedPPResource(Resource* resource); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Implicit copy constructor allowed. 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScopedPPResource(const ScopedPPResource& other); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ScopedPPResource(); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScopedPPResource& operator=(PP_Resource resource); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScopedPPResource& operator=(const ScopedPPResource& resource); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the PP_Resource without affecting the refcounting. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Resource get() const { return id_; } 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) operator PP_Resource() const { return id_; } 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the PP_Resource, passing the reference to the caller. This class 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // will no longer hold the resource. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Resource Release(); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Helpers to addref or release the id_ if it's non-NULL. The id_ value will 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // be unchanged. 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void CallAddRef(); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void CallRelease(); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Resource id_; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace ppapi 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_ 60